diff options
Diffstat (limited to 'src/fmtlib/fmt')
| -rw-r--r-- | src/fmtlib/fmt/args.h | 234 | ||||
| -rw-r--r-- | src/fmtlib/fmt/chrono.h | 2080 | ||||
| -rw-r--r-- | src/fmtlib/fmt/color.h | 651 | ||||
| -rw-r--r-- | src/fmtlib/fmt/compile.h | 603 | ||||
| -rw-r--r-- | src/fmtlib/fmt/core.h | 3280 | ||||
| -rw-r--r-- | src/fmtlib/fmt/format-inl.h | 1733 | ||||
| -rw-r--r-- | src/fmtlib/fmt/format.h | 4192 | ||||
| -rw-r--r-- | src/fmtlib/fmt/locale.h | 2 | ||||
| -rw-r--r-- | src/fmtlib/fmt/os.h | 478 | ||||
| -rw-r--r-- | src/fmtlib/fmt/ostream.h | 213 | ||||
| -rw-r--r-- | src/fmtlib/fmt/printf.h | 640 | ||||
| -rw-r--r-- | src/fmtlib/fmt/ranges.h | 631 | ||||
| -rw-r--r-- | src/fmtlib/fmt/std.h | 176 | ||||
| -rw-r--r-- | src/fmtlib/fmt/xchar.h | 232 |
14 files changed, 15145 insertions, 0 deletions
diff --git a/src/fmtlib/fmt/args.h b/src/fmtlib/fmt/args.h new file mode 100644 index 0000000..a3966d1 --- /dev/null +++ b/src/fmtlib/fmt/args.h @@ -0,0 +1,234 @@ +// Formatting library for C++ - dynamic format arguments +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_ARGS_H_ +#define FMT_ARGS_H_ + +#include <functional> // std::reference_wrapper +#include <memory> // std::unique_ptr +#include <vector> + +#include "core.h" + +FMT_BEGIN_NAMESPACE + +namespace detail { + +template <typename T> struct is_reference_wrapper : std::false_type {}; +template <typename T> +struct is_reference_wrapper<std::reference_wrapper<T>> : std::true_type {}; + +template <typename T> const T& unwrap(const T& v) { return v; } +template <typename T> const T& unwrap(const std::reference_wrapper<T>& v) { + return static_cast<const T&>(v); +} + +class dynamic_arg_list { + // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for + // templates it doesn't complain about inability to deduce single translation + // unit for placing vtable. So storage_node_base is made a fake template. + template <typename = void> struct node { + virtual ~node() = default; + std::unique_ptr<node<>> next; + }; + + template <typename T> struct typed_node : node<> { + T value; + + template <typename Arg> + FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {} + + template <typename Char> + FMT_CONSTEXPR typed_node(const basic_string_view<Char>& arg) + : value(arg.data(), arg.size()) {} + }; + + std::unique_ptr<node<>> head_; + + public: + template <typename T, typename Arg> const T& push(const Arg& arg) { + auto new_node = std::unique_ptr<typed_node<T>>(new typed_node<T>(arg)); + auto& value = new_node->value; + new_node->next = std::move(head_); + head_ = std::move(new_node); + return value; + } +}; +} // namespace detail + +/** + \rst + A dynamic version of `fmt::format_arg_store`. + It's equipped with a storage to potentially temporary objects which lifetimes + could be shorter than the format arguments object. + + It can be implicitly converted into `~fmt::basic_format_args` for passing + into type-erased formatting functions such as `~fmt::vformat`. + \endrst + */ +template <typename Context> +class dynamic_format_arg_store +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + // Workaround a GCC template argument substitution bug. + : public basic_format_args<Context> +#endif +{ + private: + using char_type = typename Context::char_type; + + template <typename T> struct need_copy { + static constexpr detail::type mapped_type = + detail::mapped_type_constant<T, Context>::value; + + enum { + value = !(detail::is_reference_wrapper<T>::value || + std::is_same<T, basic_string_view<char_type>>::value || + std::is_same<T, detail::std_string_view<char_type>>::value || + (mapped_type != detail::type::cstring_type && + mapped_type != detail::type::string_type && + mapped_type != detail::type::custom_type)) + }; + }; + + template <typename T> + using stored_type = conditional_t< + std::is_convertible<T, std::basic_string<char_type>>::value && + !detail::is_reference_wrapper<T>::value, + std::basic_string<char_type>, T>; + + // Storage of basic_format_arg must be contiguous. + std::vector<basic_format_arg<Context>> data_; + std::vector<detail::named_arg_info<char_type>> named_info_; + + // Storage of arguments not fitting into basic_format_arg must grow + // without relocation because items in data_ refer to it. + detail::dynamic_arg_list dynamic_args_; + + friend class basic_format_args<Context>; + + unsigned long long get_types() const { + return detail::is_unpacked_bit | data_.size() | + (named_info_.empty() + ? 0ULL + : static_cast<unsigned long long>(detail::has_named_args_bit)); + } + + const basic_format_arg<Context>* data() const { + return named_info_.empty() ? data_.data() : data_.data() + 1; + } + + template <typename T> void emplace_arg(const T& arg) { + data_.emplace_back(detail::make_arg<Context>(arg)); + } + + template <typename T> + void emplace_arg(const detail::named_arg<char_type, T>& arg) { + if (named_info_.empty()) { + constexpr const detail::named_arg_info<char_type>* zero_ptr{nullptr}; + data_.insert(data_.begin(), {zero_ptr, 0}); + } + data_.emplace_back(detail::make_arg<Context>(detail::unwrap(arg.value))); + auto pop_one = [](std::vector<basic_format_arg<Context>>* data) { + data->pop_back(); + }; + std::unique_ptr<std::vector<basic_format_arg<Context>>, decltype(pop_one)> + guard{&data_, pop_one}; + named_info_.push_back({arg.name, static_cast<int>(data_.size() - 2u)}); + data_[0].value_.named_args = {named_info_.data(), named_info_.size()}; + guard.release(); + } + + public: + constexpr dynamic_format_arg_store() = default; + + /** + \rst + Adds an argument into the dynamic store for later passing to a formatting + function. + + Note that custom types and string types (but not string views) are copied + into the store dynamically allocating memory if necessary. + + **Example**:: + + fmt::dynamic_format_arg_store<fmt::format_context> store; + store.push_back(42); + store.push_back("abc"); + store.push_back(1.5f); + std::string result = fmt::vformat("{} and {} and {}", store); + \endrst + */ + template <typename T> void push_back(const T& arg) { + if (detail::const_check(need_copy<T>::value)) + emplace_arg(dynamic_args_.push<stored_type<T>>(arg)); + else + emplace_arg(detail::unwrap(arg)); + } + + /** + \rst + Adds a reference to the argument into the dynamic store for later passing to + a formatting function. + + **Example**:: + + fmt::dynamic_format_arg_store<fmt::format_context> store; + char band[] = "Rolling Stones"; + store.push_back(std::cref(band)); + band[9] = 'c'; // Changing str affects the output. + std::string result = fmt::vformat("{}", store); + // result == "Rolling Scones" + \endrst + */ + template <typename T> void push_back(std::reference_wrapper<T> arg) { + static_assert( + need_copy<T>::value, + "objects of built-in types and string views are always copied"); + emplace_arg(arg.get()); + } + + /** + Adds named argument into the dynamic store for later passing to a formatting + function. ``std::reference_wrapper`` is supported to avoid copying of the + argument. The name is always copied into the store. + */ + template <typename T> + void push_back(const detail::named_arg<char_type, T>& arg) { + const char_type* arg_name = + dynamic_args_.push<std::basic_string<char_type>>(arg.name).c_str(); + if (detail::const_check(need_copy<T>::value)) { + emplace_arg( + fmt::arg(arg_name, dynamic_args_.push<stored_type<T>>(arg.value))); + } else { + emplace_arg(fmt::arg(arg_name, arg.value)); + } + } + + /** Erase all elements from the store */ + void clear() { + data_.clear(); + named_info_.clear(); + dynamic_args_ = detail::dynamic_arg_list(); + } + + /** + \rst + Reserves space to store at least *new_cap* arguments including + *new_cap_named* named arguments. + \endrst + */ + void reserve(size_t new_cap, size_t new_cap_named) { + FMT_ASSERT(new_cap >= new_cap_named, + "Set of arguments includes set of named arguments"); + data_.reserve(new_cap); + named_info_.reserve(new_cap_named); + } +}; + +FMT_END_NAMESPACE + +#endif // FMT_ARGS_H_ diff --git a/src/fmtlib/fmt/chrono.h b/src/fmtlib/fmt/chrono.h new file mode 100644 index 0000000..c3c52bf --- /dev/null +++ b/src/fmtlib/fmt/chrono.h @@ -0,0 +1,2080 @@ +// Formatting library for C++ - chrono support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_CHRONO_H_ +#define FMT_CHRONO_H_ + +#include <algorithm> +#include <chrono> +#include <cmath> // std::isfinite +#include <cstring> // std::memcpy +#include <ctime> +#include <iterator> +#include <locale> +#include <ostream> +#include <type_traits> + +#include "format.h" + +FMT_BEGIN_NAMESPACE + +// Enable tzset. +#ifndef FMT_USE_TZSET +// UWP doesn't provide _tzset. +# if FMT_HAS_INCLUDE("winapifamily.h") +# include <winapifamily.h> +# endif +# if defined(_WIN32) && (!defined(WINAPI_FAMILY) || \ + (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) +# define FMT_USE_TZSET 1 +# else +# define FMT_USE_TZSET 0 +# endif +#endif + +// Enable safe chrono durations, unless explicitly disabled. +#ifndef FMT_SAFE_DURATION_CAST +# define FMT_SAFE_DURATION_CAST 1 +#endif +#if FMT_SAFE_DURATION_CAST + +// For conversion between std::chrono::durations without undefined +// behaviour or erroneous results. +// This is a stripped down version of duration_cast, for inclusion in fmt. +// See https://github.com/pauldreik/safe_duration_cast +// +// Copyright Paul Dreik 2019 +namespace safe_duration_cast { + +template <typename To, typename From, + FMT_ENABLE_IF(!std::is_same<From, To>::value && + std::numeric_limits<From>::is_signed == + std::numeric_limits<To>::is_signed)> +FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { + ec = 0; + using F = std::numeric_limits<From>; + using T = std::numeric_limits<To>; + static_assert(F::is_integer, "From must be integral"); + static_assert(T::is_integer, "To must be integral"); + + // A and B are both signed, or both unsigned. + if (detail::const_check(F::digits <= T::digits)) { + // From fits in To without any problem. + } else { + // From does not always fit in To, resort to a dynamic check. + if (from < (T::min)() || from > (T::max)()) { + // outside range. + ec = 1; + return {}; + } + } + return static_cast<To>(from); +} + +/** + * converts From to To, without loss. If the dynamic value of from + * can't be converted to To without loss, ec is set. + */ +template <typename To, typename From, + FMT_ENABLE_IF(!std::is_same<From, To>::value && + std::numeric_limits<From>::is_signed != + std::numeric_limits<To>::is_signed)> +FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { + ec = 0; + using F = std::numeric_limits<From>; + using T = std::numeric_limits<To>; + static_assert(F::is_integer, "From must be integral"); + static_assert(T::is_integer, "To must be integral"); + + if (detail::const_check(F::is_signed && !T::is_signed)) { + // From may be negative, not allowed! + if (fmt::detail::is_negative(from)) { + ec = 1; + return {}; + } + // From is positive. Can it always fit in To? + if (detail::const_check(F::digits > T::digits) && + from > static_cast<From>(detail::max_value<To>())) { + ec = 1; + return {}; + } + } + + if (detail::const_check(!F::is_signed && T::is_signed && + F::digits >= T::digits) && + from > static_cast<From>(detail::max_value<To>())) { + ec = 1; + return {}; + } + return static_cast<To>(from); // Lossless conversion. +} + +template <typename To, typename From, + FMT_ENABLE_IF(std::is_same<From, To>::value)> +FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { + ec = 0; + return from; +} // function + +// clang-format off +/** + * converts From to To if possible, otherwise ec is set. + * + * input | output + * ---------------------------------|--------------- + * NaN | NaN + * Inf | Inf + * normal, fits in output | converted (possibly lossy) + * normal, does not fit in output | ec is set + * subnormal | best effort + * -Inf | -Inf + */ +// clang-format on +template <typename To, typename From, + FMT_ENABLE_IF(!std::is_same<From, To>::value)> +FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) { + ec = 0; + using T = std::numeric_limits<To>; + static_assert(std::is_floating_point<From>::value, "From must be floating"); + static_assert(std::is_floating_point<To>::value, "To must be floating"); + + // catch the only happy case + if (std::isfinite(from)) { + if (from >= T::lowest() && from <= (T::max)()) { + return static_cast<To>(from); + } + // not within range. + ec = 1; + return {}; + } + + // nan and inf will be preserved + return static_cast<To>(from); +} // function + +template <typename To, typename From, + FMT_ENABLE_IF(std::is_same<From, To>::value)> +FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) { + ec = 0; + static_assert(std::is_floating_point<From>::value, "From must be floating"); + return from; +} + +/** + * safe duration cast between integral durations + */ +template <typename To, typename FromRep, typename FromPeriod, + FMT_ENABLE_IF(std::is_integral<FromRep>::value), + FMT_ENABLE_IF(std::is_integral<typename To::rep>::value)> +To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from, + int& ec) { + using From = std::chrono::duration<FromRep, FromPeriod>; + ec = 0; + // the basic idea is that we need to convert from count() in the from type + // to count() in the To type, by multiplying it with this: + struct Factor + : std::ratio_divide<typename From::period, typename To::period> {}; + + static_assert(Factor::num > 0, "num must be positive"); + static_assert(Factor::den > 0, "den must be positive"); + + // the conversion is like this: multiply from.count() with Factor::num + // /Factor::den and convert it to To::rep, all this without + // overflow/underflow. let's start by finding a suitable type that can hold + // both To, From and Factor::num + using IntermediateRep = + typename std::common_type<typename From::rep, typename To::rep, + decltype(Factor::num)>::type; + + // safe conversion to IntermediateRep + IntermediateRep count = + lossless_integral_conversion<IntermediateRep>(from.count(), ec); + if (ec) return {}; + // multiply with Factor::num without overflow or underflow + if (detail::const_check(Factor::num != 1)) { + const auto max1 = detail::max_value<IntermediateRep>() / Factor::num; + if (count > max1) { + ec = 1; + return {}; + } + const auto min1 = + (std::numeric_limits<IntermediateRep>::min)() / Factor::num; + if (count < min1) { + ec = 1; + return {}; + } + count *= Factor::num; + } + + if (detail::const_check(Factor::den != 1)) count /= Factor::den; + auto tocount = lossless_integral_conversion<typename To::rep>(count, ec); + return ec ? To() : To(tocount); +} + +/** + * safe duration_cast between floating point durations + */ +template <typename To, typename FromRep, typename FromPeriod, + FMT_ENABLE_IF(std::is_floating_point<FromRep>::value), + FMT_ENABLE_IF(std::is_floating_point<typename To::rep>::value)> +To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from, + int& ec) { + using From = std::chrono::duration<FromRep, FromPeriod>; + ec = 0; + if (std::isnan(from.count())) { + // nan in, gives nan out. easy. + return To{std::numeric_limits<typename To::rep>::quiet_NaN()}; + } + // maybe we should also check if from is denormal, and decide what to do about + // it. + + // +-inf should be preserved. + if (std::isinf(from.count())) { + return To{from.count()}; + } + + // the basic idea is that we need to convert from count() in the from type + // to count() in the To type, by multiplying it with this: + struct Factor + : std::ratio_divide<typename From::period, typename To::period> {}; + + static_assert(Factor::num > 0, "num must be positive"); + static_assert(Factor::den > 0, "den must be positive"); + + // the conversion is like this: multiply from.count() with Factor::num + // /Factor::den and convert it to To::rep, all this without + // overflow/underflow. let's start by finding a suitable type that can hold + // both To, From and Factor::num + using IntermediateRep = + typename std::common_type<typename From::rep, typename To::rep, + decltype(Factor::num)>::type; + + // force conversion of From::rep -> IntermediateRep to be safe, + // even if it will never happen be narrowing in this context. + IntermediateRep count = + safe_float_conversion<IntermediateRep>(from.count(), ec); + if (ec) { + return {}; + } + + // multiply with Factor::num without overflow or underflow + if (detail::const_check(Factor::num != 1)) { + constexpr auto max1 = detail::max_value<IntermediateRep>() / + static_cast<IntermediateRep>(Factor::num); + if (count > max1) { + ec = 1; + return {}; + } + constexpr auto min1 = std::numeric_limits<IntermediateRep>::lowest() / + static_cast<IntermediateRep>(Factor::num); + if (count < min1) { + ec = 1; + return {}; + } + count *= static_cast<IntermediateRep>(Factor::num); + } + + // this can't go wrong, right? den>0 is checked earlier. + if (detail::const_check(Factor::den != 1)) { + using common_t = typename std::common_type<IntermediateRep, intmax_t>::type; + count /= static_cast<common_t>(Factor::den); + } + + // convert to the to type, safely + using ToRep = typename To::rep; + + const ToRep tocount = safe_float_conversion<ToRep>(count, ec); + if (ec) { + return {}; + } + return To{tocount}; +} +} // namespace safe_duration_cast +#endif + +// Prevents expansion of a preceding token as a function-style macro. +// Usage: f FMT_NOMACRO() +#define FMT_NOMACRO + +namespace detail { +template <typename T = void> struct null {}; +inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); } +inline null<> localtime_s(...) { return null<>(); } +inline null<> gmtime_r(...) { return null<>(); } +inline null<> gmtime_s(...) { return null<>(); } + +inline const std::locale& get_classic_locale() { + static const auto& locale = std::locale::classic(); + return locale; +} + +template <typename CodeUnit> struct codecvt_result { + static constexpr const size_t max_size = 32; + CodeUnit buf[max_size]; + CodeUnit* end; +}; +template <typename CodeUnit> +constexpr const size_t codecvt_result<CodeUnit>::max_size; + +template <typename CodeUnit> +void write_codecvt(codecvt_result<CodeUnit>& out, string_view in_buf, + const std::locale& loc) { +#if FMT_CLANG_VERSION +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wdeprecated" + auto& f = std::use_facet<std::codecvt<CodeUnit, char, std::mbstate_t>>(loc); +# pragma clang diagnostic pop +#else + auto& f = std::use_facet<std::codecvt<CodeUnit, char, std::mbstate_t>>(loc); +#endif + auto mb = std::mbstate_t(); + const char* from_next = nullptr; + auto result = f.in(mb, in_buf.begin(), in_buf.end(), from_next, + std::begin(out.buf), std::end(out.buf), out.end); + if (result != std::codecvt_base::ok) + FMT_THROW(format_error("failed to format time")); +} + +template <typename OutputIt> +auto write_encoded_tm_str(OutputIt out, string_view in, const std::locale& loc) + -> OutputIt { + if (detail::is_utf8() && loc != get_classic_locale()) { + // char16_t and char32_t codecvts are broken in MSVC (linkage errors) and + // gcc-4. +#if FMT_MSC_VERSION != 0 || \ + (defined(__GLIBCXX__) && !defined(_GLIBCXX_USE_DUAL_ABI)) + // The _GLIBCXX_USE_DUAL_ABI macro is always defined in libstdc++ from gcc-5 + // and newer. + using code_unit = wchar_t; +#else + using code_unit = char32_t; +#endif + + using unit_t = codecvt_result<code_unit>; + unit_t unit; + write_codecvt(unit, in, loc); + // In UTF-8 is used one to four one-byte code units. + auto&& buf = basic_memory_buffer<char, unit_t::max_size * 4>(); + for (code_unit* p = unit.buf; p != unit.end; ++p) { + uint32_t c = static_cast<uint32_t>(*p); + if (sizeof(code_unit) == 2 && c >= 0xd800 && c <= 0xdfff) { + // surrogate pair + ++p; + if (p == unit.end || (c & 0xfc00) != 0xd800 || + (*p & 0xfc00) != 0xdc00) { + FMT_THROW(format_error("failed to format time")); + } + c = (c << 10) + static_cast<uint32_t>(*p) - 0x35fdc00; + } + if (c < 0x80) { + buf.push_back(static_cast<char>(c)); + } else if (c < 0x800) { + buf.push_back(static_cast<char>(0xc0 | (c >> 6))); + buf.push_back(static_cast<char>(0x80 | (c & 0x3f))); + } else if ((c >= 0x800 && c <= 0xd7ff) || (c >= 0xe000 && c <= 0xffff)) { + buf.push_back(static_cast<char>(0xe0 | (c >> 12))); + buf.push_back(static_cast<char>(0x80 | ((c & 0xfff) >> 6))); + buf.push_back(static_cast<char>(0x80 | (c & 0x3f))); + } else if (c >= 0x10000 && c <= 0x10ffff) { + buf.push_back(static_cast<char>(0xf0 | (c >> 18))); + buf.push_back(static_cast<char>(0x80 | ((c & 0x3ffff) >> 12))); + buf.push_back(static_cast<char>(0x80 | ((c & 0xfff) >> 6))); + buf.push_back(static_cast<char>(0x80 | (c & 0x3f))); + } else { + FMT_THROW(format_error("failed to format time")); + } + } + return copy_str<char>(buf.data(), buf.data() + buf.size(), out); + } + return copy_str<char>(in.data(), in.data() + in.size(), out); +} + +template <typename Char, typename OutputIt, + FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +auto write_tm_str(OutputIt out, string_view sv, const std::locale& loc) + -> OutputIt { + codecvt_result<Char> unit; + write_codecvt(unit, sv, loc); + return copy_str<Char>(unit.buf, unit.end, out); +} + +template <typename Char, typename OutputIt, + FMT_ENABLE_IF(std::is_same<Char, char>::value)> +auto write_tm_str(OutputIt out, string_view sv, const std::locale& loc) + -> OutputIt { + return write_encoded_tm_str(out, sv, loc); +} + +template <typename Char> +inline void do_write(buffer<Char>& buf, const std::tm& time, + const std::locale& loc, char format, char modifier) { + auto&& format_buf = formatbuf<std::basic_streambuf<Char>>(buf); + auto&& os = std::basic_ostream<Char>(&format_buf); + os.imbue(loc); + using iterator = std::ostreambuf_iterator<Char>; + const auto& facet = std::use_facet<std::time_put<Char, iterator>>(loc); + auto end = facet.put(os, os, Char(' '), &time, format, modifier); + if (end.failed()) FMT_THROW(format_error("failed to format time")); +} + +template <typename Char, typename OutputIt, + FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +auto write(OutputIt out, const std::tm& time, const std::locale& loc, + char format, char modifier = 0) -> OutputIt { + auto&& buf = get_buffer<Char>(out); + do_write<Char>(buf, time, loc, format, modifier); + return buf.out(); +} + +template <typename Char, typename OutputIt, + FMT_ENABLE_IF(std::is_same<Char, char>::value)> +auto write(OutputIt out, const std::tm& time, const std::locale& loc, + char format, char modifier = 0) -> OutputIt { + auto&& buf = basic_memory_buffer<Char>(); + do_write<char>(buf, time, loc, format, modifier); + return write_encoded_tm_str(out, string_view(buf.data(), buf.size()), loc); +} + +} // namespace detail + +FMT_MODULE_EXPORT_BEGIN + +/** + Converts given time since epoch as ``std::time_t`` value into calendar time, + expressed in local time. Unlike ``std::localtime``, this function is + thread-safe on most platforms. + */ +inline std::tm localtime(std::time_t time) { + struct dispatcher { + std::time_t time_; + std::tm tm_; + + dispatcher(std::time_t t) : time_(t) {} + + bool run() { + using namespace fmt::detail; + return handle(localtime_r(&time_, &tm_)); + } + + bool handle(std::tm* tm) { return tm != nullptr; } + + bool handle(detail::null<>) { + using namespace fmt::detail; + return fallback(localtime_s(&tm_, &time_)); + } + + bool fallback(int res) { return res == 0; } + +#if !FMT_MSC_VERSION + bool fallback(detail::null<>) { + using namespace fmt::detail; + std::tm* tm = std::localtime(&time_); + if (tm) tm_ = *tm; + return tm != nullptr; + } +#endif + }; + dispatcher lt(time); + // Too big time values may be unsupported. + if (!lt.run()) FMT_THROW(format_error("time_t value out of range")); + return lt.tm_; +} + +inline std::tm localtime( + std::chrono::time_point<std::chrono::system_clock> time_point) { + return localtime(std::chrono::system_clock::to_time_t(time_point)); +} + +/** + Converts given time since epoch as ``std::time_t`` value into calendar time, + expressed in Coordinated Universal Time (UTC). Unlike ``std::gmtime``, this + function is thread-safe on most platforms. + */ +inline std::tm gmtime(std::time_t time) { + struct dispatcher { + std::time_t time_; + std::tm tm_; + + dispatcher(std::time_t t) : time_(t) {} + + bool run() { + using namespace fmt::detail; + return handle(gmtime_r(&time_, &tm_)); + } + + bool handle(std::tm* tm) { return tm != nullptr; } + + bool handle(detail::null<>) { + using namespace fmt::detail; + return fallback(gmtime_s(&tm_, &time_)); + } + + bool fallback(int res) { return res == 0; } + +#if !FMT_MSC_VERSION + bool fallback(detail::null<>) { + std::tm* tm = std::gmtime(&time_); + if (tm) tm_ = *tm; + return tm != nullptr; + } +#endif + }; + dispatcher gt(time); + // Too big time values may be unsupported. + if (!gt.run()) FMT_THROW(format_error("time_t value out of range")); + return gt.tm_; +} + +inline std::tm gmtime( + std::chrono::time_point<std::chrono::system_clock> time_point) { + return gmtime(std::chrono::system_clock::to_time_t(time_point)); +} + +FMT_BEGIN_DETAIL_NAMESPACE + +// Writes two-digit numbers a, b and c separated by sep to buf. +// The method by Pavel Novikov based on +// https://johnnylee-sde.github.io/Fast-unsigned-integer-to-time-string/. +inline void write_digit2_separated(char* buf, unsigned a, unsigned b, + unsigned c, char sep) { + unsigned long long digits = + a | (b << 24) | (static_cast<unsigned long long>(c) << 48); + // Convert each value to BCD. + // We have x = a * 10 + b and we want to convert it to BCD y = a * 16 + b. + // The difference is + // y - x = a * 6 + // a can be found from x: + // a = floor(x / 10) + // then + // y = x + a * 6 = x + floor(x / 10) * 6 + // floor(x / 10) is (x * 205) >> 11 (needs 16 bits). + digits += (((digits * 205) >> 11) & 0x000f00000f00000f) * 6; + // Put low nibbles to high bytes and high nibbles to low bytes. + digits = ((digits & 0x00f00000f00000f0) >> 4) | + ((digits & 0x000f00000f00000f) << 8); + auto usep = static_cast<unsigned long long>(sep); + // Add ASCII '0' to each digit byte and insert separators. + digits |= 0x3030003030003030 | (usep << 16) | (usep << 40); + + constexpr const size_t len = 8; + if (const_check(is_big_endian())) { + char tmp[len]; + std::memcpy(tmp, &digits, len); + std::reverse_copy(tmp, tmp + len, buf); + } else { + std::memcpy(buf, &digits, len); + } +} + +template <typename Period> FMT_CONSTEXPR inline const char* get_units() { + if (std::is_same<Period, std::atto>::value) return "as"; + if (std::is_same<Period, std::femto>::value) return "fs"; + if (std::is_same<Period, std::pico>::value) return "ps"; + if (std::is_same<Period, std::nano>::value) return "ns"; + if (std::is_same<Period, std::micro>::value) return "µs"; + if (std::is_same<Period, std::milli>::value) return "ms"; + if (std::is_same<Period, std::centi>::value) return "cs"; + if (std::is_same<Period, std::deci>::value) return "ds"; + if (std::is_same<Period, std::ratio<1>>::value) return "s"; + if (std::is_same<Period, std::deca>::value) return "das"; + if (std::is_same<Period, std::hecto>::value) return "hs"; + if (std::is_same<Period, std::kilo>::value) return "ks"; + if (std::is_same<Period, std::mega>::value) return "Ms"; + if (std::is_same<Period, std::giga>::value) return "Gs"; + if (std::is_same<Period, std::tera>::value) return "Ts"; + if (std::is_same<Period, std::peta>::value) return "Ps"; + if (std::is_same<Period, std::exa>::value) return "Es"; + if (std::is_same<Period, std::ratio<60>>::value) return "m"; + if (std::is_same<Period, std::ratio<3600>>::value) return "h"; + return nullptr; +} + +enum class numeric_system { + standard, + // Alternative numeric system, e.g. 十二 instead of 12 in ja_JP locale. + alternative +}; + +// Parses a put_time-like format string and invokes handler actions. +template <typename Char, typename Handler> +FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, + const Char* end, + Handler&& handler) { + auto ptr = begin; + while (ptr != end) { + auto c = *ptr; + if (c == '}') break; + if (c != '%') { + ++ptr; + continue; + } + if (begin != ptr) handler.on_text(begin, ptr); + ++ptr; // consume '%' + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case '%': + handler.on_text(ptr - 1, ptr); + break; + case 'n': { + const Char newline[] = {'\n'}; + handler.on_text(newline, newline + 1); + break; + } + case 't': { + const Char tab[] = {'\t'}; + handler.on_text(tab, tab + 1); + break; + } + // Year: + case 'Y': + handler.on_year(numeric_system::standard); + break; + case 'y': + handler.on_short_year(numeric_system::standard); + break; + case 'C': + handler.on_century(numeric_system::standard); + break; + case 'G': + handler.on_iso_week_based_year(); + break; + case 'g': + handler.on_iso_week_based_short_year(); + break; + // Day of the week: + case 'a': + handler.on_abbr_weekday(); + break; + case 'A': + handler.on_full_weekday(); + break; + case 'w': + handler.on_dec0_weekday(numeric_system::standard); + break; + case 'u': + handler.on_dec1_weekday(numeric_system::standard); + break; + // Month: + case 'b': + case 'h': + handler.on_abbr_month(); + break; + case 'B': + handler.on_full_month(); + break; + case 'm': + handler.on_dec_month(numeric_system::standard); + break; + // Day of the year/month: + case 'U': + handler.on_dec0_week_of_year(numeric_system::standard); + break; + case 'W': + handler.on_dec1_week_of_year(numeric_system::standard); + break; + case 'V': + handler.on_iso_week_of_year(numeric_system::standard); + break; + case 'j': + handler.on_day_of_year(); + break; + case 'd': + handler.on_day_of_month(numeric_system::standard); + break; + case 'e': + handler.on_day_of_month_space(numeric_system::standard); + break; + // Hour, minute, second: + case 'H': + handler.on_24_hour(numeric_system::standard); + break; + case 'I': + handler.on_12_hour(numeric_system::standard); + break; + case 'M': + handler.on_minute(numeric_system::standard); + break; + case 'S': + handler.on_second(numeric_system::standard); + break; + // Other: + case 'c': + handler.on_datetime(numeric_system::standard); + break; + case 'x': + handler.on_loc_date(numeric_system::standard); + break; + case 'X': + handler.on_loc_time(numeric_system::standard); + break; + case 'D': + handler.on_us_date(); + break; + case 'F': + handler.on_iso_date(); + break; + case 'r': + handler.on_12_hour_time(); + break; + case 'R': + handler.on_24_hour_time(); + break; + case 'T': + handler.on_iso_time(); + break; + case 'p': + handler.on_am_pm(); + break; + case 'Q': + handler.on_duration_value(); + break; + case 'q': + handler.on_duration_unit(); + break; + case 'z': + handler.on_utc_offset(); + break; + case 'Z': + handler.on_tz_name(); + break; + // Alternative representation: + case 'E': { + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case 'Y': + handler.on_year(numeric_system::alternative); + break; + case 'y': + handler.on_offset_year(); + break; + case 'C': + handler.on_century(numeric_system::alternative); + break; + case 'c': + handler.on_datetime(numeric_system::alternative); + break; + case 'x': + handler.on_loc_date(numeric_system::alternative); + break; + case 'X': + handler.on_loc_time(numeric_system::alternative); + break; + default: + FMT_THROW(format_error("invalid format")); + } + break; + } + case 'O': + if (ptr == end) FMT_THROW(format_error("invalid format")); + c = *ptr++; + switch (c) { + case 'y': + handler.on_short_year(numeric_system::alternative); + break; + case 'm': + handler.on_dec_month(numeric_system::alternative); + break; + case 'U': + handler.on_dec0_week_of_year(numeric_system::alternative); + break; + case 'W': + handler.on_dec1_week_of_year(numeric_system::alternative); + break; + case 'V': + handler.on_iso_week_of_year(numeric_system::alternative); + break; + case 'd': + handler.on_day_of_month(numeric_system::alternative); + break; + case 'e': + handler.on_day_of_month_space(numeric_system::alternative); + break; + case 'w': + handler.on_dec0_weekday(numeric_system::alternative); + break; + case 'u': + handler.on_dec1_weekday(numeric_system::alternative); + break; + case 'H': + handler.on_24_hour(numeric_system::alternative); + break; + case 'I': + handler.on_12_hour(numeric_system::alternative); + break; + case 'M': + handler.on_minute(numeric_system::alternative); + break; + case 'S': + handler.on_second(numeric_system::alternative); + break; + default: + FMT_THROW(format_error("invalid format")); + } + break; + default: + FMT_THROW(format_error("invalid format")); + } + begin = ptr; + } + if (begin != ptr) handler.on_text(begin, ptr); + return ptr; +} + +template <typename Derived> struct null_chrono_spec_handler { + FMT_CONSTEXPR void unsupported() { + static_cast<Derived*>(this)->unsupported(); + } + FMT_CONSTEXPR void on_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_short_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_offset_year() { unsupported(); } + FMT_CONSTEXPR void on_century(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_iso_week_based_year() { unsupported(); } + FMT_CONSTEXPR void on_iso_week_based_short_year() { unsupported(); } + FMT_CONSTEXPR void on_abbr_weekday() { unsupported(); } + FMT_CONSTEXPR void on_full_weekday() { unsupported(); } + FMT_CONSTEXPR void on_dec0_weekday(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_dec1_weekday(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_abbr_month() { unsupported(); } + FMT_CONSTEXPR void on_full_month() { unsupported(); } + FMT_CONSTEXPR void on_dec_month(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_iso_week_of_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_day_of_year() { unsupported(); } + FMT_CONSTEXPR void on_day_of_month(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_day_of_month_space(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_24_hour(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_12_hour(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_minute(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_second(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_datetime(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_loc_date(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_loc_time(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_us_date() { unsupported(); } + FMT_CONSTEXPR void on_iso_date() { unsupported(); } + FMT_CONSTEXPR void on_12_hour_time() { unsupported(); } + FMT_CONSTEXPR void on_24_hour_time() { unsupported(); } + FMT_CONSTEXPR void on_iso_time() { unsupported(); } + FMT_CONSTEXPR void on_am_pm() { unsupported(); } + FMT_CONSTEXPR void on_duration_value() { unsupported(); } + FMT_CONSTEXPR void on_duration_unit() { unsupported(); } + FMT_CONSTEXPR void on_utc_offset() { unsupported(); } + FMT_CONSTEXPR void on_tz_name() { unsupported(); } +}; + +struct tm_format_checker : null_chrono_spec_handler<tm_format_checker> { + FMT_NORETURN void unsupported() { FMT_THROW(format_error("no format")); } + + template <typename Char> + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + FMT_CONSTEXPR void on_year(numeric_system) {} + FMT_CONSTEXPR void on_short_year(numeric_system) {} + FMT_CONSTEXPR void on_offset_year() {} + FMT_CONSTEXPR void on_century(numeric_system) {} + FMT_CONSTEXPR void on_iso_week_based_year() {} + FMT_CONSTEXPR void on_iso_week_based_short_year() {} + FMT_CONSTEXPR void on_abbr_weekday() {} + FMT_CONSTEXPR void on_full_weekday() {} + FMT_CONSTEXPR void on_dec0_weekday(numeric_system) {} + FMT_CONSTEXPR void on_dec1_weekday(numeric_system) {} + FMT_CONSTEXPR void on_abbr_month() {} + FMT_CONSTEXPR void on_full_month() {} + FMT_CONSTEXPR void on_dec_month(numeric_system) {} + FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system) {} + FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system) {} + FMT_CONSTEXPR void on_iso_week_of_year(numeric_system) {} + FMT_CONSTEXPR void on_day_of_year() {} + FMT_CONSTEXPR void on_day_of_month(numeric_system) {} + FMT_CONSTEXPR void on_day_of_month_space(numeric_system) {} + FMT_CONSTEXPR void on_24_hour(numeric_system) {} + FMT_CONSTEXPR void on_12_hour(numeric_system) {} + FMT_CONSTEXPR void on_minute(numeric_system) {} + FMT_CONSTEXPR void on_second(numeric_system) {} + FMT_CONSTEXPR void on_datetime(numeric_system) {} + FMT_CONSTEXPR void on_loc_date(numeric_system) {} + FMT_CONSTEXPR void on_loc_time(numeric_system) {} + FMT_CONSTEXPR void on_us_date() {} + FMT_CONSTEXPR void on_iso_date() {} + FMT_CONSTEXPR void on_12_hour_time() {} + FMT_CONSTEXPR void on_24_hour_time() {} + FMT_CONSTEXPR void on_iso_time() {} + FMT_CONSTEXPR void on_am_pm() {} + FMT_CONSTEXPR void on_utc_offset() {} + FMT_CONSTEXPR void on_tz_name() {} +}; + +inline const char* tm_wday_full_name(int wday) { + static constexpr const char* full_name_list[] = { + "Sunday", "Monday", "Tuesday", "Wednesday", + "Thursday", "Friday", "Saturday"}; + return wday >= 0 && wday <= 6 ? full_name_list[wday] : "?"; +} +inline const char* tm_wday_short_name(int wday) { + static constexpr const char* short_name_list[] = {"Sun", "Mon", "Tue", "Wed", + "Thu", "Fri", "Sat"}; + return wday >= 0 && wday <= 6 ? short_name_list[wday] : "???"; +} + +inline const char* tm_mon_full_name(int mon) { + static constexpr const char* full_name_list[] = { + "January", "February", "March", "April", "May", "June", + "July", "August", "September", "October", "November", "December"}; + return mon >= 0 && mon <= 11 ? full_name_list[mon] : "?"; +} +inline const char* tm_mon_short_name(int mon) { + static constexpr const char* short_name_list[] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", + }; + return mon >= 0 && mon <= 11 ? short_name_list[mon] : "???"; +} + +template <typename T, typename = void> +struct has_member_data_tm_gmtoff : std::false_type {}; +template <typename T> +struct has_member_data_tm_gmtoff<T, void_t<decltype(T::tm_gmtoff)>> + : std::true_type {}; + +template <typename T, typename = void> +struct has_member_data_tm_zone : std::false_type {}; +template <typename T> +struct has_member_data_tm_zone<T, void_t<decltype(T::tm_zone)>> + : std::true_type {}; + +#if FMT_USE_TZSET +inline void tzset_once() { + static bool init = []() -> bool { + _tzset(); + return true; + }(); + ignore_unused(init); +} +#endif + +template <typename OutputIt, typename Char> class tm_writer { + private: + static constexpr int days_per_week = 7; + + const std::locale& loc_; + const bool is_classic_; + OutputIt out_; + const std::tm& tm_; + + auto tm_sec() const noexcept -> int { + FMT_ASSERT(tm_.tm_sec >= 0 && tm_.tm_sec <= 61, ""); + return tm_.tm_sec; + } + auto tm_min() const noexcept -> int { + FMT_ASSERT(tm_.tm_min >= 0 && tm_.tm_min <= 59, ""); + return tm_.tm_min; + } + auto tm_hour() const noexcept -> int { + FMT_ASSERT(tm_.tm_hour >= 0 && tm_.tm_hour <= 23, ""); + return tm_.tm_hour; + } + auto tm_mday() const noexcept -> int { + FMT_ASSERT(tm_.tm_mday >= 1 && tm_.tm_mday <= 31, ""); + return tm_.tm_mday; + } + auto tm_mon() const noexcept -> int { + FMT_ASSERT(tm_.tm_mon >= 0 && tm_.tm_mon <= 11, ""); + return tm_.tm_mon; + } + auto tm_year() const noexcept -> long long { return 1900ll + tm_.tm_year; } + auto tm_wday() const noexcept -> int { + FMT_ASSERT(tm_.tm_wday >= 0 && tm_.tm_wday <= 6, ""); + return tm_.tm_wday; + } + auto tm_yday() const noexcept -> int { + FMT_ASSERT(tm_.tm_yday >= 0 && tm_.tm_yday <= 365, ""); + return tm_.tm_yday; + } + + auto tm_hour12() const noexcept -> int { + const auto h = tm_hour(); + const auto z = h < 12 ? h : h - 12; + return z == 0 ? 12 : z; + } + + // POSIX and the C Standard are unclear or inconsistent about what %C and %y + // do if the year is negative or exceeds 9999. Use the convention that %C + // concatenated with %y yields the same output as %Y, and that %Y contains at + // least 4 characters, with more only if necessary. + auto split_year_lower(long long year) const noexcept -> int { + auto l = year % 100; + if (l < 0) l = -l; // l in [0, 99] + return static_cast<int>(l); + } + + // Algorithm: + // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_the_week_number_from_a_month_and_day_of_the_month_or_ordinal_date + auto iso_year_weeks(long long curr_year) const noexcept -> int { + const auto prev_year = curr_year - 1; + const auto curr_p = + (curr_year + curr_year / 4 - curr_year / 100 + curr_year / 400) % + days_per_week; + const auto prev_p = + (prev_year + prev_year / 4 - prev_year / 100 + prev_year / 400) % + days_per_week; + return 52 + ((curr_p == 4 || prev_p == 3) ? 1 : 0); + } + auto iso_week_num(int tm_yday, int tm_wday) const noexcept -> int { + return (tm_yday + 11 - (tm_wday == 0 ? days_per_week : tm_wday)) / + days_per_week; + } + auto tm_iso_week_year() const noexcept -> long long { + const auto year = tm_year(); + const auto w = iso_week_num(tm_yday(), tm_wday()); + if (w < 1) return year - 1; + if (w > iso_year_weeks(year)) return year + 1; + return year; + } + auto tm_iso_week_of_year() const noexcept -> int { + const auto year = tm_year(); + const auto w = iso_week_num(tm_yday(), tm_wday()); + if (w < 1) return iso_year_weeks(year - 1); + if (w > iso_year_weeks(year)) return 1; + return w; + } + + void write1(int value) { + *out_++ = static_cast<char>('0' + to_unsigned(value) % 10); + } + void write2(int value) { + const char* d = digits2(to_unsigned(value) % 100); + *out_++ = *d++; + *out_++ = *d; + } + + void write_year_extended(long long year) { + // At least 4 characters. + int width = 4; + if (year < 0) { + *out_++ = '-'; + year = 0 - year; + --width; + } + uint32_or_64_or_128_t<long long> n = to_unsigned(year); + const int num_digits = count_digits(n); + if (width > num_digits) out_ = std::fill_n(out_, width - num_digits, '0'); + out_ = format_decimal<Char>(out_, n, num_digits).end; + } + void write_year(long long year) { + if (year >= 0 && year < 10000) { + write2(static_cast<int>(year / 100)); + write2(static_cast<int>(year % 100)); + } else { + write_year_extended(year); + } + } + + void write_utc_offset(long offset) { + if (offset < 0) { + *out_++ = '-'; + offset = -offset; + } else { + *out_++ = '+'; + } + offset /= 60; + write2(static_cast<int>(offset / 60)); + write2(static_cast<int>(offset % 60)); + } + template <typename T, FMT_ENABLE_IF(has_member_data_tm_gmtoff<T>::value)> + void format_utc_offset_impl(const T& tm) { + write_utc_offset(tm.tm_gmtoff); + } + template <typename T, FMT_ENABLE_IF(!has_member_data_tm_gmtoff<T>::value)> + void format_utc_offset_impl(const T& tm) { +#if defined(_WIN32) && defined(_UCRT) +# if FMT_USE_TZSET + tzset_once(); +# endif + long offset = 0; + _get_timezone(&offset); + if (tm.tm_isdst) { + long dstbias = 0; + _get_dstbias(&dstbias); + offset += dstbias; + } + write_utc_offset(-offset); +#else + ignore_unused(tm); + format_localized('z'); +#endif + } + + template <typename T, FMT_ENABLE_IF(has_member_data_tm_zone<T>::value)> + void format_tz_name_impl(const T& tm) { + if (is_classic_) + out_ = write_tm_str<Char>(out_, tm.tm_zone, loc_); + else + format_localized('Z'); + } + template <typename T, FMT_ENABLE_IF(!has_member_data_tm_zone<T>::value)> + void format_tz_name_impl(const T&) { + format_localized('Z'); + } + + void format_localized(char format, char modifier = 0) { + out_ = write<Char>(out_, tm_, loc_, format, modifier); + } + + public: + tm_writer(const std::locale& loc, OutputIt out, const std::tm& tm) + : loc_(loc), + is_classic_(loc_ == get_classic_locale()), + out_(out), + tm_(tm) {} + + OutputIt out() const { return out_; } + + FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) { + out_ = copy_str<Char>(begin, end, out_); + } + + void on_abbr_weekday() { + if (is_classic_) + out_ = write(out_, tm_wday_short_name(tm_wday())); + else + format_localized('a'); + } + void on_full_weekday() { + if (is_classic_) + out_ = write(out_, tm_wday_full_name(tm_wday())); + else + format_localized('A'); + } + void on_dec0_weekday(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write1(tm_wday()); + format_localized('w', 'O'); + } + void on_dec1_weekday(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto wday = tm_wday(); + write1(wday == 0 ? days_per_week : wday); + } else { + format_localized('u', 'O'); + } + } + + void on_abbr_month() { + if (is_classic_) + out_ = write(out_, tm_mon_short_name(tm_mon())); + else + format_localized('b'); + } + void on_full_month() { + if (is_classic_) + out_ = write(out_, tm_mon_full_name(tm_mon())); + else + format_localized('B'); + } + + void on_datetime(numeric_system ns) { + if (is_classic_) { + on_abbr_weekday(); + *out_++ = ' '; + on_abbr_month(); + *out_++ = ' '; + on_day_of_month_space(numeric_system::standard); + *out_++ = ' '; + on_iso_time(); + *out_++ = ' '; + on_year(numeric_system::standard); + } else { + format_localized('c', ns == numeric_system::standard ? '\0' : 'E'); + } + } + void on_loc_date(numeric_system ns) { + if (is_classic_) + on_us_date(); + else + format_localized('x', ns == numeric_system::standard ? '\0' : 'E'); + } + void on_loc_time(numeric_system ns) { + if (is_classic_) + on_iso_time(); + else + format_localized('X', ns == numeric_system::standard ? '\0' : 'E'); + } + void on_us_date() { + char buf[8]; + write_digit2_separated(buf, to_unsigned(tm_mon() + 1), + to_unsigned(tm_mday()), + to_unsigned(split_year_lower(tm_year())), '/'); + out_ = copy_str<Char>(std::begin(buf), std::end(buf), out_); + } + void on_iso_date() { + auto year = tm_year(); + char buf[10]; + size_t offset = 0; + if (year >= 0 && year < 10000) { + copy2(buf, digits2(static_cast<size_t>(year / 100))); + } else { + offset = 4; + write_year_extended(year); + year = 0; + } + write_digit2_separated(buf + 2, static_cast<unsigned>(year % 100), + to_unsigned(tm_mon() + 1), to_unsigned(tm_mday()), + '-'); + out_ = copy_str<Char>(std::begin(buf) + offset, std::end(buf), out_); + } + + void on_utc_offset() { format_utc_offset_impl(tm_); } + void on_tz_name() { format_tz_name_impl(tm_); } + + void on_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write_year(tm_year()); + format_localized('Y', 'E'); + } + void on_short_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(split_year_lower(tm_year())); + format_localized('y', 'O'); + } + void on_offset_year() { + if (is_classic_) return write2(split_year_lower(tm_year())); + format_localized('y', 'E'); + } + + void on_century(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto year = tm_year(); + auto upper = year / 100; + if (year >= -99 && year < 0) { + // Zero upper on negative year. + *out_++ = '-'; + *out_++ = '0'; + } else if (upper >= 0 && upper < 100) { + write2(static_cast<int>(upper)); + } else { + out_ = write<Char>(out_, upper); + } + } else { + format_localized('C', 'E'); + } + } + + void on_dec_month(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_mon() + 1); + format_localized('m', 'O'); + } + + void on_dec0_week_of_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2((tm_yday() + days_per_week - tm_wday()) / days_per_week); + format_localized('U', 'O'); + } + void on_dec1_week_of_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto wday = tm_wday(); + write2((tm_yday() + days_per_week - + (wday == 0 ? (days_per_week - 1) : (wday - 1))) / + days_per_week); + } else { + format_localized('W', 'O'); + } + } + void on_iso_week_of_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_iso_week_of_year()); + format_localized('V', 'O'); + } + + void on_iso_week_based_year() { write_year(tm_iso_week_year()); } + void on_iso_week_based_short_year() { + write2(split_year_lower(tm_iso_week_year())); + } + + void on_day_of_year() { + auto yday = tm_yday() + 1; + write1(yday / 100); + write2(yday % 100); + } + void on_day_of_month(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write2(tm_mday()); + format_localized('d', 'O'); + } + void on_day_of_month_space(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto mday = to_unsigned(tm_mday()) % 100; + const char* d2 = digits2(mday); + *out_++ = mday < 10 ? ' ' : d2[0]; + *out_++ = d2[1]; + } else { + format_localized('e', 'O'); + } + } + + void on_24_hour(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write2(tm_hour()); + format_localized('H', 'O'); + } + void on_12_hour(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_hour12()); + format_localized('I', 'O'); + } + void on_minute(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write2(tm_min()); + format_localized('M', 'O'); + } + void on_second(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write2(tm_sec()); + format_localized('S', 'O'); + } + + void on_12_hour_time() { + if (is_classic_) { + char buf[8]; + write_digit2_separated(buf, to_unsigned(tm_hour12()), + to_unsigned(tm_min()), to_unsigned(tm_sec()), ':'); + out_ = copy_str<Char>(std::begin(buf), std::end(buf), out_); + *out_++ = ' '; + on_am_pm(); + } else { + format_localized('r'); + } + } + void on_24_hour_time() { + write2(tm_hour()); + *out_++ = ':'; + write2(tm_min()); + } + void on_iso_time() { + char buf[8]; + write_digit2_separated(buf, to_unsigned(tm_hour()), to_unsigned(tm_min()), + to_unsigned(tm_sec()), ':'); + out_ = copy_str<Char>(std::begin(buf), std::end(buf), out_); + } + + void on_am_pm() { + if (is_classic_) { + *out_++ = tm_hour() < 12 ? 'A' : 'P'; + *out_++ = 'M'; + } else { + format_localized('p'); + } + } + + // These apply to chrono durations but not tm. + void on_duration_value() {} + void on_duration_unit() {} +}; + +struct chrono_format_checker : null_chrono_spec_handler<chrono_format_checker> { + FMT_NORETURN void unsupported() { FMT_THROW(format_error("no date")); } + + template <typename Char> + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + FMT_CONSTEXPR void on_24_hour(numeric_system) {} + FMT_CONSTEXPR void on_12_hour(numeric_system) {} + FMT_CONSTEXPR void on_minute(numeric_system) {} + FMT_CONSTEXPR void on_second(numeric_system) {} + FMT_CONSTEXPR void on_12_hour_time() {} + FMT_CONSTEXPR void on_24_hour_time() {} + FMT_CONSTEXPR void on_iso_time() {} + FMT_CONSTEXPR void on_am_pm() {} + FMT_CONSTEXPR void on_duration_value() {} + FMT_CONSTEXPR void on_duration_unit() {} +}; + +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline bool isfinite(T) { + return true; +} + +// Converts value to Int and checks that it's in the range [0, upper). +template <typename T, typename Int, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline Int to_nonnegative_int(T value, Int upper) { + FMT_ASSERT(value >= 0 && to_unsigned(value) <= to_unsigned(upper), + "invalid value"); + (void)upper; + return static_cast<Int>(value); +} +template <typename T, typename Int, FMT_ENABLE_IF(!std::is_integral<T>::value)> +inline Int to_nonnegative_int(T value, Int upper) { + if (value < 0 || value > static_cast<T>(upper)) + FMT_THROW(format_error("invalid value")); + return static_cast<Int>(value); +} + +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +inline T mod(T x, int y) { + return x % static_cast<T>(y); +} +template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> +inline T mod(T x, int y) { + return std::fmod(x, static_cast<T>(y)); +} + +// If T is an integral type, maps T to its unsigned counterpart, otherwise +// leaves it unchanged (unlike std::make_unsigned). +template <typename T, bool INTEGRAL = std::is_integral<T>::value> +struct make_unsigned_or_unchanged { + using type = T; +}; + +template <typename T> struct make_unsigned_or_unchanged<T, true> { + using type = typename std::make_unsigned<T>::type; +}; + +#if FMT_SAFE_DURATION_CAST +// throwing version of safe_duration_cast +template <typename To, typename FromRep, typename FromPeriod> +To fmt_safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) { + int ec; + To to = safe_duration_cast::safe_duration_cast<To>(from, ec); + if (ec) FMT_THROW(format_error("cannot format duration")); + return to; +} +#endif + +template <typename Rep, typename Period, + FMT_ENABLE_IF(std::is_integral<Rep>::value)> +inline std::chrono::duration<Rep, std::milli> get_milliseconds( + std::chrono::duration<Rep, Period> d) { + // this may overflow and/or the result may not fit in the + // target type. +#if FMT_SAFE_DURATION_CAST + using CommonSecondsType = + typename std::common_type<decltype(d), std::chrono::seconds>::type; + const auto d_as_common = fmt_safe_duration_cast<CommonSecondsType>(d); + const auto d_as_whole_seconds = + fmt_safe_duration_cast<std::chrono::seconds>(d_as_common); + // this conversion should be nonproblematic + const auto diff = d_as_common - d_as_whole_seconds; + const auto ms = + fmt_safe_duration_cast<std::chrono::duration<Rep, std::milli>>(diff); + return ms; +#else + auto s = std::chrono::duration_cast<std::chrono::seconds>(d); + return std::chrono::duration_cast<std::chrono::milliseconds>(d - s); +#endif +} + +// Counts the number of fractional digits in the range [0, 18] according to the +// C++20 spec. If more than 18 fractional digits are required then returns 6 for +// microseconds precision. +template <long long Num, long long Den, int N = 0, + bool Enabled = (N < 19) && (Num <= max_value<long long>() / 10)> +struct count_fractional_digits { + static constexpr int value = + Num % Den == 0 ? N : count_fractional_digits<Num * 10, Den, N + 1>::value; +}; + +// Base case that doesn't instantiate any more templates +// in order to avoid overflow. +template <long long Num, long long Den, int N> +struct count_fractional_digits<Num, Den, N, false> { + static constexpr int value = (Num % Den == 0) ? N : 6; +}; + +constexpr long long pow10(std::uint32_t n) { + return n == 0 ? 1 : 10 * pow10(n - 1); +} + +template <class Rep, class Period, + FMT_ENABLE_IF(std::numeric_limits<Rep>::is_signed)> +constexpr std::chrono::duration<Rep, Period> abs( + std::chrono::duration<Rep, Period> d) { + // We need to compare the duration using the count() method directly + // due to a compiler bug in clang-11 regarding the spaceship operator, + // when -Wzero-as-null-pointer-constant is enabled. + // In clang-12 the bug has been fixed. See + // https://bugs.llvm.org/show_bug.cgi?id=46235 and the reproducible example: + // https://www.godbolt.org/z/Knbb5joYx. + return d.count() >= d.zero().count() ? d : -d; +} + +template <class Rep, class Period, + FMT_ENABLE_IF(!std::numeric_limits<Rep>::is_signed)> +constexpr std::chrono::duration<Rep, Period> abs( + std::chrono::duration<Rep, Period> d) { + return d; +} + +template <typename Char, typename Rep, typename OutputIt, + FMT_ENABLE_IF(std::is_integral<Rep>::value)> +OutputIt format_duration_value(OutputIt out, Rep val, int) { + return write<Char>(out, val); +} + +template <typename Char, typename Rep, typename OutputIt, + FMT_ENABLE_IF(std::is_floating_point<Rep>::value)> +OutputIt format_duration_value(OutputIt out, Rep val, int precision) { + auto specs = basic_format_specs<Char>(); + specs.precision = precision; + specs.type = precision >= 0 ? presentation_type::fixed_lower + : presentation_type::general_lower; + return write<Char>(out, val, specs); +} + +template <typename Char, typename OutputIt> +OutputIt copy_unit(string_view unit, OutputIt out, Char) { + return std::copy(unit.begin(), unit.end(), out); +} + +template <typename OutputIt> +OutputIt copy_unit(string_view unit, OutputIt out, wchar_t) { + // This works when wchar_t is UTF-32 because units only contain characters + // that have the same representation in UTF-16 and UTF-32. + utf8_to_utf16 u(unit); + return std::copy(u.c_str(), u.c_str() + u.size(), out); +} + +template <typename Char, typename Period, typename OutputIt> +OutputIt format_duration_unit(OutputIt out) { + if (const char* unit = get_units<Period>()) + return copy_unit(string_view(unit), out, Char()); + *out++ = '['; + out = write<Char>(out, Period::num); + if (const_check(Period::den != 1)) { + *out++ = '/'; + out = write<Char>(out, Period::den); + } + *out++ = ']'; + *out++ = 's'; + return out; +} + +class get_locale { + private: + union { + std::locale locale_; + }; + bool has_locale_ = false; + + public: + get_locale(bool localized, locale_ref loc) : has_locale_(localized) { + if (localized) + ::new (&locale_) std::locale(loc.template get<std::locale>()); + } + ~get_locale() { + if (has_locale_) locale_.~locale(); + } + operator const std::locale&() const { + return has_locale_ ? locale_ : get_classic_locale(); + } +}; + +template <typename FormatContext, typename OutputIt, typename Rep, + typename Period> +struct chrono_formatter { + FormatContext& context; + OutputIt out; + int precision; + bool localized = false; + // rep is unsigned to avoid overflow. + using rep = + conditional_t<std::is_integral<Rep>::value && sizeof(Rep) < sizeof(int), + unsigned, typename make_unsigned_or_unchanged<Rep>::type>; + rep val; + using seconds = std::chrono::duration<rep>; + seconds s; + using milliseconds = std::chrono::duration<rep, std::milli>; + bool negative; + + using char_type = typename FormatContext::char_type; + using tm_writer_type = tm_writer<OutputIt, char_type>; + + chrono_formatter(FormatContext& ctx, OutputIt o, + std::chrono::duration<Rep, Period> d) + : context(ctx), + out(o), + val(static_cast<rep>(d.count())), + negative(false) { + if (d.count() < 0) { + val = 0 - val; + negative = true; + } + + // this may overflow and/or the result may not fit in the + // target type. +#if FMT_SAFE_DURATION_CAST + // might need checked conversion (rep!=Rep) + auto tmpval = std::chrono::duration<rep, Period>(val); + s = fmt_safe_duration_cast<seconds>(tmpval); +#else + s = std::chrono::duration_cast<seconds>( + std::chrono::duration<rep, Period>(val)); +#endif + } + + // returns true if nan or inf, writes to out. + bool handle_nan_inf() { + if (isfinite(val)) { + return false; + } + if (isnan(val)) { + write_nan(); + return true; + } + // must be +-inf + if (val > 0) { + write_pinf(); + } else { + write_ninf(); + } + return true; + } + + Rep hour() const { return static_cast<Rep>(mod((s.count() / 3600), 24)); } + + Rep hour12() const { + Rep hour = static_cast<Rep>(mod((s.count() / 3600), 12)); + return hour <= 0 ? 12 : hour; + } + + Rep minute() const { return static_cast<Rep>(mod((s.count() / 60), 60)); } + Rep second() const { return static_cast<Rep>(mod(s.count(), 60)); } + + std::tm time() const { + auto time = std::tm(); + time.tm_hour = to_nonnegative_int(hour(), 24); + time.tm_min = to_nonnegative_int(minute(), 60); + time.tm_sec = to_nonnegative_int(second(), 60); + return time; + } + + void write_sign() { + if (negative) { + *out++ = '-'; + negative = false; + } + } + + void write(Rep value, int width) { + write_sign(); + if (isnan(value)) return write_nan(); + uint32_or_64_or_128_t<int> n = + to_unsigned(to_nonnegative_int(value, max_value<int>())); + int num_digits = detail::count_digits(n); + if (width > num_digits) out = std::fill_n(out, width - num_digits, '0'); + out = format_decimal<char_type>(out, n, num_digits).end; + } + + template <typename Duration> void write_fractional_seconds(Duration d) { + FMT_ASSERT(!std::is_floating_point<typename Duration::rep>::value, ""); + constexpr auto num_fractional_digits = + count_fractional_digits<Duration::period::num, + Duration::period::den>::value; + + using subsecond_precision = std::chrono::duration< + typename std::common_type<typename Duration::rep, + std::chrono::seconds::rep>::type, + std::ratio<1, detail::pow10(num_fractional_digits)>>; + if (std::ratio_less<typename subsecond_precision::period, + std::chrono::seconds::period>::value) { + *out++ = '.'; + auto fractional = + detail::abs(d) - std::chrono::duration_cast<std::chrono::seconds>(d); + auto subseconds = + std::chrono::treat_as_floating_point< + typename subsecond_precision::rep>::value + ? fractional.count() + : std::chrono::duration_cast<subsecond_precision>(fractional) + .count(); + uint32_or_64_or_128_t<long long> n = + to_unsigned(to_nonnegative_int(subseconds, max_value<long long>())); + int num_digits = detail::count_digits(n); + if (num_fractional_digits > num_digits) + out = std::fill_n(out, num_fractional_digits - num_digits, '0'); + out = format_decimal<char_type>(out, n, num_digits).end; + } + } + + void write_nan() { std::copy_n("nan", 3, out); } + void write_pinf() { std::copy_n("inf", 3, out); } + void write_ninf() { std::copy_n("-inf", 4, out); } + + template <typename Callback, typename... Args> + void format_tm(const tm& time, Callback cb, Args... args) { + if (isnan(val)) return write_nan(); + get_locale loc(localized, context.locale()); + auto w = tm_writer_type(loc, out, time); + (w.*cb)(args...); + out = w.out(); + } + + void on_text(const char_type* begin, const char_type* end) { + std::copy(begin, end, out); + } + + // These are not implemented because durations don't have date information. + void on_abbr_weekday() {} + void on_full_weekday() {} + void on_dec0_weekday(numeric_system) {} + void on_dec1_weekday(numeric_system) {} + void on_abbr_month() {} + void on_full_month() {} + void on_datetime(numeric_system) {} + void on_loc_date(numeric_system) {} + void on_loc_time(numeric_system) {} + void on_us_date() {} + void on_iso_date() {} + void on_utc_offset() {} + void on_tz_name() {} + void on_year(numeric_system) {} + void on_short_year(numeric_system) {} + void on_offset_year() {} + void on_century(numeric_system) {} + void on_iso_week_based_year() {} + void on_iso_week_based_short_year() {} + void on_dec_month(numeric_system) {} + void on_dec0_week_of_year(numeric_system) {} + void on_dec1_week_of_year(numeric_system) {} + void on_iso_week_of_year(numeric_system) {} + void on_day_of_year() {} + void on_day_of_month(numeric_system) {} + void on_day_of_month_space(numeric_system) {} + + void on_24_hour(numeric_system ns) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(hour(), 2); + auto time = tm(); + time.tm_hour = to_nonnegative_int(hour(), 24); + format_tm(time, &tm_writer_type::on_24_hour, ns); + } + + void on_12_hour(numeric_system ns) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(hour12(), 2); + auto time = tm(); + time.tm_hour = to_nonnegative_int(hour12(), 12); + format_tm(time, &tm_writer_type::on_12_hour, ns); + } + + void on_minute(numeric_system ns) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) return write(minute(), 2); + auto time = tm(); + time.tm_min = to_nonnegative_int(minute(), 60); + format_tm(time, &tm_writer_type::on_minute, ns); + } + + void on_second(numeric_system ns) { + if (handle_nan_inf()) return; + + if (ns == numeric_system::standard) { + if (std::is_floating_point<rep>::value) { + constexpr auto num_fractional_digits = + count_fractional_digits<Period::num, Period::den>::value; + auto buf = memory_buffer(); + format_to(std::back_inserter(buf), runtime("{:.{}f}"), + std::fmod(val * static_cast<rep>(Period::num) / + static_cast<rep>(Period::den), + 60), + num_fractional_digits); + if (negative) *out++ = '-'; + if (buf.size() < 2 || buf[1] == '.') *out++ = '0'; + out = std::copy(buf.begin(), buf.end(), out); + } else { + write(second(), 2); + write_fractional_seconds(std::chrono::duration<rep, Period>(val)); + } + return; + } + auto time = tm(); + time.tm_sec = to_nonnegative_int(second(), 60); + format_tm(time, &tm_writer_type::on_second, ns); + } + + void on_12_hour_time() { + if (handle_nan_inf()) return; + format_tm(time(), &tm_writer_type::on_12_hour_time); + } + + void on_24_hour_time() { + if (handle_nan_inf()) { + *out++ = ':'; + handle_nan_inf(); + return; + } + + write(hour(), 2); + *out++ = ':'; + write(minute(), 2); + } + + void on_iso_time() { + on_24_hour_time(); + *out++ = ':'; + if (handle_nan_inf()) return; + on_second(numeric_system::standard); + } + + void on_am_pm() { + if (handle_nan_inf()) return; + format_tm(time(), &tm_writer_type::on_am_pm); + } + + void on_duration_value() { + if (handle_nan_inf()) return; + write_sign(); + out = format_duration_value<char_type>(out, val, precision); + } + + void on_duration_unit() { + out = format_duration_unit<char_type, Period>(out); + } +}; + +FMT_END_DETAIL_NAMESPACE + +#if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907 +using weekday = std::chrono::weekday; +#else +// A fallback version of weekday. +class weekday { + private: + unsigned char value; + + public: + weekday() = default; + explicit constexpr weekday(unsigned wd) noexcept + : value(static_cast<unsigned char>(wd != 7 ? wd : 0)) {} + constexpr unsigned c_encoding() const noexcept { return value; } +}; + +class year_month_day {}; +#endif + +// A rudimentary weekday formatter. +template <typename Char> struct formatter<weekday, Char> { + private: + bool localized = false; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx) + -> decltype(ctx.begin()) { + auto begin = ctx.begin(), end = ctx.end(); + if (begin != end && *begin == 'L') { + ++begin; + localized = true; + } + return begin; + } + + template <typename FormatContext> + auto format(weekday wd, FormatContext& ctx) const -> decltype(ctx.out()) { + auto time = std::tm(); + time.tm_wday = static_cast<int>(wd.c_encoding()); + detail::get_locale loc(localized, ctx.locale()); + auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time); + w.on_abbr_weekday(); + return w.out(); + } +}; + +template <typename Rep, typename Period, typename Char> +struct formatter<std::chrono::duration<Rep, Period>, Char> { + private: + basic_format_specs<Char> specs; + int precision = -1; + using arg_ref_type = detail::arg_ref<Char>; + arg_ref_type width_ref; + arg_ref_type precision_ref; + bool localized = false; + basic_string_view<Char> format_str; + using duration = std::chrono::duration<Rep, Period>; + + struct spec_handler { + formatter& f; + basic_format_parse_context<Char>& context; + basic_string_view<Char> format_str; + + template <typename Id> FMT_CONSTEXPR arg_ref_type make_arg_ref(Id arg_id) { + context.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<Char> arg_id) { + context.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR arg_ref_type make_arg_ref(detail::auto_id) { + return arg_ref_type(context.next_arg_id()); + } + + void on_error(const char* msg) { FMT_THROW(format_error(msg)); } + FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) { + f.specs.fill = fill; + } + FMT_CONSTEXPR void on_align(align_t align) { f.specs.align = align; } + FMT_CONSTEXPR void on_width(int width) { f.specs.width = width; } + FMT_CONSTEXPR void on_precision(int _precision) { + f.precision = _precision; + } + FMT_CONSTEXPR void end_precision() {} + + template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + f.width_ref = make_arg_ref(arg_id); + } + + template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + f.precision_ref = make_arg_ref(arg_id); + } + }; + + using iterator = typename basic_format_parse_context<Char>::iterator; + struct parse_range { + iterator begin; + iterator end; + }; + + FMT_CONSTEXPR parse_range do_parse(basic_format_parse_context<Char>& ctx) { + auto begin = ctx.begin(), end = ctx.end(); + if (begin == end || *begin == '}') return {begin, begin}; + spec_handler handler{*this, ctx, format_str}; + begin = detail::parse_align(begin, end, handler); + if (begin == end) return {begin, begin}; + begin = detail::parse_width(begin, end, handler); + if (begin == end) return {begin, begin}; + if (*begin == '.') { + if (std::is_floating_point<Rep>::value) + begin = detail::parse_precision(begin, end, handler); + else + handler.on_error("precision not allowed for this argument type"); + } + if (begin != end && *begin == 'L') { + ++begin; + localized = true; + } + end = detail::parse_chrono_format(begin, end, + detail::chrono_format_checker()); + return {begin, end}; + } + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx) + -> decltype(ctx.begin()) { + auto range = do_parse(ctx); + format_str = basic_string_view<Char>( + &*range.begin, detail::to_unsigned(range.end - range.begin)); + return range.end; + } + + template <typename FormatContext> + auto format(const duration& d, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto specs_copy = specs; + auto precision_copy = precision; + auto begin = format_str.begin(), end = format_str.end(); + // As a possible future optimization, we could avoid extra copying if width + // is not specified. + basic_memory_buffer<Char> buf; + auto out = std::back_inserter(buf); + detail::handle_dynamic_spec<detail::width_checker>(specs_copy.width, + width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>(precision_copy, + precision_ref, ctx); + if (begin == end || *begin == '}') { + out = detail::format_duration_value<Char>(out, d.count(), precision_copy); + detail::format_duration_unit<Char, Period>(out); + } else { + detail::chrono_formatter<FormatContext, decltype(out), Rep, Period> f( + ctx, out, d); + f.precision = precision_copy; + f.localized = localized; + detail::parse_chrono_format(begin, end, f); + } + return detail::write( + ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs_copy); + } +}; + +template <typename Char, typename Duration> +struct formatter<std::chrono::time_point<std::chrono::system_clock, Duration>, + Char> : formatter<std::tm, Char> { + FMT_CONSTEXPR formatter() { + this->do_parse(default_specs, + default_specs + sizeof(default_specs) / sizeof(Char)); + } + + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return this->do_parse(ctx.begin(), ctx.end(), true); + } + + template <typename FormatContext> + auto format(std::chrono::time_point<std::chrono::system_clock> val, + FormatContext& ctx) const -> decltype(ctx.out()) { + return formatter<std::tm, Char>::format(localtime(val), ctx); + } + + static constexpr const Char default_specs[] = {'%', 'F', ' ', '%', 'T'}; +}; + +template <typename Char, typename Duration> +constexpr const Char + formatter<std::chrono::time_point<std::chrono::system_clock, Duration>, + Char>::default_specs[]; + +template <typename Char> struct formatter<std::tm, Char> { + private: + enum class spec { + unknown, + year_month_day, + hh_mm_ss, + }; + spec spec_ = spec::unknown; + basic_string_view<Char> specs; + + protected: + template <typename It> + FMT_CONSTEXPR auto do_parse(It begin, It end, bool with_default = false) + -> It { + if (begin != end && *begin == ':') ++begin; + end = detail::parse_chrono_format(begin, end, detail::tm_format_checker()); + if (!with_default || end != begin) + specs = {begin, detail::to_unsigned(end - begin)}; + // basic_string_view<>::compare isn't constexpr before C++17. + if (specs.size() == 2 && specs[0] == Char('%')) { + if (specs[1] == Char('F')) + spec_ = spec::year_month_day; + else if (specs[1] == Char('T')) + spec_ = spec::hh_mm_ss; + } + return end; + } + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return this->do_parse(ctx.begin(), ctx.end()); + } + + template <typename FormatContext> + auto format(const std::tm& tm, FormatContext& ctx) const + -> decltype(ctx.out()) { + const auto loc_ref = ctx.locale(); + detail::get_locale loc(static_cast<bool>(loc_ref), loc_ref); + auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), tm); + if (spec_ == spec::year_month_day) + w.on_iso_date(); + else if (spec_ == spec::hh_mm_ss) + w.on_iso_time(); + else + detail::parse_chrono_format(specs.begin(), specs.end(), w); + return w.out(); + } +}; + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_CHRONO_H_ diff --git a/src/fmtlib/fmt/color.h b/src/fmtlib/fmt/color.h new file mode 100644 index 0000000..e6212d2 --- /dev/null +++ b/src/fmtlib/fmt/color.h @@ -0,0 +1,651 @@ +// Formatting library for C++ - color support +// +// Copyright (c) 2018 - present, Victor Zverovich and fmt contributors +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_COLOR_H_ +#define FMT_COLOR_H_ + +#include "format.h" + +FMT_BEGIN_NAMESPACE +FMT_MODULE_EXPORT_BEGIN + +enum class color : uint32_t { + alice_blue = 0xF0F8FF, // rgb(240,248,255) + antique_white = 0xFAEBD7, // rgb(250,235,215) + aqua = 0x00FFFF, // rgb(0,255,255) + aquamarine = 0x7FFFD4, // rgb(127,255,212) + azure = 0xF0FFFF, // rgb(240,255,255) + beige = 0xF5F5DC, // rgb(245,245,220) + bisque = 0xFFE4C4, // rgb(255,228,196) + black = 0x000000, // rgb(0,0,0) + blanched_almond = 0xFFEBCD, // rgb(255,235,205) + blue = 0x0000FF, // rgb(0,0,255) + blue_violet = 0x8A2BE2, // rgb(138,43,226) + brown = 0xA52A2A, // rgb(165,42,42) + burly_wood = 0xDEB887, // rgb(222,184,135) + cadet_blue = 0x5F9EA0, // rgb(95,158,160) + chartreuse = 0x7FFF00, // rgb(127,255,0) + chocolate = 0xD2691E, // rgb(210,105,30) + coral = 0xFF7F50, // rgb(255,127,80) + cornflower_blue = 0x6495ED, // rgb(100,149,237) + cornsilk = 0xFFF8DC, // rgb(255,248,220) + crimson = 0xDC143C, // rgb(220,20,60) + cyan = 0x00FFFF, // rgb(0,255,255) + dark_blue = 0x00008B, // rgb(0,0,139) + dark_cyan = 0x008B8B, // rgb(0,139,139) + dark_golden_rod = 0xB8860B, // rgb(184,134,11) + dark_gray = 0xA9A9A9, // rgb(169,169,169) + dark_green = 0x006400, // rgb(0,100,0) + dark_khaki = 0xBDB76B, // rgb(189,183,107) + dark_magenta = 0x8B008B, // rgb(139,0,139) + dark_olive_green = 0x556B2F, // rgb(85,107,47) + dark_orange = 0xFF8C00, // rgb(255,140,0) + dark_orchid = 0x9932CC, // rgb(153,50,204) + dark_red = 0x8B0000, // rgb(139,0,0) + dark_salmon = 0xE9967A, // rgb(233,150,122) + dark_sea_green = 0x8FBC8F, // rgb(143,188,143) + dark_slate_blue = 0x483D8B, // rgb(72,61,139) + dark_slate_gray = 0x2F4F4F, // rgb(47,79,79) + dark_turquoise = 0x00CED1, // rgb(0,206,209) + dark_violet = 0x9400D3, // rgb(148,0,211) + deep_pink = 0xFF1493, // rgb(255,20,147) + deep_sky_blue = 0x00BFFF, // rgb(0,191,255) + dim_gray = 0x696969, // rgb(105,105,105) + dodger_blue = 0x1E90FF, // rgb(30,144,255) + fire_brick = 0xB22222, // rgb(178,34,34) + floral_white = 0xFFFAF0, // rgb(255,250,240) + forest_green = 0x228B22, // rgb(34,139,34) + fuchsia = 0xFF00FF, // rgb(255,0,255) + gainsboro = 0xDCDCDC, // rgb(220,220,220) + ghost_white = 0xF8F8FF, // rgb(248,248,255) + gold = 0xFFD700, // rgb(255,215,0) + golden_rod = 0xDAA520, // rgb(218,165,32) + gray = 0x808080, // rgb(128,128,128) + green = 0x008000, // rgb(0,128,0) + green_yellow = 0xADFF2F, // rgb(173,255,47) + honey_dew = 0xF0FFF0, // rgb(240,255,240) + hot_pink = 0xFF69B4, // rgb(255,105,180) + indian_red = 0xCD5C5C, // rgb(205,92,92) + indigo = 0x4B0082, // rgb(75,0,130) + ivory = 0xFFFFF0, // rgb(255,255,240) + khaki = 0xF0E68C, // rgb(240,230,140) + lavender = 0xE6E6FA, // rgb(230,230,250) + lavender_blush = 0xFFF0F5, // rgb(255,240,245) + lawn_green = 0x7CFC00, // rgb(124,252,0) + lemon_chiffon = 0xFFFACD, // rgb(255,250,205) + light_blue = 0xADD8E6, // rgb(173,216,230) + light_coral = 0xF08080, // rgb(240,128,128) + light_cyan = 0xE0FFFF, // rgb(224,255,255) + light_golden_rod_yellow = 0xFAFAD2, // rgb(250,250,210) + light_gray = 0xD3D3D3, // rgb(211,211,211) + light_green = 0x90EE90, // rgb(144,238,144) + light_pink = 0xFFB6C1, // rgb(255,182,193) + light_salmon = 0xFFA07A, // rgb(255,160,122) + light_sea_green = 0x20B2AA, // rgb(32,178,170) + light_sky_blue = 0x87CEFA, // rgb(135,206,250) + light_slate_gray = 0x778899, // rgb(119,136,153) + light_steel_blue = 0xB0C4DE, // rgb(176,196,222) + light_yellow = 0xFFFFE0, // rgb(255,255,224) + lime = 0x00FF00, // rgb(0,255,0) + lime_green = 0x32CD32, // rgb(50,205,50) + linen = 0xFAF0E6, // rgb(250,240,230) + magenta = 0xFF00FF, // rgb(255,0,255) + maroon = 0x800000, // rgb(128,0,0) + medium_aquamarine = 0x66CDAA, // rgb(102,205,170) + medium_blue = 0x0000CD, // rgb(0,0,205) + medium_orchid = 0xBA55D3, // rgb(186,85,211) + medium_purple = 0x9370DB, // rgb(147,112,219) + medium_sea_green = 0x3CB371, // rgb(60,179,113) + medium_slate_blue = 0x7B68EE, // rgb(123,104,238) + medium_spring_green = 0x00FA9A, // rgb(0,250,154) + medium_turquoise = 0x48D1CC, // rgb(72,209,204) + medium_violet_red = 0xC71585, // rgb(199,21,133) + midnight_blue = 0x191970, // rgb(25,25,112) + mint_cream = 0xF5FFFA, // rgb(245,255,250) + misty_rose = 0xFFE4E1, // rgb(255,228,225) + moccasin = 0xFFE4B5, // rgb(255,228,181) + navajo_white = 0xFFDEAD, // rgb(255,222,173) + navy = 0x000080, // rgb(0,0,128) + old_lace = 0xFDF5E6, // rgb(253,245,230) + olive = 0x808000, // rgb(128,128,0) + olive_drab = 0x6B8E23, // rgb(107,142,35) + orange = 0xFFA500, // rgb(255,165,0) + orange_red = 0xFF4500, // rgb(255,69,0) + orchid = 0xDA70D6, // rgb(218,112,214) + pale_golden_rod = 0xEEE8AA, // rgb(238,232,170) + pale_green = 0x98FB98, // rgb(152,251,152) + pale_turquoise = 0xAFEEEE, // rgb(175,238,238) + pale_violet_red = 0xDB7093, // rgb(219,112,147) + papaya_whip = 0xFFEFD5, // rgb(255,239,213) + peach_puff = 0xFFDAB9, // rgb(255,218,185) + peru = 0xCD853F, // rgb(205,133,63) + pink = 0xFFC0CB, // rgb(255,192,203) + plum = 0xDDA0DD, // rgb(221,160,221) + powder_blue = 0xB0E0E6, // rgb(176,224,230) + purple = 0x800080, // rgb(128,0,128) + rebecca_purple = 0x663399, // rgb(102,51,153) + red = 0xFF0000, // rgb(255,0,0) + rosy_brown = 0xBC8F8F, // rgb(188,143,143) + royal_blue = 0x4169E1, // rgb(65,105,225) + saddle_brown = 0x8B4513, // rgb(139,69,19) + salmon = 0xFA8072, // rgb(250,128,114) + sandy_brown = 0xF4A460, // rgb(244,164,96) + sea_green = 0x2E8B57, // rgb(46,139,87) + sea_shell = 0xFFF5EE, // rgb(255,245,238) + sienna = 0xA0522D, // rgb(160,82,45) + silver = 0xC0C0C0, // rgb(192,192,192) + sky_blue = 0x87CEEB, // rgb(135,206,235) + slate_blue = 0x6A5ACD, // rgb(106,90,205) + slate_gray = 0x708090, // rgb(112,128,144) + snow = 0xFFFAFA, // rgb(255,250,250) + spring_green = 0x00FF7F, // rgb(0,255,127) + steel_blue = 0x4682B4, // rgb(70,130,180) + tan = 0xD2B48C, // rgb(210,180,140) + teal = 0x008080, // rgb(0,128,128) + thistle = 0xD8BFD8, // rgb(216,191,216) + tomato = 0xFF6347, // rgb(255,99,71) + turquoise = 0x40E0D0, // rgb(64,224,208) + violet = 0xEE82EE, // rgb(238,130,238) + wheat = 0xF5DEB3, // rgb(245,222,179) + white = 0xFFFFFF, // rgb(255,255,255) + white_smoke = 0xF5F5F5, // rgb(245,245,245) + yellow = 0xFFFF00, // rgb(255,255,0) + yellow_green = 0x9ACD32 // rgb(154,205,50) +}; // enum class color + +enum class terminal_color : uint8_t { + black = 30, + red, + green, + yellow, + blue, + magenta, + cyan, + white, + bright_black = 90, + bright_red, + bright_green, + bright_yellow, + bright_blue, + bright_magenta, + bright_cyan, + bright_white +}; + +enum class emphasis : uint8_t { + bold = 1, + faint = 1 << 1, + italic = 1 << 2, + underline = 1 << 3, + blink = 1 << 4, + reverse = 1 << 5, + conceal = 1 << 6, + strikethrough = 1 << 7, +}; + +// rgb is a struct for red, green and blue colors. +// Using the name "rgb" makes some editors show the color in a tooltip. +struct rgb { + FMT_CONSTEXPR rgb() : r(0), g(0), b(0) {} + FMT_CONSTEXPR rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {} + FMT_CONSTEXPR rgb(uint32_t hex) + : r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {} + FMT_CONSTEXPR rgb(color hex) + : r((uint32_t(hex) >> 16) & 0xFF), + g((uint32_t(hex) >> 8) & 0xFF), + b(uint32_t(hex) & 0xFF) {} + uint8_t r; + uint8_t g; + uint8_t b; +}; + +FMT_BEGIN_DETAIL_NAMESPACE + +// color is a struct of either a rgb color or a terminal color. +struct color_type { + FMT_CONSTEXPR color_type() noexcept : is_rgb(), value{} {} + FMT_CONSTEXPR color_type(color rgb_color) noexcept : is_rgb(true), value{} { + value.rgb_color = static_cast<uint32_t>(rgb_color); + } + FMT_CONSTEXPR color_type(rgb rgb_color) noexcept : is_rgb(true), value{} { + value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16) | + (static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b; + } + FMT_CONSTEXPR color_type(terminal_color term_color) noexcept + : is_rgb(), value{} { + value.term_color = static_cast<uint8_t>(term_color); + } + bool is_rgb; + union color_union { + uint8_t term_color; + uint32_t rgb_color; + } value; +}; + +FMT_END_DETAIL_NAMESPACE + +/** A text style consisting of foreground and background colors and emphasis. */ +class text_style { + public: + FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept + : set_foreground_color(), set_background_color(), ems(em) {} + + FMT_CONSTEXPR text_style& operator|=(const text_style& rhs) { + if (!set_foreground_color) { + set_foreground_color = rhs.set_foreground_color; + foreground_color = rhs.foreground_color; + } else if (rhs.set_foreground_color) { + if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb) + FMT_THROW(format_error("can't OR a terminal color")); + foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color; + } + + if (!set_background_color) { + set_background_color = rhs.set_background_color; + background_color = rhs.background_color; + } else if (rhs.set_background_color) { + if (!background_color.is_rgb || !rhs.background_color.is_rgb) + FMT_THROW(format_error("can't OR a terminal color")); + background_color.value.rgb_color |= rhs.background_color.value.rgb_color; + } + + ems = static_cast<emphasis>(static_cast<uint8_t>(ems) | + static_cast<uint8_t>(rhs.ems)); + return *this; + } + + friend FMT_CONSTEXPR text_style operator|(text_style lhs, + const text_style& rhs) { + return lhs |= rhs; + } + + FMT_CONSTEXPR bool has_foreground() const noexcept { + return set_foreground_color; + } + FMT_CONSTEXPR bool has_background() const noexcept { + return set_background_color; + } + FMT_CONSTEXPR bool has_emphasis() const noexcept { + return static_cast<uint8_t>(ems) != 0; + } + FMT_CONSTEXPR detail::color_type get_foreground() const noexcept { + FMT_ASSERT(has_foreground(), "no foreground specified for this style"); + return foreground_color; + } + FMT_CONSTEXPR detail::color_type get_background() const noexcept { + FMT_ASSERT(has_background(), "no background specified for this style"); + return background_color; + } + FMT_CONSTEXPR emphasis get_emphasis() const noexcept { + FMT_ASSERT(has_emphasis(), "no emphasis specified for this style"); + return ems; + } + + private: + FMT_CONSTEXPR text_style(bool is_foreground, + detail::color_type text_color) noexcept + : set_foreground_color(), set_background_color(), ems() { + if (is_foreground) { + foreground_color = text_color; + set_foreground_color = true; + } else { + background_color = text_color; + set_background_color = true; + } + } + + friend FMT_CONSTEXPR text_style fg(detail::color_type foreground) noexcept; + + friend FMT_CONSTEXPR text_style bg(detail::color_type background) noexcept; + + detail::color_type foreground_color; + detail::color_type background_color; + bool set_foreground_color; + bool set_background_color; + emphasis ems; +}; + +/** Creates a text style from the foreground (text) color. */ +FMT_CONSTEXPR inline text_style fg(detail::color_type foreground) noexcept { + return text_style(true, foreground); +} + +/** Creates a text style from the background color. */ +FMT_CONSTEXPR inline text_style bg(detail::color_type background) noexcept { + return text_style(false, background); +} + +FMT_CONSTEXPR inline text_style operator|(emphasis lhs, emphasis rhs) noexcept { + return text_style(lhs) | rhs; +} + +FMT_BEGIN_DETAIL_NAMESPACE + +template <typename Char> struct ansi_color_escape { + FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color, + const char* esc) noexcept { + // If we have a terminal color, we need to output another escape code + // sequence. + if (!text_color.is_rgb) { + bool is_background = esc == string_view("\x1b[48;2;"); + uint32_t value = text_color.value.term_color; + // Background ASCII codes are the same as the foreground ones but with + // 10 more. + if (is_background) value += 10u; + + size_t index = 0; + buffer[index++] = static_cast<Char>('\x1b'); + buffer[index++] = static_cast<Char>('['); + + if (value >= 100u) { + buffer[index++] = static_cast<Char>('1'); + value %= 100u; + } + buffer[index++] = static_cast<Char>('0' + value / 10u); + buffer[index++] = static_cast<Char>('0' + value % 10u); + + buffer[index++] = static_cast<Char>('m'); + buffer[index++] = static_cast<Char>('\0'); + return; + } + + for (int i = 0; i < 7; i++) { + buffer[i] = static_cast<Char>(esc[i]); + } + rgb color(text_color.value.rgb_color); + to_esc(color.r, buffer + 7, ';'); + to_esc(color.g, buffer + 11, ';'); + to_esc(color.b, buffer + 15, 'm'); + buffer[19] = static_cast<Char>(0); + } + FMT_CONSTEXPR ansi_color_escape(emphasis em) noexcept { + uint8_t em_codes[num_emphases] = {}; + if (has_emphasis(em, emphasis::bold)) em_codes[0] = 1; + if (has_emphasis(em, emphasis::faint)) em_codes[1] = 2; + if (has_emphasis(em, emphasis::italic)) em_codes[2] = 3; + if (has_emphasis(em, emphasis::underline)) em_codes[3] = 4; + if (has_emphasis(em, emphasis::blink)) em_codes[4] = 5; + if (has_emphasis(em, emphasis::reverse)) em_codes[5] = 7; + if (has_emphasis(em, emphasis::conceal)) em_codes[6] = 8; + if (has_emphasis(em, emphasis::strikethrough)) em_codes[7] = 9; + + size_t index = 0; + for (size_t i = 0; i < num_emphases; ++i) { + if (!em_codes[i]) continue; + buffer[index++] = static_cast<Char>('\x1b'); + buffer[index++] = static_cast<Char>('['); + buffer[index++] = static_cast<Char>('0' + em_codes[i]); + buffer[index++] = static_cast<Char>('m'); + } + buffer[index++] = static_cast<Char>(0); + } + FMT_CONSTEXPR operator const Char*() const noexcept { return buffer; } + + FMT_CONSTEXPR const Char* begin() const noexcept { return buffer; } + FMT_CONSTEXPR_CHAR_TRAITS const Char* end() const noexcept { + return buffer + std::char_traits<Char>::length(buffer); + } + + private: + static constexpr size_t num_emphases = 8; + Char buffer[7u + 3u * num_emphases + 1u]; + + static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out, + char delimiter) noexcept { + out[0] = static_cast<Char>('0' + c / 100); + out[1] = static_cast<Char>('0' + c / 10 % 10); + out[2] = static_cast<Char>('0' + c % 10); + out[3] = static_cast<Char>(delimiter); + } + static FMT_CONSTEXPR bool has_emphasis(emphasis em, emphasis mask) noexcept { + return static_cast<uint8_t>(em) & static_cast<uint8_t>(mask); + } +}; + +template <typename Char> +FMT_CONSTEXPR ansi_color_escape<Char> make_foreground_color( + detail::color_type foreground) noexcept { + return ansi_color_escape<Char>(foreground, "\x1b[38;2;"); +} + +template <typename Char> +FMT_CONSTEXPR ansi_color_escape<Char> make_background_color( + detail::color_type background) noexcept { + return ansi_color_escape<Char>(background, "\x1b[48;2;"); +} + +template <typename Char> +FMT_CONSTEXPR ansi_color_escape<Char> make_emphasis(emphasis em) noexcept { + return ansi_color_escape<Char>(em); +} + +template <typename Char> inline void fputs(const Char* chars, FILE* stream) { + int result = std::fputs(chars, stream); + if (result < 0) + FMT_THROW(system_error(errno, FMT_STRING("cannot write to file"))); +} + +template <> inline void fputs<wchar_t>(const wchar_t* chars, FILE* stream) { + int result = std::fputws(chars, stream); + if (result < 0) + FMT_THROW(system_error(errno, FMT_STRING("cannot write to file"))); +} + +template <typename Char> inline void reset_color(FILE* stream) { + fputs("\x1b[0m", stream); +} + +template <> inline void reset_color<wchar_t>(FILE* stream) { + fputs(L"\x1b[0m", stream); +} + +template <typename Char> inline void reset_color(buffer<Char>& buffer) { + auto reset_color = string_view("\x1b[0m"); + buffer.append(reset_color.begin(), reset_color.end()); +} + +template <typename T> struct styled_arg { + const T& value; + text_style style; +}; + +template <typename Char> +void vformat_to(buffer<Char>& buf, const text_style& ts, + basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + bool has_style = false; + if (ts.has_emphasis()) { + has_style = true; + auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis()); + buf.append(emphasis.begin(), emphasis.end()); + } + if (ts.has_foreground()) { + has_style = true; + auto foreground = detail::make_foreground_color<Char>(ts.get_foreground()); + buf.append(foreground.begin(), foreground.end()); + } + if (ts.has_background()) { + has_style = true; + auto background = detail::make_background_color<Char>(ts.get_background()); + buf.append(background.begin(), background.end()); + } + detail::vformat_to(buf, format_str, args, {}); + if (has_style) detail::reset_color<Char>(buf); +} + +FMT_END_DETAIL_NAMESPACE + +template <typename S, typename Char = char_t<S>> +void vprint(std::FILE* f, const text_style& ts, const S& format, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buf; + detail::vformat_to(buf, ts, detail::to_string_view(format), args); + if (detail::is_utf8()) { + detail::print(f, basic_string_view<Char>(buf.begin(), buf.size())); + } else { + buf.push_back(Char(0)); + detail::fputs(buf.data(), f); + } +} + +/** + \rst + Formats a string and prints it to the specified file stream using ANSI + escape sequences to specify text formatting. + + **Example**:: + + fmt::print(fmt::emphasis::bold | fg(fmt::color::red), + "Elapsed time: {0:.2f} seconds", 1.23); + \endrst + */ +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_string<S>::value)> +void print(std::FILE* f, const text_style& ts, const S& format_str, + const Args&... args) { + vprint(f, ts, format_str, + fmt::make_format_args<buffer_context<char_t<S>>>(args...)); +} + +/** + \rst + Formats a string and prints it to stdout using ANSI escape sequences to + specify text formatting. + + **Example**:: + + fmt::print(fmt::emphasis::bold | fg(fmt::color::red), + "Elapsed time: {0:.2f} seconds", 1.23); + \endrst + */ +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_string<S>::value)> +void print(const text_style& ts, const S& format_str, const Args&... args) { + return print(stdout, ts, format_str, args...); +} + +template <typename S, typename Char = char_t<S>> +inline std::basic_string<Char> vformat( + const text_style& ts, const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + basic_memory_buffer<Char> buf; + detail::vformat_to(buf, ts, detail::to_string_view(format_str), args); + return fmt::to_string(buf); +} + +/** + \rst + Formats arguments and returns the result as a string using ANSI + escape sequences to specify text formatting. + + **Example**:: + + #include <fmt/color.h> + std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red), + "The answer is {}", 42); + \endrst +*/ +template <typename S, typename... Args, typename Char = char_t<S>> +inline std::basic_string<Char> format(const text_style& ts, const S& format_str, + const Args&... args) { + return fmt::vformat(ts, detail::to_string_view(format_str), + fmt::make_format_args<buffer_context<Char>>(args...)); +} + +/** + Formats a string with the given text_style and writes the output to ``out``. + */ +template <typename OutputIt, typename Char, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)> +OutputIt vformat_to( + OutputIt out, const text_style& ts, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + auto&& buf = detail::get_buffer<Char>(out); + detail::vformat_to(buf, ts, format_str, args); + return detail::get_iterator(buf); +} + +/** + \rst + Formats arguments with the given text_style, writes the result to the output + iterator ``out`` and returns the iterator past the end of the output range. + + **Example**:: + + std::vector<char> out; + fmt::format_to(std::back_inserter(out), + fmt::emphasis::bold | fg(fmt::color::red), "{}", 42); + \endrst +*/ +template <typename OutputIt, typename S, typename... Args, + bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value&& + detail::is_string<S>::value> +inline auto format_to(OutputIt out, const text_style& ts, const S& format_str, + Args&&... args) -> + typename std::enable_if<enable, OutputIt>::type { + return vformat_to(out, ts, detail::to_string_view(format_str), + fmt::make_format_args<buffer_context<char_t<S>>>(args...)); +} + +template <typename T, typename Char> +struct formatter<detail::styled_arg<T>, Char> : formatter<T, Char> { + template <typename FormatContext> + auto format(const detail::styled_arg<T>& arg, FormatContext& ctx) const + -> decltype(ctx.out()) { + const auto& ts = arg.style; + const auto& value = arg.value; + auto out = ctx.out(); + + bool has_style = false; + if (ts.has_emphasis()) { + has_style = true; + auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis()); + out = std::copy(emphasis.begin(), emphasis.end(), out); + } + if (ts.has_foreground()) { + has_style = true; + auto foreground = + detail::make_foreground_color<Char>(ts.get_foreground()); + out = std::copy(foreground.begin(), foreground.end(), out); + } + if (ts.has_background()) { + has_style = true; + auto background = + detail::make_background_color<Char>(ts.get_background()); + out = std::copy(background.begin(), background.end(), out); + } + out = formatter<T, Char>::format(value, ctx); + if (has_style) { + auto reset_color = string_view("\x1b[0m"); + out = std::copy(reset_color.begin(), reset_color.end(), out); + } + return out; + } +}; + +/** + \rst + Returns an argument that will be formatted using ANSI escape sequences, + to be used in a formatting function. + + **Example**:: + + fmt::print("Elapsed time: {s:.2f} seconds", + fmt::styled(1.23, fmt::fg(fmt::color::green) | + fmt::bg(fmt::color::blue))); + \endrst + */ +template <typename T> +FMT_CONSTEXPR auto styled(const T& value, text_style ts) + -> detail::styled_arg<remove_cvref_t<T>> { + return detail::styled_arg<remove_cvref_t<T>>{value, ts}; +} + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_COLOR_H_ diff --git a/src/fmtlib/fmt/compile.h b/src/fmtlib/fmt/compile.h new file mode 100644 index 0000000..c09dd6f --- /dev/null +++ b/src/fmtlib/fmt/compile.h @@ -0,0 +1,603 @@ +// Formatting library for C++ - experimental format string compilation +// +// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_COMPILE_H_ +#define FMT_COMPILE_H_ + +#include "format.h" + +FMT_BEGIN_NAMESPACE +namespace detail { + +template <typename Char, typename InputIt> +inline counting_iterator copy_str(InputIt begin, InputIt end, + counting_iterator it) { + return it + (end - begin); +} + +template <typename OutputIt> class truncating_iterator_base { + protected: + OutputIt out_; + size_t limit_; + size_t count_ = 0; + + truncating_iterator_base() : out_(), limit_(0) {} + + truncating_iterator_base(OutputIt out, size_t limit) + : out_(out), limit_(limit) {} + + public: + using iterator_category = std::output_iterator_tag; + using value_type = typename std::iterator_traits<OutputIt>::value_type; + using difference_type = std::ptrdiff_t; + using pointer = void; + using reference = void; + FMT_UNCHECKED_ITERATOR(truncating_iterator_base); + + OutputIt base() const { return out_; } + size_t count() const { return count_; } +}; + +// An output iterator that truncates the output and counts the number of objects +// written to it. +template <typename OutputIt, + typename Enable = typename std::is_void< + typename std::iterator_traits<OutputIt>::value_type>::type> +class truncating_iterator; + +template <typename OutputIt> +class truncating_iterator<OutputIt, std::false_type> + : public truncating_iterator_base<OutputIt> { + mutable typename truncating_iterator_base<OutputIt>::value_type blackhole_; + + public: + using value_type = typename truncating_iterator_base<OutputIt>::value_type; + + truncating_iterator() = default; + + truncating_iterator(OutputIt out, size_t limit) + : truncating_iterator_base<OutputIt>(out, limit) {} + + truncating_iterator& operator++() { + if (this->count_++ < this->limit_) ++this->out_; + return *this; + } + + truncating_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + value_type& operator*() const { + return this->count_ < this->limit_ ? *this->out_ : blackhole_; + } +}; + +template <typename OutputIt> +class truncating_iterator<OutputIt, std::true_type> + : public truncating_iterator_base<OutputIt> { + public: + truncating_iterator() = default; + + truncating_iterator(OutputIt out, size_t limit) + : truncating_iterator_base<OutputIt>(out, limit) {} + + template <typename T> truncating_iterator& operator=(T val) { + if (this->count_++ < this->limit_) *this->out_++ = val; + return *this; + } + + truncating_iterator& operator++() { return *this; } + truncating_iterator& operator++(int) { return *this; } + truncating_iterator& operator*() { return *this; } +}; + +// A compile-time string which is compiled into fast formatting code. +class compiled_string {}; + +template <typename S> +struct is_compiled_string : std::is_base_of<compiled_string, S> {}; + +/** + \rst + Converts a string literal *s* into a format string that will be parsed at + compile time and converted into efficient formatting code. Requires C++17 + ``constexpr if`` compiler support. + + **Example**:: + + // Converts 42 into std::string using the most efficient method and no + // runtime format string processing. + std::string s = fmt::format(FMT_COMPILE("{}"), 42); + \endrst + */ +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) +# define FMT_COMPILE(s) \ + FMT_STRING_IMPL(s, fmt::detail::compiled_string, explicit) +#else +# define FMT_COMPILE(s) FMT_STRING(s) +#endif + +#if FMT_USE_NONTYPE_TEMPLATE_ARGS +template <typename Char, size_t N, + fmt::detail_exported::fixed_string<Char, N> Str> +struct udl_compiled_string : compiled_string { + using char_type = Char; + explicit constexpr operator basic_string_view<char_type>() const { + return {Str.data, N - 1}; + } +}; +#endif + +template <typename T, typename... Tail> +const T& first(const T& value, const Tail&...) { + return value; +} + +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) +template <typename... Args> struct type_list {}; + +// Returns a reference to the argument at index N from [first, rest...]. +template <int N, typename T, typename... Args> +constexpr const auto& get([[maybe_unused]] const T& first, + [[maybe_unused]] const Args&... rest) { + static_assert(N < 1 + sizeof...(Args), "index is out of bounds"); + if constexpr (N == 0) + return first; + else + return detail::get<N - 1>(rest...); +} + +template <typename Char, typename... Args> +constexpr int get_arg_index_by_name(basic_string_view<Char> name, + type_list<Args...>) { + return get_arg_index_by_name<Args...>(name); +} + +template <int N, typename> struct get_type_impl; + +template <int N, typename... Args> struct get_type_impl<N, type_list<Args...>> { + using type = + remove_cvref_t<decltype(detail::get<N>(std::declval<Args>()...))>; +}; + +template <int N, typename T> +using get_type = typename get_type_impl<N, T>::type; + +template <typename T> struct is_compiled_format : std::false_type {}; + +template <typename Char> struct text { + basic_string_view<Char> data; + using char_type = Char; + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&...) const { + return write<Char>(out, data); + } +}; + +template <typename Char> +struct is_compiled_format<text<Char>> : std::true_type {}; + +template <typename Char> +constexpr text<Char> make_text(basic_string_view<Char> s, size_t pos, + size_t size) { + return {{&s[pos], size}}; +} + +template <typename Char> struct code_unit { + Char value; + using char_type = Char; + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&...) const { + return write<Char>(out, value); + } +}; + +// This ensures that the argument type is convertible to `const T&`. +template <typename T, int N, typename... Args> +constexpr const T& get_arg_checked(const Args&... args) { + const auto& arg = detail::get<N>(args...); + if constexpr (detail::is_named_arg<remove_cvref_t<decltype(arg)>>()) { + return arg.value; + } else { + return arg; + } +} + +template <typename Char> +struct is_compiled_format<code_unit<Char>> : std::true_type {}; + +// A replacement field that refers to argument N. +template <typename Char, typename T, int N> struct field { + using char_type = Char; + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&... args) const { + return write<Char>(out, get_arg_checked<T, N>(args...)); + } +}; + +template <typename Char, typename T, int N> +struct is_compiled_format<field<Char, T, N>> : std::true_type {}; + +// A replacement field that refers to argument with name. +template <typename Char> struct runtime_named_field { + using char_type = Char; + basic_string_view<Char> name; + + template <typename OutputIt, typename T> + constexpr static bool try_format_argument( + OutputIt& out, + // [[maybe_unused]] due to unused-but-set-parameter warning in GCC 7,8,9 + [[maybe_unused]] basic_string_view<Char> arg_name, const T& arg) { + if constexpr (is_named_arg<typename std::remove_cv<T>::type>::value) { + if (arg_name == arg.name) { + out = write<Char>(out, arg.value); + return true; + } + } + return false; + } + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&... args) const { + bool found = (try_format_argument(out, name, args) || ...); + if (!found) { + FMT_THROW(format_error("argument with specified name is not found")); + } + return out; + } +}; + +template <typename Char> +struct is_compiled_format<runtime_named_field<Char>> : std::true_type {}; + +// A replacement field that refers to argument N and has format specifiers. +template <typename Char, typename T, int N> struct spec_field { + using char_type = Char; + formatter<T, Char> fmt; + + template <typename OutputIt, typename... Args> + constexpr FMT_INLINE OutputIt format(OutputIt out, + const Args&... args) const { + const auto& vargs = + fmt::make_format_args<basic_format_context<OutputIt, Char>>(args...); + basic_format_context<OutputIt, Char> ctx(out, vargs); + return fmt.format(get_arg_checked<T, N>(args...), ctx); + } +}; + +template <typename Char, typename T, int N> +struct is_compiled_format<spec_field<Char, T, N>> : std::true_type {}; + +template <typename L, typename R> struct concat { + L lhs; + R rhs; + using char_type = typename L::char_type; + + template <typename OutputIt, typename... Args> + constexpr OutputIt format(OutputIt out, const Args&... args) const { + out = lhs.format(out, args...); + return rhs.format(out, args...); + } +}; + +template <typename L, typename R> +struct is_compiled_format<concat<L, R>> : std::true_type {}; + +template <typename L, typename R> +constexpr concat<L, R> make_concat(L lhs, R rhs) { + return {lhs, rhs}; +} + +struct unknown_format {}; + +template <typename Char> +constexpr size_t parse_text(basic_string_view<Char> str, size_t pos) { + for (size_t size = str.size(); pos != size; ++pos) { + if (str[pos] == '{' || str[pos] == '}') break; + } + return pos; +} + +template <typename Args, size_t POS, int ID, typename S> +constexpr auto compile_format_string(S format_str); + +template <typename Args, size_t POS, int ID, typename T, typename S> +constexpr auto parse_tail(T head, S format_str) { + if constexpr (POS != + basic_string_view<typename S::char_type>(format_str).size()) { + constexpr auto tail = compile_format_string<Args, POS, ID>(format_str); + if constexpr (std::is_same<remove_cvref_t<decltype(tail)>, + unknown_format>()) + return tail; + else + return make_concat(head, tail); + } else { + return head; + } +} + +template <typename T, typename Char> struct parse_specs_result { + formatter<T, Char> fmt; + size_t end; + int next_arg_id; +}; + +constexpr int manual_indexing_id = -1; + +template <typename T, typename Char> +constexpr parse_specs_result<T, Char> parse_specs(basic_string_view<Char> str, + size_t pos, int next_arg_id) { + str.remove_prefix(pos); + auto ctx = compile_parse_context<Char>(str, max_value<int>(), nullptr, {}, + next_arg_id); + auto f = formatter<T, Char>(); + auto end = f.parse(ctx); + return {f, pos + fmt::detail::to_unsigned(end - str.data()) + 1, + next_arg_id == 0 ? manual_indexing_id : ctx.next_arg_id()}; +} + +template <typename Char> struct arg_id_handler { + arg_ref<Char> arg_id; + + constexpr int operator()() { + FMT_ASSERT(false, "handler cannot be used with automatic indexing"); + return 0; + } + constexpr int operator()(int id) { + arg_id = arg_ref<Char>(id); + return 0; + } + constexpr int operator()(basic_string_view<Char> id) { + arg_id = arg_ref<Char>(id); + return 0; + } + + constexpr void on_error(const char* message) { + FMT_THROW(format_error(message)); + } +}; + +template <typename Char> struct parse_arg_id_result { + arg_ref<Char> arg_id; + const Char* arg_id_end; +}; + +template <int ID, typename Char> +constexpr auto parse_arg_id(const Char* begin, const Char* end) { + auto handler = arg_id_handler<Char>{arg_ref<Char>{}}; + auto arg_id_end = parse_arg_id(begin, end, handler); + return parse_arg_id_result<Char>{handler.arg_id, arg_id_end}; +} + +template <typename T, typename Enable = void> struct field_type { + using type = remove_cvref_t<T>; +}; + +template <typename T> +struct field_type<T, enable_if_t<detail::is_named_arg<T>::value>> { + using type = remove_cvref_t<decltype(T::value)>; +}; + +template <typename T, typename Args, size_t END_POS, int ARG_INDEX, int NEXT_ID, + typename S> +constexpr auto parse_replacement_field_then_tail(S format_str) { + using char_type = typename S::char_type; + constexpr auto str = basic_string_view<char_type>(format_str); + constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type(); + if constexpr (c == '}') { + return parse_tail<Args, END_POS + 1, NEXT_ID>( + field<char_type, typename field_type<T>::type, ARG_INDEX>(), + format_str); + } else if constexpr (c == ':') { + constexpr auto result = parse_specs<typename field_type<T>::type>( + str, END_POS + 1, NEXT_ID == manual_indexing_id ? 0 : NEXT_ID); + return parse_tail<Args, result.end, result.next_arg_id>( + spec_field<char_type, typename field_type<T>::type, ARG_INDEX>{ + result.fmt}, + format_str); + } +} + +// Compiles a non-empty format string and returns the compiled representation +// or unknown_format() on unrecognized input. +template <typename Args, size_t POS, int ID, typename S> +constexpr auto compile_format_string(S format_str) { + using char_type = typename S::char_type; + constexpr auto str = basic_string_view<char_type>(format_str); + if constexpr (str[POS] == '{') { + if constexpr (POS + 1 == str.size()) + FMT_THROW(format_error("unmatched '{' in format string")); + if constexpr (str[POS + 1] == '{') { + return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str); + } else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') { + static_assert(ID != manual_indexing_id, + "cannot switch from manual to automatic argument indexing"); + constexpr auto next_id = + ID != manual_indexing_id ? ID + 1 : manual_indexing_id; + return parse_replacement_field_then_tail<get_type<ID, Args>, Args, + POS + 1, ID, next_id>( + format_str); + } else { + constexpr auto arg_id_result = + parse_arg_id<ID>(str.data() + POS + 1, str.data() + str.size()); + constexpr auto arg_id_end_pos = arg_id_result.arg_id_end - str.data(); + constexpr char_type c = + arg_id_end_pos != str.size() ? str[arg_id_end_pos] : char_type(); + static_assert(c == '}' || c == ':', "missing '}' in format string"); + if constexpr (arg_id_result.arg_id.kind == arg_id_kind::index) { + static_assert( + ID == manual_indexing_id || ID == 0, + "cannot switch from automatic to manual argument indexing"); + constexpr auto arg_index = arg_id_result.arg_id.val.index; + return parse_replacement_field_then_tail<get_type<arg_index, Args>, + Args, arg_id_end_pos, + arg_index, manual_indexing_id>( + format_str); + } else if constexpr (arg_id_result.arg_id.kind == arg_id_kind::name) { + constexpr auto arg_index = + get_arg_index_by_name(arg_id_result.arg_id.val.name, Args{}); + if constexpr (arg_index != invalid_arg_index) { + constexpr auto next_id = + ID != manual_indexing_id ? ID + 1 : manual_indexing_id; + return parse_replacement_field_then_tail< + decltype(get_type<arg_index, Args>::value), Args, arg_id_end_pos, + arg_index, next_id>(format_str); + } else { + if constexpr (c == '}') { + return parse_tail<Args, arg_id_end_pos + 1, ID>( + runtime_named_field<char_type>{arg_id_result.arg_id.val.name}, + format_str); + } else if constexpr (c == ':') { + return unknown_format(); // no type info for specs parsing + } + } + } + } + } else if constexpr (str[POS] == '}') { + if constexpr (POS + 1 == str.size()) + FMT_THROW(format_error("unmatched '}' in format string")); + return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str); + } else { + constexpr auto end = parse_text(str, POS + 1); + if constexpr (end - POS > 1) { + return parse_tail<Args, end, ID>(make_text(str, POS, end - POS), + format_str); + } else { + return parse_tail<Args, end, ID>(code_unit<char_type>{str[POS]}, + format_str); + } + } +} + +template <typename... Args, typename S, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +constexpr auto compile(S format_str) { + constexpr auto str = basic_string_view<typename S::char_type>(format_str); + if constexpr (str.size() == 0) { + return detail::make_text(str, 0, 0); + } else { + constexpr auto result = + detail::compile_format_string<detail::type_list<Args...>, 0, 0>( + format_str); + return result; + } +} +#endif // defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) +} // namespace detail + +FMT_MODULE_EXPORT_BEGIN + +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) + +template <typename CompiledFormat, typename... Args, + typename Char = typename CompiledFormat::char_type, + FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)> +FMT_INLINE std::basic_string<Char> format(const CompiledFormat& cf, + const Args&... args) { + auto s = std::basic_string<Char>(); + cf.format(std::back_inserter(s), args...); + return s; +} + +template <typename OutputIt, typename CompiledFormat, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)> +constexpr FMT_INLINE OutputIt format_to(OutputIt out, const CompiledFormat& cf, + const Args&... args) { + return cf.format(out, args...); +} + +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +FMT_INLINE std::basic_string<typename S::char_type> format(const S&, + Args&&... args) { + if constexpr (std::is_same<typename S::char_type, char>::value) { + constexpr auto str = basic_string_view<typename S::char_type>(S()); + if constexpr (str.size() == 2 && str[0] == '{' && str[1] == '}') { + const auto& first = detail::first(args...); + if constexpr (detail::is_named_arg< + remove_cvref_t<decltype(first)>>::value) { + return fmt::to_string(first.value); + } else { + return fmt::to_string(first); + } + } + } + constexpr auto compiled = detail::compile<Args...>(S()); + if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>, + detail::unknown_format>()) { + return fmt::format( + static_cast<basic_string_view<typename S::char_type>>(S()), + std::forward<Args>(args)...); + } else { + return fmt::format(compiled, std::forward<Args>(args)...); + } +} + +template <typename OutputIt, typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) { + constexpr auto compiled = detail::compile<Args...>(S()); + if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>, + detail::unknown_format>()) { + return fmt::format_to( + out, static_cast<basic_string_view<typename S::char_type>>(S()), + std::forward<Args>(args)...); + } else { + return fmt::format_to(out, compiled, std::forward<Args>(args)...); + } +} +#endif + +template <typename OutputIt, typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +format_to_n_result<OutputIt> format_to_n(OutputIt out, size_t n, + const S& format_str, Args&&... args) { + auto it = fmt::format_to(detail::truncating_iterator<OutputIt>(out, n), + format_str, std::forward<Args>(args)...); + return {it.base(), it.count()}; +} + +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +size_t formatted_size(const S& format_str, const Args&... args) { + return fmt::format_to(detail::counting_iterator(), format_str, args...) + .count(); +} + +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +void print(std::FILE* f, const S& format_str, const Args&... args) { + memory_buffer buffer; + fmt::format_to(std::back_inserter(buffer), format_str, args...); + detail::print(f, {buffer.data(), buffer.size()}); +} + +template <typename S, typename... Args, + FMT_ENABLE_IF(detail::is_compiled_string<S>::value)> +void print(const S& format_str, const Args&... args) { + print(stdout, format_str, args...); +} + +#if FMT_USE_NONTYPE_TEMPLATE_ARGS +inline namespace literals { +template <detail_exported::fixed_string Str> constexpr auto operator""_cf() { + using char_t = remove_cvref_t<decltype(Str.data[0])>; + return detail::udl_compiled_string<char_t, sizeof(Str.data) / sizeof(char_t), + Str>(); +} +} // namespace literals +#endif + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_COMPILE_H_ diff --git a/src/fmtlib/fmt/core.h b/src/fmtlib/fmt/core.h new file mode 100644 index 0000000..0e7843b --- /dev/null +++ b/src/fmtlib/fmt/core.h @@ -0,0 +1,3280 @@ +// Formatting library for C++ - the core API for char/UTF-8 +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_CORE_H_ +#define FMT_CORE_H_ + +#include <cstddef> // std::byte +#include <cstdio> // std::FILE +#include <cstring> // std::strlen +#include <iterator> +#include <limits> +#include <string> +#include <type_traits> + +// The fmt library version in the form major * 10000 + minor * 100 + patch. +#define FMT_VERSION 90000 + +#if defined(__clang__) && !defined(__ibmxl__) +# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__) +#else +# define FMT_CLANG_VERSION 0 +#endif + +#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) && \ + !defined(__NVCOMPILER) +# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) +#else +# define FMT_GCC_VERSION 0 +#endif + +#ifndef FMT_GCC_PRAGMA +// Workaround _Pragma bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59884. +# if FMT_GCC_VERSION >= 504 +# define FMT_GCC_PRAGMA(arg) _Pragma(arg) +# else +# define FMT_GCC_PRAGMA(arg) +# endif +#endif + +#ifdef __ICL +# define FMT_ICC_VERSION __ICL +#elif defined(__INTEL_COMPILER) +# define FMT_ICC_VERSION __INTEL_COMPILER +#else +# define FMT_ICC_VERSION 0 +#endif + +#ifdef _MSC_VER +# define FMT_MSC_VERSION _MSC_VER +# define FMT_MSC_WARNING(...) __pragma(warning(__VA_ARGS__)) +#else +# define FMT_MSC_VERSION 0 +# define FMT_MSC_WARNING(...) +#endif + +#ifdef _MSVC_LANG +# define FMT_CPLUSPLUS _MSVC_LANG +#else +# define FMT_CPLUSPLUS __cplusplus +#endif + +#ifdef __has_feature +# define FMT_HAS_FEATURE(x) __has_feature(x) +#else +# define FMT_HAS_FEATURE(x) 0 +#endif + +#if (defined(__has_include) || FMT_ICC_VERSION >= 1600 || \ + FMT_MSC_VERSION > 1900) && \ + !defined(__INTELLISENSE__) +# define FMT_HAS_INCLUDE(x) __has_include(x) +#else +# define FMT_HAS_INCLUDE(x) 0 +#endif + +#ifdef __has_cpp_attribute +# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) +#else +# define FMT_HAS_CPP_ATTRIBUTE(x) 0 +#endif + +#define FMT_HAS_CPP14_ATTRIBUTE(attribute) \ + (FMT_CPLUSPLUS >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + +#define FMT_HAS_CPP17_ATTRIBUTE(attribute) \ + (FMT_CPLUSPLUS >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + +// Check if relaxed C++14 constexpr is supported. +// GCC doesn't allow throw in constexpr until version 6 (bug 67371). +#ifndef FMT_USE_CONSTEXPR +# if (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VERSION >= 1912 || \ + (FMT_GCC_VERSION >= 600 && FMT_CPLUSPLUS >= 201402L)) && \ + !FMT_ICC_VERSION && !defined(__NVCC__) +# define FMT_USE_CONSTEXPR 1 +# else +# define FMT_USE_CONSTEXPR 0 +# endif +#endif +#if FMT_USE_CONSTEXPR +# define FMT_CONSTEXPR constexpr +#else +# define FMT_CONSTEXPR +#endif + +#if ((FMT_CPLUSPLUS >= 202002L) && \ + (!defined(_GLIBCXX_RELEASE) || _GLIBCXX_RELEASE > 9)) || \ + (FMT_CPLUSPLUS >= 201709L && FMT_GCC_VERSION >= 1002) +# define FMT_CONSTEXPR20 constexpr +#else +# define FMT_CONSTEXPR20 +#endif + +// Check if constexpr std::char_traits<>::{compare,length} are supported. +#if defined(__GLIBCXX__) +# if FMT_CPLUSPLUS >= 201703L && defined(_GLIBCXX_RELEASE) && \ + _GLIBCXX_RELEASE >= 7 // GCC 7+ libstdc++ has _GLIBCXX_RELEASE. +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr +# endif +#elif defined(_LIBCPP_VERSION) && FMT_CPLUSPLUS >= 201703L && \ + _LIBCPP_VERSION >= 4000 +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr +#elif FMT_MSC_VERSION >= 1914 && FMT_CPLUSPLUS >= 201703L +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr +#endif +#ifndef FMT_CONSTEXPR_CHAR_TRAITS +# define FMT_CONSTEXPR_CHAR_TRAITS +#endif + +// Check if exceptions are disabled. +#ifndef FMT_EXCEPTIONS +# if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \ + (FMT_MSC_VERSION && !_HAS_EXCEPTIONS) +# define FMT_EXCEPTIONS 0 +# else +# define FMT_EXCEPTIONS 1 +# endif +#endif + +#ifndef FMT_DEPRECATED +# if FMT_HAS_CPP14_ATTRIBUTE(deprecated) || FMT_MSC_VERSION >= 1900 +# define FMT_DEPRECATED [[deprecated]] +# else +# if (defined(__GNUC__) && !defined(__LCC__)) || defined(__clang__) +# define FMT_DEPRECATED __attribute__((deprecated)) +# elif FMT_MSC_VERSION +# define FMT_DEPRECATED __declspec(deprecated) +# else +# define FMT_DEPRECATED /* deprecated */ +# endif +# endif +#endif + +// [[noreturn]] is disabled on MSVC and NVCC because of bogus unreachable code +// warnings. +#if FMT_EXCEPTIONS && FMT_HAS_CPP_ATTRIBUTE(noreturn) && !FMT_MSC_VERSION && \ + !defined(__NVCC__) +# define FMT_NORETURN [[noreturn]] +#else +# define FMT_NORETURN +#endif + +#if FMT_HAS_CPP17_ATTRIBUTE(fallthrough) +# define FMT_FALLTHROUGH [[fallthrough]] +#elif defined(__clang__) +# define FMT_FALLTHROUGH [[clang::fallthrough]] +#elif FMT_GCC_VERSION >= 700 && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520) +# define FMT_FALLTHROUGH [[gnu::fallthrough]] +#else +# define FMT_FALLTHROUGH +#endif + +#ifndef FMT_NODISCARD +# if FMT_HAS_CPP17_ATTRIBUTE(nodiscard) +# define FMT_NODISCARD [[nodiscard]] +# else +# define FMT_NODISCARD +# endif +#endif + +#ifndef FMT_USE_FLOAT +# define FMT_USE_FLOAT 1 +#endif +#ifndef FMT_USE_DOUBLE +# define FMT_USE_DOUBLE 1 +#endif +#ifndef FMT_USE_LONG_DOUBLE +# define FMT_USE_LONG_DOUBLE 1 +#endif + +#ifndef FMT_INLINE +# if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_INLINE inline __attribute__((always_inline)) +# else +# define FMT_INLINE inline +# endif +#endif + +#ifdef _MSC_VER +# define FMT_UNCHECKED_ITERATOR(It) \ + using _Unchecked_type = It // Mark iterator as checked. +#else +# define FMT_UNCHECKED_ITERATOR(It) using unchecked_type = It +#endif + +#ifndef FMT_BEGIN_NAMESPACE +# define FMT_BEGIN_NAMESPACE \ + namespace fmt { \ + inline namespace v9 { +# define FMT_END_NAMESPACE \ + } \ + } +#endif + +#ifndef FMT_MODULE_EXPORT +# define FMT_MODULE_EXPORT +# define FMT_MODULE_EXPORT_BEGIN +# define FMT_MODULE_EXPORT_END +# define FMT_BEGIN_DETAIL_NAMESPACE namespace detail { +# define FMT_END_DETAIL_NAMESPACE } +#endif + +#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) +# define FMT_CLASS_API FMT_MSC_WARNING(suppress : 4275) +# ifdef FMT_EXPORT +# define FMT_API __declspec(dllexport) +# elif defined(FMT_SHARED) +# define FMT_API __declspec(dllimport) +# endif +#else +# define FMT_CLASS_API +# if defined(FMT_EXPORT) || defined(FMT_SHARED) +# if defined(__GNUC__) || defined(__clang__) +# define FMT_API __attribute__((visibility("default"))) +# endif +# endif +#endif +#ifndef FMT_API +# define FMT_API +#endif + +// libc++ supports string_view in pre-c++17. +#if FMT_HAS_INCLUDE(<string_view>) && \ + (FMT_CPLUSPLUS >= 201703L || defined(_LIBCPP_VERSION)) +# include <string_view> +# define FMT_USE_STRING_VIEW +#elif FMT_HAS_INCLUDE("experimental/string_view") && FMT_CPLUSPLUS >= 201402L +# include <experimental/string_view> +# define FMT_USE_EXPERIMENTAL_STRING_VIEW +#endif + +#ifndef FMT_UNICODE +# define FMT_UNICODE !FMT_MSC_VERSION +#endif + +#ifndef FMT_CONSTEVAL +# if ((FMT_GCC_VERSION >= 1000 || FMT_CLANG_VERSION >= 1101) && \ + FMT_CPLUSPLUS >= 202002L && !defined(__apple_build_version__)) || \ + (defined(__cpp_consteval) && \ + (!FMT_MSC_VERSION || _MSC_FULL_VER >= 193030704)) +// consteval is broken in MSVC before VS2022 and Apple clang 13. +# define FMT_CONSTEVAL consteval +# define FMT_HAS_CONSTEVAL +# else +# define FMT_CONSTEVAL +# endif +#endif + +#ifndef FMT_USE_NONTYPE_TEMPLATE_ARGS +# if defined(__cpp_nontype_template_args) && \ + ((FMT_GCC_VERSION >= 903 && FMT_CPLUSPLUS >= 201709L) || \ + __cpp_nontype_template_args >= 201911L) +# define FMT_USE_NONTYPE_TEMPLATE_ARGS 1 +# else +# define FMT_USE_NONTYPE_TEMPLATE_ARGS 0 +# endif +#endif + +// Enable minimal optimizations for more compact code in debug mode. +FMT_GCC_PRAGMA("GCC push_options") +#if !defined(__OPTIMIZE__) && !defined(__NVCOMPILER) +FMT_GCC_PRAGMA("GCC optimize(\"Og\")") +#endif + +FMT_BEGIN_NAMESPACE +FMT_MODULE_EXPORT_BEGIN + +// Implementations of enable_if_t and other metafunctions for older systems. +template <bool B, typename T = void> +using enable_if_t = typename std::enable_if<B, T>::type; +template <bool B, typename T, typename F> +using conditional_t = typename std::conditional<B, T, F>::type; +template <bool B> using bool_constant = std::integral_constant<bool, B>; +template <typename T> +using remove_reference_t = typename std::remove_reference<T>::type; +template <typename T> +using remove_const_t = typename std::remove_const<T>::type; +template <typename T> +using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type; +template <typename T> struct type_identity { using type = T; }; +template <typename T> using type_identity_t = typename type_identity<T>::type; +template <typename T> +using underlying_t = typename std::underlying_type<T>::type; + +template <typename...> struct disjunction : std::false_type {}; +template <typename P> struct disjunction<P> : P {}; +template <typename P1, typename... Pn> +struct disjunction<P1, Pn...> + : conditional_t<bool(P1::value), P1, disjunction<Pn...>> {}; + +template <typename...> struct conjunction : std::true_type {}; +template <typename P> struct conjunction<P> : P {}; +template <typename P1, typename... Pn> +struct conjunction<P1, Pn...> + : conditional_t<bool(P1::value), conjunction<Pn...>, P1> {}; + +struct monostate { + constexpr monostate() {} +}; + +// An enable_if helper to be used in template parameters which results in much +// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed +// to workaround a bug in MSVC 2019 (see #1140 and #1186). +#ifdef FMT_DOC +# define FMT_ENABLE_IF(...) +#else +# define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0 +#endif + +FMT_BEGIN_DETAIL_NAMESPACE + +// Suppresses "unused variable" warnings with the method described in +// https://herbsutter.com/2009/10/18/mailbag-shutting-up-compiler-warnings/. +// (void)var does not work on many Intel compilers. +template <typename... T> FMT_CONSTEXPR void ignore_unused(const T&...) {} + +constexpr FMT_INLINE auto is_constant_evaluated( + bool default_value = false) noexcept -> bool { +#ifdef __cpp_lib_is_constant_evaluated + ignore_unused(default_value); + return std::is_constant_evaluated(); +#else + return default_value; +#endif +} + +// Suppresses "conditional expression is constant" warnings. +template <typename T> constexpr FMT_INLINE auto const_check(T value) -> T { + return value; +} + +FMT_NORETURN FMT_API void assert_fail(const char* file, int line, + const char* message); + +#ifndef FMT_ASSERT +# ifdef NDEBUG +// FMT_ASSERT is not empty to avoid -Wempty-body. +# define FMT_ASSERT(condition, message) \ + ::fmt::detail::ignore_unused((condition), (message)) +# else +# define FMT_ASSERT(condition, message) \ + ((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \ + ? (void)0 \ + : ::fmt::detail::assert_fail(__FILE__, __LINE__, (message))) +# endif +#endif + +#if defined(FMT_USE_STRING_VIEW) +template <typename Char> using std_string_view = std::basic_string_view<Char>; +#elif defined(FMT_USE_EXPERIMENTAL_STRING_VIEW) +template <typename Char> +using std_string_view = std::experimental::basic_string_view<Char>; +#else +template <typename T> struct std_string_view {}; +#endif + +#ifdef FMT_USE_INT128 +// Do nothing. +#elif defined(__SIZEOF_INT128__) && !defined(__NVCC__) && \ + !(FMT_CLANG_VERSION && FMT_MSC_VERSION) +# define FMT_USE_INT128 1 +using int128_opt = __int128_t; // An optional native 128-bit integer. +using uint128_opt = __uint128_t; +template <typename T> inline auto convert_for_visit(T value) -> T { + return value; +} +#else +# define FMT_USE_INT128 0 +#endif +#if !FMT_USE_INT128 +enum class int128_opt {}; +enum class uint128_opt {}; +// Reduce template instantiations. +template <typename T> auto convert_for_visit(T) -> monostate { return {}; } +#endif + +// Casts a nonnegative integer to unsigned. +template <typename Int> +FMT_CONSTEXPR auto to_unsigned(Int value) -> + typename std::make_unsigned<Int>::type { + FMT_ASSERT(value >= 0, "negative value"); + return static_cast<typename std::make_unsigned<Int>::type>(value); +} + +FMT_MSC_WARNING(suppress : 4566) constexpr unsigned char micro[] = "\u00B5"; + +constexpr auto is_utf8() -> bool { + // Avoid buggy sign extensions in MSVC's constant evaluation mode (#2297). + using uchar = unsigned char; + return FMT_UNICODE || (sizeof(micro) == 3 && uchar(micro[0]) == 0xC2 && + uchar(micro[1]) == 0xB5); +} +FMT_END_DETAIL_NAMESPACE + +/** + An implementation of ``std::basic_string_view`` for pre-C++17. It provides a + subset of the API. ``fmt::basic_string_view`` is used for format strings even + if ``std::string_view`` is available to prevent issues when a library is + compiled with a different ``-std`` option than the client code (which is not + recommended). + */ +template <typename Char> class basic_string_view { + private: + const Char* data_; + size_t size_; + + public: + using value_type = Char; + using iterator = const Char*; + + constexpr basic_string_view() noexcept : data_(nullptr), size_(0) {} + + /** Constructs a string reference object from a C string and a size. */ + constexpr basic_string_view(const Char* s, size_t count) noexcept + : data_(s), size_(count) {} + + /** + \rst + Constructs a string reference object from a C string computing + the size with ``std::char_traits<Char>::length``. + \endrst + */ + FMT_CONSTEXPR_CHAR_TRAITS + FMT_INLINE + basic_string_view(const Char* s) + : data_(s), + size_(detail::const_check(std::is_same<Char, char>::value && + !detail::is_constant_evaluated(true)) + ? std::strlen(reinterpret_cast<const char*>(s)) + : std::char_traits<Char>::length(s)) {} + + /** Constructs a string reference from a ``std::basic_string`` object. */ + template <typename Traits, typename Alloc> + FMT_CONSTEXPR basic_string_view( + const std::basic_string<Char, Traits, Alloc>& s) noexcept + : data_(s.data()), size_(s.size()) {} + + template <typename S, FMT_ENABLE_IF(std::is_same< + S, detail::std_string_view<Char>>::value)> + FMT_CONSTEXPR basic_string_view(S s) noexcept + : data_(s.data()), size_(s.size()) {} + + /** Returns a pointer to the string data. */ + constexpr auto data() const noexcept -> const Char* { return data_; } + + /** Returns the string size. */ + constexpr auto size() const noexcept -> size_t { return size_; } + + constexpr auto begin() const noexcept -> iterator { return data_; } + constexpr auto end() const noexcept -> iterator { return data_ + size_; } + + constexpr auto operator[](size_t pos) const noexcept -> const Char& { + return data_[pos]; + } + + FMT_CONSTEXPR void remove_prefix(size_t n) noexcept { + data_ += n; + size_ -= n; + } + + // Lexicographically compare this string reference to other. + FMT_CONSTEXPR_CHAR_TRAITS auto compare(basic_string_view other) const -> int { + size_t str_size = size_ < other.size_ ? size_ : other.size_; + int result = std::char_traits<Char>::compare(data_, other.data_, str_size); + if (result == 0) + result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); + return result; + } + + FMT_CONSTEXPR_CHAR_TRAITS friend auto operator==(basic_string_view lhs, + basic_string_view rhs) + -> bool { + return lhs.compare(rhs) == 0; + } + friend auto operator!=(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) != 0; + } + friend auto operator<(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) < 0; + } + friend auto operator<=(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) <= 0; + } + friend auto operator>(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) > 0; + } + friend auto operator>=(basic_string_view lhs, basic_string_view rhs) -> bool { + return lhs.compare(rhs) >= 0; + } +}; + +using string_view = basic_string_view<char>; + +/** Specifies if ``T`` is a character type. Can be specialized by users. */ +template <typename T> struct is_char : std::false_type {}; +template <> struct is_char<char> : std::true_type {}; + +FMT_BEGIN_DETAIL_NAMESPACE + +// A base class for compile-time strings. +struct compile_string {}; + +template <typename S> +struct is_compile_string : std::is_base_of<compile_string, S> {}; + +// Returns a string view of `s`. +template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)> +FMT_INLINE auto to_string_view(const Char* s) -> basic_string_view<Char> { + return s; +} +template <typename Char, typename Traits, typename Alloc> +inline auto to_string_view(const std::basic_string<Char, Traits, Alloc>& s) + -> basic_string_view<Char> { + return s; +} +template <typename Char> +constexpr auto to_string_view(basic_string_view<Char> s) + -> basic_string_view<Char> { + return s; +} +template <typename Char, + FMT_ENABLE_IF(!std::is_empty<std_string_view<Char>>::value)> +inline auto to_string_view(std_string_view<Char> s) -> basic_string_view<Char> { + return s; +} +template <typename S, FMT_ENABLE_IF(is_compile_string<S>::value)> +constexpr auto to_string_view(const S& s) + -> basic_string_view<typename S::char_type> { + return basic_string_view<typename S::char_type>(s); +} +void to_string_view(...); + +// Specifies whether S is a string type convertible to fmt::basic_string_view. +// It should be a constexpr function but MSVC 2017 fails to compile it in +// enable_if and MSVC 2015 fails to compile it as an alias template. +// ADL invocation of to_string_view is DEPRECATED! +template <typename S> +struct is_string : std::is_class<decltype(to_string_view(std::declval<S>()))> { +}; + +template <typename S, typename = void> struct char_t_impl {}; +template <typename S> struct char_t_impl<S, enable_if_t<is_string<S>::value>> { + using result = decltype(to_string_view(std::declval<S>())); + using type = typename result::value_type; +}; + +enum class type { + none_type, + // Integer types should go first, + int_type, + uint_type, + long_long_type, + ulong_long_type, + int128_type, + uint128_type, + bool_type, + char_type, + last_integer_type = char_type, + // followed by floating-point types. + float_type, + double_type, + long_double_type, + last_numeric_type = long_double_type, + cstring_type, + string_type, + pointer_type, + custom_type +}; + +// Maps core type T to the corresponding type enum constant. +template <typename T, typename Char> +struct type_constant : std::integral_constant<type, type::custom_type> {}; + +#define FMT_TYPE_CONSTANT(Type, constant) \ + template <typename Char> \ + struct type_constant<Type, Char> \ + : std::integral_constant<type, type::constant> {} + +FMT_TYPE_CONSTANT(int, int_type); +FMT_TYPE_CONSTANT(unsigned, uint_type); +FMT_TYPE_CONSTANT(long long, long_long_type); +FMT_TYPE_CONSTANT(unsigned long long, ulong_long_type); +FMT_TYPE_CONSTANT(int128_opt, int128_type); +FMT_TYPE_CONSTANT(uint128_opt, uint128_type); +FMT_TYPE_CONSTANT(bool, bool_type); +FMT_TYPE_CONSTANT(Char, char_type); +FMT_TYPE_CONSTANT(float, float_type); +FMT_TYPE_CONSTANT(double, double_type); +FMT_TYPE_CONSTANT(long double, long_double_type); +FMT_TYPE_CONSTANT(const Char*, cstring_type); +FMT_TYPE_CONSTANT(basic_string_view<Char>, string_type); +FMT_TYPE_CONSTANT(const void*, pointer_type); + +constexpr bool is_integral_type(type t) { + return t > type::none_type && t <= type::last_integer_type; +} + +constexpr bool is_arithmetic_type(type t) { + return t > type::none_type && t <= type::last_numeric_type; +} + +FMT_NORETURN FMT_API void throw_format_error(const char* message); + +struct error_handler { + constexpr error_handler() = default; + constexpr error_handler(const error_handler&) = default; + + // This function is intentionally not constexpr to give a compile-time error. + FMT_NORETURN void on_error(const char* message) { + throw_format_error(message); + } +}; +FMT_END_DETAIL_NAMESPACE + +/** String's character type. */ +template <typename S> using char_t = typename detail::char_t_impl<S>::type; + +/** + \rst + Parsing context consisting of a format string range being parsed and an + argument counter for automatic indexing. + You can use the ``format_parse_context`` type alias for ``char`` instead. + \endrst + */ +template <typename Char, typename ErrorHandler = detail::error_handler> +class basic_format_parse_context : private ErrorHandler { + private: + basic_string_view<Char> format_str_; + int next_arg_id_; + + FMT_CONSTEXPR void do_check_arg_id(int id); + + public: + using char_type = Char; + using iterator = typename basic_string_view<Char>::iterator; + + explicit constexpr basic_format_parse_context( + basic_string_view<Char> format_str, ErrorHandler eh = {}, + int next_arg_id = 0) + : ErrorHandler(eh), format_str_(format_str), next_arg_id_(next_arg_id) {} + + /** + Returns an iterator to the beginning of the format string range being + parsed. + */ + constexpr auto begin() const noexcept -> iterator { + return format_str_.begin(); + } + + /** + Returns an iterator past the end of the format string range being parsed. + */ + constexpr auto end() const noexcept -> iterator { return format_str_.end(); } + + /** Advances the begin iterator to ``it``. */ + FMT_CONSTEXPR void advance_to(iterator it) { + format_str_.remove_prefix(detail::to_unsigned(it - begin())); + } + + /** + Reports an error if using the manual argument indexing; otherwise returns + the next argument index and switches to the automatic indexing. + */ + FMT_CONSTEXPR auto next_arg_id() -> int { + if (next_arg_id_ < 0) { + on_error("cannot switch from manual to automatic argument indexing"); + return 0; + } + int id = next_arg_id_++; + do_check_arg_id(id); + return id; + } + + /** + Reports an error if using the automatic argument indexing; otherwise + switches to the manual indexing. + */ + FMT_CONSTEXPR void check_arg_id(int id) { + if (next_arg_id_ > 0) { + on_error("cannot switch from automatic to manual argument indexing"); + return; + } + next_arg_id_ = -1; + do_check_arg_id(id); + } + + FMT_CONSTEXPR void check_arg_id(basic_string_view<Char>) {} + + FMT_CONSTEXPR void on_error(const char* message) { + ErrorHandler::on_error(message); + } + + constexpr auto error_handler() const -> ErrorHandler { return *this; } +}; + +using format_parse_context = basic_format_parse_context<char>; + +FMT_BEGIN_DETAIL_NAMESPACE +// A parse context with extra data used only in compile-time checks. +template <typename Char, typename ErrorHandler = detail::error_handler> +class compile_parse_context + : public basic_format_parse_context<Char, ErrorHandler> { + private: + int num_args_; + const type* types_; + using base = basic_format_parse_context<Char, ErrorHandler>; + + public: + explicit FMT_CONSTEXPR compile_parse_context( + basic_string_view<Char> format_str, int num_args, const type* types, + ErrorHandler eh = {}, int next_arg_id = 0) + : base(format_str, eh, next_arg_id), num_args_(num_args), types_(types) {} + + constexpr int num_args() const { return num_args_; } + + FMT_CONSTEXPR auto next_arg_id() -> int { + int id = base::next_arg_id(); + if (id >= num_args_) this->on_error("argument not found"); + return id; + } + + FMT_CONSTEXPR void check_arg_id(int id) { + base::check_arg_id(id); + if (id >= num_args_) this->on_error("argument not found"); + } + using base::check_arg_id; +}; +FMT_END_DETAIL_NAMESPACE + +template <typename Char, typename ErrorHandler> +FMT_CONSTEXPR void +basic_format_parse_context<Char, ErrorHandler>::do_check_arg_id(int id) { + // Argument id is only checked at compile-time during parsing because + // formatting has its own validation. + if (detail::is_constant_evaluated() && FMT_GCC_VERSION >= 1200) { + using context = detail::compile_parse_context<Char, ErrorHandler>; + if (id >= static_cast<context*>(this)->num_args()) + on_error("argument not found"); + } +} + +template <typename Context> class basic_format_arg; +template <typename Context> class basic_format_args; +template <typename Context> class dynamic_format_arg_store; + +// A formatter for objects of type T. +template <typename T, typename Char = char, typename Enable = void> +struct formatter { + // A deleted default constructor indicates a disabled formatter. + formatter() = delete; +}; + +// Specifies if T has an enabled formatter specialization. A type can be +// formattable even if it doesn't have a formatter e.g. via a conversion. +template <typename T, typename Context> +using has_formatter = + std::is_constructible<typename Context::template formatter_type<T>>; + +// Checks whether T is a container with contiguous storage. +template <typename T> struct is_contiguous : std::false_type {}; +template <typename Char> +struct is_contiguous<std::basic_string<Char>> : std::true_type {}; + +class appender; + +FMT_BEGIN_DETAIL_NAMESPACE + +template <typename Context, typename T> +constexpr auto has_const_formatter_impl(T*) + -> decltype(typename Context::template formatter_type<T>().format( + std::declval<const T&>(), std::declval<Context&>()), + true) { + return true; +} +template <typename Context> +constexpr auto has_const_formatter_impl(...) -> bool { + return false; +} +template <typename T, typename Context> +constexpr auto has_const_formatter() -> bool { + return has_const_formatter_impl<Context>(static_cast<T*>(nullptr)); +} + +// Extracts a reference to the container from back_insert_iterator. +template <typename Container> +inline auto get_container(std::back_insert_iterator<Container> it) + -> Container& { + using base = std::back_insert_iterator<Container>; + struct accessor : base { + accessor(base b) : base(b) {} + using base::container; + }; + return *accessor(it).container; +} + +template <typename Char, typename InputIt, typename OutputIt> +FMT_CONSTEXPR auto copy_str(InputIt begin, InputIt end, OutputIt out) + -> OutputIt { + while (begin != end) *out++ = static_cast<Char>(*begin++); + return out; +} + +template <typename Char, typename T, typename U, + FMT_ENABLE_IF( + std::is_same<remove_const_t<T>, U>::value&& is_char<U>::value)> +FMT_CONSTEXPR auto copy_str(T* begin, T* end, U* out) -> U* { + if (is_constant_evaluated()) return copy_str<Char, T*, U*>(begin, end, out); + auto size = to_unsigned(end - begin); + memcpy(out, begin, size * sizeof(U)); + return out + size; +} + +/** + \rst + A contiguous memory buffer with an optional growing ability. It is an internal + class and shouldn't be used directly, only via `~fmt::basic_memory_buffer`. + \endrst + */ +template <typename T> class buffer { + private: + T* ptr_; + size_t size_; + size_t capacity_; + + protected: + // Don't initialize ptr_ since it is not accessed to save a few cycles. + FMT_MSC_WARNING(suppress : 26495) + buffer(size_t sz) noexcept : size_(sz), capacity_(sz) {} + + FMT_CONSTEXPR20 buffer(T* p = nullptr, size_t sz = 0, size_t cap = 0) noexcept + : ptr_(p), size_(sz), capacity_(cap) {} + + FMT_CONSTEXPR20 ~buffer() = default; + buffer(buffer&&) = default; + + /** Sets the buffer data and capacity. */ + FMT_CONSTEXPR void set(T* buf_data, size_t buf_capacity) noexcept { + ptr_ = buf_data; + capacity_ = buf_capacity; + } + + /** Increases the buffer capacity to hold at least *capacity* elements. */ + virtual FMT_CONSTEXPR20 void grow(size_t capacity) = 0; + + public: + using value_type = T; + using const_reference = const T&; + + buffer(const buffer&) = delete; + void operator=(const buffer&) = delete; + + auto begin() noexcept -> T* { return ptr_; } + auto end() noexcept -> T* { return ptr_ + size_; } + + auto begin() const noexcept -> const T* { return ptr_; } + auto end() const noexcept -> const T* { return ptr_ + size_; } + + /** Returns the size of this buffer. */ + constexpr auto size() const noexcept -> size_t { return size_; } + + /** Returns the capacity of this buffer. */ + constexpr auto capacity() const noexcept -> size_t { return capacity_; } + + /** Returns a pointer to the buffer data. */ + FMT_CONSTEXPR auto data() noexcept -> T* { return ptr_; } + + /** Returns a pointer to the buffer data. */ + FMT_CONSTEXPR auto data() const noexcept -> const T* { return ptr_; } + + /** Clears this buffer. */ + void clear() { size_ = 0; } + + // Tries resizing the buffer to contain *count* elements. If T is a POD type + // the new elements may not be initialized. + FMT_CONSTEXPR20 void try_resize(size_t count) { + try_reserve(count); + size_ = count <= capacity_ ? count : capacity_; + } + + // Tries increasing the buffer capacity to *new_capacity*. It can increase the + // capacity by a smaller amount than requested but guarantees there is space + // for at least one additional element either by increasing the capacity or by + // flushing the buffer if it is full. + FMT_CONSTEXPR20 void try_reserve(size_t new_capacity) { + if (new_capacity > capacity_) grow(new_capacity); + } + + FMT_CONSTEXPR20 void push_back(const T& value) { + try_reserve(size_ + 1); + ptr_[size_++] = value; + } + + /** Appends data to the end of the buffer. */ + template <typename U> void append(const U* begin, const U* end); + + template <typename I> FMT_CONSTEXPR auto operator[](I index) -> T& { + return ptr_[index]; + } + template <typename I> + FMT_CONSTEXPR auto operator[](I index) const -> const T& { + return ptr_[index]; + } +}; + +struct buffer_traits { + explicit buffer_traits(size_t) {} + auto count() const -> size_t { return 0; } + auto limit(size_t size) -> size_t { return size; } +}; + +class fixed_buffer_traits { + private: + size_t count_ = 0; + size_t limit_; + + public: + explicit fixed_buffer_traits(size_t limit) : limit_(limit) {} + auto count() const -> size_t { return count_; } + auto limit(size_t size) -> size_t { + size_t n = limit_ > count_ ? limit_ - count_ : 0; + count_ += size; + return size < n ? size : n; + } +}; + +// A buffer that writes to an output iterator when flushed. +template <typename OutputIt, typename T, typename Traits = buffer_traits> +class iterator_buffer final : public Traits, public buffer<T> { + private: + OutputIt out_; + enum { buffer_size = 256 }; + T data_[buffer_size]; + + protected: + FMT_CONSTEXPR20 void grow(size_t) override { + if (this->size() == buffer_size) flush(); + } + + void flush() { + auto size = this->size(); + this->clear(); + out_ = copy_str<T>(data_, data_ + this->limit(size), out_); + } + + public: + explicit iterator_buffer(OutputIt out, size_t n = buffer_size) + : Traits(n), buffer<T>(data_, 0, buffer_size), out_(out) {} + iterator_buffer(iterator_buffer&& other) + : Traits(other), buffer<T>(data_, 0, buffer_size), out_(other.out_) {} + ~iterator_buffer() { flush(); } + + auto out() -> OutputIt { + flush(); + return out_; + } + auto count() const -> size_t { return Traits::count() + this->size(); } +}; + +template <typename T> +class iterator_buffer<T*, T, fixed_buffer_traits> final + : public fixed_buffer_traits, + public buffer<T> { + private: + T* out_; + enum { buffer_size = 256 }; + T data_[buffer_size]; + + protected: + FMT_CONSTEXPR20 void grow(size_t) override { + if (this->size() == this->capacity()) flush(); + } + + void flush() { + size_t n = this->limit(this->size()); + if (this->data() == out_) { + out_ += n; + this->set(data_, buffer_size); + } + this->clear(); + } + + public: + explicit iterator_buffer(T* out, size_t n = buffer_size) + : fixed_buffer_traits(n), buffer<T>(out, 0, n), out_(out) {} + iterator_buffer(iterator_buffer&& other) + : fixed_buffer_traits(other), + buffer<T>(std::move(other)), + out_(other.out_) { + if (this->data() != out_) { + this->set(data_, buffer_size); + this->clear(); + } + } + ~iterator_buffer() { flush(); } + + auto out() -> T* { + flush(); + return out_; + } + auto count() const -> size_t { + return fixed_buffer_traits::count() + this->size(); + } +}; + +template <typename T> class iterator_buffer<T*, T> final : public buffer<T> { + protected: + FMT_CONSTEXPR20 void grow(size_t) override {} + + public: + explicit iterator_buffer(T* out, size_t = 0) : buffer<T>(out, 0, ~size_t()) {} + + auto out() -> T* { return &*this->end(); } +}; + +// A buffer that writes to a container with the contiguous storage. +template <typename Container> +class iterator_buffer<std::back_insert_iterator<Container>, + enable_if_t<is_contiguous<Container>::value, + typename Container::value_type>> + final : public buffer<typename Container::value_type> { + private: + Container& container_; + + protected: + FMT_CONSTEXPR20 void grow(size_t capacity) override { + container_.resize(capacity); + this->set(&container_[0], capacity); + } + + public: + explicit iterator_buffer(Container& c) + : buffer<typename Container::value_type>(c.size()), container_(c) {} + explicit iterator_buffer(std::back_insert_iterator<Container> out, size_t = 0) + : iterator_buffer(get_container(out)) {} + + auto out() -> std::back_insert_iterator<Container> { + return std::back_inserter(container_); + } +}; + +// A buffer that counts the number of code units written discarding the output. +template <typename T = char> class counting_buffer final : public buffer<T> { + private: + enum { buffer_size = 256 }; + T data_[buffer_size]; + size_t count_ = 0; + + protected: + FMT_CONSTEXPR20 void grow(size_t) override { + if (this->size() != buffer_size) return; + count_ += this->size(); + this->clear(); + } + + public: + counting_buffer() : buffer<T>(data_, 0, buffer_size) {} + + auto count() -> size_t { return count_ + this->size(); } +}; + +template <typename T> +using buffer_appender = conditional_t<std::is_same<T, char>::value, appender, + std::back_insert_iterator<buffer<T>>>; + +// Maps an output iterator to a buffer. +template <typename T, typename OutputIt> +auto get_buffer(OutputIt out) -> iterator_buffer<OutputIt, T> { + return iterator_buffer<OutputIt, T>(out); +} + +template <typename Buffer> +auto get_iterator(Buffer& buf) -> decltype(buf.out()) { + return buf.out(); +} +template <typename T> auto get_iterator(buffer<T>& buf) -> buffer_appender<T> { + return buffer_appender<T>(buf); +} + +template <typename T, typename Char = char, typename Enable = void> +struct fallback_formatter { + fallback_formatter() = delete; +}; + +// Specifies if T has an enabled fallback_formatter specialization. +template <typename T, typename Char> +using has_fallback_formatter = +#ifdef FMT_DEPRECATED_OSTREAM + std::is_constructible<fallback_formatter<T, Char>>; +#else + std::false_type; +#endif + +struct view {}; + +template <typename Char, typename T> struct named_arg : view { + const Char* name; + const T& value; + named_arg(const Char* n, const T& v) : name(n), value(v) {} +}; + +template <typename Char> struct named_arg_info { + const Char* name; + int id; +}; + +template <typename T, typename Char, size_t NUM_ARGS, size_t NUM_NAMED_ARGS> +struct arg_data { + // args_[0].named_args points to named_args_ to avoid bloating format_args. + // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning. + T args_[1 + (NUM_ARGS != 0 ? NUM_ARGS : +1)]; + named_arg_info<Char> named_args_[NUM_NAMED_ARGS]; + + template <typename... U> + arg_data(const U&... init) : args_{T(named_args_, NUM_NAMED_ARGS), init...} {} + arg_data(const arg_data& other) = delete; + auto args() const -> const T* { return args_ + 1; } + auto named_args() -> named_arg_info<Char>* { return named_args_; } +}; + +template <typename T, typename Char, size_t NUM_ARGS> +struct arg_data<T, Char, NUM_ARGS, 0> { + // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning. + T args_[NUM_ARGS != 0 ? NUM_ARGS : +1]; + + template <typename... U> + FMT_CONSTEXPR FMT_INLINE arg_data(const U&... init) : args_{init...} {} + FMT_CONSTEXPR FMT_INLINE auto args() const -> const T* { return args_; } + FMT_CONSTEXPR FMT_INLINE auto named_args() -> std::nullptr_t { + return nullptr; + } +}; + +template <typename Char> +inline void init_named_args(named_arg_info<Char>*, int, int) {} + +template <typename T> struct is_named_arg : std::false_type {}; +template <typename T> struct is_statically_named_arg : std::false_type {}; + +template <typename T, typename Char> +struct is_named_arg<named_arg<Char, T>> : std::true_type {}; + +template <typename Char, typename T, typename... Tail, + FMT_ENABLE_IF(!is_named_arg<T>::value)> +void init_named_args(named_arg_info<Char>* named_args, int arg_count, + int named_arg_count, const T&, const Tail&... args) { + init_named_args(named_args, arg_count + 1, named_arg_count, args...); +} + +template <typename Char, typename T, typename... Tail, + FMT_ENABLE_IF(is_named_arg<T>::value)> +void init_named_args(named_arg_info<Char>* named_args, int arg_count, + int named_arg_count, const T& arg, const Tail&... args) { + named_args[named_arg_count++] = {arg.name, arg_count}; + init_named_args(named_args, arg_count + 1, named_arg_count, args...); +} + +template <typename... Args> +FMT_CONSTEXPR FMT_INLINE void init_named_args(std::nullptr_t, int, int, + const Args&...) {} + +template <bool B = false> constexpr auto count() -> size_t { return B ? 1 : 0; } +template <bool B1, bool B2, bool... Tail> constexpr auto count() -> size_t { + return (B1 ? 1 : 0) + count<B2, Tail...>(); +} + +template <typename... Args> constexpr auto count_named_args() -> size_t { + return count<is_named_arg<Args>::value...>(); +} + +template <typename... Args> +constexpr auto count_statically_named_args() -> size_t { + return count<is_statically_named_arg<Args>::value...>(); +} + +struct unformattable {}; +struct unformattable_char : unformattable {}; +struct unformattable_const : unformattable {}; +struct unformattable_pointer : unformattable {}; + +template <typename Char> struct string_value { + const Char* data; + size_t size; +}; + +template <typename Char> struct named_arg_value { + const named_arg_info<Char>* data; + size_t size; +}; + +template <typename Context> struct custom_value { + using parse_context = typename Context::parse_context_type; + void* value; + void (*format)(void* arg, parse_context& parse_ctx, Context& ctx); +}; + +// A formatting argument value. +template <typename Context> class value { + public: + using char_type = typename Context::char_type; + + union { + monostate no_value; + int int_value; + unsigned uint_value; + long long long_long_value; + unsigned long long ulong_long_value; + int128_opt int128_value; + uint128_opt uint128_value; + bool bool_value; + char_type char_value; + float float_value; + double double_value; + long double long_double_value; + const void* pointer; + string_value<char_type> string; + custom_value<Context> custom; + named_arg_value<char_type> named_args; + }; + + constexpr FMT_INLINE value() : no_value() {} + constexpr FMT_INLINE value(int val) : int_value(val) {} + constexpr FMT_INLINE value(unsigned val) : uint_value(val) {} + constexpr FMT_INLINE value(long long val) : long_long_value(val) {} + constexpr FMT_INLINE value(unsigned long long val) : ulong_long_value(val) {} + FMT_INLINE value(int128_opt val) : int128_value(val) {} + FMT_INLINE value(uint128_opt val) : uint128_value(val) {} + constexpr FMT_INLINE value(float val) : float_value(val) {} + constexpr FMT_INLINE value(double val) : double_value(val) {} + FMT_INLINE value(long double val) : long_double_value(val) {} + constexpr FMT_INLINE value(bool val) : bool_value(val) {} + constexpr FMT_INLINE value(char_type val) : char_value(val) {} + FMT_CONSTEXPR FMT_INLINE value(const char_type* val) { + string.data = val; + if (is_constant_evaluated()) string.size = {}; + } + FMT_CONSTEXPR FMT_INLINE value(basic_string_view<char_type> val) { + string.data = val.data(); + string.size = val.size(); + } + FMT_INLINE value(const void* val) : pointer(val) {} + FMT_INLINE value(const named_arg_info<char_type>* args, size_t size) + : named_args{args, size} {} + + template <typename T> FMT_CONSTEXPR FMT_INLINE value(T& val) { + using value_type = remove_cvref_t<T>; + custom.value = const_cast<value_type*>(&val); + // Get the formatter type through the context to allow different contexts + // have different extension points, e.g. `formatter<T>` for `format` and + // `printf_formatter<T>` for `printf`. + custom.format = format_custom_arg< + value_type, + conditional_t<has_formatter<value_type, Context>::value, + typename Context::template formatter_type<value_type>, + fallback_formatter<value_type, char_type>>>; + } + value(unformattable); + value(unformattable_char); + value(unformattable_const); + value(unformattable_pointer); + + private: + // Formats an argument of a custom type, such as a user-defined class. + template <typename T, typename Formatter> + static void format_custom_arg(void* arg, + typename Context::parse_context_type& parse_ctx, + Context& ctx) { + auto f = Formatter(); + parse_ctx.advance_to(f.parse(parse_ctx)); + using qualified_type = + conditional_t<has_const_formatter<T, Context>(), const T, T>; + ctx.advance_to(f.format(*static_cast<qualified_type*>(arg), ctx)); + } +}; + +template <typename Context, typename T> +FMT_CONSTEXPR auto make_arg(T&& value) -> basic_format_arg<Context>; + +// To minimize the number of types we need to deal with, long is translated +// either to int or to long long depending on its size. +enum { long_short = sizeof(long) == sizeof(int) }; +using long_type = conditional_t<long_short, int, long long>; +using ulong_type = conditional_t<long_short, unsigned, unsigned long long>; + +#ifdef __cpp_lib_byte +inline auto format_as(std::byte b) -> unsigned char { + return static_cast<unsigned char>(b); +} +#endif + +template <typename T> struct has_format_as { + template <typename U, typename V = decltype(format_as(U())), + FMT_ENABLE_IF(std::is_enum<U>::value&& std::is_integral<V>::value)> + static auto check(U*) -> std::true_type; + static auto check(...) -> std::false_type; + + enum { value = decltype(check(static_cast<T*>(nullptr)))::value }; +}; + +// Maps formatting arguments to core types. +// arg_mapper reports errors by returning unformattable instead of using +// static_assert because it's used in the is_formattable trait. +template <typename Context> struct arg_mapper { + using char_type = typename Context::char_type; + + FMT_CONSTEXPR FMT_INLINE auto map(signed char val) -> int { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned char val) -> unsigned { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(short val) -> int { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned short val) -> unsigned { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(int val) -> int { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned val) -> unsigned { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(long val) -> long_type { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned long val) -> ulong_type { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(long long val) -> long long { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned long long val) + -> unsigned long long { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(int128_opt val) -> int128_opt { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(uint128_opt val) -> uint128_opt { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(bool val) -> bool { return val; } + + template <typename T, FMT_ENABLE_IF(std::is_same<T, char>::value || + std::is_same<T, char_type>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(T val) -> char_type { + return val; + } + template <typename T, enable_if_t<(std::is_same<T, wchar_t>::value || +#ifdef __cpp_char8_t + std::is_same<T, char8_t>::value || +#endif + std::is_same<T, char16_t>::value || + std::is_same<T, char32_t>::value) && + !std::is_same<T, char_type>::value, + int> = 0> + FMT_CONSTEXPR FMT_INLINE auto map(T) -> unformattable_char { + return {}; + } + + FMT_CONSTEXPR FMT_INLINE auto map(float val) -> float { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(double val) -> double { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(long double val) -> long double { + return val; + } + + FMT_CONSTEXPR FMT_INLINE auto map(char_type* val) -> const char_type* { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(const char_type* val) -> const char_type* { + return val; + } + template <typename T, + FMT_ENABLE_IF(is_string<T>::value && !std::is_pointer<T>::value && + std::is_same<char_type, char_t<T>>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> basic_string_view<char_type> { + return to_string_view(val); + } + template <typename T, + FMT_ENABLE_IF(is_string<T>::value && !std::is_pointer<T>::value && + !std::is_same<char_type, char_t<T>>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T&) -> unformattable_char { + return {}; + } + template <typename T, + FMT_ENABLE_IF( + std::is_convertible<T, basic_string_view<char_type>>::value && + !is_string<T>::value && !has_formatter<T, Context>::value && + !has_fallback_formatter<T, char_type>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> basic_string_view<char_type> { + return basic_string_view<char_type>(val); + } + template <typename T, + FMT_ENABLE_IF( + std::is_convertible<T, std_string_view<char_type>>::value && + !std::is_convertible<T, basic_string_view<char_type>>::value && + !is_string<T>::value && !has_formatter<T, Context>::value && + !has_fallback_formatter<T, char_type>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> basic_string_view<char_type> { + return std_string_view<char_type>(val); + } + + FMT_CONSTEXPR FMT_INLINE auto map(void* val) -> const void* { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(const void* val) -> const void* { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(std::nullptr_t val) -> const void* { + return val; + } + + // We use SFINAE instead of a const T* parameter to avoid conflicting with + // the C array overload. + template < + typename T, + FMT_ENABLE_IF( + std::is_pointer<T>::value || std::is_member_pointer<T>::value || + std::is_function<typename std::remove_pointer<T>::type>::value || + (std::is_convertible<const T&, const void*>::value && + !std::is_convertible<const T&, const char_type*>::value && + !has_formatter<T, Context>::value))> + FMT_CONSTEXPR auto map(const T&) -> unformattable_pointer { + return {}; + } + + template <typename T, std::size_t N, + FMT_ENABLE_IF(!std::is_same<T, wchar_t>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T (&values)[N]) -> const T (&)[N] { + return values; + } + + template <typename T, + FMT_ENABLE_IF( + std::is_enum<T>::value&& std::is_convertible<T, int>::value && + !has_format_as<T>::value && !has_formatter<T, Context>::value && + !has_fallback_formatter<T, char_type>::value)> + FMT_DEPRECATED FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> decltype(std::declval<arg_mapper>().map( + static_cast<underlying_t<T>>(val))) { + return map(static_cast<underlying_t<T>>(val)); + } + + template <typename T, FMT_ENABLE_IF(has_format_as<T>::value && + !has_formatter<T, Context>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> decltype(std::declval<arg_mapper>().map(format_as(T()))) { + return map(format_as(val)); + } + + template <typename T, typename U = remove_cvref_t<T>> + struct formattable + : bool_constant<has_const_formatter<U, Context>() || + !std::is_const<remove_reference_t<T>>::value || + has_fallback_formatter<U, char_type>::value> {}; + +#if (FMT_MSC_VERSION != 0 && FMT_MSC_VERSION < 1910) || \ + FMT_ICC_VERSION != 0 || defined(__NVCC__) + // Workaround a bug in MSVC and Intel (Issue 2746). + template <typename T> FMT_CONSTEXPR FMT_INLINE auto do_map(T&& val) -> T& { + return val; + } +#else + template <typename T, FMT_ENABLE_IF(formattable<T>::value)> + FMT_CONSTEXPR FMT_INLINE auto do_map(T&& val) -> T& { + return val; + } + template <typename T, FMT_ENABLE_IF(!formattable<T>::value)> + FMT_CONSTEXPR FMT_INLINE auto do_map(T&&) -> unformattable_const { + return {}; + } +#endif + + template <typename T, typename U = remove_cvref_t<T>, + FMT_ENABLE_IF(!is_string<U>::value && !is_char<U>::value && + !std::is_array<U>::value && + !std::is_pointer<U>::value && + !has_format_as<U>::value && + (has_formatter<U, Context>::value || + has_fallback_formatter<U, char_type>::value))> + FMT_CONSTEXPR FMT_INLINE auto map(T&& val) + -> decltype(this->do_map(std::forward<T>(val))) { + return do_map(std::forward<T>(val)); + } + + template <typename T, FMT_ENABLE_IF(is_named_arg<T>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& named_arg) + -> decltype(std::declval<arg_mapper>().map(named_arg.value)) { + return map(named_arg.value); + } + + auto map(...) -> unformattable { return {}; } +}; + +// A type constant after applying arg_mapper<Context>. +template <typename T, typename Context> +using mapped_type_constant = + type_constant<decltype(arg_mapper<Context>().map(std::declval<const T&>())), + typename Context::char_type>; + +enum { packed_arg_bits = 4 }; +// Maximum number of arguments with packed types. +enum { max_packed_args = 62 / packed_arg_bits }; +enum : unsigned long long { is_unpacked_bit = 1ULL << 63 }; +enum : unsigned long long { has_named_args_bit = 1ULL << 62 }; + +FMT_END_DETAIL_NAMESPACE + +// An output iterator that appends to a buffer. +// It is used to reduce symbol sizes for the common case. +class appender : public std::back_insert_iterator<detail::buffer<char>> { + using base = std::back_insert_iterator<detail::buffer<char>>; + + template <typename T> + friend auto get_buffer(appender out) -> detail::buffer<char>& { + return detail::get_container(out); + } + + public: + using std::back_insert_iterator<detail::buffer<char>>::back_insert_iterator; + appender(base it) noexcept : base(it) {} + FMT_UNCHECKED_ITERATOR(appender); + + auto operator++() noexcept -> appender& { return *this; } + auto operator++(int) noexcept -> appender { return *this; } +}; + +// A formatting argument. It is a trivially copyable/constructible type to +// allow storage in basic_memory_buffer. +template <typename Context> class basic_format_arg { + private: + detail::value<Context> value_; + detail::type type_; + + template <typename ContextType, typename T> + friend FMT_CONSTEXPR auto detail::make_arg(T&& value) + -> basic_format_arg<ContextType>; + + template <typename Visitor, typename Ctx> + friend FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis, + const basic_format_arg<Ctx>& arg) + -> decltype(vis(0)); + + friend class basic_format_args<Context>; + friend class dynamic_format_arg_store<Context>; + + using char_type = typename Context::char_type; + + template <typename T, typename Char, size_t NUM_ARGS, size_t NUM_NAMED_ARGS> + friend struct detail::arg_data; + + basic_format_arg(const detail::named_arg_info<char_type>* args, size_t size) + : value_(args, size) {} + + public: + class handle { + public: + explicit handle(detail::custom_value<Context> custom) : custom_(custom) {} + + void format(typename Context::parse_context_type& parse_ctx, + Context& ctx) const { + custom_.format(custom_.value, parse_ctx, ctx); + } + + private: + detail::custom_value<Context> custom_; + }; + + constexpr basic_format_arg() : type_(detail::type::none_type) {} + + constexpr explicit operator bool() const noexcept { + return type_ != detail::type::none_type; + } + + auto type() const -> detail::type { return type_; } + + auto is_integral() const -> bool { return detail::is_integral_type(type_); } + auto is_arithmetic() const -> bool { + return detail::is_arithmetic_type(type_); + } +}; + +/** + \rst + Visits an argument dispatching to the appropriate visit method based on + the argument type. For example, if the argument type is ``double`` then + ``vis(value)`` will be called with the value of type ``double``. + \endrst + */ +template <typename Visitor, typename Context> +FMT_CONSTEXPR FMT_INLINE auto visit_format_arg( + Visitor&& vis, const basic_format_arg<Context>& arg) -> decltype(vis(0)) { + switch (arg.type_) { + case detail::type::none_type: + break; + case detail::type::int_type: + return vis(arg.value_.int_value); + case detail::type::uint_type: + return vis(arg.value_.uint_value); + case detail::type::long_long_type: + return vis(arg.value_.long_long_value); + case detail::type::ulong_long_type: + return vis(arg.value_.ulong_long_value); + case detail::type::int128_type: + return vis(detail::convert_for_visit(arg.value_.int128_value)); + case detail::type::uint128_type: + return vis(detail::convert_for_visit(arg.value_.uint128_value)); + case detail::type::bool_type: + return vis(arg.value_.bool_value); + case detail::type::char_type: + return vis(arg.value_.char_value); + case detail::type::float_type: + return vis(arg.value_.float_value); + case detail::type::double_type: + return vis(arg.value_.double_value); + case detail::type::long_double_type: + return vis(arg.value_.long_double_value); + case detail::type::cstring_type: + return vis(arg.value_.string.data); + case detail::type::string_type: + using sv = basic_string_view<typename Context::char_type>; + return vis(sv(arg.value_.string.data, arg.value_.string.size)); + case detail::type::pointer_type: + return vis(arg.value_.pointer); + case detail::type::custom_type: + return vis(typename basic_format_arg<Context>::handle(arg.value_.custom)); + } + return vis(monostate()); +} + +FMT_BEGIN_DETAIL_NAMESPACE + +template <typename Char, typename InputIt> +auto copy_str(InputIt begin, InputIt end, appender out) -> appender { + get_container(out).append(begin, end); + return out; +} + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500 +// A workaround for gcc 4.8 to make void_t work in a SFINAE context. +template <typename... Ts> struct void_t_impl { using type = void; }; +template <typename... Ts> +using void_t = typename detail::void_t_impl<Ts...>::type; +#else +template <typename...> using void_t = void; +#endif + +template <typename It, typename T, typename Enable = void> +struct is_output_iterator : std::false_type {}; + +template <typename It, typename T> +struct is_output_iterator< + It, T, + void_t<typename std::iterator_traits<It>::iterator_category, + decltype(*std::declval<It>() = std::declval<T>())>> + : std::true_type {}; + +template <typename OutputIt> +struct is_back_insert_iterator : std::false_type {}; +template <typename Container> +struct is_back_insert_iterator<std::back_insert_iterator<Container>> + : std::true_type {}; + +template <typename OutputIt> +struct is_contiguous_back_insert_iterator : std::false_type {}; +template <typename Container> +struct is_contiguous_back_insert_iterator<std::back_insert_iterator<Container>> + : is_contiguous<Container> {}; +template <> +struct is_contiguous_back_insert_iterator<appender> : std::true_type {}; + +// A type-erased reference to an std::locale to avoid a heavy <locale> include. +class locale_ref { + private: + const void* locale_; // A type-erased pointer to std::locale. + + public: + constexpr locale_ref() : locale_(nullptr) {} + template <typename Locale> explicit locale_ref(const Locale& loc); + + explicit operator bool() const noexcept { return locale_ != nullptr; } + + template <typename Locale> auto get() const -> Locale; +}; + +template <typename> constexpr auto encode_types() -> unsigned long long { + return 0; +} + +template <typename Context, typename Arg, typename... Args> +constexpr auto encode_types() -> unsigned long long { + return static_cast<unsigned>(mapped_type_constant<Arg, Context>::value) | + (encode_types<Context, Args...>() << packed_arg_bits); +} + +template <typename Context, typename T> +FMT_CONSTEXPR FMT_INLINE auto make_value(T&& val) -> value<Context> { + const auto& arg = arg_mapper<Context>().map(std::forward<T>(val)); + + constexpr bool formattable_char = + !std::is_same<decltype(arg), const unformattable_char&>::value; + static_assert(formattable_char, "Mixing character types is disallowed."); + + constexpr bool formattable_const = + !std::is_same<decltype(arg), const unformattable_const&>::value; + static_assert(formattable_const, "Cannot format a const argument."); + + // Formatting of arbitrary pointers is disallowed. If you want to output + // a pointer cast it to "void *" or "const void *". In particular, this + // forbids formatting of "[const] volatile char *" which is printed as bool + // by iostreams. + constexpr bool formattable_pointer = + !std::is_same<decltype(arg), const unformattable_pointer&>::value; + static_assert(formattable_pointer, + "Formatting of non-void pointers is disallowed."); + + constexpr bool formattable = + !std::is_same<decltype(arg), const unformattable&>::value; + static_assert( + formattable, + "Cannot format an argument. To make type T formattable provide a " + "formatter<T> specialization: https://fmt.dev/latest/api.html#udt"); + return {arg}; +} + +template <typename Context, typename T> +FMT_CONSTEXPR auto make_arg(T&& value) -> basic_format_arg<Context> { + basic_format_arg<Context> arg; + arg.type_ = mapped_type_constant<T, Context>::value; + arg.value_ = make_value<Context>(value); + return arg; +} + +// The type template parameter is there to avoid an ODR violation when using +// a fallback formatter in one translation unit and an implicit conversion in +// another (not recommended). +template <bool IS_PACKED, typename Context, type, typename T, + FMT_ENABLE_IF(IS_PACKED)> +FMT_CONSTEXPR FMT_INLINE auto make_arg(T&& val) -> value<Context> { + return make_value<Context>(val); +} + +template <bool IS_PACKED, typename Context, type, typename T, + FMT_ENABLE_IF(!IS_PACKED)> +FMT_CONSTEXPR inline auto make_arg(T&& value) -> basic_format_arg<Context> { + return make_arg<Context>(value); +} +FMT_END_DETAIL_NAMESPACE + +// Formatting context. +template <typename OutputIt, typename Char> class basic_format_context { + public: + /** The character type for the output. */ + using char_type = Char; + + private: + OutputIt out_; + basic_format_args<basic_format_context> args_; + detail::locale_ref loc_; + + public: + using iterator = OutputIt; + using format_arg = basic_format_arg<basic_format_context>; + using parse_context_type = basic_format_parse_context<Char>; + template <typename T> using formatter_type = formatter<T, char_type>; + + basic_format_context(basic_format_context&&) = default; + basic_format_context(const basic_format_context&) = delete; + void operator=(const basic_format_context&) = delete; + /** + Constructs a ``basic_format_context`` object. References to the arguments are + stored in the object so make sure they have appropriate lifetimes. + */ + constexpr basic_format_context( + OutputIt out, basic_format_args<basic_format_context> ctx_args, + detail::locale_ref loc = detail::locale_ref()) + : out_(out), args_(ctx_args), loc_(loc) {} + + constexpr auto arg(int id) const -> format_arg { return args_.get(id); } + FMT_CONSTEXPR auto arg(basic_string_view<char_type> name) -> format_arg { + return args_.get(name); + } + FMT_CONSTEXPR auto arg_id(basic_string_view<char_type> name) -> int { + return args_.get_id(name); + } + auto args() const -> const basic_format_args<basic_format_context>& { + return args_; + } + + FMT_CONSTEXPR auto error_handler() -> detail::error_handler { return {}; } + void on_error(const char* message) { error_handler().on_error(message); } + + // Returns an iterator to the beginning of the output range. + FMT_CONSTEXPR auto out() -> iterator { return out_; } + + // Advances the begin iterator to ``it``. + void advance_to(iterator it) { + if (!detail::is_back_insert_iterator<iterator>()) out_ = it; + } + + FMT_CONSTEXPR auto locale() -> detail::locale_ref { return loc_; } +}; + +template <typename Char> +using buffer_context = + basic_format_context<detail::buffer_appender<Char>, Char>; +using format_context = buffer_context<char>; + +// Workaround an alias issue: https://stackoverflow.com/q/62767544/471164. +#define FMT_BUFFER_CONTEXT(Char) \ + basic_format_context<detail::buffer_appender<Char>, Char> + +template <typename T, typename Char = char> +using is_formattable = bool_constant< + !std::is_base_of<detail::unformattable, + decltype(detail::arg_mapper<buffer_context<Char>>().map( + std::declval<T>()))>::value && + !detail::has_fallback_formatter<T, Char>::value>; + +/** + \rst + An array of references to arguments. It can be implicitly converted into + `~fmt::basic_format_args` for passing into type-erased formatting functions + such as `~fmt::vformat`. + \endrst + */ +template <typename Context, typename... Args> +class format_arg_store +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + // Workaround a GCC template argument substitution bug. + : public basic_format_args<Context> +#endif +{ + private: + static const size_t num_args = sizeof...(Args); + static const size_t num_named_args = detail::count_named_args<Args...>(); + static const bool is_packed = num_args <= detail::max_packed_args; + + using value_type = conditional_t<is_packed, detail::value<Context>, + basic_format_arg<Context>>; + + detail::arg_data<value_type, typename Context::char_type, num_args, + num_named_args> + data_; + + friend class basic_format_args<Context>; + + static constexpr unsigned long long desc = + (is_packed ? detail::encode_types<Context, Args...>() + : detail::is_unpacked_bit | num_args) | + (num_named_args != 0 + ? static_cast<unsigned long long>(detail::has_named_args_bit) + : 0); + + public: + template <typename... T> + FMT_CONSTEXPR FMT_INLINE format_arg_store(T&&... args) + : +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + basic_format_args<Context>(*this), +#endif + data_{detail::make_arg< + is_packed, Context, + detail::mapped_type_constant<remove_cvref_t<T>, Context>::value>( + std::forward<T>(args))...} { + detail::init_named_args(data_.named_args(), 0, 0, args...); + } +}; + +/** + \rst + Constructs a `~fmt::format_arg_store` object that contains references to + arguments and can be implicitly converted to `~fmt::format_args`. `Context` + can be omitted in which case it defaults to `~fmt::context`. + See `~fmt::arg` for lifetime considerations. + \endrst + */ +template <typename Context = format_context, typename... Args> +constexpr auto make_format_args(Args&&... args) + -> format_arg_store<Context, remove_cvref_t<Args>...> { + return {std::forward<Args>(args)...}; +} + +/** + \rst + Returns a named argument to be used in a formatting function. + It should only be used in a call to a formatting function or + `dynamic_format_arg_store::push_back`. + + **Example**:: + + fmt::print("Elapsed time: {s:.2f} seconds", fmt::arg("s", 1.23)); + \endrst + */ +template <typename Char, typename T> +inline auto arg(const Char* name, const T& arg) -> detail::named_arg<Char, T> { + static_assert(!detail::is_named_arg<T>(), "nested named arguments"); + return {name, arg}; +} + +/** + \rst + A view of a collection of formatting arguments. To avoid lifetime issues it + should only be used as a parameter type in type-erased functions such as + ``vformat``:: + + void vlog(string_view format_str, format_args args); // OK + format_args args = make_format_args(42); // Error: dangling reference + \endrst + */ +template <typename Context> class basic_format_args { + public: + using size_type = int; + using format_arg = basic_format_arg<Context>; + + private: + // A descriptor that contains information about formatting arguments. + // If the number of arguments is less or equal to max_packed_args then + // argument types are passed in the descriptor. This reduces binary code size + // per formatting function call. + unsigned long long desc_; + union { + // If is_packed() returns true then argument values are stored in values_; + // otherwise they are stored in args_. This is done to improve cache + // locality and reduce compiled code size since storing larger objects + // may require more code (at least on x86-64) even if the same amount of + // data is actually copied to stack. It saves ~10% on the bloat test. + const detail::value<Context>* values_; + const format_arg* args_; + }; + + constexpr auto is_packed() const -> bool { + return (desc_ & detail::is_unpacked_bit) == 0; + } + auto has_named_args() const -> bool { + return (desc_ & detail::has_named_args_bit) != 0; + } + + FMT_CONSTEXPR auto type(int index) const -> detail::type { + int shift = index * detail::packed_arg_bits; + unsigned int mask = (1 << detail::packed_arg_bits) - 1; + return static_cast<detail::type>((desc_ >> shift) & mask); + } + + constexpr FMT_INLINE basic_format_args(unsigned long long desc, + const detail::value<Context>* values) + : desc_(desc), values_(values) {} + constexpr basic_format_args(unsigned long long desc, const format_arg* args) + : desc_(desc), args_(args) {} + + public: + constexpr basic_format_args() : desc_(0), args_(nullptr) {} + + /** + \rst + Constructs a `basic_format_args` object from `~fmt::format_arg_store`. + \endrst + */ + template <typename... Args> + constexpr FMT_INLINE basic_format_args( + const format_arg_store<Context, Args...>& store) + : basic_format_args(format_arg_store<Context, Args...>::desc, + store.data_.args()) {} + + /** + \rst + Constructs a `basic_format_args` object from + `~fmt::dynamic_format_arg_store`. + \endrst + */ + constexpr FMT_INLINE basic_format_args( + const dynamic_format_arg_store<Context>& store) + : basic_format_args(store.get_types(), store.data()) {} + + /** + \rst + Constructs a `basic_format_args` object from a dynamic set of arguments. + \endrst + */ + constexpr basic_format_args(const format_arg* args, int count) + : basic_format_args(detail::is_unpacked_bit | detail::to_unsigned(count), + args) {} + + /** Returns the argument with the specified id. */ + FMT_CONSTEXPR auto get(int id) const -> format_arg { + format_arg arg; + if (!is_packed()) { + if (id < max_size()) arg = args_[id]; + return arg; + } + if (id >= detail::max_packed_args) return arg; + arg.type_ = type(id); + if (arg.type_ == detail::type::none_type) return arg; + arg.value_ = values_[id]; + return arg; + } + + template <typename Char> + auto get(basic_string_view<Char> name) const -> format_arg { + int id = get_id(name); + return id >= 0 ? get(id) : format_arg(); + } + + template <typename Char> + auto get_id(basic_string_view<Char> name) const -> int { + if (!has_named_args()) return -1; + const auto& named_args = + (is_packed() ? values_[-1] : args_[-1].value_).named_args; + for (size_t i = 0; i < named_args.size; ++i) { + if (named_args.data[i].name == name) return named_args.data[i].id; + } + return -1; + } + + auto max_size() const -> int { + unsigned long long max_packed = detail::max_packed_args; + return static_cast<int>(is_packed() ? max_packed + : desc_ & ~detail::is_unpacked_bit); + } +}; + +/** An alias to ``basic_format_args<format_context>``. */ +// A separate type would result in shorter symbols but break ABI compatibility +// between clang and gcc on ARM (#1919). +using format_args = basic_format_args<format_context>; + +// We cannot use enum classes as bit fields because of a gcc bug, so we put them +// in namespaces instead (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414). +// Additionally, if an underlying type is specified, older gcc incorrectly warns +// that the type is too small. Both bugs are fixed in gcc 9.3. +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 903 +# define FMT_ENUM_UNDERLYING_TYPE(type) +#else +# define FMT_ENUM_UNDERLYING_TYPE(type) : type +#endif +namespace align { +enum type FMT_ENUM_UNDERLYING_TYPE(unsigned char){none, left, right, center, + numeric}; +} +using align_t = align::type; +namespace sign { +enum type FMT_ENUM_UNDERLYING_TYPE(unsigned char){none, minus, plus, space}; +} +using sign_t = sign::type; + +FMT_BEGIN_DETAIL_NAMESPACE + +// Workaround an array initialization issue in gcc 4.8. +template <typename Char> struct fill_t { + private: + enum { max_size = 4 }; + Char data_[max_size] = {Char(' '), Char(0), Char(0), Char(0)}; + unsigned char size_ = 1; + + public: + FMT_CONSTEXPR void operator=(basic_string_view<Char> s) { + auto size = s.size(); + if (size > max_size) return throw_format_error("invalid fill"); + for (size_t i = 0; i < size; ++i) data_[i] = s[i]; + size_ = static_cast<unsigned char>(size); + } + + constexpr auto size() const -> size_t { return size_; } + constexpr auto data() const -> const Char* { return data_; } + + FMT_CONSTEXPR auto operator[](size_t index) -> Char& { return data_[index]; } + FMT_CONSTEXPR auto operator[](size_t index) const -> const Char& { + return data_[index]; + } +}; +FMT_END_DETAIL_NAMESPACE + +enum class presentation_type : unsigned char { + none, + // Integer types should go first, + dec, // 'd' + oct, // 'o' + hex_lower, // 'x' + hex_upper, // 'X' + bin_lower, // 'b' + bin_upper, // 'B' + hexfloat_lower, // 'a' + hexfloat_upper, // 'A' + exp_lower, // 'e' + exp_upper, // 'E' + fixed_lower, // 'f' + fixed_upper, // 'F' + general_lower, // 'g' + general_upper, // 'G' + chr, // 'c' + string, // 's' + pointer, // 'p' + debug // '?' +}; + +// Format specifiers for built-in and string types. +template <typename Char> struct basic_format_specs { + int width; + int precision; + presentation_type type; + align_t align : 4; + sign_t sign : 3; + bool alt : 1; // Alternate form ('#'). + bool localized : 1; + detail::fill_t<Char> fill; + + constexpr basic_format_specs() + : width(0), + precision(-1), + type(presentation_type::none), + align(align::none), + sign(sign::none), + alt(false), + localized(false) {} +}; + +using format_specs = basic_format_specs<char>; + +FMT_BEGIN_DETAIL_NAMESPACE + +enum class arg_id_kind { none, index, name }; + +// An argument reference. +template <typename Char> struct arg_ref { + FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {} + + FMT_CONSTEXPR explicit arg_ref(int index) + : kind(arg_id_kind::index), val(index) {} + FMT_CONSTEXPR explicit arg_ref(basic_string_view<Char> name) + : kind(arg_id_kind::name), val(name) {} + + FMT_CONSTEXPR auto operator=(int idx) -> arg_ref& { + kind = arg_id_kind::index; + val.index = idx; + return *this; + } + + arg_id_kind kind; + union value { + FMT_CONSTEXPR value(int id = 0) : index{id} {} + FMT_CONSTEXPR value(basic_string_view<Char> n) : name(n) {} + + int index; + basic_string_view<Char> name; + } val; +}; + +// Format specifiers with width and precision resolved at formatting rather +// than parsing time to allow re-using the same parsed specifiers with +// different sets of arguments (precompilation of format strings). +template <typename Char> +struct dynamic_format_specs : basic_format_specs<Char> { + arg_ref<Char> width_ref; + arg_ref<Char> precision_ref; +}; + +struct auto_id {}; + +// A format specifier handler that sets fields in basic_format_specs. +template <typename Char> class specs_setter { + protected: + basic_format_specs<Char>& specs_; + + public: + explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs) + : specs_(specs) {} + + FMT_CONSTEXPR specs_setter(const specs_setter& other) + : specs_(other.specs_) {} + + FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; } + FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) { + specs_.fill = fill; + } + FMT_CONSTEXPR void on_sign(sign_t s) { specs_.sign = s; } + FMT_CONSTEXPR void on_hash() { specs_.alt = true; } + FMT_CONSTEXPR void on_localized() { specs_.localized = true; } + + FMT_CONSTEXPR void on_zero() { + if (specs_.align == align::none) specs_.align = align::numeric; + specs_.fill[0] = Char('0'); + } + + FMT_CONSTEXPR void on_width(int width) { specs_.width = width; } + FMT_CONSTEXPR void on_precision(int precision) { + specs_.precision = precision; + } + FMT_CONSTEXPR void end_precision() {} + + FMT_CONSTEXPR void on_type(presentation_type type) { specs_.type = type; } +}; + +// Format spec handler that saves references to arguments representing dynamic +// width and precision to be resolved at formatting time. +template <typename ParseContext> +class dynamic_specs_handler + : public specs_setter<typename ParseContext::char_type> { + public: + using char_type = typename ParseContext::char_type; + + FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs, + ParseContext& ctx) + : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {} + + FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other) + : specs_setter<char_type>(other), + specs_(other.specs_), + context_(other.context_) {} + + template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + specs_.width_ref = make_arg_ref(arg_id); + } + + template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + specs_.precision_ref = make_arg_ref(arg_id); + } + + FMT_CONSTEXPR void on_error(const char* message) { + context_.on_error(message); + } + + private: + dynamic_format_specs<char_type>& specs_; + ParseContext& context_; + + using arg_ref_type = arg_ref<char_type>; + + FMT_CONSTEXPR auto make_arg_ref(int arg_id) -> arg_ref_type { + context_.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR auto make_arg_ref(auto_id) -> arg_ref_type { + return arg_ref_type(context_.next_arg_id()); + } + + FMT_CONSTEXPR auto make_arg_ref(basic_string_view<char_type> arg_id) + -> arg_ref_type { + context_.check_arg_id(arg_id); + basic_string_view<char_type> format_str( + context_.begin(), to_unsigned(context_.end() - context_.begin())); + return arg_ref_type(arg_id); + } +}; + +template <typename Char> constexpr bool is_ascii_letter(Char c) { + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); +} + +// Converts a character to ASCII. Returns a number > 127 on conversion failure. +template <typename Char, FMT_ENABLE_IF(std::is_integral<Char>::value)> +constexpr auto to_ascii(Char c) -> Char { + return c; +} +template <typename Char, FMT_ENABLE_IF(std::is_enum<Char>::value)> +constexpr auto to_ascii(Char c) -> underlying_t<Char> { + return c; +} + +template <typename Char> +FMT_CONSTEXPR auto code_point_length(const Char* begin) -> int { + if (const_check(sizeof(Char) != 1)) return 1; + auto lengths = + "\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\0\0\0\0\0\0\0\2\2\2\2\3\3\4"; + int len = lengths[static_cast<unsigned char>(*begin) >> 3]; + + // Compute the pointer to the next character early so that the next + // iteration can start working on the next character. Neither Clang + // nor GCC figure out this reordering on their own. + return len + !len; +} + +// Return the result via the out param to workaround gcc bug 77539. +template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*> +FMT_CONSTEXPR auto find(Ptr first, Ptr last, T value, Ptr& out) -> bool { + for (out = first; out != last; ++out) { + if (*out == value) return true; + } + return false; +} + +template <> +inline auto find<false, char>(const char* first, const char* last, char value, + const char*& out) -> bool { + out = static_cast<const char*>( + std::memchr(first, value, to_unsigned(last - first))); + return out != nullptr; +} + +// Parses the range [begin, end) as an unsigned integer. This function assumes +// that the range is non-empty and the first character is a digit. +template <typename Char> +FMT_CONSTEXPR auto parse_nonnegative_int(const Char*& begin, const Char* end, + int error_value) noexcept -> int { + FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', ""); + unsigned value = 0, prev = 0; + auto p = begin; + do { + prev = value; + value = value * 10 + unsigned(*p - '0'); + ++p; + } while (p != end && '0' <= *p && *p <= '9'); + auto num_digits = p - begin; + begin = p; + if (num_digits <= std::numeric_limits<int>::digits10) + return static_cast<int>(value); + // Check for overflow. + const unsigned max = to_unsigned((std::numeric_limits<int>::max)()); + return num_digits == std::numeric_limits<int>::digits10 + 1 && + prev * 10ull + unsigned(p[-1] - '0') <= max + ? static_cast<int>(value) + : error_value; +} + +// Parses fill and alignment. +template <typename Char, typename Handler> +FMT_CONSTEXPR auto parse_align(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + FMT_ASSERT(begin != end, ""); + auto align = align::none; + auto p = begin + code_point_length(begin); + if (end - p <= 0) p = begin; + for (;;) { + switch (to_ascii(*p)) { + case '<': + align = align::left; + break; + case '>': + align = align::right; + break; + case '^': + align = align::center; + break; + default: + break; + } + if (align != align::none) { + if (p != begin) { + auto c = *begin; + if (c == '{') + return handler.on_error("invalid fill character '{'"), begin; + handler.on_fill(basic_string_view<Char>(begin, to_unsigned(p - begin))); + begin = p + 1; + } else + ++begin; + handler.on_align(align); + break; + } else if (p == begin) { + break; + } + p = begin; + } + return begin; +} + +template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) { + return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; +} + +template <typename Char, typename IDHandler> +FMT_CONSTEXPR auto do_parse_arg_id(const Char* begin, const Char* end, + IDHandler&& handler) -> const Char* { + FMT_ASSERT(begin != end, ""); + Char c = *begin; + if (c >= '0' && c <= '9') { + int index = 0; + if (c != '0') + index = + parse_nonnegative_int(begin, end, (std::numeric_limits<int>::max)()); + else + ++begin; + if (begin == end || (*begin != '}' && *begin != ':')) + handler.on_error("invalid format string"); + else + handler(index); + return begin; + } + if (!is_name_start(c)) { + handler.on_error("invalid format string"); + return begin; + } + auto it = begin; + do { + ++it; + } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9'))); + handler(basic_string_view<Char>(begin, to_unsigned(it - begin))); + return it; +} + +template <typename Char, typename IDHandler> +FMT_CONSTEXPR FMT_INLINE auto parse_arg_id(const Char* begin, const Char* end, + IDHandler&& handler) -> const Char* { + Char c = *begin; + if (c != '}' && c != ':') return do_parse_arg_id(begin, end, handler); + handler(); + return begin; +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR auto parse_width(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + using detail::auto_id; + struct width_adapter { + Handler& handler; + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); } + FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_dynamic_width(id); + } + FMT_CONSTEXPR void on_error(const char* message) { + if (message) handler.on_error(message); + } + }; + + FMT_ASSERT(begin != end, ""); + if ('0' <= *begin && *begin <= '9') { + int width = parse_nonnegative_int(begin, end, -1); + if (width != -1) + handler.on_width(width); + else + handler.on_error("number is too big"); + } else if (*begin == '{') { + ++begin; + if (begin != end) begin = parse_arg_id(begin, end, width_adapter{handler}); + if (begin == end || *begin != '}') + return handler.on_error("invalid format string"), begin; + ++begin; + } + return begin; +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR auto parse_precision(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + using detail::auto_id; + struct precision_adapter { + Handler& handler; + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); } + FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + handler.on_dynamic_precision(id); + } + FMT_CONSTEXPR void on_error(const char* message) { + if (message) handler.on_error(message); + } + }; + + ++begin; + auto c = begin != end ? *begin : Char(); + if ('0' <= c && c <= '9') { + auto precision = parse_nonnegative_int(begin, end, -1); + if (precision != -1) + handler.on_precision(precision); + else + handler.on_error("number is too big"); + } else if (c == '{') { + ++begin; + if (begin != end) + begin = parse_arg_id(begin, end, precision_adapter{handler}); + if (begin == end || *begin++ != '}') + return handler.on_error("invalid format string"), begin; + } else { + return handler.on_error("missing precision specifier"), begin; + } + handler.end_precision(); + return begin; +} + +template <typename Char> +FMT_CONSTEXPR auto parse_presentation_type(Char type) -> presentation_type { + switch (to_ascii(type)) { + case 'd': + return presentation_type::dec; + case 'o': + return presentation_type::oct; + case 'x': + return presentation_type::hex_lower; + case 'X': + return presentation_type::hex_upper; + case 'b': + return presentation_type::bin_lower; + case 'B': + return presentation_type::bin_upper; + case 'a': + return presentation_type::hexfloat_lower; + case 'A': + return presentation_type::hexfloat_upper; + case 'e': + return presentation_type::exp_lower; + case 'E': + return presentation_type::exp_upper; + case 'f': + return presentation_type::fixed_lower; + case 'F': + return presentation_type::fixed_upper; + case 'g': + return presentation_type::general_lower; + case 'G': + return presentation_type::general_upper; + case 'c': + return presentation_type::chr; + case 's': + return presentation_type::string; + case 'p': + return presentation_type::pointer; + case '?': + return presentation_type::debug; + default: + return presentation_type::none; + } +} + +// Parses standard format specifiers and sends notifications about parsed +// components to handler. +template <typename Char, typename SpecHandler> +FMT_CONSTEXPR FMT_INLINE auto parse_format_specs(const Char* begin, + const Char* end, + SpecHandler&& handler) + -> const Char* { + if (1 < end - begin && begin[1] == '}' && is_ascii_letter(*begin) && + *begin != 'L') { + presentation_type type = parse_presentation_type(*begin++); + if (type == presentation_type::none) + handler.on_error("invalid type specifier"); + handler.on_type(type); + return begin; + } + + if (begin == end) return begin; + + begin = parse_align(begin, end, handler); + if (begin == end) return begin; + + // Parse sign. + switch (to_ascii(*begin)) { + case '+': + handler.on_sign(sign::plus); + ++begin; + break; + case '-': + handler.on_sign(sign::minus); + ++begin; + break; + case ' ': + handler.on_sign(sign::space); + ++begin; + break; + default: + break; + } + if (begin == end) return begin; + + if (*begin == '#') { + handler.on_hash(); + if (++begin == end) return begin; + } + + // Parse zero flag. + if (*begin == '0') { + handler.on_zero(); + if (++begin == end) return begin; + } + + begin = parse_width(begin, end, handler); + if (begin == end) return begin; + + // Parse precision. + if (*begin == '.') { + begin = parse_precision(begin, end, handler); + if (begin == end) return begin; + } + + if (*begin == 'L') { + handler.on_localized(); + ++begin; + } + + // Parse type. + if (begin != end && *begin != '}') { + presentation_type type = parse_presentation_type(*begin++); + if (type == presentation_type::none) + handler.on_error("invalid type specifier"); + handler.on_type(type); + } + return begin; +} + +template <typename Char, typename Handler> +FMT_CONSTEXPR auto parse_replacement_field(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + struct id_adapter { + Handler& handler; + int arg_id; + + FMT_CONSTEXPR void operator()() { arg_id = handler.on_arg_id(); } + FMT_CONSTEXPR void operator()(int id) { arg_id = handler.on_arg_id(id); } + FMT_CONSTEXPR void operator()(basic_string_view<Char> id) { + arg_id = handler.on_arg_id(id); + } + FMT_CONSTEXPR void on_error(const char* message) { + if (message) handler.on_error(message); + } + }; + + ++begin; + if (begin == end) return handler.on_error("invalid format string"), end; + if (*begin == '}') { + handler.on_replacement_field(handler.on_arg_id(), begin); + } else if (*begin == '{') { + handler.on_text(begin, begin + 1); + } else { + auto adapter = id_adapter{handler, 0}; + begin = parse_arg_id(begin, end, adapter); + Char c = begin != end ? *begin : Char(); + if (c == '}') { + handler.on_replacement_field(adapter.arg_id, begin); + } else if (c == ':') { + begin = handler.on_format_specs(adapter.arg_id, begin + 1, end); + if (begin == end || *begin != '}') + return handler.on_error("unknown format specifier"), end; + } else { + return handler.on_error("missing '}' in format string"), end; + } + } + return begin + 1; +} + +template <bool IS_CONSTEXPR, typename Char, typename Handler> +FMT_CONSTEXPR FMT_INLINE void parse_format_string( + basic_string_view<Char> format_str, Handler&& handler) { + // Workaround a name-lookup bug in MSVC's modules implementation. + using detail::find; + + auto begin = format_str.data(); + auto end = begin + format_str.size(); + if (end - begin < 32) { + // Use a simple loop instead of memchr for small strings. + const Char* p = begin; + while (p != end) { + auto c = *p++; + if (c == '{') { + handler.on_text(begin, p - 1); + begin = p = parse_replacement_field(p - 1, end, handler); + } else if (c == '}') { + if (p == end || *p != '}') + return handler.on_error("unmatched '}' in format string"); + handler.on_text(begin, p); + begin = ++p; + } + } + handler.on_text(begin, end); + return; + } + struct writer { + FMT_CONSTEXPR void operator()(const Char* from, const Char* to) { + if (from == to) return; + for (;;) { + const Char* p = nullptr; + if (!find<IS_CONSTEXPR>(from, to, Char('}'), p)) + return handler_.on_text(from, to); + ++p; + if (p == to || *p != '}') + return handler_.on_error("unmatched '}' in format string"); + handler_.on_text(from, p); + from = p + 1; + } + } + Handler& handler_; + } write = {handler}; + while (begin != end) { + // Doing two passes with memchr (one for '{' and another for '}') is up to + // 2.5x faster than the naive one-pass implementation on big format strings. + const Char* p = begin; + if (*begin != '{' && !find<IS_CONSTEXPR>(begin + 1, end, Char('{'), p)) + return write(begin, end); + write(begin, p); + begin = parse_replacement_field(p, end, handler); + } +} + +template <typename T, bool = is_named_arg<T>::value> struct strip_named_arg { + using type = T; +}; +template <typename T> struct strip_named_arg<T, true> { + using type = remove_cvref_t<decltype(T::value)>; +}; + +template <typename T, typename ParseContext> +FMT_CONSTEXPR auto parse_format_specs(ParseContext& ctx) + -> decltype(ctx.begin()) { + using char_type = typename ParseContext::char_type; + using context = buffer_context<char_type>; + using stripped_type = typename strip_named_arg<T>::type; + using mapped_type = conditional_t< + mapped_type_constant<T, context>::value != type::custom_type, + decltype(arg_mapper<context>().map(std::declval<const T&>())), + stripped_type>; + auto f = conditional_t<has_formatter<mapped_type, context>::value, + formatter<mapped_type, char_type>, + fallback_formatter<stripped_type, char_type>>(); + return f.parse(ctx); +} + +template <typename ErrorHandler> +FMT_CONSTEXPR void check_int_type_spec(presentation_type type, + ErrorHandler&& eh) { + if (type > presentation_type::bin_upper && type != presentation_type::chr) + eh.on_error("invalid type specifier"); +} + +// Checks char specs and returns true if the type spec is char (and not int). +template <typename Char, typename ErrorHandler = error_handler> +FMT_CONSTEXPR auto check_char_specs(const basic_format_specs<Char>& specs, + ErrorHandler&& eh = {}) -> bool { + if (specs.type != presentation_type::none && + specs.type != presentation_type::chr && + specs.type != presentation_type::debug) { + check_int_type_spec(specs.type, eh); + return false; + } + if (specs.align == align::numeric || specs.sign != sign::none || specs.alt) + eh.on_error("invalid format specifier for char"); + return true; +} + +// A floating-point presentation format. +enum class float_format : unsigned char { + general, // General: exponent notation or fixed point based on magnitude. + exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3. + fixed, // Fixed point with the default precision of 6, e.g. 0.0012. + hex +}; + +struct float_specs { + int precision; + float_format format : 8; + sign_t sign : 8; + bool upper : 1; + bool locale : 1; + bool binary32 : 1; + bool showpoint : 1; +}; + +template <typename ErrorHandler = error_handler, typename Char> +FMT_CONSTEXPR auto parse_float_type_spec(const basic_format_specs<Char>& specs, + ErrorHandler&& eh = {}) + -> float_specs { + auto result = float_specs(); + result.showpoint = specs.alt; + result.locale = specs.localized; + switch (specs.type) { + case presentation_type::none: + result.format = float_format::general; + break; + case presentation_type::general_upper: + result.upper = true; + FMT_FALLTHROUGH; + case presentation_type::general_lower: + result.format = float_format::general; + break; + case presentation_type::exp_upper: + result.upper = true; + FMT_FALLTHROUGH; + case presentation_type::exp_lower: + result.format = float_format::exp; + result.showpoint |= specs.precision != 0; + break; + case presentation_type::fixed_upper: + result.upper = true; + FMT_FALLTHROUGH; + case presentation_type::fixed_lower: + result.format = float_format::fixed; + result.showpoint |= specs.precision != 0; + break; + case presentation_type::hexfloat_upper: + result.upper = true; + FMT_FALLTHROUGH; + case presentation_type::hexfloat_lower: + result.format = float_format::hex; + break; + default: + eh.on_error("invalid type specifier"); + break; + } + return result; +} + +template <typename ErrorHandler = error_handler> +FMT_CONSTEXPR auto check_cstring_type_spec(presentation_type type, + ErrorHandler&& eh = {}) -> bool { + if (type == presentation_type::none || type == presentation_type::string) + return true; + if (type != presentation_type::pointer) eh.on_error("invalid type specifier"); + return false; +} + +template <typename ErrorHandler = error_handler> +FMT_CONSTEXPR void check_string_type_spec(presentation_type type, + ErrorHandler&& eh = {}) { + if (type != presentation_type::none && type != presentation_type::string && + type != presentation_type::debug) + eh.on_error("invalid type specifier"); +} + +template <typename ErrorHandler> +FMT_CONSTEXPR void check_pointer_type_spec(presentation_type type, + ErrorHandler&& eh) { + if (type != presentation_type::none && type != presentation_type::pointer) + eh.on_error("invalid type specifier"); +} + +// A parse_format_specs handler that checks if specifiers are consistent with +// the argument type. +template <typename Handler> class specs_checker : public Handler { + private: + detail::type arg_type_; + + FMT_CONSTEXPR void require_numeric_argument() { + if (!is_arithmetic_type(arg_type_)) + this->on_error("format specifier requires numeric argument"); + } + + public: + FMT_CONSTEXPR specs_checker(const Handler& handler, detail::type arg_type) + : Handler(handler), arg_type_(arg_type) {} + + FMT_CONSTEXPR void on_align(align_t align) { + if (align == align::numeric) require_numeric_argument(); + Handler::on_align(align); + } + + FMT_CONSTEXPR void on_sign(sign_t s) { + require_numeric_argument(); + if (is_integral_type(arg_type_) && arg_type_ != type::int_type && + arg_type_ != type::long_long_type && arg_type_ != type::int128_type && + arg_type_ != type::char_type) { + this->on_error("format specifier requires signed argument"); + } + Handler::on_sign(s); + } + + FMT_CONSTEXPR void on_hash() { + require_numeric_argument(); + Handler::on_hash(); + } + + FMT_CONSTEXPR void on_localized() { + require_numeric_argument(); + Handler::on_localized(); + } + + FMT_CONSTEXPR void on_zero() { + require_numeric_argument(); + Handler::on_zero(); + } + + FMT_CONSTEXPR void end_precision() { + if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type) + this->on_error("precision not allowed for this argument type"); + } +}; + +constexpr int invalid_arg_index = -1; + +#if FMT_USE_NONTYPE_TEMPLATE_ARGS +template <int N, typename T, typename... Args, typename Char> +constexpr auto get_arg_index_by_name(basic_string_view<Char> name) -> int { + if constexpr (detail::is_statically_named_arg<T>()) { + if (name == T::name) return N; + } + if constexpr (sizeof...(Args) > 0) + return get_arg_index_by_name<N + 1, Args...>(name); + (void)name; // Workaround an MSVC bug about "unused" parameter. + return invalid_arg_index; +} +#endif + +template <typename... Args, typename Char> +FMT_CONSTEXPR auto get_arg_index_by_name(basic_string_view<Char> name) -> int { +#if FMT_USE_NONTYPE_TEMPLATE_ARGS + if constexpr (sizeof...(Args) > 0) + return get_arg_index_by_name<0, Args...>(name); +#endif + (void)name; + return invalid_arg_index; +} + +template <typename Char, typename ErrorHandler, typename... Args> +class format_string_checker { + private: + // In the future basic_format_parse_context will replace compile_parse_context + // here and will use is_constant_evaluated and downcasting to access the data + // needed for compile-time checks: https://godbolt.org/z/GvWzcTjh1. + using parse_context_type = compile_parse_context<Char, ErrorHandler>; + static constexpr int num_args = sizeof...(Args); + + // Format specifier parsing function. + using parse_func = const Char* (*)(parse_context_type&); + + parse_context_type context_; + parse_func parse_funcs_[num_args > 0 ? static_cast<size_t>(num_args) : 1]; + type types_[num_args > 0 ? static_cast<size_t>(num_args) : 1]; + + public: + explicit FMT_CONSTEXPR format_string_checker( + basic_string_view<Char> format_str, ErrorHandler eh) + : context_(format_str, num_args, types_, eh), + parse_funcs_{&parse_format_specs<Args, parse_context_type>...}, + types_{type_constant<Args, char>::value...} {} + + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + + FMT_CONSTEXPR auto on_arg_id() -> int { return context_.next_arg_id(); } + FMT_CONSTEXPR auto on_arg_id(int id) -> int { + return context_.check_arg_id(id), id; + } + FMT_CONSTEXPR auto on_arg_id(basic_string_view<Char> id) -> int { +#if FMT_USE_NONTYPE_TEMPLATE_ARGS + auto index = get_arg_index_by_name<Args...>(id); + if (index == invalid_arg_index) on_error("named argument is not found"); + return context_.check_arg_id(index), index; +#else + (void)id; + on_error("compile-time checks for named arguments require C++20 support"); + return 0; +#endif + } + + FMT_CONSTEXPR void on_replacement_field(int, const Char*) {} + + FMT_CONSTEXPR auto on_format_specs(int id, const Char* begin, const Char*) + -> const Char* { + context_.advance_to(context_.begin() + (begin - &*context_.begin())); + // id >= 0 check is a workaround for gcc 10 bug (#2065). + return id >= 0 && id < num_args ? parse_funcs_[id](context_) : begin; + } + + FMT_CONSTEXPR void on_error(const char* message) { + context_.on_error(message); + } +}; + +// Reports a compile-time error if S is not a valid format string. +template <typename..., typename S, FMT_ENABLE_IF(!is_compile_string<S>::value)> +FMT_INLINE void check_format_string(const S&) { +#ifdef FMT_ENFORCE_COMPILE_STRING + static_assert(is_compile_string<S>::value, + "FMT_ENFORCE_COMPILE_STRING requires all format strings to use " + "FMT_STRING."); +#endif +} +template <typename... Args, typename S, + FMT_ENABLE_IF(is_compile_string<S>::value)> +void check_format_string(S format_str) { + FMT_CONSTEXPR auto s = basic_string_view<typename S::char_type>(format_str); + using checker = format_string_checker<typename S::char_type, error_handler, + remove_cvref_t<Args>...>; + FMT_CONSTEXPR bool invalid_format = + (parse_format_string<true>(s, checker(s, {})), true); + ignore_unused(invalid_format); +} + +template <typename Char> +void vformat_to( + buffer<Char>& buf, basic_string_view<Char> fmt, + basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args, + locale_ref loc = {}); + +FMT_API void vprint_mojibake(std::FILE*, string_view, format_args); +#ifndef _WIN32 +inline void vprint_mojibake(std::FILE*, string_view, format_args) {} +#endif +FMT_END_DETAIL_NAMESPACE + +// A formatter specialization for the core types corresponding to detail::type +// constants. +template <typename T, typename Char> +struct formatter<T, Char, + enable_if_t<detail::type_constant<T, Char>::value != + detail::type::custom_type>> { + private: + detail::dynamic_format_specs<Char> specs_; + + public: + // Parses format specifiers stopping either at the end of the range or at the + // terminating '}'. + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + auto begin = ctx.begin(), end = ctx.end(); + if (begin == end) return begin; + using handler_type = detail::dynamic_specs_handler<ParseContext>; + auto type = detail::type_constant<T, Char>::value; + auto checker = + detail::specs_checker<handler_type>(handler_type(specs_, ctx), type); + auto it = detail::parse_format_specs(begin, end, checker); + auto eh = ctx.error_handler(); + switch (type) { + case detail::type::none_type: + FMT_ASSERT(false, "invalid argument type"); + break; + case detail::type::bool_type: + if (specs_.type == presentation_type::none || + specs_.type == presentation_type::string) { + break; + } + FMT_FALLTHROUGH; + case detail::type::int_type: + case detail::type::uint_type: + case detail::type::long_long_type: + case detail::type::ulong_long_type: + case detail::type::int128_type: + case detail::type::uint128_type: + detail::check_int_type_spec(specs_.type, eh); + break; + case detail::type::char_type: + detail::check_char_specs(specs_, eh); + break; + case detail::type::float_type: + if (detail::const_check(FMT_USE_FLOAT)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "float support disabled"); + break; + case detail::type::double_type: + if (detail::const_check(FMT_USE_DOUBLE)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "double support disabled"); + break; + case detail::type::long_double_type: + if (detail::const_check(FMT_USE_LONG_DOUBLE)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "long double support disabled"); + break; + case detail::type::cstring_type: + detail::check_cstring_type_spec(specs_.type, eh); + break; + case detail::type::string_type: + detail::check_string_type_spec(specs_.type, eh); + break; + case detail::type::pointer_type: + detail::check_pointer_type_spec(specs_.type, eh); + break; + case detail::type::custom_type: + // Custom format specifiers are checked in parse functions of + // formatter specializations. + break; + } + return it; + } + + template <typename FormatContext> + FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const + -> decltype(ctx.out()); +}; + +#define FMT_FORMAT_AS(Type, Base) \ + template <typename Char> \ + struct formatter<Type, Char> : formatter<Base, Char> { \ + template <typename FormatContext> \ + auto format(Type const& val, FormatContext& ctx) const \ + -> decltype(ctx.out()) { \ + return formatter<Base, Char>::format(static_cast<Base>(val), ctx); \ + } \ + } + +FMT_FORMAT_AS(signed char, int); +FMT_FORMAT_AS(unsigned char, unsigned); +FMT_FORMAT_AS(short, int); +FMT_FORMAT_AS(unsigned short, unsigned); +FMT_FORMAT_AS(long, long long); +FMT_FORMAT_AS(unsigned long, unsigned long long); +FMT_FORMAT_AS(Char*, const Char*); +FMT_FORMAT_AS(std::basic_string<Char>, basic_string_view<Char>); +FMT_FORMAT_AS(std::nullptr_t, const void*); +FMT_FORMAT_AS(detail::std_string_view<Char>, basic_string_view<Char>); + +template <typename Char> struct basic_runtime { basic_string_view<Char> str; }; + +/** A compile-time format string. */ +template <typename Char, typename... Args> class basic_format_string { + private: + basic_string_view<Char> str_; + + public: + template <typename S, + FMT_ENABLE_IF( + std::is_convertible<const S&, basic_string_view<Char>>::value)> + FMT_CONSTEVAL FMT_INLINE basic_format_string(const S& s) : str_(s) { + static_assert( + detail::count< + (std::is_base_of<detail::view, remove_reference_t<Args>>::value && + std::is_reference<Args>::value)...>() == 0, + "passing views as lvalues is disallowed"); +#ifdef FMT_HAS_CONSTEVAL + if constexpr (detail::count_named_args<Args...>() == + detail::count_statically_named_args<Args...>()) { + using checker = detail::format_string_checker<Char, detail::error_handler, + remove_cvref_t<Args>...>; + detail::parse_format_string<true>(str_, checker(s, {})); + } +#else + detail::check_format_string<Args...>(s); +#endif + } + basic_format_string(basic_runtime<Char> r) : str_(r.str) {} + + FMT_INLINE operator basic_string_view<Char>() const { return str_; } +}; + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +// Workaround broken conversion on older gcc. +template <typename...> using format_string = string_view; +inline auto runtime(string_view s) -> basic_string_view<char> { return s; } +#else +template <typename... Args> +using format_string = basic_format_string<char, type_identity_t<Args>...>; +/** + \rst + Creates a runtime format string. + + **Example**:: + + // Check format string at runtime instead of compile-time. + fmt::print(fmt::runtime("{:d}"), "I am not a number"); + \endrst + */ +inline auto runtime(string_view s) -> basic_runtime<char> { return {{s}}; } +#endif + +FMT_API auto vformat(string_view fmt, format_args args) -> std::string; + +/** + \rst + Formats ``args`` according to specifications in ``fmt`` and returns the result + as a string. + + **Example**:: + + #include <fmt/core.h> + std::string message = fmt::format("The answer is {}.", 42); + \endrst +*/ +template <typename... T> +FMT_NODISCARD FMT_INLINE auto format(format_string<T...> fmt, T&&... args) + -> std::string { + return vformat(fmt, fmt::make_format_args(args...)); +} + +/** Formats a string and writes the output to ``out``. */ +template <typename OutputIt, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)> +auto vformat_to(OutputIt out, string_view fmt, format_args args) -> OutputIt { + using detail::get_buffer; + auto&& buf = get_buffer<char>(out); + detail::vformat_to(buf, fmt, args, {}); + return detail::get_iterator(buf); +} + +/** + \rst + Formats ``args`` according to specifications in ``fmt``, writes the result to + the output iterator ``out`` and returns the iterator past the end of the output + range. `format_to` does not append a terminating null character. + + **Example**:: + + auto out = std::vector<char>(); + fmt::format_to(std::back_inserter(out), "{}", 42); + \endrst + */ +template <typename OutputIt, typename... T, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)> +FMT_INLINE auto format_to(OutputIt out, format_string<T...> fmt, T&&... args) + -> OutputIt { + return vformat_to(out, fmt, fmt::make_format_args(args...)); +} + +template <typename OutputIt> struct format_to_n_result { + /** Iterator past the end of the output range. */ + OutputIt out; + /** Total (not truncated) output size. */ + size_t size; +}; + +template <typename OutputIt, typename... T, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)> +auto vformat_to_n(OutputIt out, size_t n, string_view fmt, format_args args) + -> format_to_n_result<OutputIt> { + using traits = detail::fixed_buffer_traits; + auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n); + detail::vformat_to(buf, fmt, args, {}); + return {buf.out(), buf.count()}; +} + +/** + \rst + Formats ``args`` according to specifications in ``fmt``, writes up to ``n`` + characters of the result to the output iterator ``out`` and returns the total + (not truncated) output size and the iterator past the end of the output range. + `format_to_n` does not append a terminating null character. + \endrst + */ +template <typename OutputIt, typename... T, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)> +FMT_INLINE auto format_to_n(OutputIt out, size_t n, format_string<T...> fmt, + T&&... args) -> format_to_n_result<OutputIt> { + return vformat_to_n(out, n, fmt, fmt::make_format_args(args...)); +} + +/** Returns the number of chars in the output of ``format(fmt, args...)``. */ +template <typename... T> +FMT_NODISCARD FMT_INLINE auto formatted_size(format_string<T...> fmt, + T&&... args) -> size_t { + auto buf = detail::counting_buffer<>(); + detail::vformat_to(buf, string_view(fmt), fmt::make_format_args(args...), {}); + return buf.count(); +} + +FMT_API void vprint(string_view fmt, format_args args); +FMT_API void vprint(std::FILE* f, string_view fmt, format_args args); + +/** + \rst + Formats ``args`` according to specifications in ``fmt`` and writes the output + to ``stdout``. + + **Example**:: + + fmt::print("Elapsed time: {0:.2f} seconds", 1.23); + \endrst + */ +template <typename... T> +FMT_INLINE void print(format_string<T...> fmt, T&&... args) { + const auto& vargs = fmt::make_format_args(args...); + return detail::is_utf8() ? vprint(fmt, vargs) + : detail::vprint_mojibake(stdout, fmt, vargs); +} + +/** + \rst + Formats ``args`` according to specifications in ``fmt`` and writes the + output to the file ``f``. + + **Example**:: + + fmt::print(stderr, "Don't {}!", "panic"); + \endrst + */ +template <typename... T> +FMT_INLINE void print(std::FILE* f, format_string<T...> fmt, T&&... args) { + const auto& vargs = fmt::make_format_args(args...); + return detail::is_utf8() ? vprint(f, fmt, vargs) + : detail::vprint_mojibake(f, fmt, vargs); +} + +FMT_MODULE_EXPORT_END +FMT_GCC_PRAGMA("GCC pop_options") +FMT_END_NAMESPACE + +#ifdef FMT_HEADER_ONLY +# include "format.h" +#endif +#endif // FMT_CORE_H_ diff --git a/src/fmtlib/fmt/format-inl.h b/src/fmtlib/fmt/format-inl.h new file mode 100644 index 0000000..f44df01 --- /dev/null +++ b/src/fmtlib/fmt/format-inl.h @@ -0,0 +1,1733 @@ +// Formatting library for C++ - implementation +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_FORMAT_INL_H_ +#define FMT_FORMAT_INL_H_ + +#include <algorithm> +#include <cctype> +#include <cerrno> // errno +#include <climits> +#include <cmath> +#include <cstdarg> +#include <cstring> // std::memmove +#include <cwchar> +#include <exception> + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +# include <locale> +#endif + +#ifdef _WIN32 +# include <io.h> // _isatty +#endif + +#include "format.h" + +FMT_BEGIN_NAMESPACE +namespace detail { + +FMT_FUNC void assert_fail(const char* file, int line, const char* message) { + // Use unchecked std::fprintf to avoid triggering another assertion when + // writing to stderr fails + std::fprintf(stderr, "%s:%d: assertion failed: %s", file, line, message); + // Chosen instead of std::abort to satisfy Clang in CUDA mode during device + // code pass. + std::terminate(); +} + +FMT_FUNC void throw_format_error(const char* message) { + FMT_THROW(format_error(message)); +} + +FMT_FUNC void format_error_code(detail::buffer<char>& out, int error_code, + string_view message) noexcept { + // Report error code making sure that the output fits into + // inline_buffer_size to avoid dynamic memory allocation and potential + // bad_alloc. + out.try_resize(0); + static const char SEP[] = ": "; + static const char ERROR_STR[] = "error "; + // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. + size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; + auto abs_value = static_cast<uint32_or_64_or_128_t<int>>(error_code); + if (detail::is_negative(error_code)) { + abs_value = 0 - abs_value; + ++error_code_size; + } + error_code_size += detail::to_unsigned(detail::count_digits(abs_value)); + auto it = buffer_appender<char>(out); + if (message.size() <= inline_buffer_size - error_code_size) + format_to(it, FMT_STRING("{}{}"), message, SEP); + format_to(it, FMT_STRING("{}{}"), ERROR_STR, error_code); + FMT_ASSERT(out.size() <= inline_buffer_size, ""); +} + +FMT_FUNC void report_error(format_func func, int error_code, + const char* message) noexcept { + memory_buffer full_message; + func(full_message, error_code, message); + // Don't use fwrite_fully because the latter may throw. + if (std::fwrite(full_message.data(), full_message.size(), 1, stderr) > 0) + std::fputc('\n', stderr); +} + +// A wrapper around fwrite that throws on error. +inline void fwrite_fully(const void* ptr, size_t size, size_t count, + FILE* stream) { + size_t written = std::fwrite(ptr, size, count, stream); + if (written < count) + FMT_THROW(system_error(errno, FMT_STRING("cannot write to file"))); +} + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +template <typename Locale> +locale_ref::locale_ref(const Locale& loc) : locale_(&loc) { + static_assert(std::is_same<Locale, std::locale>::value, ""); +} + +template <typename Locale> Locale locale_ref::get() const { + static_assert(std::is_same<Locale, std::locale>::value, ""); + return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale(); +} + +template <typename Char> +FMT_FUNC auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result<Char> { + auto& facet = std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()); + auto grouping = facet.grouping(); + auto thousands_sep = grouping.empty() ? Char() : facet.thousands_sep(); + return {std::move(grouping), thousands_sep}; +} +template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref loc) { + return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()) + .decimal_point(); +} +#else +template <typename Char> +FMT_FUNC auto thousands_sep_impl(locale_ref) -> thousands_sep_result<Char> { + return {"\03", FMT_STATIC_THOUSANDS_SEPARATOR}; +} +template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref) { + return '.'; +} +#endif +} // namespace detail + +#if !FMT_MSC_VERSION +FMT_API FMT_FUNC format_error::~format_error() noexcept = default; +#endif + +FMT_FUNC std::system_error vsystem_error(int error_code, string_view format_str, + format_args args) { + auto ec = std::error_code(error_code, std::generic_category()); + return std::system_error(ec, vformat(format_str, args)); +} + +namespace detail { + +template <typename F> inline bool operator==(basic_fp<F> x, basic_fp<F> y) { + return x.f == y.f && x.e == y.e; +} + +// Compilers should be able to optimize this into the ror instruction. +FMT_CONSTEXPR inline uint32_t rotr(uint32_t n, uint32_t r) noexcept { + r &= 31; + return (n >> r) | (n << (32 - r)); +} +FMT_CONSTEXPR inline uint64_t rotr(uint64_t n, uint32_t r) noexcept { + r &= 63; + return (n >> r) | (n << (64 - r)); +} + +// Computes 128-bit result of multiplication of two 64-bit unsigned integers. +inline uint128_fallback umul128(uint64_t x, uint64_t y) noexcept { +#if FMT_USE_INT128 + auto p = static_cast<uint128_opt>(x) * static_cast<uint128_opt>(y); + return {static_cast<uint64_t>(p >> 64), static_cast<uint64_t>(p)}; +#elif defined(_MSC_VER) && defined(_M_X64) + auto result = uint128_fallback(); + result.lo_ = _umul128(x, y, &result.hi_); + return result; +#else + const uint64_t mask = static_cast<uint64_t>(max_value<uint32_t>()); + + uint64_t a = x >> 32; + uint64_t b = x & mask; + uint64_t c = y >> 32; + uint64_t d = y & mask; + + uint64_t ac = a * c; + uint64_t bc = b * c; + uint64_t ad = a * d; + uint64_t bd = b * d; + + uint64_t intermediate = (bd >> 32) + (ad & mask) + (bc & mask); + + return {ac + (intermediate >> 32) + (ad >> 32) + (bc >> 32), + (intermediate << 32) + (bd & mask)}; +#endif +} + +// Implementation of Dragonbox algorithm: https://github.com/jk-jeon/dragonbox. +namespace dragonbox { +// Computes upper 64 bits of multiplication of two 64-bit unsigned integers. +inline uint64_t umul128_upper64(uint64_t x, uint64_t y) noexcept { +#if FMT_USE_INT128 + auto p = static_cast<uint128_opt>(x) * static_cast<uint128_opt>(y); + return static_cast<uint64_t>(p >> 64); +#elif defined(_MSC_VER) && defined(_M_X64) + return __umulh(x, y); +#else + return umul128(x, y).high(); +#endif +} + +// Computes upper 128 bits of multiplication of a 64-bit unsigned integer and a +// 128-bit unsigned integer. +inline uint128_fallback umul192_upper128(uint64_t x, + uint128_fallback y) noexcept { + uint128_fallback r = umul128(x, y.high()); + r += umul128_upper64(x, y.low()); + return r; +} + +// Computes upper 64 bits of multiplication of a 32-bit unsigned integer and a +// 64-bit unsigned integer. +inline uint64_t umul96_upper64(uint32_t x, uint64_t y) noexcept { + return umul128_upper64(static_cast<uint64_t>(x) << 32, y); +} + +// Computes lower 128 bits of multiplication of a 64-bit unsigned integer and a +// 128-bit unsigned integer. +inline uint128_fallback umul192_lower128(uint64_t x, + uint128_fallback y) noexcept { + uint64_t high = x * y.high(); + uint128_fallback high_low = umul128(x, y.low()); + return {high + high_low.high(), high_low.low()}; +} + +// Computes lower 64 bits of multiplication of a 32-bit unsigned integer and a +// 64-bit unsigned integer. +inline uint64_t umul96_lower64(uint32_t x, uint64_t y) noexcept { + return x * y; +} + +// Computes floor(log10(pow(2, e))) for e in [-2620, 2620] using the method from +// https://fmt.dev/papers/Dragonbox.pdf#page=28, section 6.1. +inline int floor_log10_pow2(int e) noexcept { + FMT_ASSERT(e <= 2620 && e >= -2620, "too large exponent"); + static_assert((-1 >> 1) == -1, "right shift is not arithmetic"); + return (e * 315653) >> 20; +} + +// Various fast log computations. +inline int floor_log2_pow10(int e) noexcept { + FMT_ASSERT(e <= 1233 && e >= -1233, "too large exponent"); + return (e * 1741647) >> 19; +} +inline int floor_log10_pow2_minus_log10_4_over_3(int e) noexcept { + FMT_ASSERT(e <= 2936 && e >= -2985, "too large exponent"); + return (e * 631305 - 261663) >> 21; +} + +static constexpr struct { + uint32_t divisor; + int shift_amount; +} div_small_pow10_infos[] = {{10, 16}, {100, 16}}; + +// Replaces n by floor(n / pow(10, N)) returning true if and only if n is +// divisible by pow(10, N). +// Precondition: n <= pow(10, N + 1). +template <int N> +bool check_divisibility_and_divide_by_pow10(uint32_t& n) noexcept { + // The numbers below are chosen such that: + // 1. floor(n/d) = floor(nm / 2^k) where d=10 or d=100, + // 2. nm mod 2^k < m if and only if n is divisible by d, + // where m is magic_number, k is shift_amount + // and d is divisor. + // + // Item 1 is a common technique of replacing division by a constant with + // multiplication, see e.g. "Division by Invariant Integers Using + // Multiplication" by Granlund and Montgomery (1994). magic_number (m) is set + // to ceil(2^k/d) for large enough k. + // The idea for item 2 originates from Schubfach. + constexpr auto info = div_small_pow10_infos[N - 1]; + FMT_ASSERT(n <= info.divisor * 10, "n is too large"); + constexpr uint32_t magic_number = + (1u << info.shift_amount) / info.divisor + 1; + n *= magic_number; + const uint32_t comparison_mask = (1u << info.shift_amount) - 1; + bool result = (n & comparison_mask) < magic_number; + n >>= info.shift_amount; + return result; +} + +// Computes floor(n / pow(10, N)) for small n and N. +// Precondition: n <= pow(10, N + 1). +template <int N> uint32_t small_division_by_pow10(uint32_t n) noexcept { + constexpr auto info = div_small_pow10_infos[N - 1]; + FMT_ASSERT(n <= info.divisor * 10, "n is too large"); + constexpr uint32_t magic_number = + (1u << info.shift_amount) / info.divisor + 1; + return (n * magic_number) >> info.shift_amount; +} + +// Computes floor(n / 10^(kappa + 1)) (float) +inline uint32_t divide_by_10_to_kappa_plus_1(uint32_t n) noexcept { + // 1374389535 = ceil(2^37/100) + return static_cast<uint32_t>((static_cast<uint64_t>(n) * 1374389535) >> 37); +} +// Computes floor(n / 10^(kappa + 1)) (double) +inline uint64_t divide_by_10_to_kappa_plus_1(uint64_t n) noexcept { + // 2361183241434822607 = ceil(2^(64+7)/1000) + return umul128_upper64(n, 2361183241434822607ull) >> 7; +} + +// Various subroutines using pow10 cache +template <class T> struct cache_accessor; + +template <> struct cache_accessor<float> { + using carrier_uint = float_info<float>::carrier_uint; + using cache_entry_type = uint64_t; + + static uint64_t get_cached_power(int k) noexcept { + FMT_ASSERT(k >= float_info<float>::min_k && k <= float_info<float>::max_k, + "k is out of range"); + static constexpr const uint64_t pow10_significands[] = { + 0x81ceb32c4b43fcf5, 0xa2425ff75e14fc32, 0xcad2f7f5359a3b3f, + 0xfd87b5f28300ca0e, 0x9e74d1b791e07e49, 0xc612062576589ddb, + 0xf79687aed3eec552, 0x9abe14cd44753b53, 0xc16d9a0095928a28, + 0xf1c90080baf72cb2, 0x971da05074da7bef, 0xbce5086492111aeb, + 0xec1e4a7db69561a6, 0x9392ee8e921d5d08, 0xb877aa3236a4b44a, + 0xe69594bec44de15c, 0x901d7cf73ab0acda, 0xb424dc35095cd810, + 0xe12e13424bb40e14, 0x8cbccc096f5088cc, 0xafebff0bcb24aaff, + 0xdbe6fecebdedd5bf, 0x89705f4136b4a598, 0xabcc77118461cefd, + 0xd6bf94d5e57a42bd, 0x8637bd05af6c69b6, 0xa7c5ac471b478424, + 0xd1b71758e219652c, 0x83126e978d4fdf3c, 0xa3d70a3d70a3d70b, + 0xcccccccccccccccd, 0x8000000000000000, 0xa000000000000000, + 0xc800000000000000, 0xfa00000000000000, 0x9c40000000000000, + 0xc350000000000000, 0xf424000000000000, 0x9896800000000000, + 0xbebc200000000000, 0xee6b280000000000, 0x9502f90000000000, + 0xba43b74000000000, 0xe8d4a51000000000, 0x9184e72a00000000, + 0xb5e620f480000000, 0xe35fa931a0000000, 0x8e1bc9bf04000000, + 0xb1a2bc2ec5000000, 0xde0b6b3a76400000, 0x8ac7230489e80000, + 0xad78ebc5ac620000, 0xd8d726b7177a8000, 0x878678326eac9000, + 0xa968163f0a57b400, 0xd3c21bcecceda100, 0x84595161401484a0, + 0xa56fa5b99019a5c8, 0xcecb8f27f4200f3a, 0x813f3978f8940985, + 0xa18f07d736b90be6, 0xc9f2c9cd04674edf, 0xfc6f7c4045812297, + 0x9dc5ada82b70b59e, 0xc5371912364ce306, 0xf684df56c3e01bc7, + 0x9a130b963a6c115d, 0xc097ce7bc90715b4, 0xf0bdc21abb48db21, + 0x96769950b50d88f5, 0xbc143fa4e250eb32, 0xeb194f8e1ae525fe, + 0x92efd1b8d0cf37bf, 0xb7abc627050305ae, 0xe596b7b0c643c71a, + 0x8f7e32ce7bea5c70, 0xb35dbf821ae4f38c, 0xe0352f62a19e306f}; + return pow10_significands[k - float_info<float>::min_k]; + } + + struct compute_mul_result { + carrier_uint result; + bool is_integer; + }; + struct compute_mul_parity_result { + bool parity; + bool is_integer; + }; + + static compute_mul_result compute_mul( + carrier_uint u, const cache_entry_type& cache) noexcept { + auto r = umul96_upper64(u, cache); + return {static_cast<carrier_uint>(r >> 32), + static_cast<carrier_uint>(r) == 0}; + } + + static uint32_t compute_delta(const cache_entry_type& cache, + int beta) noexcept { + return static_cast<uint32_t>(cache >> (64 - 1 - beta)); + } + + static compute_mul_parity_result compute_mul_parity( + carrier_uint two_f, const cache_entry_type& cache, int beta) noexcept { + FMT_ASSERT(beta >= 1, ""); + FMT_ASSERT(beta < 64, ""); + + auto r = umul96_lower64(two_f, cache); + return {((r >> (64 - beta)) & 1) != 0, + static_cast<uint32_t>(r >> (32 - beta)) == 0}; + } + + static carrier_uint compute_left_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept { + return static_cast<carrier_uint>( + (cache - (cache >> (num_significand_bits<float>() + 2))) >> + (64 - num_significand_bits<float>() - 1 - beta)); + } + + static carrier_uint compute_right_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept { + return static_cast<carrier_uint>( + (cache + (cache >> (num_significand_bits<float>() + 1))) >> + (64 - num_significand_bits<float>() - 1 - beta)); + } + + static carrier_uint compute_round_up_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept { + return (static_cast<carrier_uint>( + cache >> (64 - num_significand_bits<float>() - 2 - beta)) + + 1) / + 2; + } +}; + +template <> struct cache_accessor<double> { + using carrier_uint = float_info<double>::carrier_uint; + using cache_entry_type = uint128_fallback; + + static uint128_fallback get_cached_power(int k) noexcept { + FMT_ASSERT(k >= float_info<double>::min_k && k <= float_info<double>::max_k, + "k is out of range"); + + static constexpr const uint128_fallback pow10_significands[] = { +#if FMT_USE_FULL_CACHE_DRAGONBOX + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0x9faacf3df73609b1, 0x77b191618c54e9ad}, + {0xc795830d75038c1d, 0xd59df5b9ef6a2418}, + {0xf97ae3d0d2446f25, 0x4b0573286b44ad1e}, + {0x9becce62836ac577, 0x4ee367f9430aec33}, + {0xc2e801fb244576d5, 0x229c41f793cda740}, + {0xf3a20279ed56d48a, 0x6b43527578c11110}, + {0x9845418c345644d6, 0x830a13896b78aaaa}, + {0xbe5691ef416bd60c, 0x23cc986bc656d554}, + {0xedec366b11c6cb8f, 0x2cbfbe86b7ec8aa9}, + {0x94b3a202eb1c3f39, 0x7bf7d71432f3d6aa}, + {0xb9e08a83a5e34f07, 0xdaf5ccd93fb0cc54}, + {0xe858ad248f5c22c9, 0xd1b3400f8f9cff69}, + {0x91376c36d99995be, 0x23100809b9c21fa2}, + {0xb58547448ffffb2d, 0xabd40a0c2832a78b}, + {0xe2e69915b3fff9f9, 0x16c90c8f323f516d}, + {0x8dd01fad907ffc3b, 0xae3da7d97f6792e4}, + {0xb1442798f49ffb4a, 0x99cd11cfdf41779d}, + {0xdd95317f31c7fa1d, 0x40405643d711d584}, + {0x8a7d3eef7f1cfc52, 0x482835ea666b2573}, + {0xad1c8eab5ee43b66, 0xda3243650005eed0}, + {0xd863b256369d4a40, 0x90bed43e40076a83}, + {0x873e4f75e2224e68, 0x5a7744a6e804a292}, + {0xa90de3535aaae202, 0x711515d0a205cb37}, + {0xd3515c2831559a83, 0x0d5a5b44ca873e04}, + {0x8412d9991ed58091, 0xe858790afe9486c3}, + {0xa5178fff668ae0b6, 0x626e974dbe39a873}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0x80fa687f881c7f8e, 0x7ce66634bc9d0b9a}, + {0xa139029f6a239f72, 0x1c1fffc1ebc44e81}, + {0xc987434744ac874e, 0xa327ffb266b56221}, + {0xfbe9141915d7a922, 0x4bf1ff9f0062baa9}, + {0x9d71ac8fada6c9b5, 0x6f773fc3603db4aa}, + {0xc4ce17b399107c22, 0xcb550fb4384d21d4}, + {0xf6019da07f549b2b, 0x7e2a53a146606a49}, + {0x99c102844f94e0fb, 0x2eda7444cbfc426e}, + {0xc0314325637a1939, 0xfa911155fefb5309}, + {0xf03d93eebc589f88, 0x793555ab7eba27cb}, + {0x96267c7535b763b5, 0x4bc1558b2f3458df}, + {0xbbb01b9283253ca2, 0x9eb1aaedfb016f17}, + {0xea9c227723ee8bcb, 0x465e15a979c1cadd}, + {0x92a1958a7675175f, 0x0bfacd89ec191eca}, + {0xb749faed14125d36, 0xcef980ec671f667c}, + {0xe51c79a85916f484, 0x82b7e12780e7401b}, + {0x8f31cc0937ae58d2, 0xd1b2ecb8b0908811}, + {0xb2fe3f0b8599ef07, 0x861fa7e6dcb4aa16}, + {0xdfbdcece67006ac9, 0x67a791e093e1d49b}, + {0x8bd6a141006042bd, 0xe0c8bb2c5c6d24e1}, + {0xaecc49914078536d, 0x58fae9f773886e19}, + {0xda7f5bf590966848, 0xaf39a475506a899f}, + {0x888f99797a5e012d, 0x6d8406c952429604}, + {0xaab37fd7d8f58178, 0xc8e5087ba6d33b84}, + {0xd5605fcdcf32e1d6, 0xfb1e4a9a90880a65}, + {0x855c3be0a17fcd26, 0x5cf2eea09a550680}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0xd0601d8efc57b08b, 0xf13b94daf124da27}, + {0x823c12795db6ce57, 0x76c53d08d6b70859}, + {0xa2cb1717b52481ed, 0x54768c4b0c64ca6f}, + {0xcb7ddcdda26da268, 0xa9942f5dcf7dfd0a}, + {0xfe5d54150b090b02, 0xd3f93b35435d7c4d}, + {0x9efa548d26e5a6e1, 0xc47bc5014a1a6db0}, + {0xc6b8e9b0709f109a, 0x359ab6419ca1091c}, + {0xf867241c8cc6d4c0, 0xc30163d203c94b63}, + {0x9b407691d7fc44f8, 0x79e0de63425dcf1e}, + {0xc21094364dfb5636, 0x985915fc12f542e5}, + {0xf294b943e17a2bc4, 0x3e6f5b7b17b2939e}, + {0x979cf3ca6cec5b5a, 0xa705992ceecf9c43}, + {0xbd8430bd08277231, 0x50c6ff782a838354}, + {0xece53cec4a314ebd, 0xa4f8bf5635246429}, + {0x940f4613ae5ed136, 0x871b7795e136be9a}, + {0xb913179899f68584, 0x28e2557b59846e40}, + {0xe757dd7ec07426e5, 0x331aeada2fe589d0}, + {0x9096ea6f3848984f, 0x3ff0d2c85def7622}, + {0xb4bca50b065abe63, 0x0fed077a756b53aa}, + {0xe1ebce4dc7f16dfb, 0xd3e8495912c62895}, + {0x8d3360f09cf6e4bd, 0x64712dd7abbbd95d}, + {0xb080392cc4349dec, 0xbd8d794d96aacfb4}, + {0xdca04777f541c567, 0xecf0d7a0fc5583a1}, + {0x89e42caaf9491b60, 0xf41686c49db57245}, + {0xac5d37d5b79b6239, 0x311c2875c522ced6}, + {0xd77485cb25823ac7, 0x7d633293366b828c}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xa8530886b54dbdeb, 0xd9f57f830283fdfd}, + {0xd267caa862a12d66, 0xd072df63c324fd7c}, + {0x8380dea93da4bc60, 0x4247cb9e59f71e6e}, + {0xa46116538d0deb78, 0x52d9be85f074e609}, + {0xcd795be870516656, 0x67902e276c921f8c}, + {0x806bd9714632dff6, 0x00ba1cd8a3db53b7}, + {0xa086cfcd97bf97f3, 0x80e8a40eccd228a5}, + {0xc8a883c0fdaf7df0, 0x6122cd128006b2ce}, + {0xfad2a4b13d1b5d6c, 0x796b805720085f82}, + {0x9cc3a6eec6311a63, 0xcbe3303674053bb1}, + {0xc3f490aa77bd60fc, 0xbedbfc4411068a9d}, + {0xf4f1b4d515acb93b, 0xee92fb5515482d45}, + {0x991711052d8bf3c5, 0x751bdd152d4d1c4b}, + {0xbf5cd54678eef0b6, 0xd262d45a78a0635e}, + {0xef340a98172aace4, 0x86fb897116c87c35}, + {0x9580869f0e7aac0e, 0xd45d35e6ae3d4da1}, + {0xbae0a846d2195712, 0x8974836059cca10a}, + {0xe998d258869facd7, 0x2bd1a438703fc94c}, + {0x91ff83775423cc06, 0x7b6306a34627ddd0}, + {0xb67f6455292cbf08, 0x1a3bc84c17b1d543}, + {0xe41f3d6a7377eeca, 0x20caba5f1d9e4a94}, + {0x8e938662882af53e, 0x547eb47b7282ee9d}, + {0xb23867fb2a35b28d, 0xe99e619a4f23aa44}, + {0xdec681f9f4c31f31, 0x6405fa00e2ec94d5}, + {0x8b3c113c38f9f37e, 0xde83bc408dd3dd05}, + {0xae0b158b4738705e, 0x9624ab50b148d446}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0x87f8a8d4cfa417c9, 0xe54ca5d70a80e5d7}, + {0xa9f6d30a038d1dbc, 0x5e9fcf4ccd211f4d}, + {0xd47487cc8470652b, 0x7647c32000696720}, + {0x84c8d4dfd2c63f3b, 0x29ecd9f40041e074}, + {0xa5fb0a17c777cf09, 0xf468107100525891}, + {0xcf79cc9db955c2cc, 0x7182148d4066eeb5}, + {0x81ac1fe293d599bf, 0xc6f14cd848405531}, + {0xa21727db38cb002f, 0xb8ada00e5a506a7d}, + {0xca9cf1d206fdc03b, 0xa6d90811f0e4851d}, + {0xfd442e4688bd304a, 0x908f4a166d1da664}, + {0x9e4a9cec15763e2e, 0x9a598e4e043287ff}, + {0xc5dd44271ad3cdba, 0x40eff1e1853f29fe}, + {0xf7549530e188c128, 0xd12bee59e68ef47d}, + {0x9a94dd3e8cf578b9, 0x82bb74f8301958cf}, + {0xc13a148e3032d6e7, 0xe36a52363c1faf02}, + {0xf18899b1bc3f8ca1, 0xdc44e6c3cb279ac2}, + {0x96f5600f15a7b7e5, 0x29ab103a5ef8c0ba}, + {0xbcb2b812db11a5de, 0x7415d448f6b6f0e8}, + {0xebdf661791d60f56, 0x111b495b3464ad22}, + {0x936b9fcebb25c995, 0xcab10dd900beec35}, + {0xb84687c269ef3bfb, 0x3d5d514f40eea743}, + {0xe65829b3046b0afa, 0x0cb4a5a3112a5113}, + {0x8ff71a0fe2c2e6dc, 0x47f0e785eaba72ac}, + {0xb3f4e093db73a093, 0x59ed216765690f57}, + {0xe0f218b8d25088b8, 0x306869c13ec3532d}, + {0x8c974f7383725573, 0x1e414218c73a13fc}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0xdbac6c247d62a583, 0xdf45f746b74abf3a}, + {0x894bc396ce5da772, 0x6b8bba8c328eb784}, + {0xab9eb47c81f5114f, 0x066ea92f3f326565}, + {0xd686619ba27255a2, 0xc80a537b0efefebe}, + {0x8613fd0145877585, 0xbd06742ce95f5f37}, + {0xa798fc4196e952e7, 0x2c48113823b73705}, + {0xd17f3b51fca3a7a0, 0xf75a15862ca504c6}, + {0x82ef85133de648c4, 0x9a984d73dbe722fc}, + {0xa3ab66580d5fdaf5, 0xc13e60d0d2e0ebbb}, + {0xcc963fee10b7d1b3, 0x318df905079926a9}, + {0xffbbcfe994e5c61f, 0xfdf17746497f7053}, + {0x9fd561f1fd0f9bd3, 0xfeb6ea8bedefa634}, + {0xc7caba6e7c5382c8, 0xfe64a52ee96b8fc1}, + {0xf9bd690a1b68637b, 0x3dfdce7aa3c673b1}, + {0x9c1661a651213e2d, 0x06bea10ca65c084f}, + {0xc31bfa0fe5698db8, 0x486e494fcff30a63}, + {0xf3e2f893dec3f126, 0x5a89dba3c3efccfb}, + {0x986ddb5c6b3a76b7, 0xf89629465a75e01d}, + {0xbe89523386091465, 0xf6bbb397f1135824}, + {0xee2ba6c0678b597f, 0x746aa07ded582e2d}, + {0x94db483840b717ef, 0xa8c2a44eb4571cdd}, + {0xba121a4650e4ddeb, 0x92f34d62616ce414}, + {0xe896a0d7e51e1566, 0x77b020baf9c81d18}, + {0x915e2486ef32cd60, 0x0ace1474dc1d122f}, + {0xb5b5ada8aaff80b8, 0x0d819992132456bb}, + {0xe3231912d5bf60e6, 0x10e1fff697ed6c6a}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xb1736b96b6fd83b3, 0xbd308ff8a6b17cb3}, + {0xddd0467c64bce4a0, 0xac7cb3f6d05ddbdf}, + {0x8aa22c0dbef60ee4, 0x6bcdf07a423aa96c}, + {0xad4ab7112eb3929d, 0x86c16c98d2c953c7}, + {0xd89d64d57a607744, 0xe871c7bf077ba8b8}, + {0x87625f056c7c4a8b, 0x11471cd764ad4973}, + {0xa93af6c6c79b5d2d, 0xd598e40d3dd89bd0}, + {0xd389b47879823479, 0x4aff1d108d4ec2c4}, + {0x843610cb4bf160cb, 0xcedf722a585139bb}, + {0xa54394fe1eedb8fe, 0xc2974eb4ee658829}, + {0xce947a3da6a9273e, 0x733d226229feea33}, + {0x811ccc668829b887, 0x0806357d5a3f5260}, + {0xa163ff802a3426a8, 0xca07c2dcb0cf26f8}, + {0xc9bcff6034c13052, 0xfc89b393dd02f0b6}, + {0xfc2c3f3841f17c67, 0xbbac2078d443ace3}, + {0x9d9ba7832936edc0, 0xd54b944b84aa4c0e}, + {0xc5029163f384a931, 0x0a9e795e65d4df12}, + {0xf64335bcf065d37d, 0x4d4617b5ff4a16d6}, + {0x99ea0196163fa42e, 0x504bced1bf8e4e46}, + {0xc06481fb9bcf8d39, 0xe45ec2862f71e1d7}, + {0xf07da27a82c37088, 0x5d767327bb4e5a4d}, + {0x964e858c91ba2655, 0x3a6a07f8d510f870}, + {0xbbe226efb628afea, 0x890489f70a55368c}, + {0xeadab0aba3b2dbe5, 0x2b45ac74ccea842f}, + {0x92c8ae6b464fc96f, 0x3b0b8bc90012929e}, + {0xb77ada0617e3bbcb, 0x09ce6ebb40173745}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0x8f57fa54c2a9eab6, 0x9fa946824a12232e}, + {0xb32df8e9f3546564, 0x47939822dc96abfa}, + {0xdff9772470297ebd, 0x59787e2b93bc56f8}, + {0x8bfbea76c619ef36, 0x57eb4edb3c55b65b}, + {0xaefae51477a06b03, 0xede622920b6b23f2}, + {0xdab99e59958885c4, 0xe95fab368e45ecee}, + {0x88b402f7fd75539b, 0x11dbcb0218ebb415}, + {0xaae103b5fcd2a881, 0xd652bdc29f26a11a}, + {0xd59944a37c0752a2, 0x4be76d3346f04960}, + {0x857fcae62d8493a5, 0x6f70a4400c562ddc}, + {0xa6dfbd9fb8e5b88e, 0xcb4ccd500f6bb953}, + {0xd097ad07a71f26b2, 0x7e2000a41346a7a8}, + {0x825ecc24c873782f, 0x8ed400668c0c28c9}, + {0xa2f67f2dfa90563b, 0x728900802f0f32fb}, + {0xcbb41ef979346bca, 0x4f2b40a03ad2ffba}, + {0xfea126b7d78186bc, 0xe2f610c84987bfa9}, + {0x9f24b832e6b0f436, 0x0dd9ca7d2df4d7ca}, + {0xc6ede63fa05d3143, 0x91503d1c79720dbc}, + {0xf8a95fcf88747d94, 0x75a44c6397ce912b}, + {0x9b69dbe1b548ce7c, 0xc986afbe3ee11abb}, + {0xc24452da229b021b, 0xfbe85badce996169}, + {0xf2d56790ab41c2a2, 0xfae27299423fb9c4}, + {0x97c560ba6b0919a5, 0xdccd879fc967d41b}, + {0xbdb6b8e905cb600f, 0x5400e987bbc1c921}, + {0xed246723473e3813, 0x290123e9aab23b69}, + {0x9436c0760c86e30b, 0xf9a0b6720aaf6522}, + {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, + {0xe7958cb87392c2c2, 0xb60b1d1230b20e05}, + {0x90bd77f3483bb9b9, 0xb1c6f22b5e6f48c3}, + {0xb4ecd5f01a4aa828, 0x1e38aeb6360b1af4}, + {0xe2280b6c20dd5232, 0x25c6da63c38de1b1}, + {0x8d590723948a535f, 0x579c487e5a38ad0f}, + {0xb0af48ec79ace837, 0x2d835a9df0c6d852}, + {0xdcdb1b2798182244, 0xf8e431456cf88e66}, + {0x8a08f0f8bf0f156b, 0x1b8e9ecb641b5900}, + {0xac8b2d36eed2dac5, 0xe272467e3d222f40}, + {0xd7adf884aa879177, 0x5b0ed81dcc6abb10}, + {0x86ccbb52ea94baea, 0x98e947129fc2b4ea}, + {0xa87fea27a539e9a5, 0x3f2398d747b36225}, + {0xd29fe4b18e88640e, 0x8eec7f0d19a03aae}, + {0x83a3eeeef9153e89, 0x1953cf68300424ad}, + {0xa48ceaaab75a8e2b, 0x5fa8c3423c052dd8}, + {0xcdb02555653131b6, 0x3792f412cb06794e}, + {0x808e17555f3ebf11, 0xe2bbd88bbee40bd1}, + {0xa0b19d2ab70e6ed6, 0x5b6aceaeae9d0ec5}, + {0xc8de047564d20a8b, 0xf245825a5a445276}, + {0xfb158592be068d2e, 0xeed6e2f0f0d56713}, + {0x9ced737bb6c4183d, 0x55464dd69685606c}, + {0xc428d05aa4751e4c, 0xaa97e14c3c26b887}, + {0xf53304714d9265df, 0xd53dd99f4b3066a9}, + {0x993fe2c6d07b7fab, 0xe546a8038efe402a}, + {0xbf8fdb78849a5f96, 0xde98520472bdd034}, + {0xef73d256a5c0f77c, 0x963e66858f6d4441}, + {0x95a8637627989aad, 0xdde7001379a44aa9}, + {0xbb127c53b17ec159, 0x5560c018580d5d53}, + {0xe9d71b689dde71af, 0xaab8f01e6e10b4a7}, + {0x9226712162ab070d, 0xcab3961304ca70e9}, + {0xb6b00d69bb55c8d1, 0x3d607b97c5fd0d23}, + {0xe45c10c42a2b3b05, 0x8cb89a7db77c506b}, + {0x8eb98a7a9a5b04e3, 0x77f3608e92adb243}, + {0xb267ed1940f1c61c, 0x55f038b237591ed4}, + {0xdf01e85f912e37a3, 0x6b6c46dec52f6689}, + {0x8b61313bbabce2c6, 0x2323ac4b3b3da016}, + {0xae397d8aa96c1b77, 0xabec975e0a0d081b}, + {0xd9c7dced53c72255, 0x96e7bd358c904a22}, + {0x881cea14545c7575, 0x7e50d64177da2e55}, + {0xaa242499697392d2, 0xdde50bd1d5d0b9ea}, + {0xd4ad2dbfc3d07787, 0x955e4ec64b44e865}, + {0x84ec3c97da624ab4, 0xbd5af13bef0b113f}, + {0xa6274bbdd0fadd61, 0xecb1ad8aeacdd58f}, + {0xcfb11ead453994ba, 0x67de18eda5814af3}, + {0x81ceb32c4b43fcf4, 0x80eacf948770ced8}, + {0xa2425ff75e14fc31, 0xa1258379a94d028e}, + {0xcad2f7f5359a3b3e, 0x096ee45813a04331}, + {0xfd87b5f28300ca0d, 0x8bca9d6e188853fd}, + {0x9e74d1b791e07e48, 0x775ea264cf55347e}, + {0xc612062576589dda, 0x95364afe032a819e}, + {0xf79687aed3eec551, 0x3a83ddbd83f52205}, + {0x9abe14cd44753b52, 0xc4926a9672793543}, + {0xc16d9a0095928a27, 0x75b7053c0f178294}, + {0xf1c90080baf72cb1, 0x5324c68b12dd6339}, + {0x971da05074da7bee, 0xd3f6fc16ebca5e04}, + {0xbce5086492111aea, 0x88f4bb1ca6bcf585}, + {0xec1e4a7db69561a5, 0x2b31e9e3d06c32e6}, + {0x9392ee8e921d5d07, 0x3aff322e62439fd0}, + {0xb877aa3236a4b449, 0x09befeb9fad487c3}, + {0xe69594bec44de15b, 0x4c2ebe687989a9b4}, + {0x901d7cf73ab0acd9, 0x0f9d37014bf60a11}, + {0xb424dc35095cd80f, 0x538484c19ef38c95}, + {0xe12e13424bb40e13, 0x2865a5f206b06fba}, + {0x8cbccc096f5088cb, 0xf93f87b7442e45d4}, + {0xafebff0bcb24aafe, 0xf78f69a51539d749}, + {0xdbe6fecebdedd5be, 0xb573440e5a884d1c}, + {0x89705f4136b4a597, 0x31680a88f8953031}, + {0xabcc77118461cefc, 0xfdc20d2b36ba7c3e}, + {0xd6bf94d5e57a42bc, 0x3d32907604691b4d}, + {0x8637bd05af6c69b5, 0xa63f9a49c2c1b110}, + {0xa7c5ac471b478423, 0x0fcf80dc33721d54}, + {0xd1b71758e219652b, 0xd3c36113404ea4a9}, + {0x83126e978d4fdf3b, 0x645a1cac083126ea}, + {0xa3d70a3d70a3d70a, 0x3d70a3d70a3d70a4}, + {0xcccccccccccccccc, 0xcccccccccccccccd}, + {0x8000000000000000, 0x0000000000000000}, + {0xa000000000000000, 0x0000000000000000}, + {0xc800000000000000, 0x0000000000000000}, + {0xfa00000000000000, 0x0000000000000000}, + {0x9c40000000000000, 0x0000000000000000}, + {0xc350000000000000, 0x0000000000000000}, + {0xf424000000000000, 0x0000000000000000}, + {0x9896800000000000, 0x0000000000000000}, + {0xbebc200000000000, 0x0000000000000000}, + {0xee6b280000000000, 0x0000000000000000}, + {0x9502f90000000000, 0x0000000000000000}, + {0xba43b74000000000, 0x0000000000000000}, + {0xe8d4a51000000000, 0x0000000000000000}, + {0x9184e72a00000000, 0x0000000000000000}, + {0xb5e620f480000000, 0x0000000000000000}, + {0xe35fa931a0000000, 0x0000000000000000}, + {0x8e1bc9bf04000000, 0x0000000000000000}, + {0xb1a2bc2ec5000000, 0x0000000000000000}, + {0xde0b6b3a76400000, 0x0000000000000000}, + {0x8ac7230489e80000, 0x0000000000000000}, + {0xad78ebc5ac620000, 0x0000000000000000}, + {0xd8d726b7177a8000, 0x0000000000000000}, + {0x878678326eac9000, 0x0000000000000000}, + {0xa968163f0a57b400, 0x0000000000000000}, + {0xd3c21bcecceda100, 0x0000000000000000}, + {0x84595161401484a0, 0x0000000000000000}, + {0xa56fa5b99019a5c8, 0x0000000000000000}, + {0xcecb8f27f4200f3a, 0x0000000000000000}, + {0x813f3978f8940984, 0x4000000000000000}, + {0xa18f07d736b90be5, 0x5000000000000000}, + {0xc9f2c9cd04674ede, 0xa400000000000000}, + {0xfc6f7c4045812296, 0x4d00000000000000}, + {0x9dc5ada82b70b59d, 0xf020000000000000}, + {0xc5371912364ce305, 0x6c28000000000000}, + {0xf684df56c3e01bc6, 0xc732000000000000}, + {0x9a130b963a6c115c, 0x3c7f400000000000}, + {0xc097ce7bc90715b3, 0x4b9f100000000000}, + {0xf0bdc21abb48db20, 0x1e86d40000000000}, + {0x96769950b50d88f4, 0x1314448000000000}, + {0xbc143fa4e250eb31, 0x17d955a000000000}, + {0xeb194f8e1ae525fd, 0x5dcfab0800000000}, + {0x92efd1b8d0cf37be, 0x5aa1cae500000000}, + {0xb7abc627050305ad, 0xf14a3d9e40000000}, + {0xe596b7b0c643c719, 0x6d9ccd05d0000000}, + {0x8f7e32ce7bea5c6f, 0xe4820023a2000000}, + {0xb35dbf821ae4f38b, 0xdda2802c8a800000}, + {0xe0352f62a19e306e, 0xd50b2037ad200000}, + {0x8c213d9da502de45, 0x4526f422cc340000}, + {0xaf298d050e4395d6, 0x9670b12b7f410000}, + {0xdaf3f04651d47b4c, 0x3c0cdd765f114000}, + {0x88d8762bf324cd0f, 0xa5880a69fb6ac800}, + {0xab0e93b6efee0053, 0x8eea0d047a457a00}, + {0xd5d238a4abe98068, 0x72a4904598d6d880}, + {0x85a36366eb71f041, 0x47a6da2b7f864750}, + {0xa70c3c40a64e6c51, 0x999090b65f67d924}, + {0xd0cf4b50cfe20765, 0xfff4b4e3f741cf6d}, + {0x82818f1281ed449f, 0xbff8f10e7a8921a5}, + {0xa321f2d7226895c7, 0xaff72d52192b6a0e}, + {0xcbea6f8ceb02bb39, 0x9bf4f8a69f764491}, + {0xfee50b7025c36a08, 0x02f236d04753d5b5}, + {0x9f4f2726179a2245, 0x01d762422c946591}, + {0xc722f0ef9d80aad6, 0x424d3ad2b7b97ef6}, + {0xf8ebad2b84e0d58b, 0xd2e0898765a7deb3}, + {0x9b934c3b330c8577, 0x63cc55f49f88eb30}, + {0xc2781f49ffcfa6d5, 0x3cbf6b71c76b25fc}, + {0xf316271c7fc3908a, 0x8bef464e3945ef7b}, + {0x97edd871cfda3a56, 0x97758bf0e3cbb5ad}, + {0xbde94e8e43d0c8ec, 0x3d52eeed1cbea318}, + {0xed63a231d4c4fb27, 0x4ca7aaa863ee4bde}, + {0x945e455f24fb1cf8, 0x8fe8caa93e74ef6b}, + {0xb975d6b6ee39e436, 0xb3e2fd538e122b45}, + {0xe7d34c64a9c85d44, 0x60dbbca87196b617}, + {0x90e40fbeea1d3a4a, 0xbc8955e946fe31ce}, + {0xb51d13aea4a488dd, 0x6babab6398bdbe42}, + {0xe264589a4dcdab14, 0xc696963c7eed2dd2}, + {0x8d7eb76070a08aec, 0xfc1e1de5cf543ca3}, + {0xb0de65388cc8ada8, 0x3b25a55f43294bcc}, + {0xdd15fe86affad912, 0x49ef0eb713f39ebf}, + {0x8a2dbf142dfcc7ab, 0x6e3569326c784338}, + {0xacb92ed9397bf996, 0x49c2c37f07965405}, + {0xd7e77a8f87daf7fb, 0xdc33745ec97be907}, + {0x86f0ac99b4e8dafd, 0x69a028bb3ded71a4}, + {0xa8acd7c0222311bc, 0xc40832ea0d68ce0d}, + {0xd2d80db02aabd62b, 0xf50a3fa490c30191}, + {0x83c7088e1aab65db, 0x792667c6da79e0fb}, + {0xa4b8cab1a1563f52, 0x577001b891185939}, + {0xcde6fd5e09abcf26, 0xed4c0226b55e6f87}, + {0x80b05e5ac60b6178, 0x544f8158315b05b5}, + {0xa0dc75f1778e39d6, 0x696361ae3db1c722}, + {0xc913936dd571c84c, 0x03bc3a19cd1e38ea}, + {0xfb5878494ace3a5f, 0x04ab48a04065c724}, + {0x9d174b2dcec0e47b, 0x62eb0d64283f9c77}, + {0xc45d1df942711d9a, 0x3ba5d0bd324f8395}, + {0xf5746577930d6500, 0xca8f44ec7ee3647a}, + {0x9968bf6abbe85f20, 0x7e998b13cf4e1ecc}, + {0xbfc2ef456ae276e8, 0x9e3fedd8c321a67f}, + {0xefb3ab16c59b14a2, 0xc5cfe94ef3ea101f}, + {0x95d04aee3b80ece5, 0xbba1f1d158724a13}, + {0xbb445da9ca61281f, 0x2a8a6e45ae8edc98}, + {0xea1575143cf97226, 0xf52d09d71a3293be}, + {0x924d692ca61be758, 0x593c2626705f9c57}, + {0xb6e0c377cfa2e12e, 0x6f8b2fb00c77836d}, + {0xe498f455c38b997a, 0x0b6dfb9c0f956448}, + {0x8edf98b59a373fec, 0x4724bd4189bd5ead}, + {0xb2977ee300c50fe7, 0x58edec91ec2cb658}, + {0xdf3d5e9bc0f653e1, 0x2f2967b66737e3ee}, + {0x8b865b215899f46c, 0xbd79e0d20082ee75}, + {0xae67f1e9aec07187, 0xecd8590680a3aa12}, + {0xda01ee641a708de9, 0xe80e6f4820cc9496}, + {0x884134fe908658b2, 0x3109058d147fdcde}, + {0xaa51823e34a7eede, 0xbd4b46f0599fd416}, + {0xd4e5e2cdc1d1ea96, 0x6c9e18ac7007c91b}, + {0x850fadc09923329e, 0x03e2cf6bc604ddb1}, + {0xa6539930bf6bff45, 0x84db8346b786151d}, + {0xcfe87f7cef46ff16, 0xe612641865679a64}, + {0x81f14fae158c5f6e, 0x4fcb7e8f3f60c07f}, + {0xa26da3999aef7749, 0xe3be5e330f38f09e}, + {0xcb090c8001ab551c, 0x5cadf5bfd3072cc6}, + {0xfdcb4fa002162a63, 0x73d9732fc7c8f7f7}, + {0x9e9f11c4014dda7e, 0x2867e7fddcdd9afb}, + {0xc646d63501a1511d, 0xb281e1fd541501b9}, + {0xf7d88bc24209a565, 0x1f225a7ca91a4227}, + {0x9ae757596946075f, 0x3375788de9b06959}, + {0xc1a12d2fc3978937, 0x0052d6b1641c83af}, + {0xf209787bb47d6b84, 0xc0678c5dbd23a49b}, + {0x9745eb4d50ce6332, 0xf840b7ba963646e1}, + {0xbd176620a501fbff, 0xb650e5a93bc3d899}, + {0xec5d3fa8ce427aff, 0xa3e51f138ab4cebf}, + {0x93ba47c980e98cdf, 0xc66f336c36b10138}, + {0xb8a8d9bbe123f017, 0xb80b0047445d4185}, + {0xe6d3102ad96cec1d, 0xa60dc059157491e6}, + {0x9043ea1ac7e41392, 0x87c89837ad68db30}, + {0xb454e4a179dd1877, 0x29babe4598c311fc}, + {0xe16a1dc9d8545e94, 0xf4296dd6fef3d67b}, + {0x8ce2529e2734bb1d, 0x1899e4a65f58660d}, + {0xb01ae745b101e9e4, 0x5ec05dcff72e7f90}, + {0xdc21a1171d42645d, 0x76707543f4fa1f74}, + {0x899504ae72497eba, 0x6a06494a791c53a9}, + {0xabfa45da0edbde69, 0x0487db9d17636893}, + {0xd6f8d7509292d603, 0x45a9d2845d3c42b7}, + {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b3}, + {0xa7f26836f282b732, 0x8e6cac7768d7141f}, + {0xd1ef0244af2364ff, 0x3207d795430cd927}, + {0x8335616aed761f1f, 0x7f44e6bd49e807b9}, + {0xa402b9c5a8d3a6e7, 0x5f16206c9c6209a7}, + {0xcd036837130890a1, 0x36dba887c37a8c10}, + {0x802221226be55a64, 0xc2494954da2c978a}, + {0xa02aa96b06deb0fd, 0xf2db9baa10b7bd6d}, + {0xc83553c5c8965d3d, 0x6f92829494e5acc8}, + {0xfa42a8b73abbf48c, 0xcb772339ba1f17fa}, + {0x9c69a97284b578d7, 0xff2a760414536efc}, + {0xc38413cf25e2d70d, 0xfef5138519684abb}, + {0xf46518c2ef5b8cd1, 0x7eb258665fc25d6a}, + {0x98bf2f79d5993802, 0xef2f773ffbd97a62}, + {0xbeeefb584aff8603, 0xaafb550ffacfd8fb}, + {0xeeaaba2e5dbf6784, 0x95ba2a53f983cf39}, + {0x952ab45cfa97a0b2, 0xdd945a747bf26184}, + {0xba756174393d88df, 0x94f971119aeef9e5}, + {0xe912b9d1478ceb17, 0x7a37cd5601aab85e}, + {0x91abb422ccb812ee, 0xac62e055c10ab33b}, + {0xb616a12b7fe617aa, 0x577b986b314d600a}, + {0xe39c49765fdf9d94, 0xed5a7e85fda0b80c}, + {0x8e41ade9fbebc27d, 0x14588f13be847308}, + {0xb1d219647ae6b31c, 0x596eb2d8ae258fc9}, + {0xde469fbd99a05fe3, 0x6fca5f8ed9aef3bc}, + {0x8aec23d680043bee, 0x25de7bb9480d5855}, + {0xada72ccc20054ae9, 0xaf561aa79a10ae6b}, + {0xd910f7ff28069da4, 0x1b2ba1518094da05}, + {0x87aa9aff79042286, 0x90fb44d2f05d0843}, + {0xa99541bf57452b28, 0x353a1607ac744a54}, + {0xd3fa922f2d1675f2, 0x42889b8997915ce9}, + {0x847c9b5d7c2e09b7, 0x69956135febada12}, + {0xa59bc234db398c25, 0x43fab9837e699096}, + {0xcf02b2c21207ef2e, 0x94f967e45e03f4bc}, + {0x8161afb94b44f57d, 0x1d1be0eebac278f6}, + {0xa1ba1ba79e1632dc, 0x6462d92a69731733}, + {0xca28a291859bbf93, 0x7d7b8f7503cfdcff}, + {0xfcb2cb35e702af78, 0x5cda735244c3d43f}, + {0x9defbf01b061adab, 0x3a0888136afa64a8}, + {0xc56baec21c7a1916, 0x088aaa1845b8fdd1}, + {0xf6c69a72a3989f5b, 0x8aad549e57273d46}, + {0x9a3c2087a63f6399, 0x36ac54e2f678864c}, + {0xc0cb28a98fcf3c7f, 0x84576a1bb416a7de}, + {0xf0fdf2d3f3c30b9f, 0x656d44a2a11c51d6}, + {0x969eb7c47859e743, 0x9f644ae5a4b1b326}, + {0xbc4665b596706114, 0x873d5d9f0dde1fef}, + {0xeb57ff22fc0c7959, 0xa90cb506d155a7eb}, + {0x9316ff75dd87cbd8, 0x09a7f12442d588f3}, + {0xb7dcbf5354e9bece, 0x0c11ed6d538aeb30}, + {0xe5d3ef282a242e81, 0x8f1668c8a86da5fb}, + {0x8fa475791a569d10, 0xf96e017d694487bd}, + {0xb38d92d760ec4455, 0x37c981dcc395a9ad}, + {0xe070f78d3927556a, 0x85bbe253f47b1418}, + {0x8c469ab843b89562, 0x93956d7478ccec8f}, + {0xaf58416654a6babb, 0x387ac8d1970027b3}, + {0xdb2e51bfe9d0696a, 0x06997b05fcc0319f}, + {0x88fcf317f22241e2, 0x441fece3bdf81f04}, + {0xab3c2fddeeaad25a, 0xd527e81cad7626c4}, + {0xd60b3bd56a5586f1, 0x8a71e223d8d3b075}, + {0x85c7056562757456, 0xf6872d5667844e4a}, + {0xa738c6bebb12d16c, 0xb428f8ac016561dc}, + {0xd106f86e69d785c7, 0xe13336d701beba53}, + {0x82a45b450226b39c, 0xecc0024661173474}, + {0xa34d721642b06084, 0x27f002d7f95d0191}, + {0xcc20ce9bd35c78a5, 0x31ec038df7b441f5}, + {0xff290242c83396ce, 0x7e67047175a15272}, + {0x9f79a169bd203e41, 0x0f0062c6e984d387}, + {0xc75809c42c684dd1, 0x52c07b78a3e60869}, + {0xf92e0c3537826145, 0xa7709a56ccdf8a83}, + {0x9bbcc7a142b17ccb, 0x88a66076400bb692}, + {0xc2abf989935ddbfe, 0x6acff893d00ea436}, + {0xf356f7ebf83552fe, 0x0583f6b8c4124d44}, + {0x98165af37b2153de, 0xc3727a337a8b704b}, + {0xbe1bf1b059e9a8d6, 0x744f18c0592e4c5d}, + {0xeda2ee1c7064130c, 0x1162def06f79df74}, + {0x9485d4d1c63e8be7, 0x8addcb5645ac2ba9}, + {0xb9a74a0637ce2ee1, 0x6d953e2bd7173693}, + {0xe8111c87c5c1ba99, 0xc8fa8db6ccdd0438}, + {0x910ab1d4db9914a0, 0x1d9c9892400a22a3}, + {0xb54d5e4a127f59c8, 0x2503beb6d00cab4c}, + {0xe2a0b5dc971f303a, 0x2e44ae64840fd61e}, + {0x8da471a9de737e24, 0x5ceaecfed289e5d3}, + {0xb10d8e1456105dad, 0x7425a83e872c5f48}, + {0xdd50f1996b947518, 0xd12f124e28f7771a}, + {0x8a5296ffe33cc92f, 0x82bd6b70d99aaa70}, + {0xace73cbfdc0bfb7b, 0x636cc64d1001550c}, + {0xd8210befd30efa5a, 0x3c47f7e05401aa4f}, + {0x8714a775e3e95c78, 0x65acfaec34810a72}, + {0xa8d9d1535ce3b396, 0x7f1839a741a14d0e}, + {0xd31045a8341ca07c, 0x1ede48111209a051}, + {0x83ea2b892091e44d, 0x934aed0aab460433}, + {0xa4e4b66b68b65d60, 0xf81da84d56178540}, + {0xce1de40642e3f4b9, 0x36251260ab9d668f}, + {0x80d2ae83e9ce78f3, 0xc1d72b7c6b42601a}, + {0xa1075a24e4421730, 0xb24cf65b8612f820}, + {0xc94930ae1d529cfc, 0xdee033f26797b628}, + {0xfb9b7cd9a4a7443c, 0x169840ef017da3b2}, + {0x9d412e0806e88aa5, 0x8e1f289560ee864f}, + {0xc491798a08a2ad4e, 0xf1a6f2bab92a27e3}, + {0xf5b5d7ec8acb58a2, 0xae10af696774b1dc}, + {0x9991a6f3d6bf1765, 0xacca6da1e0a8ef2a}, + {0xbff610b0cc6edd3f, 0x17fd090a58d32af4}, + {0xeff394dcff8a948e, 0xddfc4b4cef07f5b1}, + {0x95f83d0a1fb69cd9, 0x4abdaf101564f98f}, + {0xbb764c4ca7a4440f, 0x9d6d1ad41abe37f2}, + {0xea53df5fd18d5513, 0x84c86189216dc5ee}, + {0x92746b9be2f8552c, 0x32fd3cf5b4e49bb5}, + {0xb7118682dbb66a77, 0x3fbc8c33221dc2a2}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334b}, + {0x8f05b1163ba6832d, 0x29cb4d87f2a7400f}, + {0xb2c71d5bca9023f8, 0x743e20e9ef511013}, + {0xdf78e4b2bd342cf6, 0x914da9246b255417}, + {0x8bab8eefb6409c1a, 0x1ad089b6c2f7548f}, + {0xae9672aba3d0c320, 0xa184ac2473b529b2}, + {0xda3c0f568cc4f3e8, 0xc9e5d72d90a2741f}, + {0x8865899617fb1871, 0x7e2fa67c7a658893}, + {0xaa7eebfb9df9de8d, 0xddbb901b98feeab8}, + {0xd51ea6fa85785631, 0x552a74227f3ea566}, + {0x8533285c936b35de, 0xd53a88958f872760}, + {0xa67ff273b8460356, 0x8a892abaf368f138}, + {0xd01fef10a657842c, 0x2d2b7569b0432d86}, + {0x8213f56a67f6b29b, 0x9c3b29620e29fc74}, + {0xa298f2c501f45f42, 0x8349f3ba91b47b90}, + {0xcb3f2f7642717713, 0x241c70a936219a74}, + {0xfe0efb53d30dd4d7, 0xed238cd383aa0111}, + {0x9ec95d1463e8a506, 0xf4363804324a40ab}, + {0xc67bb4597ce2ce48, 0xb143c6053edcd0d6}, + {0xf81aa16fdc1b81da, 0xdd94b7868e94050b}, + {0x9b10a4e5e9913128, 0xca7cf2b4191c8327}, + {0xc1d4ce1f63f57d72, 0xfd1c2f611f63a3f1}, + {0xf24a01a73cf2dccf, 0xbc633b39673c8ced}, + {0x976e41088617ca01, 0xd5be0503e085d814}, + {0xbd49d14aa79dbc82, 0x4b2d8644d8a74e19}, + {0xec9c459d51852ba2, 0xddf8e7d60ed1219f}, + {0x93e1ab8252f33b45, 0xcabb90e5c942b504}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936244}, + {0xe7109bfba19c0c9d, 0x0cc512670a783ad5}, + {0x906a617d450187e2, 0x27fb2b80668b24c6}, + {0xb484f9dc9641e9da, 0xb1f9f660802dedf7}, + {0xe1a63853bbd26451, 0x5e7873f8a0396974}, + {0x8d07e33455637eb2, 0xdb0b487b6423e1e9}, + {0xb049dc016abc5e5f, 0x91ce1a9a3d2cda63}, + {0xdc5c5301c56b75f7, 0x7641a140cc7810fc}, + {0x89b9b3e11b6329ba, 0xa9e904c87fcb0a9e}, + {0xac2820d9623bf429, 0x546345fa9fbdcd45}, + {0xd732290fbacaf133, 0xa97c177947ad4096}, + {0x867f59a9d4bed6c0, 0x49ed8eabcccc485e}, + {0xa81f301449ee8c70, 0x5c68f256bfff5a75}, + {0xd226fc195c6a2f8c, 0x73832eec6fff3112}, + {0x83585d8fd9c25db7, 0xc831fd53c5ff7eac}, + {0xa42e74f3d032f525, 0xba3e7ca8b77f5e56}, + {0xcd3a1230c43fb26f, 0x28ce1bd2e55f35ec}, + {0x80444b5e7aa7cf85, 0x7980d163cf5b81b4}, + {0xa0555e361951c366, 0xd7e105bcc3326220}, + {0xc86ab5c39fa63440, 0x8dd9472bf3fefaa8}, + {0xfa856334878fc150, 0xb14f98f6f0feb952}, + {0x9c935e00d4b9d8d2, 0x6ed1bf9a569f33d4}, + {0xc3b8358109e84f07, 0x0a862f80ec4700c9}, + {0xf4a642e14c6262c8, 0xcd27bb612758c0fb}, + {0x98e7e9cccfbd7dbd, 0x8038d51cb897789d}, + {0xbf21e44003acdd2c, 0xe0470a63e6bd56c4}, + {0xeeea5d5004981478, 0x1858ccfce06cac75}, + {0x95527a5202df0ccb, 0x0f37801e0c43ebc9}, + {0xbaa718e68396cffd, 0xd30560258f54e6bb}, + {0xe950df20247c83fd, 0x47c6b82ef32a206a}, + {0x91d28b7416cdd27e, 0x4cdc331d57fa5442}, + {0xb6472e511c81471d, 0xe0133fe4adf8e953}, + {0xe3d8f9e563a198e5, 0x58180fddd97723a7}, + {0x8e679c2f5e44ff8f, 0x570f09eaa7ea7649}, + {0xb201833b35d63f73, 0x2cd2cc6551e513db}, + {0xde81e40a034bcf4f, 0xf8077f7ea65e58d2}, + {0x8b112e86420f6191, 0xfb04afaf27faf783}, + {0xadd57a27d29339f6, 0x79c5db9af1f9b564}, + {0xd94ad8b1c7380874, 0x18375281ae7822bd}, + {0x87cec76f1c830548, 0x8f2293910d0b15b6}, + {0xa9c2794ae3a3c69a, 0xb2eb3875504ddb23}, + {0xd433179d9c8cb841, 0x5fa60692a46151ec}, + {0x849feec281d7f328, 0xdbc7c41ba6bcd334}, + {0xa5c7ea73224deff3, 0x12b9b522906c0801}, + {0xcf39e50feae16bef, 0xd768226b34870a01}, + {0x81842f29f2cce375, 0xe6a1158300d46641}, + {0xa1e53af46f801c53, 0x60495ae3c1097fd1}, + {0xca5e89b18b602368, 0x385bb19cb14bdfc5}, + {0xfcf62c1dee382c42, 0x46729e03dd9ed7b6}, + {0x9e19db92b4e31ba9, 0x6c07a2c26a8346d2}, + {0xc5a05277621be293, 0xc7098b7305241886}, + { 0xf70867153aa2db38, + 0xb8cbee4fc66d1ea8 } +#else + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, + {0x95a8637627989aad, 0xdde7001379a44aa9}, + {0xf1c90080baf72cb1, 0x5324c68b12dd6339}, + {0xc350000000000000, 0x0000000000000000}, + {0x9dc5ada82b70b59d, 0xf020000000000000}, + {0xfee50b7025c36a08, 0x02f236d04753d5b5}, + {0xcde6fd5e09abcf26, 0xed4c0226b55e6f87}, + {0xa6539930bf6bff45, 0x84db8346b786151d}, + {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b3}, + {0xd910f7ff28069da4, 0x1b2ba1518094da05}, + {0xaf58416654a6babb, 0x387ac8d1970027b3}, + {0x8da471a9de737e24, 0x5ceaecfed289e5d3}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334b}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936244}, + { 0x95527a5202df0ccb, + 0x0f37801e0c43ebc9 } +#endif + }; + +#if FMT_USE_FULL_CACHE_DRAGONBOX + return pow10_significands[k - float_info<double>::min_k]; +#else + static constexpr const uint64_t powers_of_5_64[] = { + 0x0000000000000001, 0x0000000000000005, 0x0000000000000019, + 0x000000000000007d, 0x0000000000000271, 0x0000000000000c35, + 0x0000000000003d09, 0x000000000001312d, 0x000000000005f5e1, + 0x00000000001dcd65, 0x00000000009502f9, 0x0000000002e90edd, + 0x000000000e8d4a51, 0x0000000048c27395, 0x000000016bcc41e9, + 0x000000071afd498d, 0x0000002386f26fc1, 0x000000b1a2bc2ec5, + 0x000003782dace9d9, 0x00001158e460913d, 0x000056bc75e2d631, + 0x0001b1ae4d6e2ef5, 0x000878678326eac9, 0x002a5a058fc295ed, + 0x00d3c21bcecceda1, 0x0422ca8b0a00a425, 0x14adf4b7320334b9}; + + static const int compression_ratio = 27; + + // Compute base index. + int cache_index = (k - float_info<double>::min_k) / compression_ratio; + int kb = cache_index * compression_ratio + float_info<double>::min_k; + int offset = k - kb; + + // Get base cache. + uint128_fallback base_cache = pow10_significands[cache_index]; + if (offset == 0) return base_cache; + + // Compute the required amount of bit-shift. + int alpha = floor_log2_pow10(kb + offset) - floor_log2_pow10(kb) - offset; + FMT_ASSERT(alpha > 0 && alpha < 64, "shifting error detected"); + + // Try to recover the real cache. + uint64_t pow5 = powers_of_5_64[offset]; + uint128_fallback recovered_cache = umul128(base_cache.high(), pow5); + uint128_fallback middle_low = umul128(base_cache.low(), pow5); + + recovered_cache += middle_low.high(); + + uint64_t high_to_middle = recovered_cache.high() << (64 - alpha); + uint64_t middle_to_low = recovered_cache.low() << (64 - alpha); + + recovered_cache = + uint128_fallback{(recovered_cache.low() >> alpha) | high_to_middle, + ((middle_low.low() >> alpha) | middle_to_low)}; + FMT_ASSERT(recovered_cache.low() + 1 != 0, ""); + return {recovered_cache.high(), recovered_cache.low() + 1}; +#endif + } + + struct compute_mul_result { + carrier_uint result; + bool is_integer; + }; + struct compute_mul_parity_result { + bool parity; + bool is_integer; + }; + + static compute_mul_result compute_mul( + carrier_uint u, const cache_entry_type& cache) noexcept { + auto r = umul192_upper128(u, cache); + return {r.high(), r.low() == 0}; + } + + static uint32_t compute_delta(cache_entry_type const& cache, + int beta) noexcept { + return static_cast<uint32_t>(cache.high() >> (64 - 1 - beta)); + } + + static compute_mul_parity_result compute_mul_parity( + carrier_uint two_f, const cache_entry_type& cache, int beta) noexcept { + FMT_ASSERT(beta >= 1, ""); + FMT_ASSERT(beta < 64, ""); + + auto r = umul192_lower128(two_f, cache); + return {((r.high() >> (64 - beta)) & 1) != 0, + ((r.high() << beta) | (r.low() >> (64 - beta))) == 0}; + } + + static carrier_uint compute_left_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept { + return (cache.high() - + (cache.high() >> (num_significand_bits<double>() + 2))) >> + (64 - num_significand_bits<double>() - 1 - beta); + } + + static carrier_uint compute_right_endpoint_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept { + return (cache.high() + + (cache.high() >> (num_significand_bits<double>() + 1))) >> + (64 - num_significand_bits<double>() - 1 - beta); + } + + static carrier_uint compute_round_up_for_shorter_interval_case( + const cache_entry_type& cache, int beta) noexcept { + return ((cache.high() >> (64 - num_significand_bits<double>() - 2 - beta)) + + 1) / + 2; + } +}; + +// Various integer checks +template <class T> +bool is_left_endpoint_integer_shorter_interval(int exponent) noexcept { + const int case_shorter_interval_left_endpoint_lower_threshold = 2; + const int case_shorter_interval_left_endpoint_upper_threshold = 3; + return exponent >= case_shorter_interval_left_endpoint_lower_threshold && + exponent <= case_shorter_interval_left_endpoint_upper_threshold; +} + +// Remove trailing zeros from n and return the number of zeros removed (float) +FMT_INLINE int remove_trailing_zeros(uint32_t& n) noexcept { + FMT_ASSERT(n != 0, ""); + const uint32_t mod_inv_5 = 0xcccccccd; + const uint32_t mod_inv_25 = mod_inv_5 * mod_inv_5; + + int s = 0; + while (true) { + auto q = rotr(n * mod_inv_25, 2); + if (q > max_value<uint32_t>() / 100) break; + n = q; + s += 2; + } + auto q = rotr(n * mod_inv_5, 1); + if (q <= max_value<uint32_t>() / 10) { + n = q; + s |= 1; + } + + return s; +} + +// Removes trailing zeros and returns the number of zeros removed (double) +FMT_INLINE int remove_trailing_zeros(uint64_t& n) noexcept { + FMT_ASSERT(n != 0, ""); + + // This magic number is ceil(2^90 / 10^8). + constexpr uint64_t magic_number = 12379400392853802749ull; + auto nm = umul128(n, magic_number); + + // Is n is divisible by 10^8? + if ((nm.high() & ((1ull << (90 - 64)) - 1)) == 0 && nm.low() < magic_number) { + // If yes, work with the quotient. + auto n32 = static_cast<uint32_t>(nm.high() >> (90 - 64)); + + const uint32_t mod_inv_5 = 0xcccccccd; + const uint32_t mod_inv_25 = mod_inv_5 * mod_inv_5; + + int s = 8; + while (true) { + auto q = rotr(n32 * mod_inv_25, 2); + if (q > max_value<uint32_t>() / 100) break; + n32 = q; + s += 2; + } + auto q = rotr(n32 * mod_inv_5, 1); + if (q <= max_value<uint32_t>() / 10) { + n32 = q; + s |= 1; + } + + n = n32; + return s; + } + + // If n is not divisible by 10^8, work with n itself. + const uint64_t mod_inv_5 = 0xcccccccccccccccd; + const uint64_t mod_inv_25 = mod_inv_5 * mod_inv_5; + + int s = 0; + while (true) { + auto q = rotr(n * mod_inv_25, 2); + if (q > max_value<uint64_t>() / 100) break; + n = q; + s += 2; + } + auto q = rotr(n * mod_inv_5, 1); + if (q <= max_value<uint64_t>() / 10) { + n = q; + s |= 1; + } + + return s; +} + +// The main algorithm for shorter interval case +template <class T> +FMT_INLINE decimal_fp<T> shorter_interval_case(int exponent) noexcept { + decimal_fp<T> ret_value; + // Compute k and beta + const int minus_k = floor_log10_pow2_minus_log10_4_over_3(exponent); + const int beta = exponent + floor_log2_pow10(-minus_k); + + // Compute xi and zi + using cache_entry_type = typename cache_accessor<T>::cache_entry_type; + const cache_entry_type cache = cache_accessor<T>::get_cached_power(-minus_k); + + auto xi = cache_accessor<T>::compute_left_endpoint_for_shorter_interval_case( + cache, beta); + auto zi = cache_accessor<T>::compute_right_endpoint_for_shorter_interval_case( + cache, beta); + + // If the left endpoint is not an integer, increase it + if (!is_left_endpoint_integer_shorter_interval<T>(exponent)) ++xi; + + // Try bigger divisor + ret_value.significand = zi / 10; + + // If succeed, remove trailing zeros if necessary and return + if (ret_value.significand * 10 >= xi) { + ret_value.exponent = minus_k + 1; + ret_value.exponent += remove_trailing_zeros(ret_value.significand); + return ret_value; + } + + // Otherwise, compute the round-up of y + ret_value.significand = + cache_accessor<T>::compute_round_up_for_shorter_interval_case(cache, + beta); + ret_value.exponent = minus_k; + + // When tie occurs, choose one of them according to the rule + if (exponent >= float_info<T>::shorter_interval_tie_lower_threshold && + exponent <= float_info<T>::shorter_interval_tie_upper_threshold) { + ret_value.significand = ret_value.significand % 2 == 0 + ? ret_value.significand + : ret_value.significand - 1; + } else if (ret_value.significand < xi) { + ++ret_value.significand; + } + return ret_value; +} + +template <typename T> decimal_fp<T> to_decimal(T x) noexcept { + // Step 1: integer promotion & Schubfach multiplier calculation. + + using carrier_uint = typename float_info<T>::carrier_uint; + using cache_entry_type = typename cache_accessor<T>::cache_entry_type; + auto br = bit_cast<carrier_uint>(x); + + // Extract significand bits and exponent bits. + const carrier_uint significand_mask = + (static_cast<carrier_uint>(1) << num_significand_bits<T>()) - 1; + carrier_uint significand = (br & significand_mask); + int exponent = + static_cast<int>((br & exponent_mask<T>()) >> num_significand_bits<T>()); + + if (exponent != 0) { // Check if normal. + exponent -= exponent_bias<T>() + num_significand_bits<T>(); + + // Shorter interval case; proceed like Schubfach. + // In fact, when exponent == 1 and significand == 0, the interval is + // regular. However, it can be shown that the end-results are anyway same. + if (significand == 0) return shorter_interval_case<T>(exponent); + + significand |= (static_cast<carrier_uint>(1) << num_significand_bits<T>()); + } else { + // Subnormal case; the interval is always regular. + if (significand == 0) return {0, 0}; + exponent = + std::numeric_limits<T>::min_exponent - num_significand_bits<T>() - 1; + } + + const bool include_left_endpoint = (significand % 2 == 0); + const bool include_right_endpoint = include_left_endpoint; + + // Compute k and beta. + const int minus_k = floor_log10_pow2(exponent) - float_info<T>::kappa; + const cache_entry_type cache = cache_accessor<T>::get_cached_power(-minus_k); + const int beta = exponent + floor_log2_pow10(-minus_k); + + // Compute zi and deltai. + // 10^kappa <= deltai < 10^(kappa + 1) + const uint32_t deltai = cache_accessor<T>::compute_delta(cache, beta); + const carrier_uint two_fc = significand << 1; + + // For the case of binary32, the result of integer check is not correct for + // 29711844 * 2^-82 + // = 6.1442653300000000008655037797566933477355632930994033813476... * 10^-18 + // and 29711844 * 2^-81 + // = 1.2288530660000000001731007559513386695471126586198806762695... * 10^-17, + // and they are the unique counterexamples. However, since 29711844 is even, + // this does not cause any problem for the endpoints calculations; it can only + // cause a problem when we need to perform integer check for the center. + // Fortunately, with these inputs, that branch is never executed, so we are + // fine. + const typename cache_accessor<T>::compute_mul_result z_mul = + cache_accessor<T>::compute_mul((two_fc | 1) << beta, cache); + + // Step 2: Try larger divisor; remove trailing zeros if necessary. + + // Using an upper bound on zi, we might be able to optimize the division + // better than the compiler; we are computing zi / big_divisor here. + decimal_fp<T> ret_value; + ret_value.significand = divide_by_10_to_kappa_plus_1(z_mul.result); + uint32_t r = static_cast<uint32_t>(z_mul.result - float_info<T>::big_divisor * + ret_value.significand); + + if (r < deltai) { + // Exclude the right endpoint if necessary. + if (r == 0 && z_mul.is_integer && !include_right_endpoint) { + --ret_value.significand; + r = float_info<T>::big_divisor; + goto small_divisor_case_label; + } + } else if (r > deltai) { + goto small_divisor_case_label; + } else { + // r == deltai; compare fractional parts. + const carrier_uint two_fl = two_fc - 1; + + if (!include_left_endpoint || + exponent < float_info<T>::case_fc_pm_half_lower_threshold || + exponent > float_info<T>::divisibility_check_by_5_threshold) { + // If the left endpoint is not included, the condition for + // success is z^(f) < delta^(f) (odd parity). + // Otherwise, the inequalities on exponent ensure that + // x is not an integer, so if z^(f) >= delta^(f) (even parity), we in fact + // have strict inequality. + if (!cache_accessor<T>::compute_mul_parity(two_fl, cache, beta).parity) { + goto small_divisor_case_label; + } + } else { + const typename cache_accessor<T>::compute_mul_parity_result x_mul = + cache_accessor<T>::compute_mul_parity(two_fl, cache, beta); + if (!x_mul.parity && !x_mul.is_integer) { + goto small_divisor_case_label; + } + } + } + ret_value.exponent = minus_k + float_info<T>::kappa + 1; + + // We may need to remove trailing zeros. + ret_value.exponent += remove_trailing_zeros(ret_value.significand); + return ret_value; + + // Step 3: Find the significand with the smaller divisor. + +small_divisor_case_label: + ret_value.significand *= 10; + ret_value.exponent = minus_k + float_info<T>::kappa; + + uint32_t dist = r - (deltai / 2) + (float_info<T>::small_divisor / 2); + const bool approx_y_parity = + ((dist ^ (float_info<T>::small_divisor / 2)) & 1) != 0; + + // Is dist divisible by 10^kappa? + const bool divisible_by_small_divisor = + check_divisibility_and_divide_by_pow10<float_info<T>::kappa>(dist); + + // Add dist / 10^kappa to the significand. + ret_value.significand += dist; + + if (!divisible_by_small_divisor) return ret_value; + + // Check z^(f) >= epsilon^(f). + // We have either yi == zi - epsiloni or yi == (zi - epsiloni) - 1, + // where yi == zi - epsiloni if and only if z^(f) >= epsilon^(f). + // Since there are only 2 possibilities, we only need to care about the + // parity. Also, zi and r should have the same parity since the divisor + // is an even number. + const auto y_mul = cache_accessor<T>::compute_mul_parity(two_fc, cache, beta); + + // If z^(f) >= epsilon^(f), we might have a tie when z^(f) == epsilon^(f), + // or equivalently, when y is an integer. + if (y_mul.parity != approx_y_parity) + --ret_value.significand; + else if (y_mul.is_integer && ret_value.significand % 2 != 0) + --ret_value.significand; + return ret_value; +} +} // namespace dragonbox + +#ifdef _MSC_VER +FMT_FUNC auto fmt_snprintf(char* buf, size_t size, const char* fmt, ...) + -> int { + auto args = va_list(); + va_start(args, fmt); + int result = vsnprintf_s(buf, size, _TRUNCATE, fmt, args); + va_end(args); + return result; +} +#endif +} // namespace detail + +template <> struct formatter<detail::bigint> { + FMT_CONSTEXPR auto parse(format_parse_context& ctx) + -> format_parse_context::iterator { + return ctx.begin(); + } + + template <typename FormatContext> + auto format(const detail::bigint& n, FormatContext& ctx) const -> + typename FormatContext::iterator { + auto out = ctx.out(); + bool first = true; + for (auto i = n.bigits_.size(); i > 0; --i) { + auto value = n.bigits_[i - 1u]; + if (first) { + out = format_to(out, FMT_STRING("{:x}"), value); + first = false; + continue; + } + out = format_to(out, FMT_STRING("{:08x}"), value); + } + if (n.exp_ > 0) + out = format_to(out, FMT_STRING("p{}"), + n.exp_ * detail::bigint::bigit_bits); + return out; + } +}; + +FMT_FUNC detail::utf8_to_utf16::utf8_to_utf16(string_view s) { + for_each_codepoint(s, [this](uint32_t cp, string_view) { + if (cp == invalid_code_point) FMT_THROW(std::runtime_error("invalid utf8")); + if (cp <= 0xFFFF) { + buffer_.push_back(static_cast<wchar_t>(cp)); + } else { + cp -= 0x10000; + buffer_.push_back(static_cast<wchar_t>(0xD800 + (cp >> 10))); + buffer_.push_back(static_cast<wchar_t>(0xDC00 + (cp & 0x3FF))); + } + return true; + }); + buffer_.push_back(0); +} + +FMT_FUNC void format_system_error(detail::buffer<char>& out, int error_code, + const char* message) noexcept { + FMT_TRY { + auto ec = std::error_code(error_code, std::generic_category()); + write(std::back_inserter(out), std::system_error(ec, message).what()); + return; + } + FMT_CATCH(...) {} + format_error_code(out, error_code, message); +} + +FMT_FUNC void report_system_error(int error_code, + const char* message) noexcept { + report_error(format_system_error, error_code, message); +} + +FMT_FUNC std::string vformat(string_view fmt, format_args args) { + // Don't optimize the "{}" case to keep the binary size small and because it + // can be better optimized in fmt::format anyway. + auto buffer = memory_buffer(); + detail::vformat_to(buffer, fmt, args); + return to_string(buffer); +} + +#ifdef _WIN32 +namespace detail { +using dword = conditional_t<sizeof(long) == 4, unsigned long, unsigned>; +extern "C" __declspec(dllimport) int __stdcall WriteConsoleW( // + void*, const void*, dword, dword*, void*); +} // namespace detail +#endif + +namespace detail { +FMT_FUNC void print(std::FILE* f, string_view text) { +#ifdef _WIN32 + auto fd = _fileno(f); + if (_isatty(fd)) { + detail::utf8_to_utf16 u16(string_view(text.data(), text.size())); + auto written = detail::dword(); + if (detail::WriteConsoleW(reinterpret_cast<void*>(_get_osfhandle(fd)), + u16.c_str(), static_cast<uint32_t>(u16.size()), + &written, nullptr)) { + return; + } + // Fallback to fwrite on failure. It can happen if the output has been + // redirected to NUL. + } +#endif + detail::fwrite_fully(text.data(), 1, text.size(), f); +} +} // namespace detail + +FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) { + memory_buffer buffer; + detail::vformat_to(buffer, format_str, args); + detail::print(f, {buffer.data(), buffer.size()}); +} + +#ifdef _WIN32 +// Print assuming legacy (non-Unicode) encoding. +FMT_FUNC void detail::vprint_mojibake(std::FILE* f, string_view format_str, + format_args args) { + memory_buffer buffer; + detail::vformat_to(buffer, format_str, + basic_format_args<buffer_context<char>>(args)); + fwrite_fully(buffer.data(), 1, buffer.size(), f); +} +#endif + +FMT_FUNC void vprint(string_view format_str, format_args args) { + vprint(stdout, format_str, args); +} + +namespace detail { + +struct singleton { + unsigned char upper; + unsigned char lower_count; +}; + +inline auto is_printable(uint16_t x, const singleton* singletons, + size_t singletons_size, + const unsigned char* singleton_lowers, + const unsigned char* normal, size_t normal_size) + -> bool { + auto upper = x >> 8; + auto lower_start = 0; + for (size_t i = 0; i < singletons_size; ++i) { + auto s = singletons[i]; + auto lower_end = lower_start + s.lower_count; + if (upper < s.upper) break; + if (upper == s.upper) { + for (auto j = lower_start; j < lower_end; ++j) { + if (singleton_lowers[j] == (x & 0xff)) return false; + } + } + lower_start = lower_end; + } + + auto xsigned = static_cast<int>(x); + auto current = true; + for (size_t i = 0; i < normal_size; ++i) { + auto v = static_cast<int>(normal[i]); + auto len = (v & 0x80) != 0 ? (v & 0x7f) << 8 | normal[++i] : v; + xsigned -= len; + if (xsigned < 0) break; + current = !current; + } + return current; +} + +// This code is generated by support/printable.py. +FMT_FUNC auto is_printable(uint32_t cp) -> bool { + static constexpr singleton singletons0[] = { + {0x00, 1}, {0x03, 5}, {0x05, 6}, {0x06, 3}, {0x07, 6}, {0x08, 8}, + {0x09, 17}, {0x0a, 28}, {0x0b, 25}, {0x0c, 20}, {0x0d, 16}, {0x0e, 13}, + {0x0f, 4}, {0x10, 3}, {0x12, 18}, {0x13, 9}, {0x16, 1}, {0x17, 5}, + {0x18, 2}, {0x19, 3}, {0x1a, 7}, {0x1c, 2}, {0x1d, 1}, {0x1f, 22}, + {0x20, 3}, {0x2b, 3}, {0x2c, 2}, {0x2d, 11}, {0x2e, 1}, {0x30, 3}, + {0x31, 2}, {0x32, 1}, {0xa7, 2}, {0xa9, 2}, {0xaa, 4}, {0xab, 8}, + {0xfa, 2}, {0xfb, 5}, {0xfd, 4}, {0xfe, 3}, {0xff, 9}, + }; + static constexpr unsigned char singletons0_lower[] = { + 0xad, 0x78, 0x79, 0x8b, 0x8d, 0xa2, 0x30, 0x57, 0x58, 0x8b, 0x8c, 0x90, + 0x1c, 0x1d, 0xdd, 0x0e, 0x0f, 0x4b, 0x4c, 0xfb, 0xfc, 0x2e, 0x2f, 0x3f, + 0x5c, 0x5d, 0x5f, 0xb5, 0xe2, 0x84, 0x8d, 0x8e, 0x91, 0x92, 0xa9, 0xb1, + 0xba, 0xbb, 0xc5, 0xc6, 0xc9, 0xca, 0xde, 0xe4, 0xe5, 0xff, 0x00, 0x04, + 0x11, 0x12, 0x29, 0x31, 0x34, 0x37, 0x3a, 0x3b, 0x3d, 0x49, 0x4a, 0x5d, + 0x84, 0x8e, 0x92, 0xa9, 0xb1, 0xb4, 0xba, 0xbb, 0xc6, 0xca, 0xce, 0xcf, + 0xe4, 0xe5, 0x00, 0x04, 0x0d, 0x0e, 0x11, 0x12, 0x29, 0x31, 0x34, 0x3a, + 0x3b, 0x45, 0x46, 0x49, 0x4a, 0x5e, 0x64, 0x65, 0x84, 0x91, 0x9b, 0x9d, + 0xc9, 0xce, 0xcf, 0x0d, 0x11, 0x29, 0x45, 0x49, 0x57, 0x64, 0x65, 0x8d, + 0x91, 0xa9, 0xb4, 0xba, 0xbb, 0xc5, 0xc9, 0xdf, 0xe4, 0xe5, 0xf0, 0x0d, + 0x11, 0x45, 0x49, 0x64, 0x65, 0x80, 0x84, 0xb2, 0xbc, 0xbe, 0xbf, 0xd5, + 0xd7, 0xf0, 0xf1, 0x83, 0x85, 0x8b, 0xa4, 0xa6, 0xbe, 0xbf, 0xc5, 0xc7, + 0xce, 0xcf, 0xda, 0xdb, 0x48, 0x98, 0xbd, 0xcd, 0xc6, 0xce, 0xcf, 0x49, + 0x4e, 0x4f, 0x57, 0x59, 0x5e, 0x5f, 0x89, 0x8e, 0x8f, 0xb1, 0xb6, 0xb7, + 0xbf, 0xc1, 0xc6, 0xc7, 0xd7, 0x11, 0x16, 0x17, 0x5b, 0x5c, 0xf6, 0xf7, + 0xfe, 0xff, 0x80, 0x0d, 0x6d, 0x71, 0xde, 0xdf, 0x0e, 0x0f, 0x1f, 0x6e, + 0x6f, 0x1c, 0x1d, 0x5f, 0x7d, 0x7e, 0xae, 0xaf, 0xbb, 0xbc, 0xfa, 0x16, + 0x17, 0x1e, 0x1f, 0x46, 0x47, 0x4e, 0x4f, 0x58, 0x5a, 0x5c, 0x5e, 0x7e, + 0x7f, 0xb5, 0xc5, 0xd4, 0xd5, 0xdc, 0xf0, 0xf1, 0xf5, 0x72, 0x73, 0x8f, + 0x74, 0x75, 0x96, 0x2f, 0x5f, 0x26, 0x2e, 0x2f, 0xa7, 0xaf, 0xb7, 0xbf, + 0xc7, 0xcf, 0xd7, 0xdf, 0x9a, 0x40, 0x97, 0x98, 0x30, 0x8f, 0x1f, 0xc0, + 0xc1, 0xce, 0xff, 0x4e, 0x4f, 0x5a, 0x5b, 0x07, 0x08, 0x0f, 0x10, 0x27, + 0x2f, 0xee, 0xef, 0x6e, 0x6f, 0x37, 0x3d, 0x3f, 0x42, 0x45, 0x90, 0x91, + 0xfe, 0xff, 0x53, 0x67, 0x75, 0xc8, 0xc9, 0xd0, 0xd1, 0xd8, 0xd9, 0xe7, + 0xfe, 0xff, + }; + static constexpr singleton singletons1[] = { + {0x00, 6}, {0x01, 1}, {0x03, 1}, {0x04, 2}, {0x08, 8}, {0x09, 2}, + {0x0a, 5}, {0x0b, 2}, {0x0e, 4}, {0x10, 1}, {0x11, 2}, {0x12, 5}, + {0x13, 17}, {0x14, 1}, {0x15, 2}, {0x17, 2}, {0x19, 13}, {0x1c, 5}, + {0x1d, 8}, {0x24, 1}, {0x6a, 3}, {0x6b, 2}, {0xbc, 2}, {0xd1, 2}, + {0xd4, 12}, {0xd5, 9}, {0xd6, 2}, {0xd7, 2}, {0xda, 1}, {0xe0, 5}, + {0xe1, 2}, {0xe8, 2}, {0xee, 32}, {0xf0, 4}, {0xf8, 2}, {0xf9, 2}, + {0xfa, 2}, {0xfb, 1}, + }; + static constexpr unsigned char singletons1_lower[] = { + 0x0c, 0x27, 0x3b, 0x3e, 0x4e, 0x4f, 0x8f, 0x9e, 0x9e, 0x9f, 0x06, 0x07, + 0x09, 0x36, 0x3d, 0x3e, 0x56, 0xf3, 0xd0, 0xd1, 0x04, 0x14, 0x18, 0x36, + 0x37, 0x56, 0x57, 0x7f, 0xaa, 0xae, 0xaf, 0xbd, 0x35, 0xe0, 0x12, 0x87, + 0x89, 0x8e, 0x9e, 0x04, 0x0d, 0x0e, 0x11, 0x12, 0x29, 0x31, 0x34, 0x3a, + 0x45, 0x46, 0x49, 0x4a, 0x4e, 0x4f, 0x64, 0x65, 0x5c, 0xb6, 0xb7, 0x1b, + 0x1c, 0x07, 0x08, 0x0a, 0x0b, 0x14, 0x17, 0x36, 0x39, 0x3a, 0xa8, 0xa9, + 0xd8, 0xd9, 0x09, 0x37, 0x90, 0x91, 0xa8, 0x07, 0x0a, 0x3b, 0x3e, 0x66, + 0x69, 0x8f, 0x92, 0x6f, 0x5f, 0xee, 0xef, 0x5a, 0x62, 0x9a, 0x9b, 0x27, + 0x28, 0x55, 0x9d, 0xa0, 0xa1, 0xa3, 0xa4, 0xa7, 0xa8, 0xad, 0xba, 0xbc, + 0xc4, 0x06, 0x0b, 0x0c, 0x15, 0x1d, 0x3a, 0x3f, 0x45, 0x51, 0xa6, 0xa7, + 0xcc, 0xcd, 0xa0, 0x07, 0x19, 0x1a, 0x22, 0x25, 0x3e, 0x3f, 0xc5, 0xc6, + 0x04, 0x20, 0x23, 0x25, 0x26, 0x28, 0x33, 0x38, 0x3a, 0x48, 0x4a, 0x4c, + 0x50, 0x53, 0x55, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x63, 0x65, 0x66, + 0x6b, 0x73, 0x78, 0x7d, 0x7f, 0x8a, 0xa4, 0xaa, 0xaf, 0xb0, 0xc0, 0xd0, + 0xae, 0xaf, 0x79, 0xcc, 0x6e, 0x6f, 0x93, + }; + static constexpr unsigned char normal0[] = { + 0x00, 0x20, 0x5f, 0x22, 0x82, 0xdf, 0x04, 0x82, 0x44, 0x08, 0x1b, 0x04, + 0x06, 0x11, 0x81, 0xac, 0x0e, 0x80, 0xab, 0x35, 0x28, 0x0b, 0x80, 0xe0, + 0x03, 0x19, 0x08, 0x01, 0x04, 0x2f, 0x04, 0x34, 0x04, 0x07, 0x03, 0x01, + 0x07, 0x06, 0x07, 0x11, 0x0a, 0x50, 0x0f, 0x12, 0x07, 0x55, 0x07, 0x03, + 0x04, 0x1c, 0x0a, 0x09, 0x03, 0x08, 0x03, 0x07, 0x03, 0x02, 0x03, 0x03, + 0x03, 0x0c, 0x04, 0x05, 0x03, 0x0b, 0x06, 0x01, 0x0e, 0x15, 0x05, 0x3a, + 0x03, 0x11, 0x07, 0x06, 0x05, 0x10, 0x07, 0x57, 0x07, 0x02, 0x07, 0x15, + 0x0d, 0x50, 0x04, 0x43, 0x03, 0x2d, 0x03, 0x01, 0x04, 0x11, 0x06, 0x0f, + 0x0c, 0x3a, 0x04, 0x1d, 0x25, 0x5f, 0x20, 0x6d, 0x04, 0x6a, 0x25, 0x80, + 0xc8, 0x05, 0x82, 0xb0, 0x03, 0x1a, 0x06, 0x82, 0xfd, 0x03, 0x59, 0x07, + 0x15, 0x0b, 0x17, 0x09, 0x14, 0x0c, 0x14, 0x0c, 0x6a, 0x06, 0x0a, 0x06, + 0x1a, 0x06, 0x59, 0x07, 0x2b, 0x05, 0x46, 0x0a, 0x2c, 0x04, 0x0c, 0x04, + 0x01, 0x03, 0x31, 0x0b, 0x2c, 0x04, 0x1a, 0x06, 0x0b, 0x03, 0x80, 0xac, + 0x06, 0x0a, 0x06, 0x21, 0x3f, 0x4c, 0x04, 0x2d, 0x03, 0x74, 0x08, 0x3c, + 0x03, 0x0f, 0x03, 0x3c, 0x07, 0x38, 0x08, 0x2b, 0x05, 0x82, 0xff, 0x11, + 0x18, 0x08, 0x2f, 0x11, 0x2d, 0x03, 0x20, 0x10, 0x21, 0x0f, 0x80, 0x8c, + 0x04, 0x82, 0x97, 0x19, 0x0b, 0x15, 0x88, 0x94, 0x05, 0x2f, 0x05, 0x3b, + 0x07, 0x02, 0x0e, 0x18, 0x09, 0x80, 0xb3, 0x2d, 0x74, 0x0c, 0x80, 0xd6, + 0x1a, 0x0c, 0x05, 0x80, 0xff, 0x05, 0x80, 0xdf, 0x0c, 0xee, 0x0d, 0x03, + 0x84, 0x8d, 0x03, 0x37, 0x09, 0x81, 0x5c, 0x14, 0x80, 0xb8, 0x08, 0x80, + 0xcb, 0x2a, 0x38, 0x03, 0x0a, 0x06, 0x38, 0x08, 0x46, 0x08, 0x0c, 0x06, + 0x74, 0x0b, 0x1e, 0x03, 0x5a, 0x04, 0x59, 0x09, 0x80, 0x83, 0x18, 0x1c, + 0x0a, 0x16, 0x09, 0x4c, 0x04, 0x80, 0x8a, 0x06, 0xab, 0xa4, 0x0c, 0x17, + 0x04, 0x31, 0xa1, 0x04, 0x81, 0xda, 0x26, 0x07, 0x0c, 0x05, 0x05, 0x80, + 0xa5, 0x11, 0x81, 0x6d, 0x10, 0x78, 0x28, 0x2a, 0x06, 0x4c, 0x04, 0x80, + 0x8d, 0x04, 0x80, 0xbe, 0x03, 0x1b, 0x03, 0x0f, 0x0d, + }; + static constexpr unsigned char normal1[] = { + 0x5e, 0x22, 0x7b, 0x05, 0x03, 0x04, 0x2d, 0x03, 0x66, 0x03, 0x01, 0x2f, + 0x2e, 0x80, 0x82, 0x1d, 0x03, 0x31, 0x0f, 0x1c, 0x04, 0x24, 0x09, 0x1e, + 0x05, 0x2b, 0x05, 0x44, 0x04, 0x0e, 0x2a, 0x80, 0xaa, 0x06, 0x24, 0x04, + 0x24, 0x04, 0x28, 0x08, 0x34, 0x0b, 0x01, 0x80, 0x90, 0x81, 0x37, 0x09, + 0x16, 0x0a, 0x08, 0x80, 0x98, 0x39, 0x03, 0x63, 0x08, 0x09, 0x30, 0x16, + 0x05, 0x21, 0x03, 0x1b, 0x05, 0x01, 0x40, 0x38, 0x04, 0x4b, 0x05, 0x2f, + 0x04, 0x0a, 0x07, 0x09, 0x07, 0x40, 0x20, 0x27, 0x04, 0x0c, 0x09, 0x36, + 0x03, 0x3a, 0x05, 0x1a, 0x07, 0x04, 0x0c, 0x07, 0x50, 0x49, 0x37, 0x33, + 0x0d, 0x33, 0x07, 0x2e, 0x08, 0x0a, 0x81, 0x26, 0x52, 0x4e, 0x28, 0x08, + 0x2a, 0x56, 0x1c, 0x14, 0x17, 0x09, 0x4e, 0x04, 0x1e, 0x0f, 0x43, 0x0e, + 0x19, 0x07, 0x0a, 0x06, 0x48, 0x08, 0x27, 0x09, 0x75, 0x0b, 0x3f, 0x41, + 0x2a, 0x06, 0x3b, 0x05, 0x0a, 0x06, 0x51, 0x06, 0x01, 0x05, 0x10, 0x03, + 0x05, 0x80, 0x8b, 0x62, 0x1e, 0x48, 0x08, 0x0a, 0x80, 0xa6, 0x5e, 0x22, + 0x45, 0x0b, 0x0a, 0x06, 0x0d, 0x13, 0x39, 0x07, 0x0a, 0x36, 0x2c, 0x04, + 0x10, 0x80, 0xc0, 0x3c, 0x64, 0x53, 0x0c, 0x48, 0x09, 0x0a, 0x46, 0x45, + 0x1b, 0x48, 0x08, 0x53, 0x1d, 0x39, 0x81, 0x07, 0x46, 0x0a, 0x1d, 0x03, + 0x47, 0x49, 0x37, 0x03, 0x0e, 0x08, 0x0a, 0x06, 0x39, 0x07, 0x0a, 0x81, + 0x36, 0x19, 0x80, 0xb7, 0x01, 0x0f, 0x32, 0x0d, 0x83, 0x9b, 0x66, 0x75, + 0x0b, 0x80, 0xc4, 0x8a, 0xbc, 0x84, 0x2f, 0x8f, 0xd1, 0x82, 0x47, 0xa1, + 0xb9, 0x82, 0x39, 0x07, 0x2a, 0x04, 0x02, 0x60, 0x26, 0x0a, 0x46, 0x0a, + 0x28, 0x05, 0x13, 0x82, 0xb0, 0x5b, 0x65, 0x4b, 0x04, 0x39, 0x07, 0x11, + 0x40, 0x05, 0x0b, 0x02, 0x0e, 0x97, 0xf8, 0x08, 0x84, 0xd6, 0x2a, 0x09, + 0xa2, 0xf7, 0x81, 0x1f, 0x31, 0x03, 0x11, 0x04, 0x08, 0x81, 0x8c, 0x89, + 0x04, 0x6b, 0x05, 0x0d, 0x03, 0x09, 0x07, 0x10, 0x93, 0x60, 0x80, 0xf6, + 0x0a, 0x73, 0x08, 0x6e, 0x17, 0x46, 0x80, 0x9a, 0x14, 0x0c, 0x57, 0x09, + 0x19, 0x80, 0x87, 0x81, 0x47, 0x03, 0x85, 0x42, 0x0f, 0x15, 0x85, 0x50, + 0x2b, 0x80, 0xd5, 0x2d, 0x03, 0x1a, 0x04, 0x02, 0x81, 0x70, 0x3a, 0x05, + 0x01, 0x85, 0x00, 0x80, 0xd7, 0x29, 0x4c, 0x04, 0x0a, 0x04, 0x02, 0x83, + 0x11, 0x44, 0x4c, 0x3d, 0x80, 0xc2, 0x3c, 0x06, 0x01, 0x04, 0x55, 0x05, + 0x1b, 0x34, 0x02, 0x81, 0x0e, 0x2c, 0x04, 0x64, 0x0c, 0x56, 0x0a, 0x80, + 0xae, 0x38, 0x1d, 0x0d, 0x2c, 0x04, 0x09, 0x07, 0x02, 0x0e, 0x06, 0x80, + 0x9a, 0x83, 0xd8, 0x08, 0x0d, 0x03, 0x0d, 0x03, 0x74, 0x0c, 0x59, 0x07, + 0x0c, 0x14, 0x0c, 0x04, 0x38, 0x08, 0x0a, 0x06, 0x28, 0x08, 0x22, 0x4e, + 0x81, 0x54, 0x0c, 0x15, 0x03, 0x03, 0x05, 0x07, 0x09, 0x19, 0x07, 0x07, + 0x09, 0x03, 0x0d, 0x07, 0x29, 0x80, 0xcb, 0x25, 0x0a, 0x84, 0x06, + }; + auto lower = static_cast<uint16_t>(cp); + if (cp < 0x10000) { + return is_printable(lower, singletons0, + sizeof(singletons0) / sizeof(*singletons0), + singletons0_lower, normal0, sizeof(normal0)); + } + if (cp < 0x20000) { + return is_printable(lower, singletons1, + sizeof(singletons1) / sizeof(*singletons1), + singletons1_lower, normal1, sizeof(normal1)); + } + if (0x2a6de <= cp && cp < 0x2a700) return false; + if (0x2b735 <= cp && cp < 0x2b740) return false; + if (0x2b81e <= cp && cp < 0x2b820) return false; + if (0x2cea2 <= cp && cp < 0x2ceb0) return false; + if (0x2ebe1 <= cp && cp < 0x2f800) return false; + if (0x2fa1e <= cp && cp < 0x30000) return false; + if (0x3134b <= cp && cp < 0xe0100) return false; + if (0xe01f0 <= cp && cp < 0x110000) return false; + return cp < 0x110000; +} + +} // namespace detail + +FMT_END_NAMESPACE + +#endif // FMT_FORMAT_INL_H_ diff --git a/src/fmtlib/fmt/format.h b/src/fmtlib/fmt/format.h new file mode 100644 index 0000000..0bd2fdb --- /dev/null +++ b/src/fmtlib/fmt/format.h @@ -0,0 +1,4192 @@ +/* + Formatting library for C++ + + Copyright (c) 2012 - present, Victor Zverovich + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + --- Optional exception to the license --- + + As an exception, if, as a result of your compiling your source code, portions + of this Software are embedded into a machine-executable object form of such + source code, you may redistribute such embedded portions in such object form + without including the above copyright and permission notices. + */ + +#ifndef FMT_FORMAT_H_ +#define FMT_FORMAT_H_ + +#include <cmath> // std::signbit +#include <cstdint> // uint32_t +#include <cstring> // std::memcpy +#include <limits> // std::numeric_limits +#include <memory> // std::uninitialized_copy +#include <stdexcept> // std::runtime_error +#include <system_error> // std::system_error + +#ifdef __cpp_lib_bit_cast +# include <bit> // std::bitcast +#endif + +#include "core.h" + +#if FMT_GCC_VERSION +# define FMT_GCC_VISIBILITY_HIDDEN __attribute__((visibility("hidden"))) +#else +# define FMT_GCC_VISIBILITY_HIDDEN +#endif + +#ifdef __NVCC__ +# define FMT_CUDA_VERSION (__CUDACC_VER_MAJOR__ * 100 + __CUDACC_VER_MINOR__) +#else +# define FMT_CUDA_VERSION 0 +#endif + +#ifdef __has_builtin +# define FMT_HAS_BUILTIN(x) __has_builtin(x) +#else +# define FMT_HAS_BUILTIN(x) 0 +#endif + +#if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_NOINLINE __attribute__((noinline)) +#else +# define FMT_NOINLINE +#endif + +#if FMT_MSC_VERSION +# define FMT_MSC_DEFAULT = default +#else +# define FMT_MSC_DEFAULT +#endif + +#ifndef FMT_THROW +# if FMT_EXCEPTIONS +# if FMT_MSC_VERSION || defined(__NVCC__) +FMT_BEGIN_NAMESPACE +namespace detail { +template <typename Exception> inline void do_throw(const Exception& x) { + // Silence unreachable code warnings in MSVC and NVCC because these + // are nearly impossible to fix in a generic code. + volatile bool b = true; + if (b) throw x; +} +} // namespace detail +FMT_END_NAMESPACE +# define FMT_THROW(x) detail::do_throw(x) +# else +# define FMT_THROW(x) throw x +# endif +# else +# define FMT_THROW(x) \ + do { \ + FMT_ASSERT(false, (x).what()); \ + } while (false) +# endif +#endif + +#if FMT_EXCEPTIONS +# define FMT_TRY try +# define FMT_CATCH(x) catch (x) +#else +# define FMT_TRY if (true) +# define FMT_CATCH(x) if (false) +#endif + +#ifndef FMT_MAYBE_UNUSED +# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused) +# define FMT_MAYBE_UNUSED [[maybe_unused]] +# else +# define FMT_MAYBE_UNUSED +# endif +#endif + +#ifndef FMT_USE_USER_DEFINED_LITERALS +// EDG based compilers (Intel, NVIDIA, Elbrus, etc), GCC and MSVC support UDLs. +# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \ + FMT_MSC_VERSION >= 1900) && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= /* UDL feature */ 480) +# define FMT_USE_USER_DEFINED_LITERALS 1 +# else +# define FMT_USE_USER_DEFINED_LITERALS 0 +# endif +#endif + +// Defining FMT_REDUCE_INT_INSTANTIATIONS to 1, will reduce the number of +// integer formatter template instantiations to just one by only using the +// largest integer type. This results in a reduction in binary size but will +// cause a decrease in integer formatting performance. +#if !defined(FMT_REDUCE_INT_INSTANTIATIONS) +# define FMT_REDUCE_INT_INSTANTIATIONS 0 +#endif + +// __builtin_clz is broken in clang with Microsoft CodeGen: +// https://github.com/fmtlib/fmt/issues/519. +#if !FMT_MSC_VERSION +# if FMT_HAS_BUILTIN(__builtin_clz) || FMT_GCC_VERSION || FMT_ICC_VERSION +# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) +# endif +# if FMT_HAS_BUILTIN(__builtin_clzll) || FMT_GCC_VERSION || FMT_ICC_VERSION +# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) +# endif +#endif + +// __builtin_ctz is broken in Intel Compiler Classic on Windows: +// https://github.com/fmtlib/fmt/issues/2510. +#ifndef __ICL +# if FMT_HAS_BUILTIN(__builtin_ctz) || FMT_GCC_VERSION || FMT_ICC_VERSION || \ + defined(__NVCOMPILER) +# define FMT_BUILTIN_CTZ(n) __builtin_ctz(n) +# endif +# if FMT_HAS_BUILTIN(__builtin_ctzll) || FMT_GCC_VERSION || \ + FMT_ICC_VERSION || defined(__NVCOMPILER) +# define FMT_BUILTIN_CTZLL(n) __builtin_ctzll(n) +# endif +#endif + +#if FMT_MSC_VERSION +# include <intrin.h> // _BitScanReverse[64], _BitScanForward[64], _umul128 +#endif + +// Some compilers masquerade as both MSVC and GCC-likes or otherwise support +// __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the +// MSVC intrinsics if the clz and clzll builtins are not available. +#if FMT_MSC_VERSION && !defined(FMT_BUILTIN_CLZLL) && \ + !defined(FMT_BUILTIN_CTZLL) +FMT_BEGIN_NAMESPACE +namespace detail { +// Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning. +# if !defined(__clang__) +# pragma intrinsic(_BitScanForward) +# pragma intrinsic(_BitScanReverse) +# if defined(_WIN64) +# pragma intrinsic(_BitScanForward64) +# pragma intrinsic(_BitScanReverse64) +# endif +# endif + +inline auto clz(uint32_t x) -> int { + unsigned long r = 0; + _BitScanReverse(&r, x); + FMT_ASSERT(x != 0, ""); + // Static analysis complains about using uninitialized data + // "r", but the only way that can happen is if "x" is 0, + // which the callers guarantee to not happen. + FMT_MSC_WARNING(suppress : 6102) + return 31 ^ static_cast<int>(r); +} +# define FMT_BUILTIN_CLZ(n) detail::clz(n) + +inline auto clzll(uint64_t x) -> int { + unsigned long r = 0; +# ifdef _WIN64 + _BitScanReverse64(&r, x); +# else + // Scan the high 32 bits. + if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) return 63 ^ (r + 32); + // Scan the low 32 bits. + _BitScanReverse(&r, static_cast<uint32_t>(x)); +# endif + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. + return 63 ^ static_cast<int>(r); +} +# define FMT_BUILTIN_CLZLL(n) detail::clzll(n) + +inline auto ctz(uint32_t x) -> int { + unsigned long r = 0; + _BitScanForward(&r, x); + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. + return static_cast<int>(r); +} +# define FMT_BUILTIN_CTZ(n) detail::ctz(n) + +inline auto ctzll(uint64_t x) -> int { + unsigned long r = 0; + FMT_ASSERT(x != 0, ""); + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. +# ifdef _WIN64 + _BitScanForward64(&r, x); +# else + // Scan the low 32 bits. + if (_BitScanForward(&r, static_cast<uint32_t>(x))) return static_cast<int>(r); + // Scan the high 32 bits. + _BitScanForward(&r, static_cast<uint32_t>(x >> 32)); + r += 32; +# endif + return static_cast<int>(r); +} +# define FMT_BUILTIN_CTZLL(n) detail::ctzll(n) +} // namespace detail +FMT_END_NAMESPACE +#endif + +FMT_BEGIN_NAMESPACE +namespace detail { + +FMT_CONSTEXPR inline void abort_fuzzing_if(bool condition) { + ignore_unused(condition); +#ifdef FMT_FUZZ + if (condition) throw std::runtime_error("fuzzing limit reached"); +#endif +} + +template <typename Streambuf> class formatbuf : public Streambuf { + private: + using char_type = typename Streambuf::char_type; + using streamsize = decltype(std::declval<Streambuf>().sputn(nullptr, 0)); + using int_type = typename Streambuf::int_type; + using traits_type = typename Streambuf::traits_type; + + buffer<char_type>& buffer_; + + public: + explicit formatbuf(buffer<char_type>& buf) : buffer_(buf) {} + + protected: + // The put area is always empty. This makes the implementation simpler and has + // the advantage that the streambuf and the buffer are always in sync and + // sputc never writes into uninitialized memory. A disadvantage is that each + // call to sputc always results in a (virtual) call to overflow. There is no + // disadvantage here for sputn since this always results in a call to xsputn. + + auto overflow(int_type ch) -> int_type override { + if (!traits_type::eq_int_type(ch, traits_type::eof())) + buffer_.push_back(static_cast<char_type>(ch)); + return ch; + } + + auto xsputn(const char_type* s, streamsize count) -> streamsize override { + buffer_.append(s, s + count); + return count; + } +}; + +// Implementation of std::bit_cast for pre-C++20. +template <typename To, typename From, FMT_ENABLE_IF(sizeof(To) == sizeof(From))> +FMT_CONSTEXPR20 auto bit_cast(const From& from) -> To { +#ifdef __cpp_lib_bit_cast + if (is_constant_evaluated()) return std::bit_cast<To>(from); +#endif + auto to = To(); + std::memcpy(&to, &from, sizeof(to)); + return to; +} + +inline auto is_big_endian() -> bool { +#ifdef _WIN32 + return false; +#elif defined(__BIG_ENDIAN__) + return true; +#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) + return __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__; +#else + struct bytes { + char data[sizeof(int)]; + }; + return bit_cast<bytes>(1).data[0] == 0; +#endif +} + +class uint128_fallback { + private: + uint64_t lo_, hi_; + + friend uint128_fallback umul128(uint64_t x, uint64_t y) noexcept; + + public: + constexpr uint128_fallback(uint64_t hi, uint64_t lo) : lo_(lo), hi_(hi) {} + constexpr uint128_fallback(uint64_t value = 0) : lo_(value), hi_(0) {} + + constexpr uint64_t high() const noexcept { return hi_; } + constexpr uint64_t low() const noexcept { return lo_; } + + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + constexpr explicit operator T() const { + return static_cast<T>(lo_); + } + + friend constexpr auto operator==(const uint128_fallback& lhs, + const uint128_fallback& rhs) -> bool { + return lhs.hi_ == rhs.hi_ && lhs.lo_ == rhs.lo_; + } + friend constexpr auto operator!=(const uint128_fallback& lhs, + const uint128_fallback& rhs) -> bool { + return !(lhs == rhs); + } + friend constexpr auto operator>(const uint128_fallback& lhs, + const uint128_fallback& rhs) -> bool { + return lhs.hi_ != rhs.hi_ ? lhs.hi_ > rhs.hi_ : lhs.lo_ > rhs.lo_; + } + friend constexpr auto operator|(const uint128_fallback& lhs, + const uint128_fallback& rhs) + -> uint128_fallback { + return {lhs.hi_ | rhs.hi_, lhs.lo_ | rhs.lo_}; + } + friend constexpr auto operator&(const uint128_fallback& lhs, + const uint128_fallback& rhs) + -> uint128_fallback { + return {lhs.hi_ & rhs.hi_, lhs.lo_ & rhs.lo_}; + } + friend auto operator+(const uint128_fallback& lhs, + const uint128_fallback& rhs) -> uint128_fallback { + auto result = uint128_fallback(lhs); + result += rhs; + return result; + } + friend auto operator*(const uint128_fallback& lhs, uint32_t rhs) + -> uint128_fallback { + FMT_ASSERT(lhs.hi_ == 0, ""); + uint64_t hi = (lhs.lo_ >> 32) * rhs; + uint64_t lo = (lhs.lo_ & ~uint32_t()) * rhs; + uint64_t new_lo = (hi << 32) + lo; + return {(hi >> 32) + (new_lo < lo ? 1 : 0), new_lo}; + } + friend auto operator-(const uint128_fallback& lhs, uint64_t rhs) + -> uint128_fallback { + return {lhs.hi_ - (lhs.lo_ < rhs ? 1 : 0), lhs.lo_ - rhs}; + } + FMT_CONSTEXPR auto operator>>(int shift) const -> uint128_fallback { + if (shift == 64) return {0, hi_}; + return {hi_ >> shift, (hi_ << (64 - shift)) | (lo_ >> shift)}; + } + FMT_CONSTEXPR auto operator<<(int shift) const -> uint128_fallback { + if (shift == 64) return {lo_, 0}; + return {hi_ << shift | (lo_ >> (64 - shift)), (lo_ << shift)}; + } + FMT_CONSTEXPR auto operator>>=(int shift) -> uint128_fallback& { + return *this = *this >> shift; + } + FMT_CONSTEXPR void operator+=(uint128_fallback n) { + uint64_t new_lo = lo_ + n.lo_; + uint64_t new_hi = hi_ + n.hi_ + (new_lo < lo_ ? 1 : 0); + FMT_ASSERT(new_hi >= hi_, ""); + lo_ = new_lo; + hi_ = new_hi; + } + + FMT_CONSTEXPR20 uint128_fallback& operator+=(uint64_t n) noexcept { + if (is_constant_evaluated()) { + lo_ += n; + hi_ += (lo_ < n ? 1 : 0); + return *this; + } +#if FMT_HAS_BUILTIN(__builtin_addcll) + unsigned long long carry; + lo_ = __builtin_addcll(lo_, n, 0, &carry); + hi_ += carry; +#elif FMT_HAS_BUILTIN(__builtin_ia32_addcarryx_u64) + unsigned long long result; + auto carry = __builtin_ia32_addcarryx_u64(0, lo_, n, &result); + lo_ = result; + hi_ += carry; +#elif defined(_MSC_VER) && defined(_M_X64) + auto carry = _addcarry_u64(0, lo_, n, &lo_); + _addcarry_u64(carry, hi_, 0, &hi_); +#else + lo_ += n; + hi_ += (lo_ < n ? 1 : 0); +#endif + return *this; + } +}; + +using uint128_t = conditional_t<FMT_USE_INT128, uint128_opt, uint128_fallback>; + +#ifdef UINTPTR_MAX +using uintptr_t = ::uintptr_t; +#else +using uintptr_t = uint128_t; +#endif + +// Returns the largest possible value for type T. Same as +// std::numeric_limits<T>::max() but shorter and not affected by the max macro. +template <typename T> constexpr auto max_value() -> T { + return (std::numeric_limits<T>::max)(); +} +template <typename T> constexpr auto num_bits() -> int { + return std::numeric_limits<T>::digits; +} +// std::numeric_limits<T>::digits may return 0 for 128-bit ints. +template <> constexpr auto num_bits<int128_opt>() -> int { return 128; } +template <> constexpr auto num_bits<uint128_t>() -> int { return 128; } + +// A heterogeneous bit_cast used for converting 96-bit long double to uint128_t +// and 128-bit pointers to uint128_fallback. +template <typename To, typename From, FMT_ENABLE_IF(sizeof(To) > sizeof(From))> +inline auto bit_cast(const From& from) -> To { + constexpr auto size = static_cast<int>(sizeof(From) / sizeof(unsigned)); + struct data_t { + unsigned value[static_cast<unsigned>(size)]; + } data = bit_cast<data_t>(from); + auto result = To(); + if (const_check(is_big_endian())) { + for (int i = 0; i < size; ++i) + result = (result << num_bits<unsigned>()) | data.value[i]; + } else { + for (int i = size - 1; i >= 0; --i) + result = (result << num_bits<unsigned>()) | data.value[i]; + } + return result; +} + +FMT_INLINE void assume(bool condition) { + (void)condition; +#if FMT_HAS_BUILTIN(__builtin_assume) && !FMT_ICC_VERSION + __builtin_assume(condition); +#endif +} + +// An approximation of iterator_t for pre-C++20 systems. +template <typename T> +using iterator_t = decltype(std::begin(std::declval<T&>())); +template <typename T> using sentinel_t = decltype(std::end(std::declval<T&>())); + +// A workaround for std::string not having mutable data() until C++17. +template <typename Char> +inline auto get_data(std::basic_string<Char>& s) -> Char* { + return &s[0]; +} +template <typename Container> +inline auto get_data(Container& c) -> typename Container::value_type* { + return c.data(); +} + +#if defined(_SECURE_SCL) && _SECURE_SCL +// Make a checked iterator to avoid MSVC warnings. +template <typename T> using checked_ptr = stdext::checked_array_iterator<T*>; +template <typename T> +constexpr auto make_checked(T* p, size_t size) -> checked_ptr<T> { + return {p, size}; +} +#else +template <typename T> using checked_ptr = T*; +template <typename T> constexpr auto make_checked(T* p, size_t) -> T* { + return p; +} +#endif + +// Attempts to reserve space for n extra characters in the output range. +// Returns a pointer to the reserved range or a reference to it. +template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)> +#if FMT_CLANG_VERSION >= 307 && !FMT_ICC_VERSION +__attribute__((no_sanitize("undefined"))) +#endif +inline auto +reserve(std::back_insert_iterator<Container> it, size_t n) + -> checked_ptr<typename Container::value_type> { + Container& c = get_container(it); + size_t size = c.size(); + c.resize(size + n); + return make_checked(get_data(c) + size, n); +} + +template <typename T> +inline auto reserve(buffer_appender<T> it, size_t n) -> buffer_appender<T> { + buffer<T>& buf = get_container(it); + buf.try_reserve(buf.size() + n); + return it; +} + +template <typename Iterator> +constexpr auto reserve(Iterator& it, size_t) -> Iterator& { + return it; +} + +template <typename OutputIt> +using reserve_iterator = + remove_reference_t<decltype(reserve(std::declval<OutputIt&>(), 0))>; + +template <typename T, typename OutputIt> +constexpr auto to_pointer(OutputIt, size_t) -> T* { + return nullptr; +} +template <typename T> auto to_pointer(buffer_appender<T> it, size_t n) -> T* { + buffer<T>& buf = get_container(it); + auto size = buf.size(); + if (buf.capacity() < size + n) return nullptr; + buf.try_resize(size + n); + return buf.data() + size; +} + +template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)> +inline auto base_iterator(std::back_insert_iterator<Container>& it, + checked_ptr<typename Container::value_type>) + -> std::back_insert_iterator<Container> { + return it; +} + +template <typename Iterator> +constexpr auto base_iterator(Iterator, Iterator it) -> Iterator { + return it; +} + +// <algorithm> is spectacularly slow to compile in C++20 so use a simple fill_n +// instead (#1998). +template <typename OutputIt, typename Size, typename T> +FMT_CONSTEXPR auto fill_n(OutputIt out, Size count, const T& value) + -> OutputIt { + for (Size i = 0; i < count; ++i) *out++ = value; + return out; +} +template <typename T, typename Size> +FMT_CONSTEXPR20 auto fill_n(T* out, Size count, char value) -> T* { + if (is_constant_evaluated()) { + return fill_n<T*, Size, T>(out, count, value); + } + std::memset(out, value, to_unsigned(count)); + return out + count; +} + +#ifdef __cpp_char8_t +using char8_type = char8_t; +#else +enum char8_type : unsigned char {}; +#endif + +template <typename OutChar, typename InputIt, typename OutputIt> +FMT_CONSTEXPR FMT_NOINLINE auto copy_str_noinline(InputIt begin, InputIt end, + OutputIt out) -> OutputIt { + return copy_str<OutChar>(begin, end, out); +} + +// A public domain branchless UTF-8 decoder by Christopher Wellons: +// https://github.com/skeeto/branchless-utf8 +/* Decode the next character, c, from s, reporting errors in e. + * + * Since this is a branchless decoder, four bytes will be read from the + * buffer regardless of the actual length of the next character. This + * means the buffer _must_ have at least three bytes of zero padding + * following the end of the data stream. + * + * Errors are reported in e, which will be non-zero if the parsed + * character was somehow invalid: invalid byte sequence, non-canonical + * encoding, or a surrogate half. + * + * The function returns a pointer to the next character. When an error + * occurs, this pointer will be a guess that depends on the particular + * error, but it will always advance at least one byte. + */ +FMT_CONSTEXPR inline auto utf8_decode(const char* s, uint32_t* c, int* e) + -> const char* { + constexpr const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07}; + constexpr const uint32_t mins[] = {4194304, 0, 128, 2048, 65536}; + constexpr const int shiftc[] = {0, 18, 12, 6, 0}; + constexpr const int shifte[] = {0, 6, 4, 2, 0}; + + int len = code_point_length(s); + const char* next = s + len; + + // Assume a four-byte character and load four bytes. Unused bits are + // shifted out. + *c = uint32_t(s[0] & masks[len]) << 18; + *c |= uint32_t(s[1] & 0x3f) << 12; + *c |= uint32_t(s[2] & 0x3f) << 6; + *c |= uint32_t(s[3] & 0x3f) << 0; + *c >>= shiftc[len]; + + // Accumulate the various error conditions. + using uchar = unsigned char; + *e = (*c < mins[len]) << 6; // non-canonical encoding + *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half? + *e |= (*c > 0x10FFFF) << 8; // out of range? + *e |= (uchar(s[1]) & 0xc0) >> 2; + *e |= (uchar(s[2]) & 0xc0) >> 4; + *e |= uchar(s[3]) >> 6; + *e ^= 0x2a; // top two bits of each tail byte correct? + *e >>= shifte[len]; + + return next; +} + +constexpr uint32_t invalid_code_point = ~uint32_t(); + +// Invokes f(cp, sv) for every code point cp in s with sv being the string view +// corresponding to the code point. cp is invalid_code_point on error. +template <typename F> +FMT_CONSTEXPR void for_each_codepoint(string_view s, F f) { + auto decode = [f](const char* buf_ptr, const char* ptr) { + auto cp = uint32_t(); + auto error = 0; + auto end = utf8_decode(buf_ptr, &cp, &error); + bool result = f(error ? invalid_code_point : cp, + string_view(ptr, to_unsigned(end - buf_ptr))); + return result ? end : nullptr; + }; + auto p = s.data(); + const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars. + if (s.size() >= block_size) { + for (auto end = p + s.size() - block_size + 1; p < end;) { + p = decode(p, p); + if (!p) return; + } + } + if (auto num_chars_left = s.data() + s.size() - p) { + char buf[2 * block_size - 1] = {}; + copy_str<char>(p, p + num_chars_left, buf); + const char* buf_ptr = buf; + do { + auto end = decode(buf_ptr, p); + if (!end) return; + p += end - buf_ptr; + buf_ptr = end; + } while (buf_ptr - buf < num_chars_left); + } +} + +template <typename Char> +inline auto compute_width(basic_string_view<Char> s) -> size_t { + return s.size(); +} + +// Computes approximate display width of a UTF-8 string. +FMT_CONSTEXPR inline size_t compute_width(string_view s) { + size_t num_code_points = 0; + // It is not a lambda for compatibility with C++14. + struct count_code_points { + size_t* count; + FMT_CONSTEXPR auto operator()(uint32_t cp, string_view) const -> bool { + *count += detail::to_unsigned( + 1 + + (cp >= 0x1100 && + (cp <= 0x115f || // Hangul Jamo init. consonants + cp == 0x2329 || // LEFT-POINTING ANGLE BRACKET + cp == 0x232a || // RIGHT-POINTING ANGLE BRACKET + // CJK ... Yi except IDEOGRAPHIC HALF FILL SPACE: + (cp >= 0x2e80 && cp <= 0xa4cf && cp != 0x303f) || + (cp >= 0xac00 && cp <= 0xd7a3) || // Hangul Syllables + (cp >= 0xf900 && cp <= 0xfaff) || // CJK Compatibility Ideographs + (cp >= 0xfe10 && cp <= 0xfe19) || // Vertical Forms + (cp >= 0xfe30 && cp <= 0xfe6f) || // CJK Compatibility Forms + (cp >= 0xff00 && cp <= 0xff60) || // Fullwidth Forms + (cp >= 0xffe0 && cp <= 0xffe6) || // Fullwidth Forms + (cp >= 0x20000 && cp <= 0x2fffd) || // CJK + (cp >= 0x30000 && cp <= 0x3fffd) || + // Miscellaneous Symbols and Pictographs + Emoticons: + (cp >= 0x1f300 && cp <= 0x1f64f) || + // Supplemental Symbols and Pictographs: + (cp >= 0x1f900 && cp <= 0x1f9ff)))); + return true; + } + }; + for_each_codepoint(s, count_code_points{&num_code_points}); + return num_code_points; +} + +inline auto compute_width(basic_string_view<char8_type> s) -> size_t { + return compute_width( + string_view(reinterpret_cast<const char*>(s.data()), s.size())); +} + +template <typename Char> +inline auto code_point_index(basic_string_view<Char> s, size_t n) -> size_t { + size_t size = s.size(); + return n < size ? n : size; +} + +// Calculates the index of the nth code point in a UTF-8 string. +inline auto code_point_index(string_view s, size_t n) -> size_t { + const char* data = s.data(); + size_t num_code_points = 0; + for (size_t i = 0, size = s.size(); i != size; ++i) { + if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) return i; + } + return s.size(); +} + +inline auto code_point_index(basic_string_view<char8_type> s, size_t n) + -> size_t { + return code_point_index( + string_view(reinterpret_cast<const char*>(s.data()), s.size()), n); +} + +#ifndef FMT_USE_FLOAT128 +# ifdef __SIZEOF_FLOAT128__ +# define FMT_USE_FLOAT128 1 +# else +# define FMT_USE_FLOAT128 0 +# endif +#endif +#if FMT_USE_FLOAT128 +using float128 = __float128; +#else +using float128 = void; +#endif +template <typename T> using is_float128 = std::is_same<T, float128>; + +template <typename T> +using is_floating_point = + bool_constant<std::is_floating_point<T>::value || is_float128<T>::value>; + +template <typename T, bool = std::is_floating_point<T>::value> +struct is_fast_float : bool_constant<std::numeric_limits<T>::is_iec559 && + sizeof(T) <= sizeof(double)> {}; +template <typename T> struct is_fast_float<T, false> : std::false_type {}; + +template <typename T> +using is_double_double = bool_constant<std::numeric_limits<T>::digits == 106>; + +#ifndef FMT_USE_FULL_CACHE_DRAGONBOX +# define FMT_USE_FULL_CACHE_DRAGONBOX 0 +#endif + +template <typename T> +template <typename U> +void buffer<T>::append(const U* begin, const U* end) { + while (begin != end) { + auto count = to_unsigned(end - begin); + try_reserve(size_ + count); + auto free_cap = capacity_ - size_; + if (free_cap < count) count = free_cap; + std::uninitialized_copy_n(begin, count, make_checked(ptr_ + size_, count)); + size_ += count; + begin += count; + } +} + +template <typename T, typename Enable = void> +struct is_locale : std::false_type {}; +template <typename T> +struct is_locale<T, void_t<decltype(T::classic())>> : std::true_type {}; +} // namespace detail + +FMT_MODULE_EXPORT_BEGIN + +// The number of characters to store in the basic_memory_buffer object itself +// to avoid dynamic memory allocation. +enum { inline_buffer_size = 500 }; + +/** + \rst + A dynamically growing memory buffer for trivially copyable/constructible types + with the first ``SIZE`` elements stored in the object itself. + + You can use the ``memory_buffer`` type alias for ``char`` instead. + + **Example**:: + + auto out = fmt::memory_buffer(); + format_to(std::back_inserter(out), "The answer is {}.", 42); + + This will append the following output to the ``out`` object: + + .. code-block:: none + + The answer is 42. + + The output can be converted to an ``std::string`` with ``to_string(out)``. + \endrst + */ +template <typename T, size_t SIZE = inline_buffer_size, + typename Allocator = std::allocator<T>> +class basic_memory_buffer final : public detail::buffer<T> { + private: + T store_[SIZE]; + + // Don't inherit from Allocator avoid generating type_info for it. + Allocator alloc_; + + // Deallocate memory allocated by the buffer. + FMT_CONSTEXPR20 void deallocate() { + T* data = this->data(); + if (data != store_) alloc_.deallocate(data, this->capacity()); + } + + protected: + FMT_CONSTEXPR20 void grow(size_t size) override; + + public: + using value_type = T; + using const_reference = const T&; + + FMT_CONSTEXPR20 explicit basic_memory_buffer( + const Allocator& alloc = Allocator()) + : alloc_(alloc) { + this->set(store_, SIZE); + if (detail::is_constant_evaluated()) detail::fill_n(store_, SIZE, T()); + } + FMT_CONSTEXPR20 ~basic_memory_buffer() { deallocate(); } + + private: + // Move data from other to this buffer. + FMT_CONSTEXPR20 void move(basic_memory_buffer& other) { + alloc_ = std::move(other.alloc_); + T* data = other.data(); + size_t size = other.size(), capacity = other.capacity(); + if (data == other.store_) { + this->set(store_, capacity); + detail::copy_str<T>(other.store_, other.store_ + size, + detail::make_checked(store_, capacity)); + } else { + this->set(data, capacity); + // Set pointer to the inline array so that delete is not called + // when deallocating. + other.set(other.store_, 0); + other.clear(); + } + this->resize(size); + } + + public: + /** + \rst + Constructs a :class:`fmt::basic_memory_buffer` object moving the content + of the other object to it. + \endrst + */ + FMT_CONSTEXPR20 basic_memory_buffer(basic_memory_buffer&& other) noexcept { + move(other); + } + + /** + \rst + Moves the content of the other ``basic_memory_buffer`` object to this one. + \endrst + */ + auto operator=(basic_memory_buffer&& other) noexcept -> basic_memory_buffer& { + FMT_ASSERT(this != &other, ""); + deallocate(); + move(other); + return *this; + } + + // Returns a copy of the allocator associated with this buffer. + auto get_allocator() const -> Allocator { return alloc_; } + + /** + Resizes the buffer to contain *count* elements. If T is a POD type new + elements may not be initialized. + */ + FMT_CONSTEXPR20 void resize(size_t count) { this->try_resize(count); } + + /** Increases the buffer capacity to *new_capacity*. */ + void reserve(size_t new_capacity) { this->try_reserve(new_capacity); } + + // Directly append data into the buffer + using detail::buffer<T>::append; + template <typename ContiguousRange> + void append(const ContiguousRange& range) { + append(range.data(), range.data() + range.size()); + } +}; + +template <typename T, size_t SIZE, typename Allocator> +FMT_CONSTEXPR20 void basic_memory_buffer<T, SIZE, Allocator>::grow( + size_t size) { + detail::abort_fuzzing_if(size > 5000); + const size_t max_size = std::allocator_traits<Allocator>::max_size(alloc_); + size_t old_capacity = this->capacity(); + size_t new_capacity = old_capacity + old_capacity / 2; + if (size > new_capacity) + new_capacity = size; + else if (new_capacity > max_size) + new_capacity = size > max_size ? size : max_size; + T* old_data = this->data(); + T* new_data = + std::allocator_traits<Allocator>::allocate(alloc_, new_capacity); + // The following code doesn't throw, so the raw pointer above doesn't leak. + std::uninitialized_copy(old_data, old_data + this->size(), + detail::make_checked(new_data, new_capacity)); + this->set(new_data, new_capacity); + // deallocate must not throw according to the standard, but even if it does, + // the buffer already uses the new storage and will deallocate it in + // destructor. + if (old_data != store_) alloc_.deallocate(old_data, old_capacity); +} + +using memory_buffer = basic_memory_buffer<char>; + +template <typename T, size_t SIZE, typename Allocator> +struct is_contiguous<basic_memory_buffer<T, SIZE, Allocator>> : std::true_type { +}; + +namespace detail { +FMT_API void print(std::FILE*, string_view); +} + +/** A formatting error such as invalid format string. */ +FMT_CLASS_API +class FMT_API format_error : public std::runtime_error { + public: + explicit format_error(const char* message) : std::runtime_error(message) {} + explicit format_error(const std::string& message) + : std::runtime_error(message) {} + format_error(const format_error&) = default; + format_error& operator=(const format_error&) = default; + format_error(format_error&&) = default; + format_error& operator=(format_error&&) = default; + ~format_error() noexcept override FMT_MSC_DEFAULT; +}; + +namespace detail_exported { +#if FMT_USE_NONTYPE_TEMPLATE_ARGS +template <typename Char, size_t N> struct fixed_string { + constexpr fixed_string(const Char (&str)[N]) { + detail::copy_str<Char, const Char*, Char*>(static_cast<const Char*>(str), + str + N, data); + } + Char data[N] = {}; +}; +#endif + +// Converts a compile-time string to basic_string_view. +template <typename Char, size_t N> +constexpr auto compile_string_to_view(const Char (&s)[N]) + -> basic_string_view<Char> { + // Remove trailing NUL character if needed. Won't be present if this is used + // with a raw character array (i.e. not defined as a string). + return {s, N - (std::char_traits<Char>::to_int_type(s[N - 1]) == 0 ? 1 : 0)}; +} +template <typename Char> +constexpr auto compile_string_to_view(detail::std_string_view<Char> s) + -> basic_string_view<Char> { + return {s.data(), s.size()}; +} +} // namespace detail_exported + +FMT_BEGIN_DETAIL_NAMESPACE + +template <typename T> struct is_integral : std::is_integral<T> {}; +template <> struct is_integral<int128_opt> : std::true_type {}; +template <> struct is_integral<uint128_t> : std::true_type {}; + +template <typename T> +using is_signed = + std::integral_constant<bool, std::numeric_limits<T>::is_signed || + std::is_same<T, int128_opt>::value>; + +// Returns true if value is negative, false otherwise. +// Same as `value < 0` but doesn't produce warnings if T is an unsigned type. +template <typename T, FMT_ENABLE_IF(is_signed<T>::value)> +constexpr auto is_negative(T value) -> bool { + return value < 0; +} +template <typename T, FMT_ENABLE_IF(!is_signed<T>::value)> +constexpr auto is_negative(T) -> bool { + return false; +} + +template <typename T> +FMT_CONSTEXPR auto is_supported_floating_point(T) -> bool { + if (std::is_same<T, float>()) return FMT_USE_FLOAT; + if (std::is_same<T, double>()) return FMT_USE_DOUBLE; + if (std::is_same<T, long double>()) return FMT_USE_LONG_DOUBLE; + return true; +} + +// Smallest of uint32_t, uint64_t, uint128_t that is large enough to +// represent all values of an integral type T. +template <typename T> +using uint32_or_64_or_128_t = + conditional_t<num_bits<T>() <= 32 && !FMT_REDUCE_INT_INSTANTIATIONS, + uint32_t, + conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>>; +template <typename T> +using uint64_or_128_t = conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>; + +#define FMT_POWERS_OF_10(factor) \ + factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \ + (factor)*1000000, (factor)*10000000, (factor)*100000000, \ + (factor)*1000000000 + +// Converts value in the range [0, 100) to a string. +constexpr const char* digits2(size_t value) { + // GCC generates slightly better code when value is pointer-size. + return &"0001020304050607080910111213141516171819" + "2021222324252627282930313233343536373839" + "4041424344454647484950515253545556575859" + "6061626364656667686970717273747576777879" + "8081828384858687888990919293949596979899"[value * 2]; +} + +// Sign is a template parameter to workaround a bug in gcc 4.8. +template <typename Char, typename Sign> constexpr Char sign(Sign s) { +#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 604 + static_assert(std::is_same<Sign, sign_t>::value, ""); +#endif + return static_cast<Char>("\0-+ "[s]); +} + +template <typename T> FMT_CONSTEXPR auto count_digits_fallback(T n) -> int { + int count = 1; + for (;;) { + // Integer division is slow so do it for a group of four digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + if (n < 10) return count; + if (n < 100) return count + 1; + if (n < 1000) return count + 2; + if (n < 10000) return count + 3; + n /= 10000u; + count += 4; + } +} +#if FMT_USE_INT128 +FMT_CONSTEXPR inline auto count_digits(uint128_opt n) -> int { + return count_digits_fallback(n); +} +#endif + +#ifdef FMT_BUILTIN_CLZLL +// It is a separate function rather than a part of count_digits to workaround +// the lack of static constexpr in constexpr functions. +inline auto do_count_digits(uint64_t n) -> int { + // This has comparable performance to the version by Kendall Willets + // (https://github.com/fmtlib/format-benchmark/blob/master/digits10) + // but uses smaller tables. + // Maps bsr(n) to ceil(log10(pow(2, bsr(n) + 1) - 1)). + static constexpr uint8_t bsr2log10[] = { + 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, + 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, + 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15, + 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20}; + auto t = bsr2log10[FMT_BUILTIN_CLZLL(n | 1) ^ 63]; + static constexpr const uint64_t zero_or_powers_of_10[] = { + 0, 0, FMT_POWERS_OF_10(1U), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; + return t - (n < zero_or_powers_of_10[t]); +} +#endif + +// Returns the number of decimal digits in n. Leading zeros are not counted +// except for n == 0 in which case count_digits returns 1. +FMT_CONSTEXPR20 inline auto count_digits(uint64_t n) -> int { +#ifdef FMT_BUILTIN_CLZLL + if (!is_constant_evaluated()) { + return do_count_digits(n); + } +#endif + return count_digits_fallback(n); +} + +// Counts the number of digits in n. BITS = log2(radix). +template <int BITS, typename UInt> +FMT_CONSTEXPR auto count_digits(UInt n) -> int { +#ifdef FMT_BUILTIN_CLZ + if (!is_constant_evaluated() && num_bits<UInt>() == 32) + return (FMT_BUILTIN_CLZ(static_cast<uint32_t>(n) | 1) ^ 31) / BITS + 1; +#endif + // Lambda avoids unreachable code warnings from NVHPC. + return [](UInt m) { + int num_digits = 0; + do { + ++num_digits; + } while ((m >>= BITS) != 0); + return num_digits; + }(n); +} + +#ifdef FMT_BUILTIN_CLZ +// It is a separate function rather than a part of count_digits to workaround +// the lack of static constexpr in constexpr functions. +FMT_INLINE auto do_count_digits(uint32_t n) -> int { +// An optimization by Kendall Willets from https://bit.ly/3uOIQrB. +// This increments the upper 32 bits (log10(T) - 1) when >= T is added. +# define FMT_INC(T) (((sizeof(# T) - 1ull) << 32) - T) + static constexpr uint64_t table[] = { + FMT_INC(0), FMT_INC(0), FMT_INC(0), // 8 + FMT_INC(10), FMT_INC(10), FMT_INC(10), // 64 + FMT_INC(100), FMT_INC(100), FMT_INC(100), // 512 + FMT_INC(1000), FMT_INC(1000), FMT_INC(1000), // 4096 + FMT_INC(10000), FMT_INC(10000), FMT_INC(10000), // 32k + FMT_INC(100000), FMT_INC(100000), FMT_INC(100000), // 256k + FMT_INC(1000000), FMT_INC(1000000), FMT_INC(1000000), // 2048k + FMT_INC(10000000), FMT_INC(10000000), FMT_INC(10000000), // 16M + FMT_INC(100000000), FMT_INC(100000000), FMT_INC(100000000), // 128M + FMT_INC(1000000000), FMT_INC(1000000000), FMT_INC(1000000000), // 1024M + FMT_INC(1000000000), FMT_INC(1000000000) // 4B + }; + auto inc = table[FMT_BUILTIN_CLZ(n | 1) ^ 31]; + return static_cast<int>((n + inc) >> 32); +} +#endif + +// Optional version of count_digits for better performance on 32-bit platforms. +FMT_CONSTEXPR20 inline auto count_digits(uint32_t n) -> int { +#ifdef FMT_BUILTIN_CLZ + if (!is_constant_evaluated()) { + return do_count_digits(n); + } +#endif + return count_digits_fallback(n); +} + +template <typename Int> constexpr auto digits10() noexcept -> int { + return std::numeric_limits<Int>::digits10; +} +template <> constexpr auto digits10<int128_opt>() noexcept -> int { return 38; } +template <> constexpr auto digits10<uint128_t>() noexcept -> int { return 38; } + +template <typename Char> struct thousands_sep_result { + std::string grouping; + Char thousands_sep; +}; + +template <typename Char> +FMT_API auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result<Char>; +template <typename Char> +inline auto thousands_sep(locale_ref loc) -> thousands_sep_result<Char> { + auto result = thousands_sep_impl<char>(loc); + return {result.grouping, Char(result.thousands_sep)}; +} +template <> +inline auto thousands_sep(locale_ref loc) -> thousands_sep_result<wchar_t> { + return thousands_sep_impl<wchar_t>(loc); +} + +template <typename Char> +FMT_API auto decimal_point_impl(locale_ref loc) -> Char; +template <typename Char> inline auto decimal_point(locale_ref loc) -> Char { + return Char(decimal_point_impl<char>(loc)); +} +template <> inline auto decimal_point(locale_ref loc) -> wchar_t { + return decimal_point_impl<wchar_t>(loc); +} + +// Compares two characters for equality. +template <typename Char> auto equal2(const Char* lhs, const char* rhs) -> bool { + return lhs[0] == Char(rhs[0]) && lhs[1] == Char(rhs[1]); +} +inline auto equal2(const char* lhs, const char* rhs) -> bool { + return memcmp(lhs, rhs, 2) == 0; +} + +// Copies two characters from src to dst. +template <typename Char> +FMT_CONSTEXPR20 FMT_INLINE void copy2(Char* dst, const char* src) { + if (!is_constant_evaluated() && sizeof(Char) == sizeof(char)) { + memcpy(dst, src, 2); + return; + } + *dst++ = static_cast<Char>(*src++); + *dst = static_cast<Char>(*src); +} + +template <typename Iterator> struct format_decimal_result { + Iterator begin; + Iterator end; +}; + +// Formats a decimal unsigned integer value writing into out pointing to a +// buffer of specified size. The caller must ensure that the buffer is large +// enough. +template <typename Char, typename UInt> +FMT_CONSTEXPR20 auto format_decimal(Char* out, UInt value, int size) + -> format_decimal_result<Char*> { + FMT_ASSERT(size >= count_digits(value), "invalid digit count"); + out += size; + Char* end = out; + while (value >= 100) { + // Integer division is slow so do it for a group of two digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + out -= 2; + copy2(out, digits2(static_cast<size_t>(value % 100))); + value /= 100; + } + if (value < 10) { + *--out = static_cast<Char>('0' + value); + return {out, end}; + } + out -= 2; + copy2(out, digits2(static_cast<size_t>(value))); + return {out, end}; +} + +template <typename Char, typename UInt, typename Iterator, + FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<Iterator>>::value)> +inline auto format_decimal(Iterator out, UInt value, int size) + -> format_decimal_result<Iterator> { + // Buffer is large enough to hold all digits (digits10 + 1). + Char buffer[digits10<UInt>() + 1]; + auto end = format_decimal(buffer, value, size).end; + return {out, detail::copy_str_noinline<Char>(buffer, end, out)}; +} + +template <unsigned BASE_BITS, typename Char, typename UInt> +FMT_CONSTEXPR auto format_uint(Char* buffer, UInt value, int num_digits, + bool upper = false) -> Char* { + buffer += num_digits; + Char* end = buffer; + do { + const char* digits = upper ? "0123456789ABCDEF" : "0123456789abcdef"; + unsigned digit = static_cast<unsigned>(value & ((1 << BASE_BITS) - 1)); + *--buffer = static_cast<Char>(BASE_BITS < 4 ? static_cast<char>('0' + digit) + : digits[digit]); + } while ((value >>= BASE_BITS) != 0); + return end; +} + +template <unsigned BASE_BITS, typename Char, typename It, typename UInt> +inline auto format_uint(It out, UInt value, int num_digits, bool upper = false) + -> It { + if (auto ptr = to_pointer<Char>(out, to_unsigned(num_digits))) { + format_uint<BASE_BITS>(ptr, value, num_digits, upper); + return out; + } + // Buffer should be large enough to hold all digits (digits / BASE_BITS + 1). + char buffer[num_bits<UInt>() / BASE_BITS + 1]; + format_uint<BASE_BITS>(buffer, value, num_digits, upper); + return detail::copy_str_noinline<Char>(buffer, buffer + num_digits, out); +} + +// A converter from UTF-8 to UTF-16. +class utf8_to_utf16 { + private: + basic_memory_buffer<wchar_t> buffer_; + + public: + FMT_API explicit utf8_to_utf16(string_view s); + operator basic_string_view<wchar_t>() const { return {&buffer_[0], size()}; } + auto size() const -> size_t { return buffer_.size() - 1; } + auto c_str() const -> const wchar_t* { return &buffer_[0]; } + auto str() const -> std::wstring { return {&buffer_[0], size()}; } +}; + +namespace dragonbox { + +// Type-specific information that Dragonbox uses. +template <typename T, typename Enable = void> struct float_info; + +template <> struct float_info<float> { + using carrier_uint = uint32_t; + static const int exponent_bits = 8; + static const int kappa = 1; + static const int big_divisor = 100; + static const int small_divisor = 10; + static const int min_k = -31; + static const int max_k = 46; + static const int divisibility_check_by_5_threshold = 39; + static const int case_fc_pm_half_lower_threshold = -1; + static const int shorter_interval_tie_lower_threshold = -35; + static const int shorter_interval_tie_upper_threshold = -35; +}; + +template <> struct float_info<double> { + using carrier_uint = uint64_t; + static const int exponent_bits = 11; + static const int kappa = 2; + static const int big_divisor = 1000; + static const int small_divisor = 100; + static const int min_k = -292; + static const int max_k = 326; + static const int divisibility_check_by_5_threshold = 86; + static const int case_fc_pm_half_lower_threshold = -2; + static const int shorter_interval_tie_lower_threshold = -77; + static const int shorter_interval_tie_upper_threshold = -77; +}; + +// An 80- or 128-bit floating point number. +template <typename T> +struct float_info<T, enable_if_t<std::numeric_limits<T>::digits == 64 || + std::numeric_limits<T>::digits == 113 || + is_float128<T>::value>> { + using carrier_uint = detail::uint128_t; + static const int exponent_bits = 15; +}; + +// A double-double floating point number. +template <typename T> +struct float_info<T, enable_if_t<is_double_double<T>::value>> { + using carrier_uint = detail::uint128_t; +}; + +template <typename T> struct decimal_fp { + using significand_type = typename float_info<T>::carrier_uint; + significand_type significand; + int exponent; +}; + +template <typename T> FMT_API auto to_decimal(T x) noexcept -> decimal_fp<T>; +} // namespace dragonbox + +// Returns true iff Float has the implicit bit which is not stored. +template <typename Float> constexpr bool has_implicit_bit() { + // An 80-bit FP number has a 64-bit significand an no implicit bit. + return std::numeric_limits<Float>::digits != 64; +} + +// Returns the number of significand bits stored in Float. The implicit bit is +// not counted since it is not stored. +template <typename Float> constexpr int num_significand_bits() { + // std::numeric_limits may not support __float128. + return is_float128<Float>() ? 112 + : (std::numeric_limits<Float>::digits - + (has_implicit_bit<Float>() ? 1 : 0)); +} + +template <typename Float> +constexpr auto exponent_mask() -> + typename dragonbox::float_info<Float>::carrier_uint { + using uint = typename dragonbox::float_info<Float>::carrier_uint; + return ((uint(1) << dragonbox::float_info<Float>::exponent_bits) - 1) + << num_significand_bits<Float>(); +} +template <typename Float> constexpr auto exponent_bias() -> int { + // std::numeric_limits may not support __float128. + return is_float128<Float>() ? 16383 + : std::numeric_limits<Float>::max_exponent - 1; +} + +// Writes the exponent exp in the form "[+-]d{2,3}" to buffer. +template <typename Char, typename It> +FMT_CONSTEXPR auto write_exponent(int exp, It it) -> It { + FMT_ASSERT(-10000 < exp && exp < 10000, "exponent out of range"); + if (exp < 0) { + *it++ = static_cast<Char>('-'); + exp = -exp; + } else { + *it++ = static_cast<Char>('+'); + } + if (exp >= 100) { + const char* top = digits2(to_unsigned(exp / 100)); + if (exp >= 1000) *it++ = static_cast<Char>(top[0]); + *it++ = static_cast<Char>(top[1]); + exp %= 100; + } + const char* d = digits2(to_unsigned(exp)); + *it++ = static_cast<Char>(d[0]); + *it++ = static_cast<Char>(d[1]); + return it; +} + +// A floating-point number f * pow(2, e) where F is an unsigned type. +template <typename F> struct basic_fp { + F f; + int e; + + static constexpr const int num_significand_bits = + static_cast<int>(sizeof(F) * num_bits<unsigned char>()); + + constexpr basic_fp() : f(0), e(0) {} + constexpr basic_fp(uint64_t f_val, int e_val) : f(f_val), e(e_val) {} + + // Constructs fp from an IEEE754 floating-point number. + template <typename Float> FMT_CONSTEXPR basic_fp(Float n) { assign(n); } + + // Assigns n to this and return true iff predecessor is closer than successor. + template <typename Float, FMT_ENABLE_IF(!is_double_double<Float>::value)> + FMT_CONSTEXPR auto assign(Float n) -> bool { + static_assert(std::numeric_limits<Float>::digits <= 113, "unsupported FP"); + // Assume Float is in the format [sign][exponent][significand]. + using carrier_uint = typename dragonbox::float_info<Float>::carrier_uint; + const auto num_float_significand_bits = + detail::num_significand_bits<Float>(); + const auto implicit_bit = carrier_uint(1) << num_float_significand_bits; + const auto significand_mask = implicit_bit - 1; + auto u = bit_cast<carrier_uint>(n); + f = static_cast<F>(u & significand_mask); + auto biased_e = static_cast<int>((u & exponent_mask<Float>()) >> + num_float_significand_bits); + // The predecessor is closer if n is a normalized power of 2 (f == 0) + // other than the smallest normalized number (biased_e > 1). + auto is_predecessor_closer = f == 0 && biased_e > 1; + if (biased_e == 0) + biased_e = 1; // Subnormals use biased exponent 1 (min exponent). + else if (has_implicit_bit<Float>()) + f += static_cast<F>(implicit_bit); + e = biased_e - exponent_bias<Float>() - num_float_significand_bits; + if (!has_implicit_bit<Float>()) ++e; + return is_predecessor_closer; + } + + template <typename Float, FMT_ENABLE_IF(is_double_double<Float>::value)> + FMT_CONSTEXPR auto assign(Float n) -> bool { + static_assert(std::numeric_limits<double>::is_iec559, "unsupported FP"); + return assign(static_cast<double>(n)); + } +}; + +using fp = basic_fp<unsigned long long>; + +// Normalizes the value converted from double and multiplied by (1 << SHIFT). +template <int SHIFT = 0, typename F> +FMT_CONSTEXPR basic_fp<F> normalize(basic_fp<F> value) { + // Handle subnormals. + const auto implicit_bit = F(1) << num_significand_bits<double>(); + const auto shifted_implicit_bit = implicit_bit << SHIFT; + while ((value.f & shifted_implicit_bit) == 0) { + value.f <<= 1; + --value.e; + } + // Subtract 1 to account for hidden bit. + const auto offset = basic_fp<F>::num_significand_bits - + num_significand_bits<double>() - SHIFT - 1; + value.f <<= offset; + value.e -= offset; + return value; +} + +// Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking. +FMT_CONSTEXPR inline uint64_t multiply(uint64_t lhs, uint64_t rhs) { +#if FMT_USE_INT128 + auto product = static_cast<__uint128_t>(lhs) * rhs; + auto f = static_cast<uint64_t>(product >> 64); + return (static_cast<uint64_t>(product) & (1ULL << 63)) != 0 ? f + 1 : f; +#else + // Multiply 32-bit parts of significands. + uint64_t mask = (1ULL << 32) - 1; + uint64_t a = lhs >> 32, b = lhs & mask; + uint64_t c = rhs >> 32, d = rhs & mask; + uint64_t ac = a * c, bc = b * c, ad = a * d, bd = b * d; + // Compute mid 64-bit of result and round. + uint64_t mid = (bd >> 32) + (ad & mask) + (bc & mask) + (1U << 31); + return ac + (ad >> 32) + (bc >> 32) + (mid >> 32); +#endif +} + +FMT_CONSTEXPR inline fp operator*(fp x, fp y) { + return {multiply(x.f, y.f), x.e + y.e + 64}; +} + +template <typename T = void> struct basic_data { + // Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340. + // These are generated by support/compute-powers.py. + static constexpr uint64_t pow10_significands[87] = { + 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, + 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, + 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c, + 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5, + 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, + 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7, + 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e, + 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996, + 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, + 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053, + 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f, + 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b, + 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, + 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb, + 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000, + 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984, + 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, + 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8, + 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758, + 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85, + 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, + 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25, + 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2, + 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a, + 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, + 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129, + 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85, + 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841, + 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b, + }; + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wnarrowing" +#endif + // Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding + // to significands above. + static constexpr int16_t pow10_exponents[87] = { + -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954, + -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661, + -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369, + -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77, + -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216, + 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508, + 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800, + 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066}; +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +# pragma GCC diagnostic pop +#endif + + static constexpr uint64_t power_of_10_64[20] = { + 1, FMT_POWERS_OF_10(1ULL), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; +}; + +#if FMT_CPLUSPLUS < 201703L +template <typename T> constexpr uint64_t basic_data<T>::pow10_significands[]; +template <typename T> constexpr int16_t basic_data<T>::pow10_exponents[]; +template <typename T> constexpr uint64_t basic_data<T>::power_of_10_64[]; +#endif + +// This is a struct rather than an alias to avoid shadowing warnings in gcc. +struct data : basic_data<> {}; + +// Returns a cached power of 10 `c_k = c_k.f * pow(2, c_k.e)` such that its +// (binary) exponent satisfies `min_exponent <= c_k.e <= min_exponent + 28`. +FMT_CONSTEXPR inline fp get_cached_power(int min_exponent, + int& pow10_exponent) { + const int shift = 32; + // log10(2) = 0x0.4d104d427de7fbcc... + const int64_t significand = 0x4d104d427de7fbcc; + int index = static_cast<int>( + ((min_exponent + fp::num_significand_bits - 1) * (significand >> shift) + + ((int64_t(1) << shift) - 1)) // ceil + >> 32 // arithmetic shift + ); + // Decimal exponent of the first (smallest) cached power of 10. + const int first_dec_exp = -348; + // Difference between 2 consecutive decimal exponents in cached powers of 10. + const int dec_exp_step = 8; + index = (index - first_dec_exp - 1) / dec_exp_step + 1; + pow10_exponent = first_dec_exp + index * dec_exp_step; + return {data::pow10_significands[index], data::pow10_exponents[index]}; +} + +#ifndef _MSC_VER +# define FMT_SNPRINTF snprintf +#else +FMT_API auto fmt_snprintf(char* buf, size_t size, const char* fmt, ...) -> int; +# define FMT_SNPRINTF fmt_snprintf +#endif // _MSC_VER + +// Formats a floating-point number with snprintf using the hexfloat format. +template <typename T> +auto snprintf_float(T value, int precision, float_specs specs, + buffer<char>& buf) -> int { + // Buffer capacity must be non-zero, otherwise MSVC's vsnprintf_s will fail. + FMT_ASSERT(buf.capacity() > buf.size(), "empty buffer"); + FMT_ASSERT(specs.format == float_format::hex, ""); + static_assert(!std::is_same<T, float>::value, ""); + + // Build the format string. + char format[7]; // The longest format is "%#.*Le". + char* format_ptr = format; + *format_ptr++ = '%'; + if (specs.showpoint) *format_ptr++ = '#'; + if (precision >= 0) { + *format_ptr++ = '.'; + *format_ptr++ = '*'; + } + if (std::is_same<T, long double>()) *format_ptr++ = 'L'; + *format_ptr++ = specs.upper ? 'A' : 'a'; + *format_ptr = '\0'; + + // Format using snprintf. + auto offset = buf.size(); + for (;;) { + auto begin = buf.data() + offset; + auto capacity = buf.capacity() - offset; + abort_fuzzing_if(precision > 100000); + // Suppress the warning about a nonliteral format string. + // Cannot use auto because of a bug in MinGW (#1532). + int (*snprintf_ptr)(char*, size_t, const char*, ...) = FMT_SNPRINTF; + int result = precision >= 0 + ? snprintf_ptr(begin, capacity, format, precision, value) + : snprintf_ptr(begin, capacity, format, value); + if (result < 0) { + // The buffer will grow exponentially. + buf.try_reserve(buf.capacity() + 1); + continue; + } + auto size = to_unsigned(result); + // Size equal to capacity means that the last character was truncated. + if (size < capacity) { + buf.try_resize(size + offset); + return 0; + } + buf.try_reserve(size + offset + 1); // Add 1 for the terminating '\0'. + } +} + +template <typename T> +using convert_float_result = + conditional_t<std::is_same<T, float>::value || sizeof(T) == sizeof(double), + double, T>; + +template <typename T> +constexpr auto convert_float(T value) -> convert_float_result<T> { + return static_cast<convert_float_result<T>>(value); +} + +template <typename OutputIt, typename Char> +FMT_NOINLINE FMT_CONSTEXPR auto fill(OutputIt it, size_t n, + const fill_t<Char>& fill) -> OutputIt { + auto fill_size = fill.size(); + if (fill_size == 1) return detail::fill_n(it, n, fill[0]); + auto data = fill.data(); + for (size_t i = 0; i < n; ++i) + it = copy_str<Char>(data, data + fill_size, it); + return it; +} + +// Writes the output of f, padded according to format specifications in specs. +// size: output size in code units. +// width: output display width in (terminal) column positions. +template <align::type align = align::left, typename OutputIt, typename Char, + typename F> +FMT_CONSTEXPR auto write_padded(OutputIt out, + const basic_format_specs<Char>& specs, + size_t size, size_t width, F&& f) -> OutputIt { + static_assert(align == align::left || align == align::right, ""); + unsigned spec_width = to_unsigned(specs.width); + size_t padding = spec_width > width ? spec_width - width : 0; + // Shifts are encoded as string literals because static constexpr is not + // supported in constexpr functions. + auto* shifts = align == align::left ? "\x1f\x1f\x00\x01" : "\x00\x1f\x00\x01"; + size_t left_padding = padding >> shifts[specs.align]; + size_t right_padding = padding - left_padding; + auto it = reserve(out, size + padding * specs.fill.size()); + if (left_padding != 0) it = fill(it, left_padding, specs.fill); + it = f(it); + if (right_padding != 0) it = fill(it, right_padding, specs.fill); + return base_iterator(out, it); +} + +template <align::type align = align::left, typename OutputIt, typename Char, + typename F> +constexpr auto write_padded(OutputIt out, const basic_format_specs<Char>& specs, + size_t size, F&& f) -> OutputIt { + return write_padded<align>(out, specs, size, size, f); +} + +template <align::type align = align::left, typename Char, typename OutputIt> +FMT_CONSTEXPR auto write_bytes(OutputIt out, string_view bytes, + const basic_format_specs<Char>& specs) + -> OutputIt { + return write_padded<align>( + out, specs, bytes.size(), [bytes](reserve_iterator<OutputIt> it) { + const char* data = bytes.data(); + return copy_str<Char>(data, data + bytes.size(), it); + }); +} + +template <typename Char, typename OutputIt, typename UIntPtr> +auto write_ptr(OutputIt out, UIntPtr value, + const basic_format_specs<Char>* specs) -> OutputIt { + int num_digits = count_digits<4>(value); + auto size = to_unsigned(num_digits) + size_t(2); + auto write = [=](reserve_iterator<OutputIt> it) { + *it++ = static_cast<Char>('0'); + *it++ = static_cast<Char>('x'); + return format_uint<4, Char>(it, value, num_digits); + }; + return specs ? write_padded<align::right>(out, *specs, size, write) + : base_iterator(out, write(reserve(out, size))); +} + +// Returns true iff the code point cp is printable. +FMT_API auto is_printable(uint32_t cp) -> bool; + +inline auto needs_escape(uint32_t cp) -> bool { + return cp < 0x20 || cp == 0x7f || cp == '"' || cp == '\\' || + !is_printable(cp); +} + +template <typename Char> struct find_escape_result { + const Char* begin; + const Char* end; + uint32_t cp; +}; + +template <typename Char> +using make_unsigned_char = + typename conditional_t<std::is_integral<Char>::value, + std::make_unsigned<Char>, + type_identity<uint32_t>>::type; + +template <typename Char> +auto find_escape(const Char* begin, const Char* end) + -> find_escape_result<Char> { + for (; begin != end; ++begin) { + uint32_t cp = static_cast<make_unsigned_char<Char>>(*begin); + if (const_check(sizeof(Char) == 1) && cp >= 0x80) continue; + if (needs_escape(cp)) return {begin, begin + 1, cp}; + } + return {begin, nullptr, 0}; +} + +inline auto find_escape(const char* begin, const char* end) + -> find_escape_result<char> { + if (!is_utf8()) return find_escape<char>(begin, end); + auto result = find_escape_result<char>{end, nullptr, 0}; + for_each_codepoint(string_view(begin, to_unsigned(end - begin)), + [&](uint32_t cp, string_view sv) { + if (needs_escape(cp)) { + result = {sv.begin(), sv.end(), cp}; + return false; + } + return true; + }); + return result; +} + +#define FMT_STRING_IMPL(s, base, explicit) \ + [] { \ + /* Use the hidden visibility as a workaround for a GCC bug (#1973). */ \ + /* Use a macro-like name to avoid shadowing warnings. */ \ + struct FMT_GCC_VISIBILITY_HIDDEN FMT_COMPILE_STRING : base { \ + using char_type = fmt::remove_cvref_t<decltype(s[0])>; \ + FMT_MAYBE_UNUSED FMT_CONSTEXPR explicit \ + operator fmt::basic_string_view<char_type>() const { \ + return fmt::detail_exported::compile_string_to_view<char_type>(s); \ + } \ + }; \ + return FMT_COMPILE_STRING(); \ + }() + +/** + \rst + Constructs a compile-time format string from a string literal *s*. + + **Example**:: + + // A compile-time error because 'd' is an invalid specifier for strings. + std::string s = fmt::format(FMT_STRING("{:d}"), "foo"); + \endrst + */ +#define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::detail::compile_string, ) + +template <size_t width, typename Char, typename OutputIt> +auto write_codepoint(OutputIt out, char prefix, uint32_t cp) -> OutputIt { + *out++ = static_cast<Char>('\\'); + *out++ = static_cast<Char>(prefix); + Char buf[width]; + fill_n(buf, width, static_cast<Char>('0')); + format_uint<4>(buf, cp, width); + return copy_str<Char>(buf, buf + width, out); +} + +template <typename OutputIt, typename Char> +auto write_escaped_cp(OutputIt out, const find_escape_result<Char>& escape) + -> OutputIt { + auto c = static_cast<Char>(escape.cp); + switch (escape.cp) { + case '\n': + *out++ = static_cast<Char>('\\'); + c = static_cast<Char>('n'); + break; + case '\r': + *out++ = static_cast<Char>('\\'); + c = static_cast<Char>('r'); + break; + case '\t': + *out++ = static_cast<Char>('\\'); + c = static_cast<Char>('t'); + break; + case '"': + FMT_FALLTHROUGH; + case '\'': + FMT_FALLTHROUGH; + case '\\': + *out++ = static_cast<Char>('\\'); + break; + default: + if (is_utf8()) { + if (escape.cp < 0x100) { + return write_codepoint<2, Char>(out, 'x', escape.cp); + } + if (escape.cp < 0x10000) { + return write_codepoint<4, Char>(out, 'u', escape.cp); + } + if (escape.cp < 0x110000) { + return write_codepoint<8, Char>(out, 'U', escape.cp); + } + } + for (Char escape_char : basic_string_view<Char>( + escape.begin, to_unsigned(escape.end - escape.begin))) { + out = write_codepoint<2, Char>(out, 'x', + static_cast<uint32_t>(escape_char) & 0xFF); + } + return out; + } + *out++ = c; + return out; +} + +template <typename Char, typename OutputIt> +auto write_escaped_string(OutputIt out, basic_string_view<Char> str) + -> OutputIt { + *out++ = static_cast<Char>('"'); + auto begin = str.begin(), end = str.end(); + do { + auto escape = find_escape(begin, end); + out = copy_str<Char>(begin, escape.begin, out); + begin = escape.end; + if (!begin) break; + out = write_escaped_cp<OutputIt, Char>(out, escape); + } while (begin != end); + *out++ = static_cast<Char>('"'); + return out; +} + +template <typename Char, typename OutputIt> +auto write_escaped_char(OutputIt out, Char v) -> OutputIt { + *out++ = static_cast<Char>('\''); + if ((needs_escape(static_cast<uint32_t>(v)) && v != static_cast<Char>('"')) || + v == static_cast<Char>('\'')) { + out = write_escaped_cp( + out, find_escape_result<Char>{&v, &v + 1, static_cast<uint32_t>(v)}); + } else { + *out++ = v; + } + *out++ = static_cast<Char>('\''); + return out; +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR auto write_char(OutputIt out, Char value, + const basic_format_specs<Char>& specs) + -> OutputIt { + bool is_debug = specs.type == presentation_type::debug; + return write_padded(out, specs, 1, [=](reserve_iterator<OutputIt> it) { + if (is_debug) return write_escaped_char(it, value); + *it++ = value; + return it; + }); +} +template <typename Char, typename OutputIt> +FMT_CONSTEXPR auto write(OutputIt out, Char value, + const basic_format_specs<Char>& specs, + locale_ref loc = {}) -> OutputIt { + return check_char_specs(specs) + ? write_char(out, value, specs) + : write(out, static_cast<int>(value), specs, loc); +} + +// Data for write_int that doesn't depend on output iterator type. It is used to +// avoid template code bloat. +template <typename Char> struct write_int_data { + size_t size; + size_t padding; + + FMT_CONSTEXPR write_int_data(int num_digits, unsigned prefix, + const basic_format_specs<Char>& specs) + : size((prefix >> 24) + to_unsigned(num_digits)), padding(0) { + if (specs.align == align::numeric) { + auto width = to_unsigned(specs.width); + if (width > size) { + padding = width - size; + size = width; + } + } else if (specs.precision > num_digits) { + size = (prefix >> 24) + to_unsigned(specs.precision); + padding = to_unsigned(specs.precision - num_digits); + } + } +}; + +// Writes an integer in the format +// <left-padding><prefix><numeric-padding><digits><right-padding> +// where <digits> are written by write_digits(it). +// prefix contains chars in three lower bytes and the size in the fourth byte. +template <typename OutputIt, typename Char, typename W> +FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, int num_digits, + unsigned prefix, + const basic_format_specs<Char>& specs, + W write_digits) -> OutputIt { + // Slightly faster check for specs.width == 0 && specs.precision == -1. + if ((specs.width | (specs.precision + 1)) == 0) { + auto it = reserve(out, to_unsigned(num_digits) + (prefix >> 24)); + if (prefix != 0) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast<Char>(p & 0xff); + } + return base_iterator(out, write_digits(it)); + } + auto data = write_int_data<Char>(num_digits, prefix, specs); + return write_padded<align::right>( + out, specs, data.size, [=](reserve_iterator<OutputIt> it) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast<Char>(p & 0xff); + it = detail::fill_n(it, data.padding, static_cast<Char>('0')); + return write_digits(it); + }); +} + +template <typename Char> class digit_grouping { + private: + thousands_sep_result<Char> sep_; + + struct next_state { + std::string::const_iterator group; + int pos; + }; + next_state initial_state() const { return {sep_.grouping.begin(), 0}; } + + // Returns the next digit group separator position. + int next(next_state& state) const { + if (!sep_.thousands_sep) return max_value<int>(); + if (state.group == sep_.grouping.end()) + return state.pos += sep_.grouping.back(); + if (*state.group <= 0 || *state.group == max_value<char>()) + return max_value<int>(); + state.pos += *state.group++; + return state.pos; + } + + public: + explicit digit_grouping(locale_ref loc, bool localized = true) { + if (localized) + sep_ = thousands_sep<Char>(loc); + else + sep_.thousands_sep = Char(); + } + explicit digit_grouping(thousands_sep_result<Char> sep) : sep_(sep) {} + + Char separator() const { return sep_.thousands_sep; } + + int count_separators(int num_digits) const { + int count = 0; + auto state = initial_state(); + while (num_digits > next(state)) ++count; + return count; + } + + // Applies grouping to digits and write the output to out. + template <typename Out, typename C> + Out apply(Out out, basic_string_view<C> digits) const { + auto num_digits = static_cast<int>(digits.size()); + auto separators = basic_memory_buffer<int>(); + separators.push_back(0); + auto state = initial_state(); + while (int i = next(state)) { + if (i >= num_digits) break; + separators.push_back(i); + } + for (int i = 0, sep_index = static_cast<int>(separators.size() - 1); + i < num_digits; ++i) { + if (num_digits - i == separators[sep_index]) { + *out++ = separator(); + --sep_index; + } + *out++ = static_cast<Char>(digits[to_unsigned(i)]); + } + return out; + } +}; + +template <typename OutputIt, typename UInt, typename Char> +auto write_int_localized(OutputIt out, UInt value, unsigned prefix, + const basic_format_specs<Char>& specs, + const digit_grouping<Char>& grouping) -> OutputIt { + static_assert(std::is_same<uint64_or_128_t<UInt>, UInt>::value, ""); + int num_digits = count_digits(value); + char digits[40]; + format_decimal(digits, value, num_digits); + unsigned size = to_unsigned((prefix != 0 ? 1 : 0) + num_digits + + grouping.count_separators(num_digits)); + return write_padded<align::right>( + out, specs, size, size, [&](reserve_iterator<OutputIt> it) { + if (prefix != 0) *it++ = static_cast<Char>(prefix); + return grouping.apply(it, string_view(digits, to_unsigned(num_digits))); + }); +} + +template <typename OutputIt, typename UInt, typename Char> +auto write_int_localized(OutputIt& out, UInt value, unsigned prefix, + const basic_format_specs<Char>& specs, locale_ref loc) + -> bool { + auto grouping = digit_grouping<Char>(loc); + out = write_int_localized(out, value, prefix, specs, grouping); + return true; +} + +FMT_CONSTEXPR inline void prefix_append(unsigned& prefix, unsigned value) { + prefix |= prefix != 0 ? value << 8 : value; + prefix += (1u + (value > 0xff ? 1 : 0)) << 24; +} + +template <typename UInt> struct write_int_arg { + UInt abs_value; + unsigned prefix; +}; + +template <typename T> +FMT_CONSTEXPR auto make_write_int_arg(T value, sign_t sign) + -> write_int_arg<uint32_or_64_or_128_t<T>> { + auto prefix = 0u; + auto abs_value = static_cast<uint32_or_64_or_128_t<T>>(value); + if (is_negative(value)) { + prefix = 0x01000000 | '-'; + abs_value = 0 - abs_value; + } else { + constexpr const unsigned prefixes[4] = {0, 0, 0x1000000u | '+', + 0x1000000u | ' '}; + prefix = prefixes[sign]; + } + return {abs_value, prefix}; +} + +template <typename Char, typename OutputIt, typename T> +FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, write_int_arg<T> arg, + const basic_format_specs<Char>& specs, + locale_ref loc) -> OutputIt { + static_assert(std::is_same<T, uint32_or_64_or_128_t<T>>::value, ""); + auto abs_value = arg.abs_value; + auto prefix = arg.prefix; + switch (specs.type) { + case presentation_type::none: + case presentation_type::dec: { + if (specs.localized && + write_int_localized(out, static_cast<uint64_or_128_t<T>>(abs_value), + prefix, specs, loc)) { + return out; + } + auto num_digits = count_digits(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) { + return format_decimal<Char>(it, abs_value, num_digits).end; + }); + } + case presentation_type::hex_lower: + case presentation_type::hex_upper: { + bool upper = specs.type == presentation_type::hex_upper; + if (specs.alt) + prefix_append(prefix, unsigned(upper ? 'X' : 'x') << 8 | '0'); + int num_digits = count_digits<4>(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) { + return format_uint<4, Char>(it, abs_value, num_digits, upper); + }); + } + case presentation_type::bin_lower: + case presentation_type::bin_upper: { + bool upper = specs.type == presentation_type::bin_upper; + if (specs.alt) + prefix_append(prefix, unsigned(upper ? 'B' : 'b') << 8 | '0'); + int num_digits = count_digits<1>(abs_value); + return write_int(out, num_digits, prefix, specs, + [=](reserve_iterator<OutputIt> it) { + return format_uint<1, Char>(it, abs_value, num_digits); + }); + } + case presentation_type::oct: { + int num_digits = count_digits<3>(abs_value); + // Octal prefix '0' is counted as a digit, so only add it if precision + // is not greater than the number of digits. + if (specs.alt && specs.precision <= num_digits && abs_value != 0) + prefix_append(prefix, '0'); + return write_int(out, num_digits, prefix, specs, + [=](reserve_iterator<OutputIt> it) { + return format_uint<3, Char>(it, abs_value, num_digits); + }); + } + case presentation_type::chr: + return write_char(out, static_cast<Char>(abs_value), specs); + default: + throw_format_error("invalid type specifier"); + } + return out; +} +template <typename Char, typename OutputIt, typename T> +FMT_CONSTEXPR FMT_NOINLINE auto write_int_noinline( + OutputIt out, write_int_arg<T> arg, const basic_format_specs<Char>& specs, + locale_ref loc) -> OutputIt { + return write_int(out, arg, specs, loc); +} +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_integral<T>::value && + !std::is_same<T, bool>::value && + std::is_same<OutputIt, buffer_appender<Char>>::value)> +FMT_CONSTEXPR FMT_INLINE auto write(OutputIt out, T value, + const basic_format_specs<Char>& specs, + locale_ref loc) -> OutputIt { + return write_int_noinline(out, make_write_int_arg(value, specs.sign), specs, + loc); +} +// An inlined version of write used in format string compilation. +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_integral<T>::value && + !std::is_same<T, bool>::value && + !std::is_same<OutputIt, buffer_appender<Char>>::value)> +FMT_CONSTEXPR FMT_INLINE auto write(OutputIt out, T value, + const basic_format_specs<Char>& specs, + locale_ref loc) -> OutputIt { + return write_int(out, make_write_int_arg(value, specs.sign), specs, loc); +} + +// An output iterator that counts the number of objects written to it and +// discards them. +class counting_iterator { + private: + size_t count_; + + public: + using iterator_category = std::output_iterator_tag; + using difference_type = std::ptrdiff_t; + using pointer = void; + using reference = void; + FMT_UNCHECKED_ITERATOR(counting_iterator); + + struct value_type { + template <typename T> void operator=(const T&) {} + }; + + counting_iterator() : count_(0) {} + + size_t count() const { return count_; } + + counting_iterator& operator++() { + ++count_; + return *this; + } + counting_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + friend counting_iterator operator+(counting_iterator it, difference_type n) { + it.count_ += static_cast<size_t>(n); + return it; + } + + value_type operator*() const { return {}; } +}; + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR auto write(OutputIt out, basic_string_view<Char> s, + const basic_format_specs<Char>& specs) -> OutputIt { + auto data = s.data(); + auto size = s.size(); + if (specs.precision >= 0 && to_unsigned(specs.precision) < size) + size = code_point_index(s, to_unsigned(specs.precision)); + bool is_debug = specs.type == presentation_type::debug; + size_t width = 0; + if (specs.width != 0) { + if (is_debug) + width = write_escaped_string(counting_iterator{}, s).count(); + else + width = compute_width(basic_string_view<Char>(data, size)); + } + return write_padded(out, specs, size, width, + [=](reserve_iterator<OutputIt> it) { + if (is_debug) return write_escaped_string(it, s); + return copy_str<Char>(data, data + size, it); + }); +} +template <typename Char, typename OutputIt> +FMT_CONSTEXPR auto write(OutputIt out, + basic_string_view<type_identity_t<Char>> s, + const basic_format_specs<Char>& specs, locale_ref) + -> OutputIt { + check_string_type_spec(specs.type); + return write(out, s, specs); +} +template <typename Char, typename OutputIt> +FMT_CONSTEXPR auto write(OutputIt out, const Char* s, + const basic_format_specs<Char>& specs, locale_ref) + -> OutputIt { + return check_cstring_type_spec(specs.type) + ? write(out, basic_string_view<Char>(s), specs, {}) + : write_ptr<Char>(out, bit_cast<uintptr_t>(s), &specs); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_integral<T>::value && + !std::is_same<T, bool>::value && + !std::is_same<T, Char>::value)> +FMT_CONSTEXPR auto write(OutputIt out, T value) -> OutputIt { + auto abs_value = static_cast<uint32_or_64_or_128_t<T>>(value); + bool negative = is_negative(value); + // Don't do -abs_value since it trips unsigned-integer-overflow sanitizer. + if (negative) abs_value = ~abs_value + 1; + int num_digits = count_digits(abs_value); + auto size = (negative ? 1 : 0) + static_cast<size_t>(num_digits); + auto it = reserve(out, size); + if (auto ptr = to_pointer<Char>(it, size)) { + if (negative) *ptr++ = static_cast<Char>('-'); + format_decimal<Char>(ptr, abs_value, num_digits); + return out; + } + if (negative) *it++ = static_cast<Char>('-'); + it = format_decimal<Char>(it, abs_value, num_digits).end; + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR20 auto write_nonfinite(OutputIt out, bool isnan, + basic_format_specs<Char> specs, + const float_specs& fspecs) -> OutputIt { + auto str = + isnan ? (fspecs.upper ? "NAN" : "nan") : (fspecs.upper ? "INF" : "inf"); + constexpr size_t str_size = 3; + auto sign = fspecs.sign; + auto size = str_size + (sign ? 1 : 0); + // Replace '0'-padding with space for non-finite values. + const bool is_zero_fill = + specs.fill.size() == 1 && *specs.fill.data() == static_cast<Char>('0'); + if (is_zero_fill) specs.fill[0] = static_cast<Char>(' '); + return write_padded(out, specs, size, [=](reserve_iterator<OutputIt> it) { + if (sign) *it++ = detail::sign<Char>(sign); + return copy_str<Char>(str, str + str_size, it); + }); +} + +// A decimal floating-point number significand * pow(10, exp). +struct big_decimal_fp { + const char* significand; + int significand_size; + int exponent; +}; + +constexpr auto get_significand_size(const big_decimal_fp& f) -> int { + return f.significand_size; +} +template <typename T> +inline auto get_significand_size(const dragonbox::decimal_fp<T>& f) -> int { + return count_digits(f.significand); +} + +template <typename Char, typename OutputIt> +constexpr auto write_significand(OutputIt out, const char* significand, + int significand_size) -> OutputIt { + return copy_str<Char>(significand, significand + significand_size, out); +} +template <typename Char, typename OutputIt, typename UInt> +inline auto write_significand(OutputIt out, UInt significand, + int significand_size) -> OutputIt { + return format_decimal<Char>(out, significand, significand_size).end; +} +template <typename Char, typename OutputIt, typename T, typename Grouping> +FMT_CONSTEXPR20 auto write_significand(OutputIt out, T significand, + int significand_size, int exponent, + const Grouping& grouping) -> OutputIt { + if (!grouping.separator()) { + out = write_significand<Char>(out, significand, significand_size); + return detail::fill_n(out, exponent, static_cast<Char>('0')); + } + auto buffer = memory_buffer(); + write_significand<char>(appender(buffer), significand, significand_size); + detail::fill_n(appender(buffer), exponent, '0'); + return grouping.apply(out, string_view(buffer.data(), buffer.size())); +} + +template <typename Char, typename UInt, + FMT_ENABLE_IF(std::is_integral<UInt>::value)> +inline auto write_significand(Char* out, UInt significand, int significand_size, + int integral_size, Char decimal_point) -> Char* { + if (!decimal_point) + return format_decimal(out, significand, significand_size).end; + out += significand_size + 1; + Char* end = out; + int floating_size = significand_size - integral_size; + for (int i = floating_size / 2; i > 0; --i) { + out -= 2; + copy2(out, digits2(static_cast<std::size_t>(significand % 100))); + significand /= 100; + } + if (floating_size % 2 != 0) { + *--out = static_cast<Char>('0' + significand % 10); + significand /= 10; + } + *--out = decimal_point; + format_decimal(out - integral_size, significand, integral_size); + return end; +} + +template <typename OutputIt, typename UInt, typename Char, + FMT_ENABLE_IF(!std::is_pointer<remove_cvref_t<OutputIt>>::value)> +inline auto write_significand(OutputIt out, UInt significand, + int significand_size, int integral_size, + Char decimal_point) -> OutputIt { + // Buffer is large enough to hold digits (digits10 + 1) and a decimal point. + Char buffer[digits10<UInt>() + 2]; + auto end = write_significand(buffer, significand, significand_size, + integral_size, decimal_point); + return detail::copy_str_noinline<Char>(buffer, end, out); +} + +template <typename OutputIt, typename Char> +FMT_CONSTEXPR auto write_significand(OutputIt out, const char* significand, + int significand_size, int integral_size, + Char decimal_point) -> OutputIt { + out = detail::copy_str_noinline<Char>(significand, + significand + integral_size, out); + if (!decimal_point) return out; + *out++ = decimal_point; + return detail::copy_str_noinline<Char>(significand + integral_size, + significand + significand_size, out); +} + +template <typename OutputIt, typename Char, typename T, typename Grouping> +FMT_CONSTEXPR20 auto write_significand(OutputIt out, T significand, + int significand_size, int integral_size, + Char decimal_point, + const Grouping& grouping) -> OutputIt { + if (!grouping.separator()) { + return write_significand(out, significand, significand_size, integral_size, + decimal_point); + } + auto buffer = basic_memory_buffer<Char>(); + write_significand(buffer_appender<Char>(buffer), significand, + significand_size, integral_size, decimal_point); + grouping.apply( + out, basic_string_view<Char>(buffer.data(), to_unsigned(integral_size))); + return detail::copy_str_noinline<Char>(buffer.data() + integral_size, + buffer.end(), out); +} + +template <typename OutputIt, typename DecimalFP, typename Char, + typename Grouping = digit_grouping<Char>> +FMT_CONSTEXPR20 auto do_write_float(OutputIt out, const DecimalFP& f, + const basic_format_specs<Char>& specs, + float_specs fspecs, locale_ref loc) + -> OutputIt { + auto significand = f.significand; + int significand_size = get_significand_size(f); + const Char zero = static_cast<Char>('0'); + auto sign = fspecs.sign; + size_t size = to_unsigned(significand_size) + (sign ? 1 : 0); + using iterator = reserve_iterator<OutputIt>; + + Char decimal_point = + fspecs.locale ? detail::decimal_point<Char>(loc) : static_cast<Char>('.'); + + int output_exp = f.exponent + significand_size - 1; + auto use_exp_format = [=]() { + if (fspecs.format == float_format::exp) return true; + if (fspecs.format != float_format::general) return false; + // Use the fixed notation if the exponent is in [exp_lower, exp_upper), + // e.g. 0.0001 instead of 1e-04. Otherwise use the exponent notation. + const int exp_lower = -4, exp_upper = 16; + return output_exp < exp_lower || + output_exp >= (fspecs.precision > 0 ? fspecs.precision : exp_upper); + }; + if (use_exp_format()) { + int num_zeros = 0; + if (fspecs.showpoint) { + num_zeros = fspecs.precision - significand_size; + if (num_zeros < 0) num_zeros = 0; + size += to_unsigned(num_zeros); + } else if (significand_size == 1) { + decimal_point = Char(); + } + auto abs_output_exp = output_exp >= 0 ? output_exp : -output_exp; + int exp_digits = 2; + if (abs_output_exp >= 100) exp_digits = abs_output_exp >= 1000 ? 4 : 3; + + size += to_unsigned((decimal_point ? 1 : 0) + 2 + exp_digits); + char exp_char = fspecs.upper ? 'E' : 'e'; + auto write = [=](iterator it) { + if (sign) *it++ = detail::sign<Char>(sign); + // Insert a decimal point after the first digit and add an exponent. + it = write_significand(it, significand, significand_size, 1, + decimal_point); + if (num_zeros > 0) it = detail::fill_n(it, num_zeros, zero); + *it++ = static_cast<Char>(exp_char); + return write_exponent<Char>(output_exp, it); + }; + return specs.width > 0 ? write_padded<align::right>(out, specs, size, write) + : base_iterator(out, write(reserve(out, size))); + } + + int exp = f.exponent + significand_size; + if (f.exponent >= 0) { + // 1234e5 -> 123400000[.0+] + size += to_unsigned(f.exponent); + int num_zeros = fspecs.precision - exp; + abort_fuzzing_if(num_zeros > 5000); + if (fspecs.showpoint) { + ++size; + if (num_zeros <= 0 && fspecs.format != float_format::fixed) num_zeros = 1; + if (num_zeros > 0) size += to_unsigned(num_zeros); + } + auto grouping = Grouping(loc, fspecs.locale); + size += to_unsigned(grouping.count_separators(exp)); + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = detail::sign<Char>(sign); + it = write_significand<Char>(it, significand, significand_size, + f.exponent, grouping); + if (!fspecs.showpoint) return it; + *it++ = decimal_point; + return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it; + }); + } else if (exp > 0) { + // 1234e-2 -> 12.34[0+] + int num_zeros = fspecs.showpoint ? fspecs.precision - significand_size : 0; + size += 1 + to_unsigned(num_zeros > 0 ? num_zeros : 0); + auto grouping = Grouping(loc, fspecs.locale); + size += to_unsigned(grouping.count_separators(significand_size)); + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = detail::sign<Char>(sign); + it = write_significand(it, significand, significand_size, exp, + decimal_point, grouping); + return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it; + }); + } + // 1234e-6 -> 0.001234 + int num_zeros = -exp; + if (significand_size == 0 && fspecs.precision >= 0 && + fspecs.precision < num_zeros) { + num_zeros = fspecs.precision; + } + bool pointy = num_zeros != 0 || significand_size != 0 || fspecs.showpoint; + size += 1 + (pointy ? 1 : 0) + to_unsigned(num_zeros); + return write_padded<align::right>(out, specs, size, [&](iterator it) { + if (sign) *it++ = detail::sign<Char>(sign); + *it++ = zero; + if (!pointy) return it; + *it++ = decimal_point; + it = detail::fill_n(it, num_zeros, zero); + return write_significand<Char>(it, significand, significand_size); + }); +} + +template <typename Char> class fallback_digit_grouping { + public: + constexpr fallback_digit_grouping(locale_ref, bool) {} + + constexpr Char separator() const { return Char(); } + + constexpr int count_separators(int) const { return 0; } + + template <typename Out, typename C> + constexpr Out apply(Out out, basic_string_view<C>) const { + return out; + } +}; + +template <typename OutputIt, typename DecimalFP, typename Char> +FMT_CONSTEXPR20 auto write_float(OutputIt out, const DecimalFP& f, + const basic_format_specs<Char>& specs, + float_specs fspecs, locale_ref loc) + -> OutputIt { + if (is_constant_evaluated()) { + return do_write_float<OutputIt, DecimalFP, Char, + fallback_digit_grouping<Char>>(out, f, specs, fspecs, + loc); + } else { + return do_write_float(out, f, specs, fspecs, loc); + } +} + +template <typename T> constexpr bool isnan(T value) { + return !(value >= value); // std::isnan doesn't support __float128. +} + +template <typename T, typename Enable = void> +struct has_isfinite : std::false_type {}; + +template <typename T> +struct has_isfinite<T, enable_if_t<sizeof(std::isfinite(T())) != 0>> + : std::true_type {}; + +template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value&& + has_isfinite<T>::value)> +FMT_CONSTEXPR20 bool isfinite(T value) { + constexpr T inf = T(std::numeric_limits<double>::infinity()); + if (is_constant_evaluated()) + return !detail::isnan(value) && value != inf && value != -inf; + return std::isfinite(value); +} +template <typename T, FMT_ENABLE_IF(!has_isfinite<T>::value)> +FMT_CONSTEXPR bool isfinite(T value) { + T inf = T(std::numeric_limits<double>::infinity()); + // std::isfinite doesn't support __float128. + return !detail::isnan(value) && value != inf && value != -inf; +} + +template <typename T, FMT_ENABLE_IF(is_floating_point<T>::value)> +FMT_INLINE FMT_CONSTEXPR bool signbit(T value) { + if (is_constant_evaluated()) { +#ifdef __cpp_if_constexpr + if constexpr (std::numeric_limits<double>::is_iec559) { + auto bits = detail::bit_cast<uint64_t>(static_cast<double>(value)); + return (bits >> (num_bits<uint64_t>() - 1)) != 0; + } +#endif + } + return std::signbit(static_cast<double>(value)); +} + +enum class round_direction { unknown, up, down }; + +// Given the divisor (normally a power of 10), the remainder = v % divisor for +// some number v and the error, returns whether v should be rounded up, down, or +// whether the rounding direction can't be determined due to error. +// error should be less than divisor / 2. +FMT_CONSTEXPR inline round_direction get_round_direction(uint64_t divisor, + uint64_t remainder, + uint64_t error) { + FMT_ASSERT(remainder < divisor, ""); // divisor - remainder won't overflow. + FMT_ASSERT(error < divisor, ""); // divisor - error won't overflow. + FMT_ASSERT(error < divisor - error, ""); // error * 2 won't overflow. + // Round down if (remainder + error) * 2 <= divisor. + if (remainder <= divisor - remainder && error * 2 <= divisor - remainder * 2) + return round_direction::down; + // Round up if (remainder - error) * 2 >= divisor. + if (remainder >= error && + remainder - error >= divisor - (remainder - error)) { + return round_direction::up; + } + return round_direction::unknown; +} + +namespace digits { +enum result { + more, // Generate more digits. + done, // Done generating digits. + error // Digit generation cancelled due to an error. +}; +} + +struct gen_digits_handler { + char* buf; + int size; + int precision; + int exp10; + bool fixed; + + FMT_CONSTEXPR digits::result on_digit(char digit, uint64_t divisor, + uint64_t remainder, uint64_t error, + bool integral) { + FMT_ASSERT(remainder < divisor, ""); + buf[size++] = digit; + if (!integral && error >= remainder) return digits::error; + if (size < precision) return digits::more; + if (!integral) { + // Check if error * 2 < divisor with overflow prevention. + // The check is not needed for the integral part because error = 1 + // and divisor > (1 << 32) there. + if (error >= divisor || error >= divisor - error) return digits::error; + } else { + FMT_ASSERT(error == 1 && divisor > 2, ""); + } + auto dir = get_round_direction(divisor, remainder, error); + if (dir != round_direction::up) + return dir == round_direction::down ? digits::done : digits::error; + ++buf[size - 1]; + for (int i = size - 1; i > 0 && buf[i] > '9'; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] > '9') { + buf[0] = '1'; + if (fixed) + buf[size++] = '0'; + else + ++exp10; + } + return digits::done; + } +}; + +inline FMT_CONSTEXPR20 void adjust_precision(int& precision, int exp10) { + // Adjust fixed precision by exponent because it is relative to decimal + // point. + if (exp10 > 0 && precision > max_value<int>() - exp10) + FMT_THROW(format_error("number is too big")); + precision += exp10; +} + +// Generates output using the Grisu digit-gen algorithm. +// error: the size of the region (lower, upper) outside of which numbers +// definitely do not round to value (Delta in Grisu3). +FMT_INLINE FMT_CONSTEXPR20 auto grisu_gen_digits(fp value, uint64_t error, + int& exp, + gen_digits_handler& handler) + -> digits::result { + const fp one(1ULL << -value.e, value.e); + // The integral part of scaled value (p1 in Grisu) = value / one. It cannot be + // zero because it contains a product of two 64-bit numbers with MSB set (due + // to normalization) - 1, shifted right by at most 60 bits. + auto integral = static_cast<uint32_t>(value.f >> -one.e); + FMT_ASSERT(integral != 0, ""); + FMT_ASSERT(integral == value.f >> -one.e, ""); + // The fractional part of scaled value (p2 in Grisu) c = value % one. + uint64_t fractional = value.f & (one.f - 1); + exp = count_digits(integral); // kappa in Grisu. + // Non-fixed formats require at least one digit and no precision adjustment. + if (handler.fixed) { + adjust_precision(handler.precision, exp + handler.exp10); + // Check if precision is satisfied just by leading zeros, e.g. + // format("{:.2f}", 0.001) gives "0.00" without generating any digits. + if (handler.precision <= 0) { + if (handler.precision < 0) return digits::done; + // Divide by 10 to prevent overflow. + uint64_t divisor = data::power_of_10_64[exp - 1] << -one.e; + auto dir = get_round_direction(divisor, value.f / 10, error * 10); + if (dir == round_direction::unknown) return digits::error; + handler.buf[handler.size++] = dir == round_direction::up ? '1' : '0'; + return digits::done; + } + } + // Generate digits for the integral part. This can produce up to 10 digits. + do { + uint32_t digit = 0; + auto divmod_integral = [&](uint32_t divisor) { + digit = integral / divisor; + integral %= divisor; + }; + // This optimization by Milo Yip reduces the number of integer divisions by + // one per iteration. + switch (exp) { + case 10: + divmod_integral(1000000000); + break; + case 9: + divmod_integral(100000000); + break; + case 8: + divmod_integral(10000000); + break; + case 7: + divmod_integral(1000000); + break; + case 6: + divmod_integral(100000); + break; + case 5: + divmod_integral(10000); + break; + case 4: + divmod_integral(1000); + break; + case 3: + divmod_integral(100); + break; + case 2: + divmod_integral(10); + break; + case 1: + digit = integral; + integral = 0; + break; + default: + FMT_ASSERT(false, "invalid number of digits"); + } + --exp; + auto remainder = (static_cast<uint64_t>(integral) << -one.e) + fractional; + auto result = handler.on_digit(static_cast<char>('0' + digit), + data::power_of_10_64[exp] << -one.e, + remainder, error, true); + if (result != digits::more) return result; + } while (exp > 0); + // Generate digits for the fractional part. + for (;;) { + fractional *= 10; + error *= 10; + char digit = static_cast<char>('0' + (fractional >> -one.e)); + fractional &= one.f - 1; + --exp; + auto result = handler.on_digit(digit, one.f, fractional, error, false); + if (result != digits::more) return result; + } +} + +class bigint { + private: + // A bigint is stored as an array of bigits (big digits), with bigit at index + // 0 being the least significant one. + using bigit = uint32_t; + using double_bigit = uint64_t; + enum { bigits_capacity = 32 }; + basic_memory_buffer<bigit, bigits_capacity> bigits_; + int exp_; + + FMT_CONSTEXPR20 bigit operator[](int index) const { + return bigits_[to_unsigned(index)]; + } + FMT_CONSTEXPR20 bigit& operator[](int index) { + return bigits_[to_unsigned(index)]; + } + + static constexpr const int bigit_bits = num_bits<bigit>(); + + friend struct formatter<bigint>; + + FMT_CONSTEXPR20 void subtract_bigits(int index, bigit other, bigit& borrow) { + auto result = static_cast<double_bigit>((*this)[index]) - other - borrow; + (*this)[index] = static_cast<bigit>(result); + borrow = static_cast<bigit>(result >> (bigit_bits * 2 - 1)); + } + + FMT_CONSTEXPR20 void remove_leading_zeros() { + int num_bigits = static_cast<int>(bigits_.size()) - 1; + while (num_bigits > 0 && (*this)[num_bigits] == 0) --num_bigits; + bigits_.resize(to_unsigned(num_bigits + 1)); + } + + // Computes *this -= other assuming aligned bigints and *this >= other. + FMT_CONSTEXPR20 void subtract_aligned(const bigint& other) { + FMT_ASSERT(other.exp_ >= exp_, "unaligned bigints"); + FMT_ASSERT(compare(*this, other) >= 0, ""); + bigit borrow = 0; + int i = other.exp_ - exp_; + for (size_t j = 0, n = other.bigits_.size(); j != n; ++i, ++j) + subtract_bigits(i, other.bigits_[j], borrow); + while (borrow > 0) subtract_bigits(i, 0, borrow); + remove_leading_zeros(); + } + + FMT_CONSTEXPR20 void multiply(uint32_t value) { + const double_bigit wide_value = value; + bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + double_bigit result = bigits_[i] * wide_value + carry; + bigits_[i] = static_cast<bigit>(result); + carry = static_cast<bigit>(result >> bigit_bits); + } + if (carry != 0) bigits_.push_back(carry); + } + + template <typename UInt, FMT_ENABLE_IF(std::is_same<UInt, uint64_t>::value || + std::is_same<UInt, uint128_t>::value)> + FMT_CONSTEXPR20 void multiply(UInt value) { + using half_uint = + conditional_t<std::is_same<UInt, uint128_t>::value, uint64_t, uint32_t>; + const int shift = num_bits<half_uint>() - bigit_bits; + const UInt lower = static_cast<half_uint>(value); + const UInt upper = value >> num_bits<half_uint>(); + UInt carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + UInt result = lower * bigits_[i] + static_cast<bigit>(carry); + carry = (upper * bigits_[i] << shift) + (result >> bigit_bits) + + (carry >> bigit_bits); + bigits_[i] = static_cast<bigit>(result); + } + while (carry != 0) { + bigits_.push_back(static_cast<bigit>(carry)); + carry >>= bigit_bits; + } + } + + template <typename UInt, FMT_ENABLE_IF(std::is_same<UInt, uint64_t>::value || + std::is_same<UInt, uint128_t>::value)> + FMT_CONSTEXPR20 void assign(UInt n) { + size_t num_bigits = 0; + do { + bigits_[num_bigits++] = static_cast<bigit>(n); + n >>= bigit_bits; + } while (n != 0); + bigits_.resize(num_bigits); + exp_ = 0; + } + + public: + FMT_CONSTEXPR20 bigint() : exp_(0) {} + explicit bigint(uint64_t n) { assign(n); } + + bigint(const bigint&) = delete; + void operator=(const bigint&) = delete; + + FMT_CONSTEXPR20 void assign(const bigint& other) { + auto size = other.bigits_.size(); + bigits_.resize(size); + auto data = other.bigits_.data(); + std::copy(data, data + size, make_checked(bigits_.data(), size)); + exp_ = other.exp_; + } + + template <typename Int> FMT_CONSTEXPR20 void operator=(Int n) { + FMT_ASSERT(n > 0, ""); + assign(uint64_or_128_t<Int>(n)); + } + + FMT_CONSTEXPR20 int num_bigits() const { + return static_cast<int>(bigits_.size()) + exp_; + } + + FMT_NOINLINE FMT_CONSTEXPR20 bigint& operator<<=(int shift) { + FMT_ASSERT(shift >= 0, ""); + exp_ += shift / bigit_bits; + shift %= bigit_bits; + if (shift == 0) return *this; + bigit carry = 0; + for (size_t i = 0, n = bigits_.size(); i < n; ++i) { + bigit c = bigits_[i] >> (bigit_bits - shift); + bigits_[i] = (bigits_[i] << shift) + carry; + carry = c; + } + if (carry != 0) bigits_.push_back(carry); + return *this; + } + + template <typename Int> FMT_CONSTEXPR20 bigint& operator*=(Int value) { + FMT_ASSERT(value > 0, ""); + multiply(uint32_or_64_or_128_t<Int>(value)); + return *this; + } + + friend FMT_CONSTEXPR20 int compare(const bigint& lhs, const bigint& rhs) { + int num_lhs_bigits = lhs.num_bigits(), num_rhs_bigits = rhs.num_bigits(); + if (num_lhs_bigits != num_rhs_bigits) + return num_lhs_bigits > num_rhs_bigits ? 1 : -1; + int i = static_cast<int>(lhs.bigits_.size()) - 1; + int j = static_cast<int>(rhs.bigits_.size()) - 1; + int end = i - j; + if (end < 0) end = 0; + for (; i >= end; --i, --j) { + bigit lhs_bigit = lhs[i], rhs_bigit = rhs[j]; + if (lhs_bigit != rhs_bigit) return lhs_bigit > rhs_bigit ? 1 : -1; + } + if (i != j) return i > j ? 1 : -1; + return 0; + } + + // Returns compare(lhs1 + lhs2, rhs). + friend FMT_CONSTEXPR20 int add_compare(const bigint& lhs1, const bigint& lhs2, + const bigint& rhs) { + auto minimum = [](int a, int b) { return a < b ? a : b; }; + auto maximum = [](int a, int b) { return a > b ? a : b; }; + int max_lhs_bigits = maximum(lhs1.num_bigits(), lhs2.num_bigits()); + int num_rhs_bigits = rhs.num_bigits(); + if (max_lhs_bigits + 1 < num_rhs_bigits) return -1; + if (max_lhs_bigits > num_rhs_bigits) return 1; + auto get_bigit = [](const bigint& n, int i) -> bigit { + return i >= n.exp_ && i < n.num_bigits() ? n[i - n.exp_] : 0; + }; + double_bigit borrow = 0; + int min_exp = minimum(minimum(lhs1.exp_, lhs2.exp_), rhs.exp_); + for (int i = num_rhs_bigits - 1; i >= min_exp; --i) { + double_bigit sum = + static_cast<double_bigit>(get_bigit(lhs1, i)) + get_bigit(lhs2, i); + bigit rhs_bigit = get_bigit(rhs, i); + if (sum > rhs_bigit + borrow) return 1; + borrow = rhs_bigit + borrow - sum; + if (borrow > 1) return -1; + borrow <<= bigit_bits; + } + return borrow != 0 ? -1 : 0; + } + + // Assigns pow(10, exp) to this bigint. + FMT_CONSTEXPR20 void assign_pow10(int exp) { + FMT_ASSERT(exp >= 0, ""); + if (exp == 0) return *this = 1; + // Find the top bit. + int bitmask = 1; + while (exp >= bitmask) bitmask <<= 1; + bitmask >>= 1; + // pow(10, exp) = pow(5, exp) * pow(2, exp). First compute pow(5, exp) by + // repeated squaring and multiplication. + *this = 5; + bitmask >>= 1; + while (bitmask != 0) { + square(); + if ((exp & bitmask) != 0) *this *= 5; + bitmask >>= 1; + } + *this <<= exp; // Multiply by pow(2, exp) by shifting. + } + + FMT_CONSTEXPR20 void square() { + int num_bigits = static_cast<int>(bigits_.size()); + int num_result_bigits = 2 * num_bigits; + basic_memory_buffer<bigit, bigits_capacity> n(std::move(bigits_)); + bigits_.resize(to_unsigned(num_result_bigits)); + auto sum = uint128_t(); + for (int bigit_index = 0; bigit_index < num_bigits; ++bigit_index) { + // Compute bigit at position bigit_index of the result by adding + // cross-product terms n[i] * n[j] such that i + j == bigit_index. + for (int i = 0, j = bigit_index; j >= 0; ++i, --j) { + // Most terms are multiplied twice which can be optimized in the future. + sum += static_cast<double_bigit>(n[i]) * n[j]; + } + (*this)[bigit_index] = static_cast<bigit>(sum); + sum >>= num_bits<bigit>(); // Compute the carry. + } + // Do the same for the top half. + for (int bigit_index = num_bigits; bigit_index < num_result_bigits; + ++bigit_index) { + for (int j = num_bigits - 1, i = bigit_index - j; i < num_bigits;) + sum += static_cast<double_bigit>(n[i++]) * n[j--]; + (*this)[bigit_index] = static_cast<bigit>(sum); + sum >>= num_bits<bigit>(); + } + remove_leading_zeros(); + exp_ *= 2; + } + + // If this bigint has a bigger exponent than other, adds trailing zero to make + // exponents equal. This simplifies some operations such as subtraction. + FMT_CONSTEXPR20 void align(const bigint& other) { + int exp_difference = exp_ - other.exp_; + if (exp_difference <= 0) return; + int num_bigits = static_cast<int>(bigits_.size()); + bigits_.resize(to_unsigned(num_bigits + exp_difference)); + for (int i = num_bigits - 1, j = i + exp_difference; i >= 0; --i, --j) + bigits_[j] = bigits_[i]; + std::uninitialized_fill_n(bigits_.data(), exp_difference, 0); + exp_ -= exp_difference; + } + + // Divides this bignum by divisor, assigning the remainder to this and + // returning the quotient. + FMT_CONSTEXPR20 int divmod_assign(const bigint& divisor) { + FMT_ASSERT(this != &divisor, ""); + if (compare(*this, divisor) < 0) return 0; + FMT_ASSERT(divisor.bigits_[divisor.bigits_.size() - 1u] != 0, ""); + align(divisor); + int quotient = 0; + do { + subtract_aligned(divisor); + ++quotient; + } while (compare(*this, divisor) >= 0); + return quotient; + } +}; + +// format_dragon flags. +enum dragon { + predecessor_closer = 1, + fixup = 2, // Run fixup to correct exp10 which can be off by one. + fixed = 4, +}; + +// Formats a floating-point number using a variation of the Fixed-Precision +// Positive Floating-Point Printout ((FPP)^2) algorithm by Steele & White: +// https://fmt.dev/papers/p372-steele.pdf. +FMT_CONSTEXPR20 inline void format_dragon(basic_fp<uint128_t> value, + unsigned flags, int num_digits, + buffer<char>& buf, int& exp10) { + bigint numerator; // 2 * R in (FPP)^2. + bigint denominator; // 2 * S in (FPP)^2. + // lower and upper are differences between value and corresponding boundaries. + bigint lower; // (M^- in (FPP)^2). + bigint upper_store; // upper's value if different from lower. + bigint* upper = nullptr; // (M^+ in (FPP)^2). + // Shift numerator and denominator by an extra bit or two (if lower boundary + // is closer) to make lower and upper integers. This eliminates multiplication + // by 2 during later computations. + bool is_predecessor_closer = (flags & dragon::predecessor_closer) != 0; + int shift = is_predecessor_closer ? 2 : 1; + if (value.e >= 0) { + numerator = value.f; + numerator <<= value.e + shift; + lower = 1; + lower <<= value.e; + if (is_predecessor_closer) { + upper_store = 1; + upper_store <<= value.e + 1; + upper = &upper_store; + } + denominator.assign_pow10(exp10); + denominator <<= shift; + } else if (exp10 < 0) { + numerator.assign_pow10(-exp10); + lower.assign(numerator); + if (is_predecessor_closer) { + upper_store.assign(numerator); + upper_store <<= 1; + upper = &upper_store; + } + numerator *= value.f; + numerator <<= shift; + denominator = 1; + denominator <<= shift - value.e; + } else { + numerator = value.f; + numerator <<= shift; + denominator.assign_pow10(exp10); + denominator <<= shift - value.e; + lower = 1; + if (is_predecessor_closer) { + upper_store = 1ULL << 1; + upper = &upper_store; + } + } + bool even = (value.f & 1) == 0; + if (!upper) upper = &lower; + if ((flags & dragon::fixup) != 0) { + if (add_compare(numerator, *upper, denominator) + even <= 0) { + --exp10; + numerator *= 10; + if (num_digits < 0) { + lower *= 10; + if (upper != &lower) *upper *= 10; + } + } + if ((flags & dragon::fixed) != 0) adjust_precision(num_digits, exp10 + 1); + } + // Invariant: value == (numerator / denominator) * pow(10, exp10). + if (num_digits < 0) { + // Generate the shortest representation. + num_digits = 0; + char* data = buf.data(); + for (;;) { + int digit = numerator.divmod_assign(denominator); + bool low = compare(numerator, lower) - even < 0; // numerator <[=] lower. + // numerator + upper >[=] pow10: + bool high = add_compare(numerator, *upper, denominator) + even > 0; + data[num_digits++] = static_cast<char>('0' + digit); + if (low || high) { + if (!low) { + ++data[num_digits - 1]; + } else if (high) { + int result = add_compare(numerator, numerator, denominator); + // Round half to even. + if (result > 0 || (result == 0 && (digit % 2) != 0)) + ++data[num_digits - 1]; + } + buf.try_resize(to_unsigned(num_digits)); + exp10 -= num_digits - 1; + return; + } + numerator *= 10; + lower *= 10; + if (upper != &lower) *upper *= 10; + } + } + // Generate the given number of digits. + exp10 -= num_digits - 1; + if (num_digits == 0) { + denominator *= 10; + auto digit = add_compare(numerator, numerator, denominator) > 0 ? '1' : '0'; + buf.push_back(digit); + return; + } + buf.try_resize(to_unsigned(num_digits)); + for (int i = 0; i < num_digits - 1; ++i) { + int digit = numerator.divmod_assign(denominator); + buf[i] = static_cast<char>('0' + digit); + numerator *= 10; + } + int digit = numerator.divmod_assign(denominator); + auto result = add_compare(numerator, numerator, denominator); + if (result > 0 || (result == 0 && (digit % 2) != 0)) { + if (digit == 9) { + const auto overflow = '0' + 10; + buf[num_digits - 1] = overflow; + // Propagate the carry. + for (int i = num_digits - 1; i > 0 && buf[i] == overflow; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] == overflow) { + buf[0] = '1'; + ++exp10; + } + return; + } + ++digit; + } + buf[num_digits - 1] = static_cast<char>('0' + digit); +} + +template <typename Float> +FMT_CONSTEXPR20 auto format_float(Float value, int precision, float_specs specs, + buffer<char>& buf) -> int { + // float is passed as double to reduce the number of instantiations. + static_assert(!std::is_same<Float, float>::value, ""); + FMT_ASSERT(value >= 0, "value is negative"); + auto converted_value = convert_float(value); + + const bool fixed = specs.format == float_format::fixed; + if (value <= 0) { // <= instead of == to silence a warning. + if (precision <= 0 || !fixed) { + buf.push_back('0'); + return 0; + } + buf.try_resize(to_unsigned(precision)); + fill_n(buf.data(), precision, '0'); + return -precision; + } + + int exp = 0; + bool use_dragon = true; + unsigned dragon_flags = 0; + if (!is_fast_float<Float>()) { + const auto inv_log2_10 = 0.3010299956639812; // 1 / log2(10) + using info = dragonbox::float_info<decltype(converted_value)>; + const auto f = basic_fp<typename info::carrier_uint>(converted_value); + // Compute exp, an approximate power of 10, such that + // 10^(exp - 1) <= value < 10^exp or 10^exp <= value < 10^(exp + 1). + // This is based on log10(value) == log2(value) / log2(10) and approximation + // of log2(value) by e + num_fraction_bits idea from double-conversion. + exp = static_cast<int>( + std::ceil((f.e + count_digits<1>(f.f) - 1) * inv_log2_10 - 1e-10)); + dragon_flags = dragon::fixup; + } else if (!is_constant_evaluated() && precision < 0) { + // Use Dragonbox for the shortest format. + if (specs.binary32) { + auto dec = dragonbox::to_decimal(static_cast<float>(value)); + write<char>(buffer_appender<char>(buf), dec.significand); + return dec.exponent; + } + auto dec = dragonbox::to_decimal(static_cast<double>(value)); + write<char>(buffer_appender<char>(buf), dec.significand); + return dec.exponent; + } else { + // Use Grisu + Dragon4 for the given precision: + // https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf. + const int min_exp = -60; // alpha in Grisu. + int cached_exp10 = 0; // K in Grisu. + fp normalized = normalize(fp(converted_value)); + const auto cached_pow = get_cached_power( + min_exp - (normalized.e + fp::num_significand_bits), cached_exp10); + normalized = normalized * cached_pow; + gen_digits_handler handler{buf.data(), 0, precision, -cached_exp10, fixed}; + if (grisu_gen_digits(normalized, 1, exp, handler) != digits::error && + !is_constant_evaluated()) { + exp += handler.exp10; + buf.try_resize(to_unsigned(handler.size)); + use_dragon = false; + } else { + exp += handler.size - cached_exp10 - 1; + precision = handler.precision; + } + } + if (use_dragon) { + auto f = basic_fp<uint128_t>(); + bool is_predecessor_closer = specs.binary32 + ? f.assign(static_cast<float>(value)) + : f.assign(converted_value); + if (is_predecessor_closer) dragon_flags |= dragon::predecessor_closer; + if (fixed) dragon_flags |= dragon::fixed; + // Limit precision to the maximum possible number of significant digits in + // an IEEE754 double because we don't need to generate zeros. + const int max_double_digits = 767; + if (precision > max_double_digits) precision = max_double_digits; + format_dragon(f, dragon_flags, precision, buf, exp); + } + if (!fixed && !specs.showpoint) { + // Remove trailing zeros. + auto num_digits = buf.size(); + while (num_digits > 0 && buf[num_digits - 1] == '0') { + --num_digits; + ++exp; + } + buf.try_resize(num_digits); + } + return exp; +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_floating_point<T>::value)> +FMT_CONSTEXPR20 auto write(OutputIt out, T value, + basic_format_specs<Char> specs, locale_ref loc = {}) + -> OutputIt { + if (const_check(!is_supported_floating_point(value))) return out; + float_specs fspecs = parse_float_type_spec(specs); + fspecs.sign = specs.sign; + if (detail::signbit(value)) { // value < 0 is false for NaN so use signbit. + fspecs.sign = sign::minus; + value = -value; + } else if (fspecs.sign == sign::minus) { + fspecs.sign = sign::none; + } + + if (!detail::isfinite(value)) + return write_nonfinite(out, detail::isnan(value), specs, fspecs); + + if (specs.align == align::numeric && fspecs.sign) { + auto it = reserve(out, 1); + *it++ = detail::sign<Char>(fspecs.sign); + out = base_iterator(out, it); + fspecs.sign = sign::none; + if (specs.width != 0) --specs.width; + } + + memory_buffer buffer; + if (fspecs.format == float_format::hex) { + if (fspecs.sign) buffer.push_back(detail::sign<char>(fspecs.sign)); + snprintf_float(convert_float(value), specs.precision, fspecs, buffer); + return write_bytes<align::right>(out, {buffer.data(), buffer.size()}, + specs); + } + int precision = specs.precision >= 0 || specs.type == presentation_type::none + ? specs.precision + : 6; + if (fspecs.format == float_format::exp) { + if (precision == max_value<int>()) + throw_format_error("number is too big"); + else + ++precision; + } else if (fspecs.format != float_format::fixed && precision == 0) { + precision = 1; + } + if (const_check(std::is_same<T, float>())) fspecs.binary32 = true; + int exp = format_float(convert_float(value), precision, fspecs, buffer); + fspecs.precision = precision; + auto f = big_decimal_fp{buffer.data(), static_cast<int>(buffer.size()), exp}; + return write_float(out, f, specs, fspecs, loc); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_fast_float<T>::value)> +FMT_CONSTEXPR20 auto write(OutputIt out, T value) -> OutputIt { + if (is_constant_evaluated()) + return write(out, value, basic_format_specs<Char>()); + if (const_check(!is_supported_floating_point(value))) return out; + + auto fspecs = float_specs(); + if (detail::signbit(value)) { + fspecs.sign = sign::minus; + value = -value; + } + + constexpr auto specs = basic_format_specs<Char>(); + using floaty = conditional_t<std::is_same<T, long double>::value, double, T>; + using uint = typename dragonbox::float_info<floaty>::carrier_uint; + uint mask = exponent_mask<floaty>(); + if ((bit_cast<uint>(value) & mask) == mask) + return write_nonfinite(out, std::isnan(value), specs, fspecs); + + auto dec = dragonbox::to_decimal(static_cast<floaty>(value)); + return write_float(out, dec, specs, fspecs, {}); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_floating_point<T>::value && + !is_fast_float<T>::value)> +inline auto write(OutputIt out, T value) -> OutputIt { + return write(out, value, basic_format_specs<Char>()); +} + +template <typename Char, typename OutputIt> +auto write(OutputIt out, monostate, basic_format_specs<Char> = {}, + locale_ref = {}) -> OutputIt { + FMT_ASSERT(false, ""); + return out; +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR auto write(OutputIt out, basic_string_view<Char> value) + -> OutputIt { + auto it = reserve(out, value.size()); + it = copy_str_noinline<Char>(value.begin(), value.end(), it); + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(is_string<T>::value)> +constexpr auto write(OutputIt out, const T& value) -> OutputIt { + return write<Char>(out, to_string_view(value)); +} + +// FMT_ENABLE_IF() condition separated to workaround an MSVC bug. +template < + typename Char, typename OutputIt, typename T, + bool check = + std::is_enum<T>::value && !std::is_same<T, Char>::value && + mapped_type_constant<T, basic_format_context<OutputIt, Char>>::value != + type::custom_type, + FMT_ENABLE_IF(check)> +FMT_CONSTEXPR auto write(OutputIt out, T value) -> OutputIt { + return write<Char>(out, static_cast<underlying_t<T>>(value)); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_same<T, bool>::value)> +FMT_CONSTEXPR auto write(OutputIt out, T value, + const basic_format_specs<Char>& specs = {}, + locale_ref = {}) -> OutputIt { + return specs.type != presentation_type::none && + specs.type != presentation_type::string + ? write(out, value ? 1 : 0, specs, {}) + : write_bytes(out, value ? "true" : "false", specs); +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR auto write(OutputIt out, Char value) -> OutputIt { + auto it = reserve(out, 1); + *it++ = value; + return base_iterator(out, it); +} + +template <typename Char, typename OutputIt> +FMT_CONSTEXPR_CHAR_TRAITS auto write(OutputIt out, const Char* value) + -> OutputIt { + if (!value) { + throw_format_error("string pointer is null"); + } else { + out = write(out, basic_string_view<Char>(value)); + } + return out; +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_same<T, void>::value)> +auto write(OutputIt out, const T* value, + const basic_format_specs<Char>& specs = {}, locale_ref = {}) + -> OutputIt { + check_pointer_type_spec(specs.type, error_handler()); + return write_ptr<Char>(out, bit_cast<uintptr_t>(value), &specs); +} + +// A write overload that handles implicit conversions. +template <typename Char, typename OutputIt, typename T, + typename Context = basic_format_context<OutputIt, Char>> +FMT_CONSTEXPR auto write(OutputIt out, const T& value) -> enable_if_t< + std::is_class<T>::value && !is_string<T>::value && + !is_floating_point<T>::value && !std::is_same<T, Char>::value && + !std::is_same<const T&, + decltype(arg_mapper<Context>().map(value))>::value, + OutputIt> { + return write<Char>(out, arg_mapper<Context>().map(value)); +} + +template <typename Char, typename OutputIt, typename T, + typename Context = basic_format_context<OutputIt, Char>> +FMT_CONSTEXPR auto write(OutputIt out, const T& value) + -> enable_if_t<mapped_type_constant<T, Context>::value == type::custom_type, + OutputIt> { + using formatter_type = + conditional_t<has_formatter<T, Context>::value, + typename Context::template formatter_type<T>, + fallback_formatter<T, Char>>; + auto ctx = Context(out, {}, {}); + return formatter_type().format(value, ctx); +} + +// An argument visitor that formats the argument and writes it via the output +// iterator. It's a class and not a generic lambda for compatibility with C++11. +template <typename Char> struct default_arg_formatter { + using iterator = buffer_appender<Char>; + using context = buffer_context<Char>; + + iterator out; + basic_format_args<context> args; + locale_ref loc; + + template <typename T> auto operator()(T value) -> iterator { + return write<Char>(out, value); + } + auto operator()(typename basic_format_arg<context>::handle h) -> iterator { + basic_format_parse_context<Char> parse_ctx({}); + context format_ctx(out, args, loc); + h.format(parse_ctx, format_ctx); + return format_ctx.out(); + } +}; + +template <typename Char> struct arg_formatter { + using iterator = buffer_appender<Char>; + using context = buffer_context<Char>; + + iterator out; + const basic_format_specs<Char>& specs; + locale_ref locale; + + template <typename T> + FMT_CONSTEXPR FMT_INLINE auto operator()(T value) -> iterator { + return detail::write(out, value, specs, locale); + } + auto operator()(typename basic_format_arg<context>::handle) -> iterator { + // User-defined types are handled separately because they require access + // to the parse context. + return out; + } +}; + +template <typename Char> struct custom_formatter { + basic_format_parse_context<Char>& parse_ctx; + buffer_context<Char>& ctx; + + void operator()( + typename basic_format_arg<buffer_context<Char>>::handle h) const { + h.format(parse_ctx, ctx); + } + template <typename T> void operator()(T) const {} +}; + +template <typename T> +using is_integer = + bool_constant<is_integral<T>::value && !std::is_same<T, bool>::value && + !std::is_same<T, char>::value && + !std::is_same<T, wchar_t>::value>; + +template <typename ErrorHandler> class width_checker { + public: + explicit FMT_CONSTEXPR width_checker(ErrorHandler& eh) : handler_(eh) {} + + template <typename T, FMT_ENABLE_IF(is_integer<T>::value)> + FMT_CONSTEXPR auto operator()(T value) -> unsigned long long { + if (is_negative(value)) handler_.on_error("negative width"); + return static_cast<unsigned long long>(value); + } + + template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)> + FMT_CONSTEXPR auto operator()(T) -> unsigned long long { + handler_.on_error("width is not integer"); + return 0; + } + + private: + ErrorHandler& handler_; +}; + +template <typename ErrorHandler> class precision_checker { + public: + explicit FMT_CONSTEXPR precision_checker(ErrorHandler& eh) : handler_(eh) {} + + template <typename T, FMT_ENABLE_IF(is_integer<T>::value)> + FMT_CONSTEXPR auto operator()(T value) -> unsigned long long { + if (is_negative(value)) handler_.on_error("negative precision"); + return static_cast<unsigned long long>(value); + } + + template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)> + FMT_CONSTEXPR auto operator()(T) -> unsigned long long { + handler_.on_error("precision is not integer"); + return 0; + } + + private: + ErrorHandler& handler_; +}; + +template <template <typename> class Handler, typename FormatArg, + typename ErrorHandler> +FMT_CONSTEXPR auto get_dynamic_spec(FormatArg arg, ErrorHandler eh) -> int { + unsigned long long value = visit_format_arg(Handler<ErrorHandler>(eh), arg); + if (value > to_unsigned(max_value<int>())) eh.on_error("number is too big"); + return static_cast<int>(value); +} + +template <typename Context, typename ID> +FMT_CONSTEXPR auto get_arg(Context& ctx, ID id) -> + typename Context::format_arg { + auto arg = ctx.arg(id); + if (!arg) ctx.on_error("argument not found"); + return arg; +} + +// The standard format specifier handler with checking. +template <typename Char> class specs_handler : public specs_setter<Char> { + private: + basic_format_parse_context<Char>& parse_context_; + buffer_context<Char>& context_; + + // This is only needed for compatibility with gcc 4.4. + using format_arg = basic_format_arg<buffer_context<Char>>; + + FMT_CONSTEXPR auto get_arg(auto_id) -> format_arg { + return detail::get_arg(context_, parse_context_.next_arg_id()); + } + + FMT_CONSTEXPR auto get_arg(int arg_id) -> format_arg { + parse_context_.check_arg_id(arg_id); + return detail::get_arg(context_, arg_id); + } + + FMT_CONSTEXPR auto get_arg(basic_string_view<Char> arg_id) -> format_arg { + parse_context_.check_arg_id(arg_id); + return detail::get_arg(context_, arg_id); + } + + public: + FMT_CONSTEXPR specs_handler(basic_format_specs<Char>& specs, + basic_format_parse_context<Char>& parse_ctx, + buffer_context<Char>& ctx) + : specs_setter<Char>(specs), parse_context_(parse_ctx), context_(ctx) {} + + template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + this->specs_.width = get_dynamic_spec<width_checker>( + get_arg(arg_id), context_.error_handler()); + } + + template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + this->specs_.precision = get_dynamic_spec<precision_checker>( + get_arg(arg_id), context_.error_handler()); + } + + void on_error(const char* message) { context_.on_error(message); } +}; + +template <template <typename> class Handler, typename Context> +FMT_CONSTEXPR void handle_dynamic_spec(int& value, + arg_ref<typename Context::char_type> ref, + Context& ctx) { + switch (ref.kind) { + case arg_id_kind::none: + break; + case arg_id_kind::index: + value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.index), + ctx.error_handler()); + break; + case arg_id_kind::name: + value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.name), + ctx.error_handler()); + break; + } +} + +#if FMT_USE_USER_DEFINED_LITERALS +template <typename Char> struct udl_formatter { + basic_string_view<Char> str; + + template <typename... T> + auto operator()(T&&... args) const -> std::basic_string<Char> { + return vformat(str, fmt::make_format_args<buffer_context<Char>>(args...)); + } +}; + +# if FMT_USE_NONTYPE_TEMPLATE_ARGS +template <typename T, typename Char, size_t N, + fmt::detail_exported::fixed_string<Char, N> Str> +struct statically_named_arg : view { + static constexpr auto name = Str.data; + + const T& value; + statically_named_arg(const T& v) : value(v) {} +}; + +template <typename T, typename Char, size_t N, + fmt::detail_exported::fixed_string<Char, N> Str> +struct is_named_arg<statically_named_arg<T, Char, N, Str>> : std::true_type {}; + +template <typename T, typename Char, size_t N, + fmt::detail_exported::fixed_string<Char, N> Str> +struct is_statically_named_arg<statically_named_arg<T, Char, N, Str>> + : std::true_type {}; + +template <typename Char, size_t N, + fmt::detail_exported::fixed_string<Char, N> Str> +struct udl_arg { + template <typename T> auto operator=(T&& value) const { + return statically_named_arg<T, Char, N, Str>(std::forward<T>(value)); + } +}; +# else +template <typename Char> struct udl_arg { + const Char* str; + + template <typename T> auto operator=(T&& value) const -> named_arg<Char, T> { + return {str, std::forward<T>(value)}; + } +}; +# endif +#endif // FMT_USE_USER_DEFINED_LITERALS + +template <typename Locale, typename Char> +auto vformat(const Locale& loc, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) + -> std::basic_string<Char> { + basic_memory_buffer<Char> buffer; + detail::vformat_to(buffer, format_str, args, detail::locale_ref(loc)); + return {buffer.data(), buffer.size()}; +} + +using format_func = void (*)(detail::buffer<char>&, int, const char*); + +FMT_API void format_error_code(buffer<char>& out, int error_code, + string_view message) noexcept; + +FMT_API void report_error(format_func func, int error_code, + const char* message) noexcept; +FMT_END_DETAIL_NAMESPACE + +FMT_API auto vsystem_error(int error_code, string_view format_str, + format_args args) -> std::system_error; + +/** + \rst + Constructs :class:`std::system_error` with a message formatted with + ``fmt::format(fmt, args...)``. + *error_code* is a system error code as given by ``errno``. + + **Example**:: + + // This throws std::system_error with the description + // cannot open file 'madeup': No such file or directory + // or similar (system message may vary). + const char* filename = "madeup"; + std::FILE* file = std::fopen(filename, "r"); + if (!file) + throw fmt::system_error(errno, "cannot open file '{}'", filename); + \endrst +*/ +template <typename... T> +auto system_error(int error_code, format_string<T...> fmt, T&&... args) + -> std::system_error { + return vsystem_error(error_code, fmt, fmt::make_format_args(args...)); +} + +/** + \rst + Formats an error message for an error returned by an operating system or a + language runtime, for example a file opening error, and writes it to *out*. + The format is the same as the one used by ``std::system_error(ec, message)`` + where ``ec`` is ``std::error_code(error_code, std::generic_category()})``. + It is implementation-defined but normally looks like: + + .. parsed-literal:: + *<message>*: *<system-message>* + + where *<message>* is the passed message and *<system-message>* is the system + message corresponding to the error code. + *error_code* is a system error code as given by ``errno``. + \endrst + */ +FMT_API void format_system_error(detail::buffer<char>& out, int error_code, + const char* message) noexcept; + +// Reports a system error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_system_error(int error_code, const char* message) noexcept; + +/** Fast integer formatter. */ +class format_int { + private: + // Buffer should be large enough to hold all digits (digits10 + 1), + // a sign and a null character. + enum { buffer_size = std::numeric_limits<unsigned long long>::digits10 + 3 }; + mutable char buffer_[buffer_size]; + char* str_; + + template <typename UInt> auto format_unsigned(UInt value) -> char* { + auto n = static_cast<detail::uint32_or_64_or_128_t<UInt>>(value); + return detail::format_decimal(buffer_, n, buffer_size - 1).begin; + } + + template <typename Int> auto format_signed(Int value) -> char* { + auto abs_value = static_cast<detail::uint32_or_64_or_128_t<Int>>(value); + bool negative = value < 0; + if (negative) abs_value = 0 - abs_value; + auto begin = format_unsigned(abs_value); + if (negative) *--begin = '-'; + return begin; + } + + public: + explicit format_int(int value) : str_(format_signed(value)) {} + explicit format_int(long value) : str_(format_signed(value)) {} + explicit format_int(long long value) : str_(format_signed(value)) {} + explicit format_int(unsigned value) : str_(format_unsigned(value)) {} + explicit format_int(unsigned long value) : str_(format_unsigned(value)) {} + explicit format_int(unsigned long long value) + : str_(format_unsigned(value)) {} + + /** Returns the number of characters written to the output buffer. */ + auto size() const -> size_t { + return detail::to_unsigned(buffer_ - str_ + buffer_size - 1); + } + + /** + Returns a pointer to the output buffer content. No terminating null + character is appended. + */ + auto data() const -> const char* { return str_; } + + /** + Returns a pointer to the output buffer content with terminating null + character appended. + */ + auto c_str() const -> const char* { + buffer_[buffer_size - 1] = '\0'; + return str_; + } + + /** + \rst + Returns the content of the output buffer as an ``std::string``. + \endrst + */ + auto str() const -> std::string { return std::string(str_, size()); } +}; + +template <typename T, typename Char> +template <typename FormatContext> +FMT_CONSTEXPR FMT_INLINE auto +formatter<T, Char, + enable_if_t<detail::type_constant<T, Char>::value != + detail::type::custom_type>>::format(const T& val, + FormatContext& ctx) + const -> decltype(ctx.out()) { + if (specs_.width_ref.kind != detail::arg_id_kind::none || + specs_.precision_ref.kind != detail::arg_id_kind::none) { + auto specs = specs_; + detail::handle_dynamic_spec<detail::width_checker>(specs.width, + specs.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs.precision, specs.precision_ref, ctx); + return detail::write<Char>(ctx.out(), val, specs, ctx.locale()); + } + return detail::write<Char>(ctx.out(), val, specs_, ctx.locale()); +} + +template <typename Char> +struct formatter<void*, Char> : formatter<const void*, Char> { + template <typename FormatContext> + auto format(void* val, FormatContext& ctx) const -> decltype(ctx.out()) { + return formatter<const void*, Char>::format(val, ctx); + } +}; + +template <typename Char, size_t N> +struct formatter<Char[N], Char> : formatter<basic_string_view<Char>, Char> { + template <typename FormatContext> + FMT_CONSTEXPR auto format(const Char* val, FormatContext& ctx) const + -> decltype(ctx.out()) { + return formatter<basic_string_view<Char>, Char>::format(val, ctx); + } +}; + +// A formatter for types known only at run time such as variant alternatives. +// +// Usage: +// using variant = std::variant<int, std::string>; +// template <> +// struct formatter<variant>: dynamic_formatter<> { +// auto format(const variant& v, format_context& ctx) { +// return visit([&](const auto& val) { +// return dynamic_formatter<>::format(val, ctx); +// }, v); +// } +// }; +template <typename Char = char> class dynamic_formatter { + private: + detail::dynamic_format_specs<Char> specs_; + const Char* format_str_; + + struct null_handler : detail::error_handler { + void on_align(align_t) {} + void on_sign(sign_t) {} + void on_hash() {} + }; + + template <typename Context> void handle_specs(Context& ctx) { + detail::handle_dynamic_spec<detail::width_checker>(specs_.width, + specs_.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + } + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + format_str_ = ctx.begin(); + // Checks are deferred to formatting time when the argument type is known. + detail::dynamic_specs_handler<ParseContext> handler(specs_, ctx); + return detail::parse_format_specs(ctx.begin(), ctx.end(), handler); + } + + template <typename T, typename FormatContext> + auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) { + handle_specs(ctx); + detail::specs_checker<null_handler> checker( + null_handler(), detail::mapped_type_constant<T, FormatContext>::value); + checker.on_align(specs_.align); + if (specs_.sign != sign::none) checker.on_sign(specs_.sign); + if (specs_.alt) checker.on_hash(); + if (specs_.precision >= 0) checker.end_precision(); + return detail::write<Char>(ctx.out(), val, specs_, ctx.locale()); + } +}; + +/** + \rst + Converts ``p`` to ``const void*`` for pointer formatting. + + **Example**:: + + auto s = fmt::format("{}", fmt::ptr(p)); + \endrst + */ +template <typename T> auto ptr(T p) -> const void* { + static_assert(std::is_pointer<T>::value, ""); + return detail::bit_cast<const void*>(p); +} +template <typename T> auto ptr(const std::unique_ptr<T>& p) -> const void* { + return p.get(); +} +template <typename T> auto ptr(const std::shared_ptr<T>& p) -> const void* { + return p.get(); +} + +/** + \rst + Converts ``e`` to the underlying type. + + **Example**:: + + enum class color { red, green, blue }; + auto s = fmt::format("{}", fmt::underlying(color::red)); + \endrst + */ +template <typename Enum> +constexpr auto underlying(Enum e) noexcept -> underlying_t<Enum> { + return static_cast<underlying_t<Enum>>(e); +} + +namespace enums { +template <typename Enum, FMT_ENABLE_IF(std::is_enum<Enum>::value)> +constexpr auto format_as(Enum e) noexcept -> underlying_t<Enum> { + return static_cast<underlying_t<Enum>>(e); +} +} // namespace enums + +class bytes { + private: + string_view data_; + friend struct formatter<bytes>; + + public: + explicit bytes(string_view data) : data_(data) {} +}; + +template <> struct formatter<bytes> { + private: + detail::dynamic_format_specs<char> specs_; + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + using handler_type = detail::dynamic_specs_handler<ParseContext>; + detail::specs_checker<handler_type> handler(handler_type(specs_, ctx), + detail::type::string_type); + auto it = parse_format_specs(ctx.begin(), ctx.end(), handler); + detail::check_string_type_spec(specs_.type, ctx.error_handler()); + return it; + } + + template <typename FormatContext> + auto format(bytes b, FormatContext& ctx) -> decltype(ctx.out()) { + detail::handle_dynamic_spec<detail::width_checker>(specs_.width, + specs_.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + return detail::write_bytes(ctx.out(), b.data_, specs_); + } +}; + +// group_digits_view is not derived from view because it copies the argument. +template <typename T> struct group_digits_view { T value; }; + +/** + \rst + Returns a view that formats an integer value using ',' as a locale-independent + thousands separator. + + **Example**:: + + fmt::print("{}", fmt::group_digits(12345)); + // Output: "12,345" + \endrst + */ +template <typename T> auto group_digits(T value) -> group_digits_view<T> { + return {value}; +} + +template <typename T> struct formatter<group_digits_view<T>> : formatter<T> { + private: + detail::dynamic_format_specs<char> specs_; + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + using handler_type = detail::dynamic_specs_handler<ParseContext>; + detail::specs_checker<handler_type> handler(handler_type(specs_, ctx), + detail::type::int_type); + auto it = parse_format_specs(ctx.begin(), ctx.end(), handler); + detail::check_string_type_spec(specs_.type, ctx.error_handler()); + return it; + } + + template <typename FormatContext> + auto format(group_digits_view<T> t, FormatContext& ctx) + -> decltype(ctx.out()) { + detail::handle_dynamic_spec<detail::width_checker>(specs_.width, + specs_.width_ref, ctx); + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + return detail::write_int_localized( + ctx.out(), static_cast<detail::uint64_or_128_t<T>>(t.value), 0, specs_, + detail::digit_grouping<char>({"\3", ','})); + } +}; + +template <typename It, typename Sentinel, typename Char = char> +struct join_view : detail::view { + It begin; + Sentinel end; + basic_string_view<Char> sep; + + join_view(It b, Sentinel e, basic_string_view<Char> s) + : begin(b), end(e), sep(s) {} +}; + +template <typename It, typename Sentinel, typename Char> +struct formatter<join_view<It, Sentinel, Char>, Char> { + private: + using value_type = +#ifdef __cpp_lib_ranges + std::iter_value_t<It>; +#else + typename std::iterator_traits<It>::value_type; +#endif + using context = buffer_context<Char>; + using mapper = detail::arg_mapper<context>; + + template <typename T, FMT_ENABLE_IF(has_formatter<T, context>::value)> + static auto map(const T& value) -> const T& { + return value; + } + template <typename T, FMT_ENABLE_IF(!has_formatter<T, context>::value)> + static auto map(const T& value) -> decltype(mapper().map(value)) { + return mapper().map(value); + } + + using formatter_type = + conditional_t<is_formattable<value_type, Char>::value, + formatter<remove_cvref_t<decltype(map( + std::declval<const value_type&>()))>, + Char>, + detail::fallback_formatter<value_type, Char>>; + + formatter_type value_formatter_; + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return value_formatter_.parse(ctx); + } + + template <typename FormatContext> + auto format(const join_view<It, Sentinel, Char>& value, + FormatContext& ctx) const -> decltype(ctx.out()) { + auto it = value.begin; + auto out = ctx.out(); + if (it != value.end) { + out = value_formatter_.format(map(*it), ctx); + ++it; + while (it != value.end) { + out = detail::copy_str<Char>(value.sep.begin(), value.sep.end(), out); + ctx.advance_to(out); + out = value_formatter_.format(map(*it), ctx); + ++it; + } + } + return out; + } +}; + +/** + Returns a view that formats the iterator range `[begin, end)` with elements + separated by `sep`. + */ +template <typename It, typename Sentinel> +auto join(It begin, Sentinel end, string_view sep) -> join_view<It, Sentinel> { + return {begin, end, sep}; +} + +/** + \rst + Returns a view that formats `range` with elements separated by `sep`. + + **Example**:: + + std::vector<int> v = {1, 2, 3}; + fmt::print("{}", fmt::join(v, ", ")); + // Output: "1, 2, 3" + + ``fmt::join`` applies passed format specifiers to the range elements:: + + fmt::print("{:02}", fmt::join(v, ", ")); + // Output: "01, 02, 03" + \endrst + */ +template <typename Range> +auto join(Range&& range, string_view sep) + -> join_view<detail::iterator_t<Range>, detail::sentinel_t<Range>> { + return join(std::begin(range), std::end(range), sep); +} + +/** + \rst + Converts *value* to ``std::string`` using the default format for type *T*. + + **Example**:: + + #include <fmt/format.h> + + std::string answer = fmt::to_string(42); + \endrst + */ +template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> +inline auto to_string(const T& value) -> std::string { + auto result = std::string(); + detail::write<char>(std::back_inserter(result), value); + return result; +} + +template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> +FMT_NODISCARD inline auto to_string(T value) -> std::string { + // The buffer should be large enough to store the number including the sign + // or "false" for bool. + constexpr int max_size = detail::digits10<T>() + 2; + char buffer[max_size > 5 ? static_cast<unsigned>(max_size) : 5]; + char* begin = buffer; + return std::string(begin, detail::write<char>(begin, value)); +} + +template <typename Char, size_t SIZE> +FMT_NODISCARD auto to_string(const basic_memory_buffer<Char, SIZE>& buf) + -> std::basic_string<Char> { + auto size = buf.size(); + detail::assume(size < std::basic_string<Char>().max_size()); + return std::basic_string<Char>(buf.data(), size); +} + +FMT_BEGIN_DETAIL_NAMESPACE + +template <typename Char> +void vformat_to( + buffer<Char>& buf, basic_string_view<Char> fmt, + basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args, + locale_ref loc) { + // workaround for msvc bug regarding name-lookup in module + // link names into function scope + using detail::arg_formatter; + using detail::buffer_appender; + using detail::custom_formatter; + using detail::default_arg_formatter; + using detail::get_arg; + using detail::locale_ref; + using detail::parse_format_specs; + using detail::specs_checker; + using detail::specs_handler; + using detail::to_unsigned; + using detail::type; + using detail::write; + auto out = buffer_appender<Char>(buf); + if (fmt.size() == 2 && equal2(fmt.data(), "{}")) { + auto arg = args.get(0); + if (!arg) error_handler().on_error("argument not found"); + visit_format_arg(default_arg_formatter<Char>{out, args, loc}, arg); + return; + } + + struct format_handler : error_handler { + basic_format_parse_context<Char> parse_context; + buffer_context<Char> context; + + format_handler(buffer_appender<Char> p_out, basic_string_view<Char> str, + basic_format_args<buffer_context<Char>> p_args, + locale_ref p_loc) + : parse_context(str), context(p_out, p_args, p_loc) {} + + void on_text(const Char* begin, const Char* end) { + auto text = basic_string_view<Char>(begin, to_unsigned(end - begin)); + context.advance_to(write<Char>(context.out(), text)); + } + + FMT_CONSTEXPR auto on_arg_id() -> int { + return parse_context.next_arg_id(); + } + FMT_CONSTEXPR auto on_arg_id(int id) -> int { + return parse_context.check_arg_id(id), id; + } + FMT_CONSTEXPR auto on_arg_id(basic_string_view<Char> id) -> int { + int arg_id = context.arg_id(id); + if (arg_id < 0) on_error("argument not found"); + return arg_id; + } + + FMT_INLINE void on_replacement_field(int id, const Char*) { + auto arg = get_arg(context, id); + context.advance_to(visit_format_arg( + default_arg_formatter<Char>{context.out(), context.args(), + context.locale()}, + arg)); + } + + auto on_format_specs(int id, const Char* begin, const Char* end) + -> const Char* { + auto arg = get_arg(context, id); + if (arg.type() == type::custom_type) { + parse_context.advance_to(parse_context.begin() + + (begin - &*parse_context.begin())); + visit_format_arg(custom_formatter<Char>{parse_context, context}, arg); + return parse_context.begin(); + } + auto specs = basic_format_specs<Char>(); + specs_checker<specs_handler<Char>> handler( + specs_handler<Char>(specs, parse_context, context), arg.type()); + begin = parse_format_specs(begin, end, handler); + if (begin == end || *begin != '}') + on_error("missing '}' in format string"); + auto f = arg_formatter<Char>{context.out(), specs, context.locale()}; + context.advance_to(visit_format_arg(f, arg)); + return begin; + } + }; + detail::parse_format_string<false>(fmt, format_handler(out, fmt, args, loc)); +} + +#ifndef FMT_HEADER_ONLY +extern template FMT_API auto thousands_sep_impl<char>(locale_ref) + -> thousands_sep_result<char>; +extern template FMT_API auto thousands_sep_impl<wchar_t>(locale_ref) + -> thousands_sep_result<wchar_t>; +extern template FMT_API auto decimal_point_impl(locale_ref) -> char; +extern template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t; +#endif // FMT_HEADER_ONLY + +FMT_END_DETAIL_NAMESPACE + +#if FMT_USE_USER_DEFINED_LITERALS +inline namespace literals { +/** + \rst + User-defined literal equivalent of :func:`fmt::arg`. + + **Example**:: + + using namespace fmt::literals; + fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23); + \endrst + */ +# if FMT_USE_NONTYPE_TEMPLATE_ARGS +template <detail_exported::fixed_string Str> constexpr auto operator""_a() { + using char_t = remove_cvref_t<decltype(Str.data[0])>; + return detail::udl_arg<char_t, sizeof(Str.data) / sizeof(char_t), Str>(); +} +# else +constexpr auto operator"" _a(const char* s, size_t) -> detail::udl_arg<char> { + return {s}; +} +# endif +} // namespace literals +#endif // FMT_USE_USER_DEFINED_LITERALS + +template <typename Locale, FMT_ENABLE_IF(detail::is_locale<Locale>::value)> +inline auto vformat(const Locale& loc, string_view fmt, format_args args) + -> std::string { + return detail::vformat(loc, fmt, args); +} + +template <typename Locale, typename... T, + FMT_ENABLE_IF(detail::is_locale<Locale>::value)> +inline auto format(const Locale& loc, format_string<T...> fmt, T&&... args) + -> std::string { + return vformat(loc, string_view(fmt), fmt::make_format_args(args...)); +} + +template <typename OutputIt, typename Locale, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value&& + detail::is_locale<Locale>::value)> +auto vformat_to(OutputIt out, const Locale& loc, string_view fmt, + format_args args) -> OutputIt { + using detail::get_buffer; + auto&& buf = get_buffer<char>(out); + detail::vformat_to(buf, fmt, args, detail::locale_ref(loc)); + return detail::get_iterator(buf); +} + +template <typename OutputIt, typename Locale, typename... T, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value&& + detail::is_locale<Locale>::value)> +FMT_INLINE auto format_to(OutputIt out, const Locale& loc, + format_string<T...> fmt, T&&... args) -> OutputIt { + return vformat_to(out, loc, fmt, fmt::make_format_args(args...)); +} + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#ifdef FMT_HEADER_ONLY +# define FMT_FUNC inline +# include "format-inl.h" +#else +# define FMT_FUNC +#endif + +#endif // FMT_FORMAT_H_ diff --git a/src/fmtlib/fmt/locale.h b/src/fmtlib/fmt/locale.h new file mode 100644 index 0000000..7571b52 --- /dev/null +++ b/src/fmtlib/fmt/locale.h @@ -0,0 +1,2 @@ +#include "xchar.h" +#warning fmt/locale.h is deprecated, include fmt/format.h or fmt/xchar.h instead diff --git a/src/fmtlib/fmt/os.h b/src/fmtlib/fmt/os.h new file mode 100644 index 0000000..d82be11 --- /dev/null +++ b/src/fmtlib/fmt/os.h @@ -0,0 +1,478 @@ +// Formatting library for C++ - optional OS-specific functionality +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_OS_H_ +#define FMT_OS_H_ + +#include <cerrno> +#include <cstddef> +#include <cstdio> +#include <system_error> // std::system_error + +#if defined __APPLE__ || defined(__FreeBSD__) +# include <xlocale.h> // for LC_NUMERIC_MASK on OS X +#endif + +#include "format.h" + +#ifndef FMT_USE_FCNTL +// UWP doesn't provide _pipe. +# if FMT_HAS_INCLUDE("winapifamily.h") +# include <winapifamily.h> +# endif +# if (FMT_HAS_INCLUDE(<fcntl.h>) || defined(__APPLE__) || \ + defined(__linux__)) && \ + (!defined(WINAPI_FAMILY) || \ + (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) +# include <fcntl.h> // for O_RDONLY +# define FMT_USE_FCNTL 1 +# else +# define FMT_USE_FCNTL 0 +# endif +#endif + +#ifndef FMT_POSIX +# if defined(_WIN32) && !defined(__MINGW32__) +// Fix warnings about deprecated symbols. +# define FMT_POSIX(call) _##call +# else +# define FMT_POSIX(call) call +# endif +#endif + +// Calls to system functions are wrapped in FMT_SYSTEM for testability. +#ifdef FMT_SYSTEM +# define FMT_POSIX_CALL(call) FMT_SYSTEM(call) +#else +# define FMT_SYSTEM(call) ::call +# ifdef _WIN32 +// Fix warnings about deprecated symbols. +# define FMT_POSIX_CALL(call) ::_##call +# else +# define FMT_POSIX_CALL(call) ::call +# endif +#endif + +// Retries the expression while it evaluates to error_result and errno +// equals to EINTR. +#ifndef _WIN32 +# define FMT_RETRY_VAL(result, expression, error_result) \ + do { \ + (result) = (expression); \ + } while ((result) == (error_result) && errno == EINTR) +#else +# define FMT_RETRY_VAL(result, expression, error_result) result = (expression) +#endif + +#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1) + +FMT_BEGIN_NAMESPACE +FMT_MODULE_EXPORT_BEGIN + +/** + \rst + A reference to a null-terminated string. It can be constructed from a C + string or ``std::string``. + + You can use one of the following type aliases for common character types: + + +---------------+-----------------------------+ + | Type | Definition | + +===============+=============================+ + | cstring_view | basic_cstring_view<char> | + +---------------+-----------------------------+ + | wcstring_view | basic_cstring_view<wchar_t> | + +---------------+-----------------------------+ + + This class is most useful as a parameter type to allow passing + different types of strings to a function, for example:: + + template <typename... Args> + std::string format(cstring_view format_str, const Args & ... args); + + format("{}", 42); + format(std::string("{}"), 42); + \endrst + */ +template <typename Char> class basic_cstring_view { + private: + const Char* data_; + + public: + /** Constructs a string reference object from a C string. */ + basic_cstring_view(const Char* s) : data_(s) {} + + /** + \rst + Constructs a string reference from an ``std::string`` object. + \endrst + */ + basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {} + + /** Returns the pointer to a C string. */ + const Char* c_str() const { return data_; } +}; + +using cstring_view = basic_cstring_view<char>; +using wcstring_view = basic_cstring_view<wchar_t>; + +template <typename Char> struct formatter<std::error_code, Char> { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename FormatContext> + FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + out = detail::write_bytes(out, ec.category().name(), + basic_format_specs<Char>()); + out = detail::write<Char>(out, Char(':')); + out = detail::write<Char>(out, ec.value()); + return out; + } +}; + +#ifdef _WIN32 +FMT_API const std::error_category& system_category() noexcept; + +FMT_BEGIN_DETAIL_NAMESPACE +// A converter from UTF-16 to UTF-8. +// It is only provided for Windows since other systems support UTF-8 natively. +class utf16_to_utf8 { + private: + memory_buffer buffer_; + + public: + utf16_to_utf8() {} + FMT_API explicit utf16_to_utf8(basic_string_view<wchar_t> s); + operator string_view() const { return string_view(&buffer_[0], size()); } + size_t size() const { return buffer_.size() - 1; } + const char* c_str() const { return &buffer_[0]; } + std::string str() const { return std::string(&buffer_[0], size()); } + + // Performs conversion returning a system error code instead of + // throwing exception on conversion error. This method may still throw + // in case of memory allocation error. + FMT_API int convert(basic_string_view<wchar_t> s); +}; + +FMT_API void format_windows_error(buffer<char>& out, int error_code, + const char* message) noexcept; +FMT_END_DETAIL_NAMESPACE + +FMT_API std::system_error vwindows_error(int error_code, string_view format_str, + format_args args); + +/** + \rst + Constructs a :class:`std::system_error` object with the description + of the form + + .. parsed-literal:: + *<message>*: *<system-message>* + + where *<message>* is the formatted message and *<system-message>* is the + system message corresponding to the error code. + *error_code* is a Windows error code as given by ``GetLastError``. + If *error_code* is not a valid error code such as -1, the system message + will look like "error -1". + + **Example**:: + + // This throws a system_error with the description + // cannot open file 'madeup': The system cannot find the file specified. + // or similar (system message may vary). + const char *filename = "madeup"; + LPOFSTRUCT of = LPOFSTRUCT(); + HFILE file = OpenFile(filename, &of, OF_READ); + if (file == HFILE_ERROR) { + throw fmt::windows_error(GetLastError(), + "cannot open file '{}'", filename); + } + \endrst +*/ +template <typename... Args> +std::system_error windows_error(int error_code, string_view message, + const Args&... args) { + return vwindows_error(error_code, message, fmt::make_format_args(args...)); +} + +// Reports a Windows error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_windows_error(int error_code, const char* message) noexcept; +#else +inline const std::error_category& system_category() noexcept { + return std::system_category(); +} +#endif // _WIN32 + +// std::system is not available on some platforms such as iOS (#2248). +#ifdef __OSX__ +template <typename S, typename... Args, typename Char = char_t<S>> +void say(const S& format_str, Args&&... args) { + std::system(format("say \"{}\"", format(format_str, args...)).c_str()); +} +#endif + +// A buffered file. +class buffered_file { + private: + FILE* file_; + + friend class file; + + explicit buffered_file(FILE* f) : file_(f) {} + + public: + buffered_file(const buffered_file&) = delete; + void operator=(const buffered_file&) = delete; + + // Constructs a buffered_file object which doesn't represent any file. + buffered_file() noexcept : file_(nullptr) {} + + // Destroys the object closing the file it represents if any. + FMT_API ~buffered_file() noexcept; + + public: + buffered_file(buffered_file&& other) noexcept : file_(other.file_) { + other.file_ = nullptr; + } + + buffered_file& operator=(buffered_file&& other) { + close(); + file_ = other.file_; + other.file_ = nullptr; + return *this; + } + + // Opens a file. + FMT_API buffered_file(cstring_view filename, cstring_view mode); + + // Closes the file. + FMT_API void close(); + + // Returns the pointer to a FILE object representing this file. + FILE* get() const noexcept { return file_; } + + FMT_API int descriptor() const; + + void vprint(string_view format_str, format_args args) { + fmt::vprint(file_, format_str, args); + } + + template <typename... Args> + inline void print(string_view format_str, const Args&... args) { + vprint(format_str, fmt::make_format_args(args...)); + } +}; + +#if FMT_USE_FCNTL +// A file. Closed file is represented by a file object with descriptor -1. +// Methods that are not declared with noexcept may throw +// fmt::system_error in case of failure. Note that some errors such as +// closing the file multiple times will cause a crash on Windows rather +// than an exception. You can get standard behavior by overriding the +// invalid parameter handler with _set_invalid_parameter_handler. +class FMT_API file { + private: + int fd_; // File descriptor. + + // Constructs a file object with a given descriptor. + explicit file(int fd) : fd_(fd) {} + + public: + // Possible values for the oflag argument to the constructor. + enum { + RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only. + WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only. + RDWR = FMT_POSIX(O_RDWR), // Open for reading and writing. + CREATE = FMT_POSIX(O_CREAT), // Create if the file doesn't exist. + APPEND = FMT_POSIX(O_APPEND), // Open in append mode. + TRUNC = FMT_POSIX(O_TRUNC) // Truncate the content of the file. + }; + + // Constructs a file object which doesn't represent any file. + file() noexcept : fd_(-1) {} + + // Opens a file and constructs a file object representing this file. + file(cstring_view path, int oflag); + + public: + file(const file&) = delete; + void operator=(const file&) = delete; + + file(file&& other) noexcept : fd_(other.fd_) { other.fd_ = -1; } + + // Move assignment is not noexcept because close may throw. + file& operator=(file&& other) { + close(); + fd_ = other.fd_; + other.fd_ = -1; + return *this; + } + + // Destroys the object closing the file it represents if any. + ~file() noexcept; + + // Returns the file descriptor. + int descriptor() const noexcept { return fd_; } + + // Closes the file. + void close(); + + // Returns the file size. The size has signed type for consistency with + // stat::st_size. + long long size() const; + + // Attempts to read count bytes from the file into the specified buffer. + size_t read(void* buffer, size_t count); + + // Attempts to write count bytes from the specified buffer to the file. + size_t write(const void* buffer, size_t count); + + // Duplicates a file descriptor with the dup function and returns + // the duplicate as a file object. + static file dup(int fd); + + // Makes fd be the copy of this file descriptor, closing fd first if + // necessary. + void dup2(int fd); + + // Makes fd be the copy of this file descriptor, closing fd first if + // necessary. + void dup2(int fd, std::error_code& ec) noexcept; + + // Creates a pipe setting up read_end and write_end file objects for reading + // and writing respectively. + static void pipe(file& read_end, file& write_end); + + // Creates a buffered_file object associated with this file and detaches + // this file object from the file. + buffered_file fdopen(const char* mode); +}; + +// Returns the memory page size. +long getpagesize(); + +FMT_BEGIN_DETAIL_NAMESPACE + +struct buffer_size { + buffer_size() = default; + size_t value = 0; + buffer_size operator=(size_t val) const { + auto bs = buffer_size(); + bs.value = val; + return bs; + } +}; + +struct ostream_params { + int oflag = file::WRONLY | file::CREATE | file::TRUNC; + size_t buffer_size = BUFSIZ > 32768 ? BUFSIZ : 32768; + + ostream_params() {} + + template <typename... T> + ostream_params(T... params, int new_oflag) : ostream_params(params...) { + oflag = new_oflag; + } + + template <typename... T> + ostream_params(T... params, detail::buffer_size bs) + : ostream_params(params...) { + this->buffer_size = bs.value; + } + +// Intel has a bug that results in failure to deduce a constructor +// for empty parameter packs. +# if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 2000 + ostream_params(int new_oflag) : oflag(new_oflag) {} + ostream_params(detail::buffer_size bs) : buffer_size(bs.value) {} +# endif +}; + +FMT_END_DETAIL_NAMESPACE + +// Added {} below to work around default constructor error known to +// occur in Xcode versions 7.2.1 and 8.2.1. +constexpr detail::buffer_size buffer_size{}; + +/** A fast output stream which is not thread-safe. */ +class FMT_API ostream final : private detail::buffer<char> { + private: + file file_; + + void grow(size_t) override; + + ostream(cstring_view path, const detail::ostream_params& params) + : file_(path, params.oflag) { + set(new char[params.buffer_size], params.buffer_size); + } + + public: + ostream(ostream&& other) + : detail::buffer<char>(other.data(), other.size(), other.capacity()), + file_(std::move(other.file_)) { + other.clear(); + other.set(nullptr, 0); + } + ~ostream() { + flush(); + delete[] data(); + } + + void flush() { + if (size() == 0) return; + file_.write(data(), size()); + clear(); + } + + template <typename... T> + friend ostream output_file(cstring_view path, T... params); + + void close() { + flush(); + file_.close(); + } + + /** + Formats ``args`` according to specifications in ``fmt`` and writes the + output to the file. + */ + template <typename... T> void print(format_string<T...> fmt, T&&... args) { + vformat_to(detail::buffer_appender<char>(*this), fmt, + fmt::make_format_args(args...)); + } +}; + +/** + \rst + Opens a file for writing. Supported parameters passed in *params*: + + * ``<integer>``: Flags passed to `open + <https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html>`_ + (``file::WRONLY | file::CREATE | file::TRUNC`` by default) + * ``buffer_size=<integer>``: Output buffer size + + **Example**:: + + auto out = fmt::output_file("guide.txt"); + out.print("Don't {}", "Panic"); + \endrst + */ +template <typename... T> +inline ostream output_file(cstring_view path, T... params) { + return {path, detail::ostream_params(params...)}; +} +#endif // FMT_USE_FCNTL + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_OS_H_ diff --git a/src/fmtlib/fmt/ostream.h b/src/fmtlib/fmt/ostream.h new file mode 100644 index 0000000..394d947 --- /dev/null +++ b/src/fmtlib/fmt/ostream.h @@ -0,0 +1,213 @@ +// Formatting library for C++ - std::ostream support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_OSTREAM_H_ +#define FMT_OSTREAM_H_ + +#include <fstream> +#include <ostream> + +#include "format.h" + +FMT_BEGIN_NAMESPACE + +template <typename OutputIt, typename Char> class basic_printf_context; + +namespace detail { + +// Checks if T has a user-defined operator<<. +template <typename T, typename Char, typename Enable = void> +class is_streamable { + private: + template <typename U> + static auto test(int) + -> bool_constant<sizeof(std::declval<std::basic_ostream<Char>&>() + << std::declval<U>()) != 0>; + + template <typename> static auto test(...) -> std::false_type; + + using result = decltype(test<T>(0)); + + public: + is_streamable() = default; + + static const bool value = result::value; +}; + +// Formatting of built-in types and arrays is intentionally disabled because +// it's handled by standard (non-ostream) formatters. +template <typename T, typename Char> +struct is_streamable< + T, Char, + enable_if_t< + std::is_arithmetic<T>::value || std::is_array<T>::value || + std::is_pointer<T>::value || std::is_same<T, char8_type>::value || + std::is_convertible<T, fmt::basic_string_view<Char>>::value || + std::is_same<T, std_string_view<Char>>::value || + (std::is_convertible<T, int>::value && !std::is_enum<T>::value)>> + : std::false_type {}; + +template <typename Char> FILE* get_file(std::basic_filebuf<Char>&) { + return nullptr; +} + +struct dummy_filebuf { + FILE* _Myfile; +}; +template <typename T, typename U = int> struct ms_filebuf { + using type = dummy_filebuf; +}; +template <typename T> struct ms_filebuf<T, decltype(T::_Myfile, 0)> { + using type = T; +}; +using filebuf_type = ms_filebuf<std::filebuf>::type; + +FILE* get_file(filebuf_type& buf); + +// Generate a unique explicit instantion in every translation unit using a tag +// type in an anonymous namespace. +namespace { +struct filebuf_access_tag {}; +} // namespace +template <typename Tag, typename FileMemberPtr, FileMemberPtr file> +class filebuf_access { + friend FILE* get_file(filebuf_type& buf) { return buf.*file; } +}; +template class filebuf_access<filebuf_access_tag, + decltype(&filebuf_type::_Myfile), + &filebuf_type::_Myfile>; + +inline bool write(std::filebuf& buf, fmt::string_view data) { + FILE* f = get_file(buf); + if (!f) return false; + print(f, data); + return true; +} +inline bool write(std::wfilebuf&, fmt::basic_string_view<wchar_t>) { + return false; +} + +// Write the content of buf to os. +// It is a separate function rather than a part of vprint to simplify testing. +template <typename Char> +void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) { + if (const_check(FMT_MSC_VERSION)) { + auto filebuf = dynamic_cast<std::basic_filebuf<Char>*>(os.rdbuf()); + if (filebuf && write(*filebuf, {buf.data(), buf.size()})) return; + } + const Char* buf_data = buf.data(); + using unsigned_streamsize = std::make_unsigned<std::streamsize>::type; + unsigned_streamsize size = buf.size(); + unsigned_streamsize max_size = to_unsigned(max_value<std::streamsize>()); + do { + unsigned_streamsize n = size <= max_size ? size : max_size; + os.write(buf_data, static_cast<std::streamsize>(n)); + buf_data += n; + size -= n; + } while (size != 0); +} + +template <typename Char, typename T> +void format_value(buffer<Char>& buf, const T& value, + locale_ref loc = locale_ref()) { + auto&& format_buf = formatbuf<std::basic_streambuf<Char>>(buf); + auto&& output = std::basic_ostream<Char>(&format_buf); +#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) + if (loc) output.imbue(loc.get<std::locale>()); +#endif + output << value; + output.exceptions(std::ios_base::failbit | std::ios_base::badbit); +} + +template <typename T> struct streamed_view { const T& value; }; + +} // namespace detail + +// Formats an object of type T that has an overloaded ostream operator<<. +template <typename Char> +struct basic_ostream_formatter : formatter<basic_string_view<Char>, Char> { + template <typename T, typename OutputIt> + auto format(const T& value, basic_format_context<OutputIt, Char>& ctx) const + -> OutputIt { + auto buffer = basic_memory_buffer<Char>(); + format_value(buffer, value, ctx.locale()); + return formatter<basic_string_view<Char>, Char>::format( + {buffer.data(), buffer.size()}, ctx); + } +}; + +using ostream_formatter = basic_ostream_formatter<char>; + +template <typename T> +struct formatter<detail::streamed_view<T>> : ostream_formatter { + template <typename OutputIt> + auto format(detail::streamed_view<T> view, + basic_format_context<OutputIt, char>& ctx) const -> OutputIt { + return ostream_formatter::format(view.value, ctx); + } +}; + +/** + \rst + Returns a view that formats `value` via an ostream ``operator<<``. + + **Example**:: + + fmt::print("Current thread id: {}\n", + fmt::streamed(std::this_thread::get_id())); + \endrst + */ +template <typename T> +auto streamed(const T& value) -> detail::streamed_view<T> { + return {value}; +} + +namespace detail { + +// Formats an object of type T that has an overloaded ostream operator<<. +template <typename T, typename Char> +struct fallback_formatter<T, Char, enable_if_t<is_streamable<T, Char>::value>> + : basic_ostream_formatter<Char> { + using basic_ostream_formatter<Char>::format; +}; + +} // namespace detail + +FMT_MODULE_EXPORT template <typename Char> +void vprint(std::basic_ostream<Char>& os, + basic_string_view<type_identity_t<Char>> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) { + auto buffer = basic_memory_buffer<Char>(); + detail::vformat_to(buffer, format_str, args); + detail::write_buffer(os, buffer); +} + +/** + \rst + Prints formatted data to the stream *os*. + + **Example**:: + + fmt::print(cerr, "Don't {}!", "panic"); + \endrst + */ +FMT_MODULE_EXPORT template <typename... T> +void print(std::ostream& os, format_string<T...> fmt, T&&... args) { + vprint(os, fmt, fmt::make_format_args(args...)); +} + +FMT_MODULE_EXPORT +template <typename... Args> +void print(std::wostream& os, + basic_format_string<wchar_t, type_identity_t<Args>...> fmt, + Args&&... args) { + vprint(os, fmt, fmt::make_format_args<buffer_context<wchar_t>>(args...)); +} + +FMT_END_NAMESPACE + +#endif // FMT_OSTREAM_H_ diff --git a/src/fmtlib/fmt/printf.h b/src/fmtlib/fmt/printf.h new file mode 100644 index 0000000..70a592d --- /dev/null +++ b/src/fmtlib/fmt/printf.h @@ -0,0 +1,640 @@ +// Formatting library for C++ - legacy printf implementation +// +// Copyright (c) 2012 - 2016, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_PRINTF_H_ +#define FMT_PRINTF_H_ + +#include <algorithm> // std::max +#include <limits> // std::numeric_limits + +#include "format.h" + +FMT_BEGIN_NAMESPACE +FMT_MODULE_EXPORT_BEGIN + +template <typename T> struct printf_formatter { printf_formatter() = delete; }; + +template <typename Char> +class basic_printf_parse_context : public basic_format_parse_context<Char> { + using basic_format_parse_context<Char>::basic_format_parse_context; +}; + +template <typename OutputIt, typename Char> class basic_printf_context { + private: + OutputIt out_; + basic_format_args<basic_printf_context> args_; + + public: + using char_type = Char; + using format_arg = basic_format_arg<basic_printf_context>; + using parse_context_type = basic_printf_parse_context<Char>; + template <typename T> using formatter_type = printf_formatter<T>; + + /** + \rst + Constructs a ``printf_context`` object. References to the arguments are + stored in the context object so make sure they have appropriate lifetimes. + \endrst + */ + basic_printf_context(OutputIt out, + basic_format_args<basic_printf_context> args) + : out_(out), args_(args) {} + + OutputIt out() { return out_; } + void advance_to(OutputIt it) { out_ = it; } + + detail::locale_ref locale() { return {}; } + + format_arg arg(int id) const { return args_.get(id); } + + FMT_CONSTEXPR void on_error(const char* message) { + detail::error_handler().on_error(message); + } +}; + +FMT_BEGIN_DETAIL_NAMESPACE + +// Checks if a value fits in int - used to avoid warnings about comparing +// signed and unsigned integers. +template <bool IsSigned> struct int_checker { + template <typename T> static bool fits_in_int(T value) { + unsigned max = max_value<int>(); + return value <= max; + } + static bool fits_in_int(bool) { return true; } +}; + +template <> struct int_checker<true> { + template <typename T> static bool fits_in_int(T value) { + return value >= (std::numeric_limits<int>::min)() && + value <= max_value<int>(); + } + static bool fits_in_int(int) { return true; } +}; + +class printf_precision_handler { + public: + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + int operator()(T value) { + if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value)) + FMT_THROW(format_error("number is too big")); + return (std::max)(static_cast<int>(value), 0); + } + + template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> + int operator()(T) { + FMT_THROW(format_error("precision is not integer")); + return 0; + } +}; + +// An argument visitor that returns true iff arg is a zero integer. +class is_zero_int { + public: + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + bool operator()(T value) { + return value == 0; + } + + template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> + bool operator()(T) { + return false; + } +}; + +template <typename T> struct make_unsigned_or_bool : std::make_unsigned<T> {}; + +template <> struct make_unsigned_or_bool<bool> { using type = bool; }; + +template <typename T, typename Context> class arg_converter { + private: + using char_type = typename Context::char_type; + + basic_format_arg<Context>& arg_; + char_type type_; + + public: + arg_converter(basic_format_arg<Context>& arg, char_type type) + : arg_(arg), type_(type) {} + + void operator()(bool value) { + if (type_ != 's') operator()<bool>(value); + } + + template <typename U, FMT_ENABLE_IF(std::is_integral<U>::value)> + void operator()(U value) { + bool is_signed = type_ == 'd' || type_ == 'i'; + using target_type = conditional_t<std::is_same<T, void>::value, U, T>; + if (const_check(sizeof(target_type) <= sizeof(int))) { + // Extra casts are used to silence warnings. + if (is_signed) { + arg_ = detail::make_arg<Context>( + static_cast<int>(static_cast<target_type>(value))); + } else { + using unsigned_type = typename make_unsigned_or_bool<target_type>::type; + arg_ = detail::make_arg<Context>( + static_cast<unsigned>(static_cast<unsigned_type>(value))); + } + } else { + if (is_signed) { + // glibc's printf doesn't sign extend arguments of smaller types: + // std::printf("%lld", -42); // prints "4294967254" + // but we don't have to do the same because it's a UB. + arg_ = detail::make_arg<Context>(static_cast<long long>(value)); + } else { + arg_ = detail::make_arg<Context>( + static_cast<typename make_unsigned_or_bool<U>::type>(value)); + } + } + } + + template <typename U, FMT_ENABLE_IF(!std::is_integral<U>::value)> + void operator()(U) {} // No conversion needed for non-integral types. +}; + +// Converts an integer argument to T for printf, if T is an integral type. +// If T is void, the argument is converted to corresponding signed or unsigned +// type depending on the type specifier: 'd' and 'i' - signed, other - +// unsigned). +template <typename T, typename Context, typename Char> +void convert_arg(basic_format_arg<Context>& arg, Char type) { + visit_format_arg(arg_converter<T, Context>(arg, type), arg); +} + +// Converts an integer argument to char for printf. +template <typename Context> class char_converter { + private: + basic_format_arg<Context>& arg_; + + public: + explicit char_converter(basic_format_arg<Context>& arg) : arg_(arg) {} + + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + void operator()(T value) { + arg_ = detail::make_arg<Context>( + static_cast<typename Context::char_type>(value)); + } + + template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> + void operator()(T) {} // No conversion needed for non-integral types. +}; + +// An argument visitor that return a pointer to a C string if argument is a +// string or null otherwise. +template <typename Char> struct get_cstring { + template <typename T> const Char* operator()(T) { return nullptr; } + const Char* operator()(const Char* s) { return s; } +}; + +// Checks if an argument is a valid printf width specifier and sets +// left alignment if it is negative. +template <typename Char> class printf_width_handler { + private: + using format_specs = basic_format_specs<Char>; + + format_specs& specs_; + + public: + explicit printf_width_handler(format_specs& specs) : specs_(specs) {} + + template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)> + unsigned operator()(T value) { + auto width = static_cast<uint32_or_64_or_128_t<T>>(value); + if (detail::is_negative(value)) { + specs_.align = align::left; + width = 0 - width; + } + unsigned int_max = max_value<int>(); + if (width > int_max) FMT_THROW(format_error("number is too big")); + return static_cast<unsigned>(width); + } + + template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)> + unsigned operator()(T) { + FMT_THROW(format_error("width is not integer")); + return 0; + } +}; + +// The ``printf`` argument formatter. +template <typename OutputIt, typename Char> +class printf_arg_formatter : public arg_formatter<Char> { + private: + using base = arg_formatter<Char>; + using context_type = basic_printf_context<OutputIt, Char>; + using format_specs = basic_format_specs<Char>; + + context_type& context_; + + OutputIt write_null_pointer(bool is_string = false) { + auto s = this->specs; + s.type = presentation_type::none; + return write_bytes(this->out, is_string ? "(null)" : "(nil)", s); + } + + public: + printf_arg_formatter(OutputIt iter, format_specs& s, context_type& ctx) + : base{iter, s, locale_ref()}, context_(ctx) {} + + OutputIt operator()(monostate value) { return base::operator()(value); } + + template <typename T, FMT_ENABLE_IF(detail::is_integral<T>::value)> + OutputIt operator()(T value) { + // MSVC2013 fails to compile separate overloads for bool and Char so use + // std::is_same instead. + if (std::is_same<T, Char>::value) { + format_specs fmt_specs = this->specs; + if (fmt_specs.type != presentation_type::none && + fmt_specs.type != presentation_type::chr) { + return (*this)(static_cast<int>(value)); + } + fmt_specs.sign = sign::none; + fmt_specs.alt = false; + fmt_specs.fill[0] = ' '; // Ignore '0' flag for char types. + // align::numeric needs to be overwritten here since the '0' flag is + // ignored for non-numeric types + if (fmt_specs.align == align::none || fmt_specs.align == align::numeric) + fmt_specs.align = align::right; + return write<Char>(this->out, static_cast<Char>(value), fmt_specs); + } + return base::operator()(value); + } + + template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)> + OutputIt operator()(T value) { + return base::operator()(value); + } + + /** Formats a null-terminated C string. */ + OutputIt operator()(const char* value) { + if (value) return base::operator()(value); + return write_null_pointer(this->specs.type != presentation_type::pointer); + } + + /** Formats a null-terminated wide C string. */ + OutputIt operator()(const wchar_t* value) { + if (value) return base::operator()(value); + return write_null_pointer(this->specs.type != presentation_type::pointer); + } + + OutputIt operator()(basic_string_view<Char> value) { + return base::operator()(value); + } + + /** Formats a pointer. */ + OutputIt operator()(const void* value) { + return value ? base::operator()(value) : write_null_pointer(); + } + + /** Formats an argument of a custom (user-defined) type. */ + OutputIt operator()(typename basic_format_arg<context_type>::handle handle) { + auto parse_ctx = + basic_printf_parse_context<Char>(basic_string_view<Char>()); + handle.format(parse_ctx, context_); + return this->out; + } +}; + +template <typename Char> +void parse_flags(basic_format_specs<Char>& specs, const Char*& it, + const Char* end) { + for (; it != end; ++it) { + switch (*it) { + case '-': + specs.align = align::left; + break; + case '+': + specs.sign = sign::plus; + break; + case '0': + specs.fill[0] = '0'; + break; + case ' ': + if (specs.sign != sign::plus) { + specs.sign = sign::space; + } + break; + case '#': + specs.alt = true; + break; + default: + return; + } + } +} + +template <typename Char, typename GetArg> +int parse_header(const Char*& it, const Char* end, + basic_format_specs<Char>& specs, GetArg get_arg) { + int arg_index = -1; + Char c = *it; + if (c >= '0' && c <= '9') { + // Parse an argument index (if followed by '$') or a width possibly + // preceded with '0' flag(s). + int value = parse_nonnegative_int(it, end, -1); + if (it != end && *it == '$') { // value is an argument index + ++it; + arg_index = value != -1 ? value : max_value<int>(); + } else { + if (c == '0') specs.fill[0] = '0'; + if (value != 0) { + // Nonzero value means that we parsed width and don't need to + // parse it or flags again, so return now. + if (value == -1) FMT_THROW(format_error("number is too big")); + specs.width = value; + return arg_index; + } + } + } + parse_flags(specs, it, end); + // Parse width. + if (it != end) { + if (*it >= '0' && *it <= '9') { + specs.width = parse_nonnegative_int(it, end, -1); + if (specs.width == -1) FMT_THROW(format_error("number is too big")); + } else if (*it == '*') { + ++it; + specs.width = static_cast<int>(visit_format_arg( + detail::printf_width_handler<Char>(specs), get_arg(-1))); + } + } + return arg_index; +} + +template <typename Char, typename Context> +void vprintf(buffer<Char>& buf, basic_string_view<Char> format, + basic_format_args<Context> args) { + using OutputIt = buffer_appender<Char>; + auto out = OutputIt(buf); + auto context = basic_printf_context<OutputIt, Char>(out, args); + auto parse_ctx = basic_printf_parse_context<Char>(format); + + // Returns the argument with specified index or, if arg_index is -1, the next + // argument. + auto get_arg = [&](int arg_index) { + if (arg_index < 0) + arg_index = parse_ctx.next_arg_id(); + else + parse_ctx.check_arg_id(--arg_index); + return detail::get_arg(context, arg_index); + }; + + const Char* start = parse_ctx.begin(); + const Char* end = parse_ctx.end(); + auto it = start; + while (it != end) { + if (!detail::find<false, Char>(it, end, '%', it)) { + it = end; // detail::find leaves it == nullptr if it doesn't find '%' + break; + } + Char c = *it++; + if (it != end && *it == c) { + out = detail::write( + out, basic_string_view<Char>(start, detail::to_unsigned(it - start))); + start = ++it; + continue; + } + out = detail::write(out, basic_string_view<Char>( + start, detail::to_unsigned(it - 1 - start))); + + basic_format_specs<Char> specs; + specs.align = align::right; + + // Parse argument index, flags and width. + int arg_index = parse_header(it, end, specs, get_arg); + if (arg_index == 0) parse_ctx.on_error("argument not found"); + + // Parse precision. + if (it != end && *it == '.') { + ++it; + c = it != end ? *it : 0; + if ('0' <= c && c <= '9') { + specs.precision = parse_nonnegative_int(it, end, 0); + } else if (c == '*') { + ++it; + specs.precision = static_cast<int>( + visit_format_arg(detail::printf_precision_handler(), get_arg(-1))); + } else { + specs.precision = 0; + } + } + + auto arg = get_arg(arg_index); + // For d, i, o, u, x, and X conversion specifiers, if a precision is + // specified, the '0' flag is ignored + if (specs.precision >= 0 && arg.is_integral()) + specs.fill[0] = + ' '; // Ignore '0' flag for non-numeric types or if '-' present. + if (specs.precision >= 0 && arg.type() == detail::type::cstring_type) { + auto str = visit_format_arg(detail::get_cstring<Char>(), arg); + auto str_end = str + specs.precision; + auto nul = std::find(str, str_end, Char()); + arg = detail::make_arg<basic_printf_context<OutputIt, Char>>( + basic_string_view<Char>( + str, detail::to_unsigned(nul != str_end ? nul - str + : specs.precision))); + } + if (specs.alt && visit_format_arg(detail::is_zero_int(), arg)) + specs.alt = false; + if (specs.fill[0] == '0') { + if (arg.is_arithmetic() && specs.align != align::left) + specs.align = align::numeric; + else + specs.fill[0] = ' '; // Ignore '0' flag for non-numeric types or if '-' + // flag is also present. + } + + // Parse length and convert the argument to the required type. + c = it != end ? *it++ : 0; + Char t = it != end ? *it : 0; + using detail::convert_arg; + switch (c) { + case 'h': + if (t == 'h') { + ++it; + t = it != end ? *it : 0; + convert_arg<signed char>(arg, t); + } else { + convert_arg<short>(arg, t); + } + break; + case 'l': + if (t == 'l') { + ++it; + t = it != end ? *it : 0; + convert_arg<long long>(arg, t); + } else { + convert_arg<long>(arg, t); + } + break; + case 'j': + convert_arg<intmax_t>(arg, t); + break; + case 'z': + convert_arg<size_t>(arg, t); + break; + case 't': + convert_arg<std::ptrdiff_t>(arg, t); + break; + case 'L': + // printf produces garbage when 'L' is omitted for long double, no + // need to do the same. + break; + default: + --it; + convert_arg<void>(arg, c); + } + + // Parse type. + if (it == end) FMT_THROW(format_error("invalid format string")); + char type = static_cast<char>(*it++); + if (arg.is_integral()) { + // Normalize type. + switch (type) { + case 'i': + case 'u': + type = 'd'; + break; + case 'c': + visit_format_arg( + detail::char_converter<basic_printf_context<OutputIt, Char>>(arg), + arg); + break; + } + } + specs.type = parse_presentation_type(type); + if (specs.type == presentation_type::none) + parse_ctx.on_error("invalid type specifier"); + + start = it; + + // Format argument. + out = visit_format_arg( + detail::printf_arg_formatter<OutputIt, Char>(out, specs, context), arg); + } + detail::write(out, basic_string_view<Char>(start, to_unsigned(it - start))); +} +FMT_END_DETAIL_NAMESPACE + +template <typename Char> +using basic_printf_context_t = + basic_printf_context<detail::buffer_appender<Char>, Char>; + +using printf_context = basic_printf_context_t<char>; +using wprintf_context = basic_printf_context_t<wchar_t>; + +using printf_args = basic_format_args<printf_context>; +using wprintf_args = basic_format_args<wprintf_context>; + +/** + \rst + Constructs an `~fmt::format_arg_store` object that contains references to + arguments and can be implicitly converted to `~fmt::printf_args`. + \endrst + */ +template <typename... T> +inline auto make_printf_args(const T&... args) + -> format_arg_store<printf_context, T...> { + return {args...}; +} + +/** + \rst + Constructs an `~fmt::format_arg_store` object that contains references to + arguments and can be implicitly converted to `~fmt::wprintf_args`. + \endrst + */ +template <typename... T> +inline auto make_wprintf_args(const T&... args) + -> format_arg_store<wprintf_context, T...> { + return {args...}; +} + +template <typename S, typename Char = char_t<S>> +inline auto vsprintf( + const S& fmt, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) + -> std::basic_string<Char> { + basic_memory_buffer<Char> buffer; + vprintf(buffer, detail::to_string_view(fmt), args); + return to_string(buffer); +} + +/** + \rst + Formats arguments and returns the result as a string. + + **Example**:: + + std::string message = fmt::sprintf("The answer is %d", 42); + \endrst +*/ +template <typename S, typename... T, + typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>> +inline auto sprintf(const S& fmt, const T&... args) -> std::basic_string<Char> { + using context = basic_printf_context_t<Char>; + return vsprintf(detail::to_string_view(fmt), + fmt::make_format_args<context>(args...)); +} + +template <typename S, typename Char = char_t<S>> +inline auto vfprintf( + std::FILE* f, const S& fmt, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) + -> int { + basic_memory_buffer<Char> buffer; + vprintf(buffer, detail::to_string_view(fmt), args); + size_t size = buffer.size(); + return std::fwrite(buffer.data(), sizeof(Char), size, f) < size + ? -1 + : static_cast<int>(size); +} + +/** + \rst + Prints formatted data to the file *f*. + + **Example**:: + + fmt::fprintf(stderr, "Don't %s!", "panic"); + \endrst + */ +template <typename S, typename... T, typename Char = char_t<S>> +inline auto fprintf(std::FILE* f, const S& fmt, const T&... args) -> int { + using context = basic_printf_context_t<Char>; + return vfprintf(f, detail::to_string_view(fmt), + fmt::make_format_args<context>(args...)); +} + +template <typename S, typename Char = char_t<S>> +inline auto vprintf( + const S& fmt, + basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) + -> int { + return vfprintf(stdout, detail::to_string_view(fmt), args); +} + +/** + \rst + Prints formatted data to ``stdout``. + + **Example**:: + + fmt::printf("Elapsed time: %.2f seconds", 1.23); + \endrst + */ +template <typename S, typename... T, FMT_ENABLE_IF(detail::is_string<S>::value)> +inline auto printf(const S& fmt, const T&... args) -> int { + return vprintf( + detail::to_string_view(fmt), + fmt::make_format_args<basic_printf_context_t<char_t<S>>>(args...)); +} + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_PRINTF_H_ diff --git a/src/fmtlib/fmt/ranges.h b/src/fmtlib/fmt/ranges.h new file mode 100644 index 0000000..10429fc --- /dev/null +++ b/src/fmtlib/fmt/ranges.h @@ -0,0 +1,631 @@ +// Formatting library for C++ - experimental range support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. +// +// Copyright (c) 2018 - present, Remotion (Igor Schulz) +// All Rights Reserved +// {fmt} support for ranges, containers and types tuple interface. + +#ifndef FMT_RANGES_H_ +#define FMT_RANGES_H_ + +#include <initializer_list> +#include <tuple> +#include <type_traits> + +#include "format.h" + +FMT_BEGIN_NAMESPACE + +namespace detail { + +template <typename RangeT, typename OutputIterator> +OutputIterator copy(const RangeT& range, OutputIterator out) { + for (auto it = range.begin(), end = range.end(); it != end; ++it) + *out++ = *it; + return out; +} + +template <typename OutputIterator> +OutputIterator copy(const char* str, OutputIterator out) { + while (*str) *out++ = *str++; + return out; +} + +template <typename OutputIterator> +OutputIterator copy(char ch, OutputIterator out) { + *out++ = ch; + return out; +} + +template <typename OutputIterator> +OutputIterator copy(wchar_t ch, OutputIterator out) { + *out++ = ch; + return out; +} + +// Returns true if T has a std::string-like interface, like std::string_view. +template <typename T> class is_std_string_like { + template <typename U> + static auto check(U* p) + -> decltype((void)p->find('a'), p->length(), (void)p->data(), int()); + template <typename> static void check(...); + + public: + static constexpr const bool value = + is_string<T>::value || + std::is_convertible<T, std_string_view<char>>::value || + !std::is_void<decltype(check<T>(nullptr))>::value; +}; + +template <typename Char> +struct is_std_string_like<fmt::basic_string_view<Char>> : std::true_type {}; + +template <typename T> class is_map { + template <typename U> static auto check(U*) -> typename U::mapped_type; + template <typename> static void check(...); + + public: +#ifdef FMT_FORMAT_MAP_AS_LIST + static constexpr const bool value = false; +#else + static constexpr const bool value = + !std::is_void<decltype(check<T>(nullptr))>::value; +#endif +}; + +template <typename T> class is_set { + template <typename U> static auto check(U*) -> typename U::key_type; + template <typename> static void check(...); + + public: +#ifdef FMT_FORMAT_SET_AS_LIST + static constexpr const bool value = false; +#else + static constexpr const bool value = + !std::is_void<decltype(check<T>(nullptr))>::value && !is_map<T>::value; +#endif +}; + +template <typename... Ts> struct conditional_helper {}; + +template <typename T, typename _ = void> struct is_range_ : std::false_type {}; + +#if !FMT_MSC_VERSION || FMT_MSC_VERSION > 1800 + +# define FMT_DECLTYPE_RETURN(val) \ + ->decltype(val) { return val; } \ + static_assert( \ + true, "") // This makes it so that a semicolon is required after the + // macro, which helps clang-format handle the formatting. + +// C array overload +template <typename T, std::size_t N> +auto range_begin(const T (&arr)[N]) -> const T* { + return arr; +} +template <typename T, std::size_t N> +auto range_end(const T (&arr)[N]) -> const T* { + return arr + N; +} + +template <typename T, typename Enable = void> +struct has_member_fn_begin_end_t : std::false_type {}; + +template <typename T> +struct has_member_fn_begin_end_t<T, void_t<decltype(std::declval<T>().begin()), + decltype(std::declval<T>().end())>> + : std::true_type {}; + +// Member function overload +template <typename T> +auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).begin()); +template <typename T> +auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).end()); + +// ADL overload. Only participates in overload resolution if member functions +// are not found. +template <typename T> +auto range_begin(T&& rng) + -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value, + decltype(begin(static_cast<T&&>(rng)))> { + return begin(static_cast<T&&>(rng)); +} +template <typename T> +auto range_end(T&& rng) -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value, + decltype(end(static_cast<T&&>(rng)))> { + return end(static_cast<T&&>(rng)); +} + +template <typename T, typename Enable = void> +struct has_const_begin_end : std::false_type {}; +template <typename T, typename Enable = void> +struct has_mutable_begin_end : std::false_type {}; + +template <typename T> +struct has_const_begin_end< + T, + void_t< + decltype(detail::range_begin(std::declval<const remove_cvref_t<T>&>())), + decltype(detail::range_end(std::declval<const remove_cvref_t<T>&>()))>> + : std::true_type {}; + +template <typename T> +struct has_mutable_begin_end< + T, void_t<decltype(detail::range_begin(std::declval<T>())), + decltype(detail::range_end(std::declval<T>())), + enable_if_t<std::is_copy_constructible<T>::value>>> + : std::true_type {}; + +template <typename T> +struct is_range_<T, void> + : std::integral_constant<bool, (has_const_begin_end<T>::value || + has_mutable_begin_end<T>::value)> {}; +# undef FMT_DECLTYPE_RETURN +#endif + +// tuple_size and tuple_element check. +template <typename T> class is_tuple_like_ { + template <typename U> + static auto check(U* p) -> decltype(std::tuple_size<U>::value, int()); + template <typename> static void check(...); + + public: + static constexpr const bool value = + !std::is_void<decltype(check<T>(nullptr))>::value; +}; + +// Check for integer_sequence +#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VERSION >= 1900 +template <typename T, T... N> +using integer_sequence = std::integer_sequence<T, N...>; +template <size_t... N> using index_sequence = std::index_sequence<N...>; +template <size_t N> using make_index_sequence = std::make_index_sequence<N>; +#else +template <typename T, T... N> struct integer_sequence { + using value_type = T; + + static FMT_CONSTEXPR size_t size() { return sizeof...(N); } +}; + +template <size_t... N> using index_sequence = integer_sequence<size_t, N...>; + +template <typename T, size_t N, T... Ns> +struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {}; +template <typename T, T... Ns> +struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {}; + +template <size_t N> +using make_index_sequence = make_integer_sequence<size_t, N>; +#endif + +template <typename T> +using tuple_index_sequence = make_index_sequence<std::tuple_size<T>::value>; + +template <typename T, typename C, bool = is_tuple_like_<T>::value> +class is_tuple_formattable_ { + public: + static constexpr const bool value = false; +}; +template <typename T, typename C> class is_tuple_formattable_<T, C, true> { + template <std::size_t... I> + static std::true_type check2(index_sequence<I...>, + integer_sequence<bool, (I == I)...>); + static std::false_type check2(...); + template <std::size_t... I> + static decltype(check2( + index_sequence<I...>{}, + integer_sequence< + bool, (is_formattable<typename std::tuple_element<I, T>::type, + C>::value)...>{})) check(index_sequence<I...>); + + public: + static constexpr const bool value = + decltype(check(tuple_index_sequence<T>{}))::value; +}; + +template <class Tuple, class F, size_t... Is> +void for_each(index_sequence<Is...>, Tuple&& tup, F&& f) noexcept { + using std::get; + // using free function get<I>(T) now. + const int _[] = {0, ((void)f(get<Is>(tup)), 0)...}; + (void)_; // blocks warnings +} + +template <class T> +FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value> get_indexes( + T const&) { + return {}; +} + +template <class Tuple, class F> void for_each(Tuple&& tup, F&& f) { + const auto indexes = get_indexes(tup); + for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f)); +} + +#if FMT_MSC_VERSION && FMT_MSC_VERSION < 1920 +// Older MSVC doesn't get the reference type correctly for arrays. +template <typename R> struct range_reference_type_impl { + using type = decltype(*detail::range_begin(std::declval<R&>())); +}; + +template <typename T, std::size_t N> struct range_reference_type_impl<T[N]> { + using type = T&; +}; + +template <typename T> +using range_reference_type = typename range_reference_type_impl<T>::type; +#else +template <typename Range> +using range_reference_type = + decltype(*detail::range_begin(std::declval<Range&>())); +#endif + +// We don't use the Range's value_type for anything, but we do need the Range's +// reference type, with cv-ref stripped. +template <typename Range> +using uncvref_type = remove_cvref_t<range_reference_type<Range>>; + +template <typename Range> +using uncvref_first_type = remove_cvref_t< + decltype(std::declval<range_reference_type<Range>>().first)>; + +template <typename Range> +using uncvref_second_type = remove_cvref_t< + decltype(std::declval<range_reference_type<Range>>().second)>; + +template <typename OutputIt> OutputIt write_delimiter(OutputIt out) { + *out++ = ','; + *out++ = ' '; + return out; +} + +template <typename Char, typename OutputIt> +auto write_range_entry(OutputIt out, basic_string_view<Char> str) -> OutputIt { + return write_escaped_string(out, str); +} + +template <typename Char, typename OutputIt, typename T, + FMT_ENABLE_IF(std::is_convertible<T, std_string_view<char>>::value)> +inline auto write_range_entry(OutputIt out, const T& str) -> OutputIt { + auto sv = std_string_view<Char>(str); + return write_range_entry<Char>(out, basic_string_view<Char>(sv)); +} + +template <typename Char, typename OutputIt, typename Arg, + FMT_ENABLE_IF(std::is_same<Arg, Char>::value)> +OutputIt write_range_entry(OutputIt out, const Arg v) { + return write_escaped_char(out, v); +} + +template < + typename Char, typename OutputIt, typename Arg, + FMT_ENABLE_IF(!is_std_string_like<typename std::decay<Arg>::type>::value && + !std::is_same<Arg, Char>::value)> +OutputIt write_range_entry(OutputIt out, const Arg& v) { + return write<Char>(out, v); +} + +} // namespace detail + +template <typename T> struct is_tuple_like { + static constexpr const bool value = + detail::is_tuple_like_<T>::value && !detail::is_range_<T>::value; +}; + +template <typename T, typename C> struct is_tuple_formattable { + static constexpr const bool value = + detail::is_tuple_formattable_<T, C>::value; +}; + +template <typename TupleT, typename Char> +struct formatter<TupleT, Char, + enable_if_t<fmt::is_tuple_like<TupleT>::value && + fmt::is_tuple_formattable<TupleT, Char>::value>> { + private: + // C++11 generic lambda for format(). + template <typename FormatContext> struct format_each { + template <typename T> void operator()(const T& v) { + if (i > 0) out = detail::write_delimiter(out); + out = detail::write_range_entry<Char>(out, v); + ++i; + } + int i; + typename FormatContext::iterator& out; + }; + + public: + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename FormatContext = format_context> + auto format(const TupleT& values, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + *out++ = '('; + detail::for_each(values, format_each<FormatContext>{0, out}); + *out++ = ')'; + return out; + } +}; + +template <typename T, typename Char> struct is_range { + static constexpr const bool value = + detail::is_range_<T>::value && !detail::is_std_string_like<T>::value && + !detail::is_map<T>::value && + !std::is_convertible<T, std::basic_string<Char>>::value && + !std::is_constructible<detail::std_string_view<Char>, T>::value; +}; + +namespace detail { +template <typename Context> struct range_mapper { + using mapper = arg_mapper<Context>; + + template <typename T, + FMT_ENABLE_IF(has_formatter<remove_cvref_t<T>, Context>::value)> + static auto map(T&& value) -> T&& { + return static_cast<T&&>(value); + } + template <typename T, + FMT_ENABLE_IF(!has_formatter<remove_cvref_t<T>, Context>::value)> + static auto map(T&& value) + -> decltype(mapper().map(static_cast<T&&>(value))) { + return mapper().map(static_cast<T&&>(value)); + } +}; + +template <typename Char, typename Element> +using range_formatter_type = conditional_t< + is_formattable<Element, Char>::value, + formatter<remove_cvref_t<decltype(range_mapper<buffer_context<Char>>{}.map( + std::declval<Element>()))>, + Char>, + fallback_formatter<Element, Char>>; + +template <typename R> +using maybe_const_range = + conditional_t<has_const_begin_end<R>::value, const R, R>; +} // namespace detail + +template <typename R, typename Char> +struct formatter< + R, Char, + enable_if_t< + conjunction<fmt::is_range<R, Char> +// Workaround a bug in MSVC 2017 and earlier. +#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1920 + , + disjunction< + is_formattable<detail::uncvref_type<detail::maybe_const_range<R>>, + Char>, + detail::has_fallback_formatter< + detail::uncvref_type<detail::maybe_const_range<R>>, Char> + > +#endif + >::value + >> { + + using range_type = detail::maybe_const_range<R>; + using formatter_type = + detail::range_formatter_type<Char, detail::uncvref_type<range_type>>; + formatter_type underlying_; + bool custom_specs_ = false; + + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + auto it = ctx.begin(); + auto end = ctx.end(); + if (it == end || *it == '}') return it; + + if (*it != ':') + FMT_THROW(format_error("no top-level range formatters supported")); + + custom_specs_ = true; + ++it; + ctx.advance_to(it); + return underlying_.parse(ctx); + } + + template <typename FormatContext> + auto format(range_type& range, FormatContext& ctx) const + -> decltype(ctx.out()) { + Char prefix = detail::is_set<R>::value ? '{' : '['; + Char postfix = detail::is_set<R>::value ? '}' : ']'; + detail::range_mapper<buffer_context<Char>> mapper; + auto out = ctx.out(); + *out++ = prefix; + int i = 0; + auto it = detail::range_begin(range); + auto end = detail::range_end(range); + for (; it != end; ++it) { + if (i > 0) out = detail::write_delimiter(out); + if (custom_specs_) { + ctx.advance_to(out); + out = underlying_.format(mapper.map(*it), ctx); + } else { + out = detail::write_range_entry<Char>(out, *it); + } + ++i; + } + *out++ = postfix; + return out; + } +}; + +template <typename T, typename Char> +struct formatter< + T, Char, + enable_if_t<conjunction<detail::is_map<T> +// Workaround a bug in MSVC 2017 and earlier. +#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1920 + , + disjunction< + is_formattable<detail::uncvref_first_type<T>, Char>, + detail::has_fallback_formatter<detail::uncvref_first_type<T>, Char> + >, + disjunction< + is_formattable<detail::uncvref_second_type<T>, Char>, + detail::has_fallback_formatter<detail::uncvref_second_type<T>, Char> + > +#endif + >::value + >> { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template < + typename FormatContext, typename U, + FMT_ENABLE_IF( + std::is_same<U, conditional_t<detail::has_const_begin_end<T>::value, + const T, T>>::value)> + auto format(U& map, FormatContext& ctx) const -> decltype(ctx.out()) { + auto out = ctx.out(); + *out++ = '{'; + int i = 0; + for (const auto& item : map) { + if (i > 0) out = detail::write_delimiter(out); + out = detail::write_range_entry<Char>(out, item.first); + *out++ = ':'; + *out++ = ' '; + out = detail::write_range_entry<Char>(out, item.second); + ++i; + } + *out++ = '}'; + return out; + } +}; + +template <typename Char, typename... T> struct tuple_join_view : detail::view { + const std::tuple<T...>& tuple; + basic_string_view<Char> sep; + + tuple_join_view(const std::tuple<T...>& t, basic_string_view<Char> s) + : tuple(t), sep{s} {} +}; + +template <typename Char, typename... T> +using tuple_arg_join = tuple_join_view<Char, T...>; + +// Define FMT_TUPLE_JOIN_SPECIFIERS to enable experimental format specifiers +// support in tuple_join. It is disabled by default because of issues with +// the dynamic width and precision. +#ifndef FMT_TUPLE_JOIN_SPECIFIERS +# define FMT_TUPLE_JOIN_SPECIFIERS 0 +#endif + +template <typename Char, typename... T> +struct formatter<tuple_join_view<Char, T...>, Char> { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return do_parse(ctx, std::integral_constant<size_t, sizeof...(T)>()); + } + + template <typename FormatContext> + auto format(const tuple_join_view<Char, T...>& value, + FormatContext& ctx) const -> typename FormatContext::iterator { + return do_format(value, ctx, + std::integral_constant<size_t, sizeof...(T)>()); + } + + private: + std::tuple<formatter<typename std::decay<T>::type, Char>...> formatters_; + + template <typename ParseContext> + FMT_CONSTEXPR auto do_parse(ParseContext& ctx, + std::integral_constant<size_t, 0>) + -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename ParseContext, size_t N> + FMT_CONSTEXPR auto do_parse(ParseContext& ctx, + std::integral_constant<size_t, N>) + -> decltype(ctx.begin()) { + auto end = ctx.begin(); +#if FMT_TUPLE_JOIN_SPECIFIERS + end = std::get<sizeof...(T) - N>(formatters_).parse(ctx); + if (N > 1) { + auto end1 = do_parse(ctx, std::integral_constant<size_t, N - 1>()); + if (end != end1) + FMT_THROW(format_error("incompatible format specs for tuple elements")); + } +#endif + return end; + } + + template <typename FormatContext> + auto do_format(const tuple_join_view<Char, T...>&, FormatContext& ctx, + std::integral_constant<size_t, 0>) const -> + typename FormatContext::iterator { + return ctx.out(); + } + + template <typename FormatContext, size_t N> + auto do_format(const tuple_join_view<Char, T...>& value, FormatContext& ctx, + std::integral_constant<size_t, N>) const -> + typename FormatContext::iterator { + auto out = std::get<sizeof...(T) - N>(formatters_) + .format(std::get<sizeof...(T) - N>(value.tuple), ctx); + if (N > 1) { + out = std::copy(value.sep.begin(), value.sep.end(), out); + ctx.advance_to(out); + return do_format(value, ctx, std::integral_constant<size_t, N - 1>()); + } + return out; + } +}; + +FMT_MODULE_EXPORT_BEGIN + +/** + \rst + Returns an object that formats `tuple` with elements separated by `sep`. + + **Example**:: + + std::tuple<int, char> t = {1, 'a'}; + fmt::print("{}", fmt::join(t, ", ")); + // Output: "1, a" + \endrst + */ +template <typename... T> +FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple, string_view sep) + -> tuple_join_view<char, T...> { + return {tuple, sep}; +} + +template <typename... T> +FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple, + basic_string_view<wchar_t> sep) + -> tuple_join_view<wchar_t, T...> { + return {tuple, sep}; +} + +/** + \rst + Returns an object that formats `initializer_list` with elements separated by + `sep`. + + **Example**:: + + fmt::print("{}", fmt::join({1, 2, 3}, ", ")); + // Output: "1, 2, 3" + \endrst + */ +template <typename T> +auto join(std::initializer_list<T> list, string_view sep) + -> join_view<const T*, const T*> { + return join(std::begin(list), std::end(list), sep); +} + +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_RANGES_H_ diff --git a/src/fmtlib/fmt/std.h b/src/fmtlib/fmt/std.h new file mode 100644 index 0000000..227f484 --- /dev/null +++ b/src/fmtlib/fmt/std.h @@ -0,0 +1,176 @@ +// Formatting library for C++ - formatters for standard library types +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_STD_H_ +#define FMT_STD_H_ + +#include <thread> +#include <type_traits> +#include <utility> + +#include "ostream.h" + +#if FMT_HAS_INCLUDE(<version>) +# include <version> +#endif +// Checking FMT_CPLUSPLUS for warning suppression in MSVC. +#if FMT_CPLUSPLUS >= 201703L +# if FMT_HAS_INCLUDE(<filesystem>) +# include <filesystem> +# endif +# if FMT_HAS_INCLUDE(<variant>) +# include <variant> +# endif +#endif + +#ifdef __cpp_lib_filesystem +FMT_BEGIN_NAMESPACE + +namespace detail { + +template <typename Char> +void write_escaped_path(basic_memory_buffer<Char>& quoted, + const std::filesystem::path& p) { + write_escaped_string<Char>(std::back_inserter(quoted), p.string<Char>()); +} +# ifdef _WIN32 +template <> +inline void write_escaped_path<char>(basic_memory_buffer<char>& quoted, + const std::filesystem::path& p) { + auto s = p.u8string(); + write_escaped_string<char>( + std::back_inserter(quoted), + string_view(reinterpret_cast<const char*>(s.c_str()), s.size())); +} +# endif +template <> +inline void write_escaped_path<std::filesystem::path::value_type>( + basic_memory_buffer<std::filesystem::path::value_type>& quoted, + const std::filesystem::path& p) { + write_escaped_string<std::filesystem::path::value_type>( + std::back_inserter(quoted), p.native()); +} + +} // namespace detail + +#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1920 +// For MSVC 2017 and earlier using the partial specialization +// would cause an ambiguity error, therefore we provide it only +// conditionally. +template <typename Char> +struct formatter<std::filesystem::path, Char> + : formatter<basic_string_view<Char>> { + template <typename FormatContext> + auto format(const std::filesystem::path& p, FormatContext& ctx) const -> + typename FormatContext::iterator { + basic_memory_buffer<Char> quoted; + detail::write_escaped_path(quoted, p); + return formatter<basic_string_view<Char>>::format( + basic_string_view<Char>(quoted.data(), quoted.size()), ctx); + } +}; +#endif +FMT_END_NAMESPACE +#endif + +FMT_BEGIN_NAMESPACE +template <typename Char> +struct formatter<std::thread::id, Char> : basic_ostream_formatter<Char> {}; +FMT_END_NAMESPACE + +#ifdef __cpp_lib_variant +FMT_BEGIN_NAMESPACE +template <typename Char> struct formatter<std::monostate, Char> { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename FormatContext> + auto format(const std::monostate&, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + out = detail::write<Char>(out, "monostate"); + return out; + } +}; + +namespace detail { + +template <typename T> +using variant_index_sequence = + std::make_index_sequence<std::variant_size<T>::value>; + +// variant_size and variant_alternative check. +template <typename T, typename U = void> +struct is_variant_like_ : std::false_type {}; +template <typename T> +struct is_variant_like_<T, std::void_t<decltype(std::variant_size<T>::value)>> + : std::true_type {}; + +// formattable element check +template <typename T, typename C> class is_variant_formattable_ { + template <std::size_t... I> + static std::conjunction< + is_formattable<std::variant_alternative_t<I, T>, C>...> + check(std::index_sequence<I...>); + + public: + static constexpr const bool value = + decltype(check(variant_index_sequence<T>{}))::value; +}; + +template <typename Char, typename OutputIt, typename T> +auto write_variant_alternative(OutputIt out, const T& v) -> OutputIt { + if constexpr (is_string<T>::value) + return write_escaped_string<Char>(out, detail::to_string_view(v)); + else if constexpr (std::is_same_v<T, Char>) + return write_escaped_char(out, v); + else + return write<Char>(out, v); +} + +} // namespace detail + +template <typename T> struct is_variant_like { + static constexpr const bool value = detail::is_variant_like_<T>::value; +}; + +template <typename T, typename C> struct is_variant_formattable { + static constexpr const bool value = + detail::is_variant_formattable_<T, C>::value; +}; + +template <typename Variant, typename Char> +struct formatter< + Variant, Char, + std::enable_if_t<std::conjunction_v< + is_variant_like<Variant>, is_variant_formattable<Variant, Char>>>> { + template <typename ParseContext> + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return ctx.begin(); + } + + template <typename FormatContext> + auto format(const Variant& value, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto out = ctx.out(); + + out = detail::write<Char>(out, "variant("); + std::visit( + [&](const auto& v) { + out = detail::write_variant_alternative<Char>(out, v); + }, + value); + *out++ = ')'; + return out; + } +}; +FMT_END_NAMESPACE +#endif + +#endif // FMT_STD_H_ diff --git a/src/fmtlib/fmt/xchar.h b/src/fmtlib/fmt/xchar.h new file mode 100644 index 0000000..2865b76 --- /dev/null +++ b/src/fmtlib/fmt/xchar.h @@ -0,0 +1,232 @@ +// Formatting library for C++ - optional wchar_t and exotic character support +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_XCHAR_H_ +#define FMT_XCHAR_H_ + +#include <cwchar> +#include <tuple> + +#include "format.h" + +FMT_BEGIN_NAMESPACE +namespace detail { +template <typename T> +using is_exotic_char = bool_constant<!std::is_same<T, char>::value>; +} + +FMT_MODULE_EXPORT_BEGIN + +using wstring_view = basic_string_view<wchar_t>; +using wformat_parse_context = basic_format_parse_context<wchar_t>; +using wformat_context = buffer_context<wchar_t>; +using wformat_args = basic_format_args<wformat_context>; +using wmemory_buffer = basic_memory_buffer<wchar_t>; + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +// Workaround broken conversion on older gcc. +template <typename... Args> using wformat_string = wstring_view; +#else +template <typename... Args> +using wformat_string = basic_format_string<wchar_t, type_identity_t<Args>...>; +#endif + +template <> struct is_char<wchar_t> : std::true_type {}; +template <> struct is_char<detail::char8_type> : std::true_type {}; +template <> struct is_char<char16_t> : std::true_type {}; +template <> struct is_char<char32_t> : std::true_type {}; + +template <typename... Args> +constexpr format_arg_store<wformat_context, Args...> make_wformat_args( + const Args&... args) { + return {args...}; +} + +inline namespace literals { +#if FMT_USE_USER_DEFINED_LITERALS && !FMT_USE_NONTYPE_TEMPLATE_ARGS +constexpr detail::udl_arg<wchar_t> operator"" _a(const wchar_t* s, size_t) { + return {s}; +} +#endif +} // namespace literals + +template <typename It, typename Sentinel> +auto join(It begin, Sentinel end, wstring_view sep) + -> join_view<It, Sentinel, wchar_t> { + return {begin, end, sep}; +} + +template <typename Range> +auto join(Range&& range, wstring_view sep) + -> join_view<detail::iterator_t<Range>, detail::sentinel_t<Range>, + wchar_t> { + return join(std::begin(range), std::end(range), sep); +} + +template <typename T> +auto join(std::initializer_list<T> list, wstring_view sep) + -> join_view<const T*, const T*, wchar_t> { + return join(std::begin(list), std::end(list), sep); +} + +template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +auto vformat(basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) + -> std::basic_string<Char> { + basic_memory_buffer<Char> buffer; + detail::vformat_to(buffer, format_str, args); + return to_string(buffer); +} + +#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 409 +template <typename... Args> +using wformat_string = basic_format_string<wchar_t, type_identity_t<Args>...>; +#endif + +template <typename... T> +auto format(wformat_string<T...> fmt, T&&... args) -> std::wstring { + return vformat(fmt, fmt::make_wformat_args(args...)); +} + +// Pass char_t as a default template parameter instead of using +// std::basic_string<char_t<S>> to reduce the symbol size. +template <typename S, typename... Args, typename Char = char_t<S>, + FMT_ENABLE_IF(!std::is_same<Char, char>::value)> +auto format(const S& format_str, Args&&... args) -> std::basic_string<Char> { + return vformat(detail::to_string_view(format_str), + fmt::make_format_args<buffer_context<Char>>(args...)); +} + +template <typename Locale, typename S, typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_locale<Locale>::value&& + detail::is_exotic_char<Char>::value)> +inline auto vformat( + const Locale& loc, const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) + -> std::basic_string<Char> { + return detail::vformat(loc, detail::to_string_view(format_str), args); +} + +template <typename Locale, typename S, typename... Args, + typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_locale<Locale>::value&& + detail::is_exotic_char<Char>::value)> +inline auto format(const Locale& loc, const S& format_str, Args&&... args) + -> std::basic_string<Char> { + return detail::vformat(loc, detail::to_string_view(format_str), + fmt::make_format_args<buffer_context<Char>>(args...)); +} + +template <typename OutputIt, typename S, typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&& + detail::is_exotic_char<Char>::value)> +auto vformat_to(OutputIt out, const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) + -> OutputIt { + auto&& buf = detail::get_buffer<Char>(out); + detail::vformat_to(buf, detail::to_string_view(format_str), args); + return detail::get_iterator(buf); +} + +template <typename OutputIt, typename S, typename... Args, + typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&& + detail::is_exotic_char<Char>::value)> +inline auto format_to(OutputIt out, const S& fmt, Args&&... args) -> OutputIt { + return vformat_to(out, detail::to_string_view(fmt), + fmt::make_format_args<buffer_context<Char>>(args...)); +} + +template <typename Locale, typename S, typename OutputIt, typename... Args, + typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&& + detail::is_locale<Locale>::value&& + detail::is_exotic_char<Char>::value)> +inline auto vformat_to( + OutputIt out, const Locale& loc, const S& format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) -> OutputIt { + auto&& buf = detail::get_buffer<Char>(out); + vformat_to(buf, detail::to_string_view(format_str), args, + detail::locale_ref(loc)); + return detail::get_iterator(buf); +} + +template < + typename OutputIt, typename Locale, typename S, typename... Args, + typename Char = char_t<S>, + bool enable = detail::is_output_iterator<OutputIt, Char>::value&& + detail::is_locale<Locale>::value&& detail::is_exotic_char<Char>::value> +inline auto format_to(OutputIt out, const Locale& loc, const S& format_str, + Args&&... args) -> + typename std::enable_if<enable, OutputIt>::type { + return vformat_to(out, loc, to_string_view(format_str), + fmt::make_format_args<buffer_context<Char>>(args...)); +} + +template <typename OutputIt, typename Char, typename... Args, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&& + detail::is_exotic_char<Char>::value)> +inline auto vformat_to_n( + OutputIt out, size_t n, basic_string_view<Char> format_str, + basic_format_args<buffer_context<type_identity_t<Char>>> args) + -> format_to_n_result<OutputIt> { + detail::iterator_buffer<OutputIt, Char, detail::fixed_buffer_traits> buf(out, + n); + detail::vformat_to(buf, format_str, args); + return {buf.out(), buf.count()}; +} + +template <typename OutputIt, typename S, typename... Args, + typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&& + detail::is_exotic_char<Char>::value)> +inline auto format_to_n(OutputIt out, size_t n, const S& fmt, + const Args&... args) -> format_to_n_result<OutputIt> { + return vformat_to_n(out, n, detail::to_string_view(fmt), + fmt::make_format_args<buffer_context<Char>>(args...)); +} + +template <typename S, typename... Args, typename Char = char_t<S>, + FMT_ENABLE_IF(detail::is_exotic_char<Char>::value)> +inline auto formatted_size(const S& fmt, Args&&... args) -> size_t { + detail::counting_buffer<Char> buf; + detail::vformat_to(buf, detail::to_string_view(fmt), + fmt::make_format_args<buffer_context<Char>>(args...)); + return buf.count(); +} + +inline void vprint(std::FILE* f, wstring_view fmt, wformat_args args) { + wmemory_buffer buffer; + detail::vformat_to(buffer, fmt, args); + buffer.push_back(L'\0'); + if (std::fputws(buffer.data(), f) == -1) + FMT_THROW(system_error(errno, FMT_STRING("cannot write to file"))); +} + +inline void vprint(wstring_view fmt, wformat_args args) { + vprint(stdout, fmt, args); +} + +template <typename... T> +void print(std::FILE* f, wformat_string<T...> fmt, T&&... args) { + return vprint(f, wstring_view(fmt), fmt::make_wformat_args(args...)); +} + +template <typename... T> void print(wformat_string<T...> fmt, T&&... args) { + return vprint(wstring_view(fmt), fmt::make_wformat_args(args...)); +} + +/** + Converts *value* to ``std::wstring`` using the default format for type *T*. + */ +template <typename T> inline auto to_wstring(const T& value) -> std::wstring { + return format(FMT_STRING(L"{}"), value); +} +FMT_MODULE_EXPORT_END +FMT_END_NAMESPACE + +#endif // FMT_XCHAR_H_ |