diff options
Diffstat (limited to 'src/rgw/picojson/picojson.h')
| -rw-r--r-- | src/rgw/picojson/picojson.h | 1177 |
1 files changed, 1177 insertions, 0 deletions
diff --git a/src/rgw/picojson/picojson.h b/src/rgw/picojson/picojson.h new file mode 100644 index 000000000..ceaeb5ba8 --- /dev/null +++ b/src/rgw/picojson/picojson.h @@ -0,0 +1,1177 @@ +/* + * Copyright 2009-2010 Cybozu Labs, Inc. + * Copyright 2011-2014 Kazuho Oku + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef picojson_h +#define picojson_h + +#include <algorithm> +#include <cstdio> +#include <cstdlib> +#include <cstring> +#include <cstddef> +#include <iostream> +#include <iterator> +#include <limits> +#include <map> +#include <stdexcept> +#include <string> +#include <vector> +#include <utility> + +// for isnan/isinf +#if __cplusplus >= 201103L +#include <cmath> +#else +extern "C" { +#ifdef _MSC_VER +#include <float.h> +#elif defined(__INTEL_COMPILER) +#include <mathimf.h> +#else +#include <math.h> +#endif +} +#endif + +#ifndef PICOJSON_USE_RVALUE_REFERENCE +#if (defined(__cpp_rvalue_references) && __cpp_rvalue_references >= 200610) || (defined(_MSC_VER) && _MSC_VER >= 1600) +#define PICOJSON_USE_RVALUE_REFERENCE 1 +#else +#define PICOJSON_USE_RVALUE_REFERENCE 0 +#endif +#endif // PICOJSON_USE_RVALUE_REFERENCE + +#ifndef PICOJSON_NOEXCEPT +#if PICOJSON_USE_RVALUE_REFERENCE +#define PICOJSON_NOEXCEPT noexcept +#else +#define PICOJSON_NOEXCEPT throw() +#endif +#endif + +// experimental support for int64_t (see README.mkdn for detail) +#ifdef PICOJSON_USE_INT64 +//#define __STDC_FORMAT_MACROS +#include <cerrno> +#if __cplusplus >= 201103L +#include <cinttypes> +#else +extern "C" { +#include <inttypes.h> +} +#endif +#endif + +// to disable the use of localeconv(3), set PICOJSON_USE_LOCALE to 0 +#ifndef PICOJSON_USE_LOCALE +#define PICOJSON_USE_LOCALE 1 +#endif +#if PICOJSON_USE_LOCALE +extern "C" { +#include <locale.h> +} +#endif + +#ifndef PICOJSON_ASSERT +#define PICOJSON_ASSERT(e) \ + do { \ + if (!(e)) \ + throw std::runtime_error(#e); \ + } while (0) +#endif + +#ifdef _MSC_VER +#define SNPRINTF _snprintf_s +#pragma warning(push) +#pragma warning(disable : 4244) // conversion from int to char +#pragma warning(disable : 4127) // conditional expression is constant +#pragma warning(disable : 4702) // unreachable code +#else +#define SNPRINTF snprintf +#endif + +namespace picojson { + +enum { + null_type, + boolean_type, + number_type, + string_type, + array_type, + object_type +#ifdef PICOJSON_USE_INT64 + , + int64_type +#endif +}; + +enum { INDENT_WIDTH = 2 }; + +struct null {}; + +class value { +public: + typedef std::vector<value> array; + typedef std::map<std::string, value> object; + union _storage { + bool boolean_; + double number_; +#ifdef PICOJSON_USE_INT64 + int64_t int64_; +#endif + std::string *string_; + array *array_; + object *object_; + }; + +protected: + int type_; + _storage u_; + +public: + value(); + value(int type, bool); + explicit value(bool b); +#ifdef PICOJSON_USE_INT64 + explicit value(int64_t i); +#endif + explicit value(double n); + explicit value(const std::string &s); + explicit value(const array &a); + explicit value(const object &o); +#if PICOJSON_USE_RVALUE_REFERENCE + explicit value(std::string &&s); + explicit value(array &&a); + explicit value(object &&o); +#endif + explicit value(const char *s); + value(const char *s, size_t len); + ~value(); + value(const value &x); + value &operator=(const value &x); +#if PICOJSON_USE_RVALUE_REFERENCE + value(value &&x) PICOJSON_NOEXCEPT; + value &operator=(value &&x) PICOJSON_NOEXCEPT; +#endif + void swap(value &x) PICOJSON_NOEXCEPT; + template <typename T> bool is() const; + template <typename T> const T &get() const; + template <typename T> T &get(); + template <typename T> void set(const T &); +#if PICOJSON_USE_RVALUE_REFERENCE + template <typename T> void set(T &&); +#endif + bool evaluate_as_boolean() const; + const value &get(const size_t idx) const; + const value &get(const std::string &key) const; + value &get(const size_t idx); + value &get(const std::string &key); + + bool contains(const size_t idx) const; + bool contains(const std::string &key) const; + std::string to_str() const; + template <typename Iter> void serialize(Iter os, bool prettify = false) const; + std::string serialize(bool prettify = false) const; + +private: + template <typename T> value(const T *); // intentionally defined to block implicit conversion of pointer to bool + template <typename Iter> static void _indent(Iter os, int indent); + template <typename Iter> void _serialize(Iter os, int indent) const; + std::string _serialize(int indent) const; + void clear(); +}; + +typedef value::array array; +typedef value::object object; + +inline value::value() : type_(null_type), u_() { +} + +inline value::value(int type, bool) : type_(type), u_() { + switch (type) { +#define INIT(p, v) \ + case p##type: \ + u_.p = v; \ + break + INIT(boolean_, false); + INIT(number_, 0.0); +#ifdef PICOJSON_USE_INT64 + INIT(int64_, 0); +#endif + INIT(string_, new std::string()); + INIT(array_, new array()); + INIT(object_, new object()); +#undef INIT + default: + break; + } +} + +inline value::value(bool b) : type_(boolean_type), u_() { + u_.boolean_ = b; +} + +#ifdef PICOJSON_USE_INT64 +inline value::value(int64_t i) : type_(int64_type), u_() { + u_.int64_ = i; +} +#endif + +inline value::value(double n) : type_(number_type), u_() { + if ( +#ifdef _MSC_VER + !_finite(n) +#elif __cplusplus >= 201103L + std::isnan(n) || std::isinf(n) +#else + isnan(n) || isinf(n) +#endif + ) { + throw std::overflow_error(""); + } + u_.number_ = n; +} + +inline value::value(const std::string &s) : type_(string_type), u_() { + u_.string_ = new std::string(s); +} + +inline value::value(const array &a) : type_(array_type), u_() { + u_.array_ = new array(a); +} + +inline value::value(const object &o) : type_(object_type), u_() { + u_.object_ = new object(o); +} + +#if PICOJSON_USE_RVALUE_REFERENCE +inline value::value(std::string &&s) : type_(string_type), u_() { + u_.string_ = new std::string(std::move(s)); +} + +inline value::value(array &&a) : type_(array_type), u_() { + u_.array_ = new array(std::move(a)); +} + +inline value::value(object &&o) : type_(object_type), u_() { + u_.object_ = new object(std::move(o)); +} +#endif + +inline value::value(const char *s) : type_(string_type), u_() { + u_.string_ = new std::string(s); +} + +inline value::value(const char *s, size_t len) : type_(string_type), u_() { + u_.string_ = new std::string(s, len); +} + +inline void value::clear() { + switch (type_) { +#define DEINIT(p) \ + case p##type: \ + delete u_.p; \ + break + DEINIT(string_); + DEINIT(array_); + DEINIT(object_); +#undef DEINIT + default: + break; + } +} + +inline value::~value() { + clear(); +} + +inline value::value(const value &x) : type_(x.type_), u_() { + switch (type_) { +#define INIT(p, v) \ + case p##type: \ + u_.p = v; \ + break + INIT(string_, new std::string(*x.u_.string_)); + INIT(array_, new array(*x.u_.array_)); + INIT(object_, new object(*x.u_.object_)); +#undef INIT + default: + u_ = x.u_; + break; + } +} + +inline value &value::operator=(const value &x) { + if (this != &x) { + value t(x); + swap(t); + } + return *this; +} + +#if PICOJSON_USE_RVALUE_REFERENCE +inline value::value(value &&x) PICOJSON_NOEXCEPT : type_(null_type), u_() { + swap(x); +} +inline value &value::operator=(value &&x) PICOJSON_NOEXCEPT { + swap(x); + return *this; +} +#endif +inline void value::swap(value &x) PICOJSON_NOEXCEPT { + std::swap(type_, x.type_); + std::swap(u_, x.u_); +} + +#define IS(ctype, jtype) \ + template <> inline bool value::is<ctype>() const { \ + return type_ == jtype##_type; \ + } +IS(null, null) +IS(bool, boolean) +#ifdef PICOJSON_USE_INT64 +IS(int64_t, int64) +#endif +IS(std::string, string) +IS(array, array) +IS(object, object) +#undef IS +template <> inline bool value::is<double>() const { + return type_ == number_type +#ifdef PICOJSON_USE_INT64 + || type_ == int64_type +#endif + ; +} + +#define GET(ctype, var) \ + template <> inline const ctype &value::get<ctype>() const { \ + PICOJSON_ASSERT("type mismatch! call is<type>() before get<type>()" && is<ctype>()); \ + return var; \ + } \ + template <> inline ctype &value::get<ctype>() { \ + PICOJSON_ASSERT("type mismatch! call is<type>() before get<type>()" && is<ctype>()); \ + return var; \ + } +GET(bool, u_.boolean_) +GET(std::string, *u_.string_) +GET(array, *u_.array_) +GET(object, *u_.object_) +#ifdef PICOJSON_USE_INT64 +GET(double, + (type_ == int64_type && (const_cast<value *>(this)->type_ = number_type, (const_cast<value *>(this)->u_.number_ = u_.int64_)), + u_.number_)) +GET(int64_t, u_.int64_) +#else +GET(double, u_.number_) +#endif +#undef GET + +#define SET(ctype, jtype, setter) \ + template <> inline void value::set<ctype>(const ctype &_val) { \ + clear(); \ + type_ = jtype##_type; \ + setter \ + } +SET(bool, boolean, u_.boolean_ = _val;) +SET(std::string, string, u_.string_ = new std::string(_val);) +SET(array, array, u_.array_ = new array(_val);) +SET(object, object, u_.object_ = new object(_val);) +SET(double, number, u_.number_ = _val;) +#ifdef PICOJSON_USE_INT64 +SET(int64_t, int64, u_.int64_ = _val;) +#endif +#undef SET + +#if PICOJSON_USE_RVALUE_REFERENCE +#define MOVESET(ctype, jtype, setter) \ + template <> inline void value::set<ctype>(ctype && _val) { \ + clear(); \ + type_ = jtype##_type; \ + setter \ + } +MOVESET(std::string, string, u_.string_ = new std::string(std::move(_val));) +MOVESET(array, array, u_.array_ = new array(std::move(_val));) +MOVESET(object, object, u_.object_ = new object(std::move(_val));) +#undef MOVESET +#endif + +inline bool value::evaluate_as_boolean() const { + switch (type_) { + case null_type: + return false; + case boolean_type: + return u_.boolean_; + case number_type: + return u_.number_ != 0; +#ifdef PICOJSON_USE_INT64 + case int64_type: + return u_.int64_ != 0; +#endif + case string_type: + return !u_.string_->empty(); + default: + return true; + } +} + +inline const value &value::get(const size_t idx) const { + static value s_null; + PICOJSON_ASSERT(is<array>()); + return idx < u_.array_->size() ? (*u_.array_)[idx] : s_null; +} + +inline value &value::get(const size_t idx) { + static value s_null; + PICOJSON_ASSERT(is<array>()); + return idx < u_.array_->size() ? (*u_.array_)[idx] : s_null; +} + +inline const value &value::get(const std::string &key) const { + static value s_null; + PICOJSON_ASSERT(is<object>()); + object::const_iterator i = u_.object_->find(key); + return i != u_.object_->end() ? i->second : s_null; +} + +inline value &value::get(const std::string &key) { + static value s_null; + PICOJSON_ASSERT(is<object>()); + object::iterator i = u_.object_->find(key); + return i != u_.object_->end() ? i->second : s_null; +} + +inline bool value::contains(const size_t idx) const { + PICOJSON_ASSERT(is<array>()); + return idx < u_.array_->size(); +} + +inline bool value::contains(const std::string &key) const { + PICOJSON_ASSERT(is<object>()); + object::const_iterator i = u_.object_->find(key); + return i != u_.object_->end(); +} + +inline std::string value::to_str() const { + switch (type_) { + case null_type: + return "null"; + case boolean_type: + return u_.boolean_ ? "true" : "false"; +#ifdef PICOJSON_USE_INT64 + case int64_type: { + char buf[sizeof("-9223372036854775808")]; + SNPRINTF(buf, sizeof(buf), "%" PRId64, u_.int64_); + return buf; + } +#endif + case number_type: { + char buf[256]; + double tmp; + SNPRINTF(buf, sizeof(buf), fabs(u_.number_) < (1ULL << 53) && modf(u_.number_, &tmp) == 0 ? "%.f" : "%.17g", u_.number_); +#if PICOJSON_USE_LOCALE + char *decimal_point = localeconv()->decimal_point; + if (strcmp(decimal_point, ".") != 0) { + size_t decimal_point_len = strlen(decimal_point); + for (char *p = buf; *p != '\0'; ++p) { + if (strncmp(p, decimal_point, decimal_point_len) == 0) { + return std::string(buf, p) + "." + (p + decimal_point_len); + } + } + } +#endif + return buf; + } + case string_type: + return *u_.string_; + case array_type: + return "array"; + case object_type: + return "object"; + default: + PICOJSON_ASSERT(0); +#ifdef _MSC_VER + __assume(0); +#endif + } + return std::string(); +} + +template <typename Iter> void copy(const std::string &s, Iter oi) { + std::copy(s.begin(), s.end(), oi); +} + +template <typename Iter> struct serialize_str_char { + Iter oi; + void operator()(char c) { + switch (c) { +#define MAP(val, sym) \ + case val: \ + copy(sym, oi); \ + break + MAP('"', "\\\""); + MAP('\\', "\\\\"); + MAP('/', "\\/"); + MAP('\b', "\\b"); + MAP('\f', "\\f"); + MAP('\n', "\\n"); + MAP('\r', "\\r"); + MAP('\t', "\\t"); +#undef MAP + default: + if (static_cast<unsigned char>(c) < 0x20 || c == 0x7f) { + char buf[7]; + SNPRINTF(buf, sizeof(buf), "\\u%04x", c & 0xff); + copy(buf, buf + 6, oi); + } else { + *oi++ = c; + } + break; + } + } +}; + +template <typename Iter> void serialize_str(const std::string &s, Iter oi) { + *oi++ = '"'; + serialize_str_char<Iter> process_char = {oi}; + std::for_each(s.begin(), s.end(), process_char); + *oi++ = '"'; +} + +template <typename Iter> void value::serialize(Iter oi, bool prettify) const { + return _serialize(oi, prettify ? 0 : -1); +} + +inline std::string value::serialize(bool prettify) const { + return _serialize(prettify ? 0 : -1); +} + +template <typename Iter> void value::_indent(Iter oi, int indent) { + *oi++ = '\n'; + for (int i = 0; i < indent * INDENT_WIDTH; ++i) { + *oi++ = ' '; + } +} + +template <typename Iter> void value::_serialize(Iter oi, int indent) const { + switch (type_) { + case string_type: + serialize_str(*u_.string_, oi); + break; + case array_type: { + *oi++ = '['; + if (indent != -1) { + ++indent; + } + for (array::const_iterator i = u_.array_->begin(); i != u_.array_->end(); ++i) { + if (i != u_.array_->begin()) { + *oi++ = ','; + } + if (indent != -1) { + _indent(oi, indent); + } + i->_serialize(oi, indent); + } + if (indent != -1) { + --indent; + if (!u_.array_->empty()) { + _indent(oi, indent); + } + } + *oi++ = ']'; + break; + } + case object_type: { + *oi++ = '{'; + if (indent != -1) { + ++indent; + } + for (object::const_iterator i = u_.object_->begin(); i != u_.object_->end(); ++i) { + if (i != u_.object_->begin()) { + *oi++ = ','; + } + if (indent != -1) { + _indent(oi, indent); + } + serialize_str(i->first, oi); + *oi++ = ':'; + if (indent != -1) { + *oi++ = ' '; + } + i->second._serialize(oi, indent); + } + if (indent != -1) { + --indent; + if (!u_.object_->empty()) { + _indent(oi, indent); + } + } + *oi++ = '}'; + break; + } + default: + copy(to_str(), oi); + break; + } + if (indent == 0) { + *oi++ = '\n'; + } +} + +inline std::string value::_serialize(int indent) const { + std::string s; + _serialize(std::back_inserter(s), indent); + return s; +} + +template <typename Iter> class input { +protected: + Iter cur_, end_; + bool consumed_; + int line_; + +public: + input(const Iter &first, const Iter &last) : cur_(first), end_(last), consumed_(false), line_(1) { + } + int getc() { + if (consumed_) { + if (*cur_ == '\n') { + ++line_; + } + ++cur_; + } + if (cur_ == end_) { + consumed_ = false; + return -1; + } + consumed_ = true; + return *cur_ & 0xff; + } + void ungetc() { + consumed_ = false; + } + Iter cur() const { + if (consumed_) { + input<Iter> *self = const_cast<input<Iter> *>(this); + self->consumed_ = false; + ++self->cur_; + } + return cur_; + } + int line() const { + return line_; + } + void skip_ws() { + while (1) { + int ch = getc(); + if (!(ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r')) { + ungetc(); + break; + } + } + } + bool picojson_expect(const int expected) { + skip_ws(); + if (getc() != expected) { + ungetc(); + return false; + } + return true; + } + bool match(const std::string &pattern) { + for (std::string::const_iterator pi(pattern.begin()); pi != pattern.end(); ++pi) { + if (getc() != *pi) { + ungetc(); + return false; + } + } + return true; + } +}; + +template <typename Iter> inline int _parse_quadhex(input<Iter> &in) { + int uni_ch = 0, hex; + for (int i = 0; i < 4; i++) { + if ((hex = in.getc()) == -1) { + return -1; + } + if ('0' <= hex && hex <= '9') { + hex -= '0'; + } else if ('A' <= hex && hex <= 'F') { + hex -= 'A' - 0xa; + } else if ('a' <= hex && hex <= 'f') { + hex -= 'a' - 0xa; + } else { + in.ungetc(); + return -1; + } + uni_ch = uni_ch * 16 + hex; + } + return uni_ch; +} + +template <typename String, typename Iter> inline bool _parse_codepoint(String &out, input<Iter> &in) { + int uni_ch; + if ((uni_ch = _parse_quadhex(in)) == -1) { + return false; + } + if (0xd800 <= uni_ch && uni_ch <= 0xdfff) { + if (0xdc00 <= uni_ch) { + // a second 16-bit of a surrogate pair appeared + return false; + } + // first 16-bit of surrogate pair, get the next one + if (in.getc() != '\\' || in.getc() != 'u') { + in.ungetc(); + return false; + } + int second = _parse_quadhex(in); + if (!(0xdc00 <= second && second <= 0xdfff)) { + return false; + } + uni_ch = ((uni_ch - 0xd800) << 10) | ((second - 0xdc00) & 0x3ff); + uni_ch += 0x10000; + } + if (uni_ch < 0x80) { + out.push_back(static_cast<char>(uni_ch)); + } else { + if (uni_ch < 0x800) { + out.push_back(static_cast<char>(0xc0 | (uni_ch >> 6))); + } else { + if (uni_ch < 0x10000) { + out.push_back(static_cast<char>(0xe0 | (uni_ch >> 12))); + } else { + out.push_back(static_cast<char>(0xf0 | (uni_ch >> 18))); + out.push_back(static_cast<char>(0x80 | ((uni_ch >> 12) & 0x3f))); + } + out.push_back(static_cast<char>(0x80 | ((uni_ch >> 6) & 0x3f))); + } + out.push_back(static_cast<char>(0x80 | (uni_ch & 0x3f))); + } + return true; +} + +template <typename String, typename Iter> inline bool _parse_string(String &out, input<Iter> &in) { + while (1) { + int ch = in.getc(); + if (ch < ' ') { + in.ungetc(); + return false; + } else if (ch == '"') { + return true; + } else if (ch == '\\') { + if ((ch = in.getc()) == -1) { + return false; + } + switch (ch) { +#define MAP(sym, val) \ + case sym: \ + out.push_back(val); \ + break + MAP('"', '\"'); + MAP('\\', '\\'); + MAP('/', '/'); + MAP('b', '\b'); + MAP('f', '\f'); + MAP('n', '\n'); + MAP('r', '\r'); + MAP('t', '\t'); +#undef MAP + case 'u': + if (!_parse_codepoint(out, in)) { + return false; + } + break; + default: + return false; + } + } else { + out.push_back(static_cast<char>(ch)); + } + } + return false; +} + +template <typename Context, typename Iter> inline bool _parse_array(Context &ctx, input<Iter> &in) { + if (!ctx.parse_array_start()) { + return false; + } + size_t idx = 0; + if (in.picojson_expect(']')) { + return ctx.parse_array_stop(idx); + } + do { + if (!ctx.parse_array_item(in, idx)) { + return false; + } + idx++; + } while (in.picojson_expect(',')); + return in.picojson_expect(']') && ctx.parse_array_stop(idx); +} + +template <typename Context, typename Iter> inline bool _parse_object(Context &ctx, input<Iter> &in) { + if (!ctx.parse_object_start()) { + return false; + } + if (in.picojson_expect('}')) { + return true; + } + do { + std::string key; + if (!in.picojson_expect('"') || !_parse_string(key, in) || !in.picojson_expect(':')) { + return false; + } + if (!ctx.parse_object_item(in, key)) { + return false; + } + } while (in.picojson_expect(',')); + return in.picojson_expect('}'); +} + +template <typename Iter> inline std::string _parse_number(input<Iter> &in) { + std::string num_str; + while (1) { + int ch = in.getc(); + if (('0' <= ch && ch <= '9') || ch == '+' || ch == '-' || ch == 'e' || ch == 'E') { + num_str.push_back(static_cast<char>(ch)); + } else if (ch == '.') { +#if PICOJSON_USE_LOCALE + num_str += localeconv()->decimal_point; +#else + num_str.push_back('.'); +#endif + } else { + in.ungetc(); + break; + } + } + return num_str; +} + +template <typename Context, typename Iter> inline bool _parse(Context &ctx, input<Iter> &in) { + in.skip_ws(); + int ch = in.getc(); + switch (ch) { +#define IS(ch, text, op) \ + case ch: \ + if (in.match(text) && op) { \ + return true; \ + } else { \ + return false; \ + } + IS('n', "ull", ctx.set_null()); + IS('f', "alse", ctx.set_bool(false)); + IS('t', "rue", ctx.set_bool(true)); +#undef IS + case '"': + return ctx.parse_string(in); + case '[': + return _parse_array(ctx, in); + case '{': + return _parse_object(ctx, in); + default: + if (('0' <= ch && ch <= '9') || ch == '-') { + double f; + char *endp; + in.ungetc(); + std::string num_str(_parse_number(in)); + if (num_str.empty()) { + return false; + } +#ifdef PICOJSON_USE_INT64 +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wtautological-type-limit-compare" + { + errno = 0; + intmax_t ival = strtoimax(num_str.c_str(), &endp, 10); + if (errno == 0 && std::numeric_limits<int64_t>::min() <= ival && ival <= std::numeric_limits<int64_t>::max() && + endp == num_str.c_str() + num_str.size()) { + ctx.set_int64(ival); + return true; + } + } +#pragma clang diagnostic pop +#endif + f = strtod(num_str.c_str(), &endp); + if (endp == num_str.c_str() + num_str.size()) { + ctx.set_number(f); + return true; + } + return false; + } + break; + } + in.ungetc(); + return false; +} + +class deny_parse_context { +public: + bool set_null() { + return false; + } + bool set_bool(bool) { + return false; + } +#ifdef PICOJSON_USE_INT64 + bool set_int64(int64_t) { + return false; + } +#endif + bool set_number(double) { + return false; + } + template <typename Iter> bool parse_string(input<Iter> &) { + return false; + } + bool parse_array_start() { + return false; + } + template <typename Iter> bool parse_array_item(input<Iter> &, size_t) { + return false; + } + bool parse_array_stop(size_t) { + return false; + } + bool parse_object_start() { + return false; + } + template <typename Iter> bool parse_object_item(input<Iter> &, const std::string &) { + return false; + } +}; + +class default_parse_context { +protected: + value *out_; + +public: + default_parse_context(value *out) : out_(out) { + } + bool set_null() { + *out_ = value(); + return true; + } + bool set_bool(bool b) { + *out_ = value(b); + return true; + } +#ifdef PICOJSON_USE_INT64 + bool set_int64(int64_t i) { + *out_ = value(i); + return true; + } +#endif + bool set_number(double f) { + *out_ = value(f); + return true; + } + template <typename Iter> bool parse_string(input<Iter> &in) { + *out_ = value(string_type, false); + return _parse_string(out_->get<std::string>(), in); + } + bool parse_array_start() { + *out_ = value(array_type, false); + return true; + } + template <typename Iter> bool parse_array_item(input<Iter> &in, size_t) { + array &a = out_->get<array>(); + a.push_back(value()); + default_parse_context ctx(&a.back()); + return _parse(ctx, in); + } + bool parse_array_stop(size_t) { + return true; + } + bool parse_object_start() { + *out_ = value(object_type, false); + return true; + } + template <typename Iter> bool parse_object_item(input<Iter> &in, const std::string &key) { + object &o = out_->get<object>(); + default_parse_context ctx(&o[key]); + return _parse(ctx, in); + } + +private: + default_parse_context(const default_parse_context &); + default_parse_context &operator=(const default_parse_context &); +}; + +class null_parse_context { +public: + struct dummy_str { + void push_back(int) { + } + }; + +public: + null_parse_context() { + } + bool set_null() { + return true; + } + bool set_bool(bool) { + return true; + } +#ifdef PICOJSON_USE_INT64 + bool set_int64(int64_t) { + return true; + } +#endif + bool set_number(double) { + return true; + } + template <typename Iter> bool parse_string(input<Iter> &in) { + dummy_str s; + return _parse_string(s, in); + } + bool parse_array_start() { + return true; + } + template <typename Iter> bool parse_array_item(input<Iter> &in, size_t) { + return _parse(*this, in); + } + bool parse_array_stop(size_t) { + return true; + } + bool parse_object_start() { + return true; + } + template <typename Iter> bool parse_object_item(input<Iter> &in, const std::string &) { + return _parse(*this, in); + } + +private: + null_parse_context(const null_parse_context &); + null_parse_context &operator=(const null_parse_context &); +}; + +// obsolete, use the version below +template <typename Iter> inline std::string parse(value &out, Iter &pos, const Iter &last) { + std::string err; + pos = parse(out, pos, last, &err); + return err; +} + +template <typename Context, typename Iter> inline Iter _parse(Context &ctx, const Iter &first, const Iter &last, std::string *err) { + input<Iter> in(first, last); + if (!_parse(ctx, in) && err != NULL) { + char buf[64]; + SNPRINTF(buf, sizeof(buf), "syntax error at line %d near: ", in.line()); + *err = buf; + while (1) { + int ch = in.getc(); + if (ch == -1 || ch == '\n') { + break; + } else if (ch >= ' ') { + err->push_back(static_cast<char>(ch)); + } + } + } + return in.cur(); +} + +template <typename Iter> inline Iter parse(value &out, const Iter &first, const Iter &last, std::string *err) { + default_parse_context ctx(&out); + return _parse(ctx, first, last, err); +} + +inline std::string parse(value &out, const std::string &s) { + std::string err; + parse(out, s.begin(), s.end(), &err); + return err; +} + +inline std::string parse(value &out, std::istream &is) { + std::string err; + parse(out, std::istreambuf_iterator<char>(is.rdbuf()), std::istreambuf_iterator<char>(), &err); + return err; +} + +template <typename T> struct last_error_t { static std::string s; }; +template <typename T> std::string last_error_t<T>::s; + +inline void set_last_error(const std::string &s) { + last_error_t<bool>::s = s; +} + +inline const std::string &get_last_error() { + return last_error_t<bool>::s; +} + +inline bool operator==(const value &x, const value &y) { + if (x.is<null>()) + return y.is<null>(); +#define PICOJSON_CMP(type) \ + if (x.is<type>()) \ + return y.is<type>() && x.get<type>() == y.get<type>() + PICOJSON_CMP(bool); + PICOJSON_CMP(double); + PICOJSON_CMP(std::string); + PICOJSON_CMP(array); + PICOJSON_CMP(object); +#undef PICOJSON_CMP + PICOJSON_ASSERT(0); +#ifdef _MSC_VER + __assume(0); +#endif + return false; +} + +inline bool operator!=(const value &x, const value &y) { + return !(x == y); +} +} + +#if !PICOJSON_USE_RVALUE_REFERENCE +namespace std { +template <> inline void swap(picojson::value &x, picojson::value &y) { + x.swap(y); +} +} +#endif + +inline std::istream &operator>>(std::istream &is, picojson::value &x) { + picojson::set_last_error(std::string()); + const std::string err(picojson::parse(x, is)); + if (!err.empty()) { + picojson::set_last_error(err); + is.setstate(std::ios::failbit); + } + return is; +} + +inline std::ostream &operator<<(std::ostream &os, const picojson::value &x) { + x.serialize(std::ostream_iterator<char>(os)); + return os; +} +#ifdef _MSC_VER +#pragma warning(pop) +#endif + +#endif |