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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /mozglue/misc/decimal/moz-decimal-utils.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | mozglue/misc/decimal/moz-decimal-utils.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/mozglue/misc/decimal/moz-decimal-utils.h b/mozglue/misc/decimal/moz-decimal-utils.h new file mode 100644 index 0000000000..05ea61e4bd --- /dev/null +++ b/mozglue/misc/decimal/moz-decimal-utils.h @@ -0,0 +1,110 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef MOZ_DECIMAL_UTILS_H +#define MOZ_DECIMAL_UTILS_H + +// This file contains extra includes, defines and typedefs to allow compilation +// of Decimal.cpp under the Mozilla source without blink core dependencies. Do +// not include it into any file other than Decimal.cpp. + +#include "double-conversion/double-conversion.h" +#include "mozilla/ArrayUtils.h" +#include "mozilla/Casting.h" +#include "mozilla/FloatingPoint.h" +#include "mozilla/Span.h" + +#include <cmath> +#include <cstring> +#include <iomanip> +#include <limits> +#include <sstream> + +#ifndef UINT64_C +// For Android toolchain +#define UINT64_C(c) (c ## ULL) +#endif + +#ifdef ASSERT +#undef ASSERT +#endif +#define ASSERT MOZ_ASSERT + +#define ASSERT_NOT_REACHED() MOZ_ASSERT_UNREACHABLE("moz-decimal-utils.h") + +#define STACK_ALLOCATED() DISALLOW_NEW() + +#define WTF_MAKE_NONCOPYABLE(ClassName) \ + private: \ + ClassName(const ClassName&) = delete; \ + void operator=(const ClassName&) = delete; + +typedef std::string String; + +double mozToDouble(mozilla::Span<const char> aStr, bool *valid) { + double_conversion::StringToDoubleConverter converter( + double_conversion::StringToDoubleConverter::NO_FLAGS, + mozilla::UnspecifiedNaN<double>(), mozilla::UnspecifiedNaN<double>(), nullptr, nullptr); + const char* str = aStr.Elements(); + int length = mozilla::AssertedCast<int>(aStr.Length()); + int processed_char_count; // unused - NO_FLAGS requires the whole string to parse + double result = converter.StringToDouble(str, length, &processed_char_count); + *valid = std::isfinite(result); + return result; +} + +double mozToDouble(const String &aStr, bool *valid) { + return mozToDouble(mozilla::MakeStringSpan(aStr.c_str()), valid); +} + +String mozToString(double aNum) { + char buffer[64]; + int buffer_length = mozilla::ArrayLength(buffer); + const double_conversion::DoubleToStringConverter& converter = + double_conversion::DoubleToStringConverter::EcmaScriptConverter(); + double_conversion::StringBuilder builder(buffer, buffer_length); + converter.ToShortest(aNum, &builder); + return String(builder.Finalize()); +} + +String mozToString(int64_t aNum) { + std::ostringstream o; + o << std::setprecision(std::numeric_limits<int64_t>::digits10) << aNum; + return o.str(); +} + +String mozToString(uint64_t aNum) { + std::ostringstream o; + o << std::setprecision(std::numeric_limits<uint64_t>::digits10) << aNum; + return o.str(); +} + +namespace moz_decimal_utils { + +class StringBuilder +{ +public: + void append(char c) { + mStr += c; + } + void appendLiteral(const char *aStr) { + mStr += aStr; + } + void appendNumber(int aNum) { + mStr += mozToString(int64_t(aNum)); + } + void append(const String& aStr) { + mStr += aStr; + } + std::string toString() const { + return mStr; + } +private: + std::string mStr; +}; + +} // namespace moz_decimal_utils + +#endif |