470 lines
14 KiB
C++
470 lines
14 KiB
C++
#ifndef NODE_CONVERT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#define NODE_CONVERT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#if defined(_MSC_VER) || \
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(defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
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(__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
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#pragma once
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#endif
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#include <array>
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#include <cmath>
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#include <limits>
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#include <list>
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#include <map>
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#include <unordered_map>
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#include <sstream>
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#include <type_traits>
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#include <valarray>
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#include <vector>
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#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || __cplusplus >= 201703L)
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#include <string_view>
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#endif
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#include "yaml-cpp/binary.h"
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#include "yaml-cpp/node/impl.h"
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#include "yaml-cpp/node/iterator.h"
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#include "yaml-cpp/node/node.h"
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#include "yaml-cpp/node/type.h"
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#include "yaml-cpp/null.h"
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namespace YAML {
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class Binary;
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struct _Null;
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template <typename T>
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struct convert;
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} // namespace YAML
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namespace YAML {
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namespace conversion {
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inline bool IsInfinity(const std::string& input) {
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return input == ".inf" || input == ".Inf" || input == ".INF" ||
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input == "+.inf" || input == "+.Inf" || input == "+.INF";
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}
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inline bool IsNegativeInfinity(const std::string& input) {
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return input == "-.inf" || input == "-.Inf" || input == "-.INF";
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}
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inline bool IsNaN(const std::string& input) {
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return input == ".nan" || input == ".NaN" || input == ".NAN";
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}
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}
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// Node
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template <>
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struct convert<Node> {
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static Node encode(const Node& rhs) { return rhs; }
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static bool decode(const Node& node, Node& rhs) {
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rhs.reset(node);
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return true;
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}
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};
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// std::string
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template <>
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struct convert<std::string> {
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static Node encode(const std::string& rhs) { return Node(rhs); }
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static bool decode(const Node& node, std::string& rhs) {
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if (!node.IsScalar())
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return false;
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rhs = node.Scalar();
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return true;
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}
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};
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// C-strings can only be encoded
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template <>
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struct convert<const char*> {
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static Node encode(const char* rhs) { return Node(rhs); }
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};
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template <>
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struct convert<char*> {
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static Node encode(const char* rhs) { return Node(rhs); }
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};
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template <std::size_t N>
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struct convert<char[N]> {
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static Node encode(const char* rhs) { return Node(rhs); }
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};
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#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || __cplusplus >= 201703L)
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template <>
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struct convert<std::string_view> {
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static Node encode(std::string_view rhs) { return Node(std::string(rhs)); }
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static bool decode(const Node& node, std::string_view& rhs) {
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if (!node.IsScalar())
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return false;
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rhs = node.Scalar();
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return true;
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}
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};
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#endif
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template <>
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struct convert<_Null> {
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static Node encode(const _Null& /* rhs */) { return Node(); }
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static bool decode(const Node& node, _Null& /* rhs */) {
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return node.IsNull();
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}
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};
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namespace conversion {
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template <typename T>
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typename std::enable_if< std::is_floating_point<T>::value, void>::type
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inner_encode(const T& rhs, std::stringstream& stream){
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if (std::isnan(rhs)) {
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stream << ".nan";
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} else if (std::isinf(rhs)) {
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if (std::signbit(rhs)) {
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stream << "-.inf";
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} else {
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stream << ".inf";
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}
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} else {
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stream << rhs;
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}
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}
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template <typename T>
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typename std::enable_if<!std::is_floating_point<T>::value, void>::type
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inner_encode(const T& rhs, std::stringstream& stream){
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stream << rhs;
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}
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template <typename T>
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typename std::enable_if<(std::is_same<T, unsigned char>::value ||
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std::is_same<T, signed char>::value), bool>::type
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ConvertStreamTo(std::stringstream& stream, T& rhs) {
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int num;
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if ((stream >> std::noskipws >> num) && (stream >> std::ws).eof()) {
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if (num >= (std::numeric_limits<T>::min)() &&
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num <= (std::numeric_limits<T>::max)()) {
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rhs = static_cast<T>(num);
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return true;
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}
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}
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return false;
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}
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template <typename T>
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typename std::enable_if<!(std::is_same<T, unsigned char>::value ||
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std::is_same<T, signed char>::value), bool>::type
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ConvertStreamTo(std::stringstream& stream, T& rhs) {
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if ((stream >> std::noskipws >> rhs) && (stream >> std::ws).eof()) {
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return true;
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}
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return false;
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}
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}
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#define YAML_DEFINE_CONVERT_STREAMABLE(type, negative_op) \
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template <> \
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struct convert<type> { \
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\
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static Node encode(const type& rhs) { \
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std::stringstream stream; \
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stream.precision(std::numeric_limits<type>::max_digits10); \
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conversion::inner_encode(rhs, stream); \
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return Node(stream.str()); \
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} \
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\
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static bool decode(const Node& node, type& rhs) { \
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if (node.Type() != NodeType::Scalar) { \
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return false; \
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} \
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const std::string& input = node.Scalar(); \
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std::stringstream stream(input); \
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stream.unsetf(std::ios::dec); \
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if ((stream.peek() == '-') && std::is_unsigned<type>::value) { \
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return false; \
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} \
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if (conversion::ConvertStreamTo(stream, rhs)) { \
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return true; \
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} \
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if (std::numeric_limits<type>::has_infinity) { \
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if (conversion::IsInfinity(input)) { \
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rhs = std::numeric_limits<type>::infinity(); \
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return true; \
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} else if (conversion::IsNegativeInfinity(input)) { \
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rhs = negative_op std::numeric_limits<type>::infinity(); \
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return true; \
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} \
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} \
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\
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if (std::numeric_limits<type>::has_quiet_NaN) { \
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if (conversion::IsNaN(input)) { \
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rhs = std::numeric_limits<type>::quiet_NaN(); \
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return true; \
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} \
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} \
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\
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return false; \
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} \
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}
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#define YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(type) \
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YAML_DEFINE_CONVERT_STREAMABLE(type, -)
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#define YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(type) \
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YAML_DEFINE_CONVERT_STREAMABLE(type, +)
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(int);
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(short);
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(long);
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(long long);
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YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned);
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YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned short);
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YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned long);
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YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned long long);
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(char);
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(signed char);
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YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned char);
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(float);
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(double);
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YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(long double);
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#undef YAML_DEFINE_CONVERT_STREAMABLE_SIGNED
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#undef YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED
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#undef YAML_DEFINE_CONVERT_STREAMABLE
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// bool
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template <>
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struct convert<bool> {
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static Node encode(bool rhs) { return rhs ? Node("true") : Node("false"); }
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YAML_CPP_API static bool decode(const Node& node, bool& rhs);
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};
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// std::map
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template <typename K, typename V, typename C, typename A>
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struct convert<std::map<K, V, C, A>> {
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static Node encode(const std::map<K, V, C, A>& rhs) {
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Node node(NodeType::Map);
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for (const auto& element : rhs)
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node.force_insert(element.first, element.second);
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return node;
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}
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static bool decode(const Node& node, std::map<K, V, C, A>& rhs) {
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if (!node.IsMap())
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return false;
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rhs.clear();
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for (const auto& element : node)
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#if defined(__GNUC__) && __GNUC__ < 4
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// workaround for GCC 3:
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rhs[element.first.template as<K>()] = element.second.template as<V>();
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#else
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rhs[element.first.as<K>()] = element.second.as<V>();
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#endif
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return true;
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}
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};
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// std::unordered_map
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template <typename K, typename V, typename H, typename P, typename A>
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struct convert<std::unordered_map<K, V, H, P, A>> {
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static Node encode(const std::unordered_map<K, V, H, P, A>& rhs) {
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Node node(NodeType::Map);
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for (const auto& element : rhs)
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node.force_insert(element.first, element.second);
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return node;
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}
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static bool decode(const Node& node, std::unordered_map<K, V, H, P, A>& rhs) {
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if (!node.IsMap())
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return false;
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rhs.clear();
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for (const auto& element : node)
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#if defined(__GNUC__) && __GNUC__ < 4
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// workaround for GCC 3:
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rhs[element.first.template as<K>()] = element.second.template as<V>();
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#else
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rhs[element.first.as<K>()] = element.second.as<V>();
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#endif
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return true;
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}
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};
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// std::vector
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template <typename T, typename A>
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struct convert<std::vector<T, A>> {
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static Node encode(const std::vector<T, A>& rhs) {
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Node node(NodeType::Sequence);
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for (const auto& element : rhs)
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node.push_back(element);
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return node;
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}
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static bool decode(const Node& node, std::vector<T, A>& rhs) {
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if (!node.IsSequence())
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return false;
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rhs.clear();
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for (const auto& element : node)
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#if defined(__GNUC__) && __GNUC__ < 4
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// workaround for GCC 3:
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rhs.push_back(element.template as<T>());
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#else
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rhs.push_back(element.as<T>());
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#endif
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return true;
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}
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};
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// std::list
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template <typename T, typename A>
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struct convert<std::list<T,A>> {
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static Node encode(const std::list<T,A>& rhs) {
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Node node(NodeType::Sequence);
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for (const auto& element : rhs)
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node.push_back(element);
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return node;
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}
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static bool decode(const Node& node, std::list<T,A>& rhs) {
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if (!node.IsSequence())
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return false;
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rhs.clear();
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for (const auto& element : node)
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#if defined(__GNUC__) && __GNUC__ < 4
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// workaround for GCC 3:
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rhs.push_back(element.template as<T>());
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#else
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rhs.push_back(element.as<T>());
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#endif
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return true;
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}
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};
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// std::array
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template <typename T, std::size_t N>
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struct convert<std::array<T, N>> {
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static Node encode(const std::array<T, N>& rhs) {
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Node node(NodeType::Sequence);
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for (const auto& element : rhs) {
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node.push_back(element);
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}
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return node;
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}
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static bool decode(const Node& node, std::array<T, N>& rhs) {
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if (!isNodeValid(node)) {
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return false;
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}
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for (auto i = 0u; i < node.size(); ++i) {
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#if defined(__GNUC__) && __GNUC__ < 4
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// workaround for GCC 3:
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rhs[i] = node[i].template as<T>();
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#else
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rhs[i] = node[i].as<T>();
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#endif
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}
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return true;
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}
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private:
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static bool isNodeValid(const Node& node) {
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return node.IsSequence() && node.size() == N;
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}
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};
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// std::valarray
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template <typename T>
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struct convert<std::valarray<T>> {
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static Node encode(const std::valarray<T>& rhs) {
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Node node(NodeType::Sequence);
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for (const auto& element : rhs) {
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node.push_back(element);
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}
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return node;
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}
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static bool decode(const Node& node, std::valarray<T>& rhs) {
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if (!node.IsSequence()) {
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return false;
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}
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rhs.resize(node.size());
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for (auto i = 0u; i < node.size(); ++i) {
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#if defined(__GNUC__) && __GNUC__ < 4
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// workaround for GCC 3:
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rhs[i] = node[i].template as<T>();
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#else
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rhs[i] = node[i].as<T>();
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#endif
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}
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return true;
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}
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};
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// std::pair
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template <typename T, typename U>
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struct convert<std::pair<T, U>> {
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static Node encode(const std::pair<T, U>& rhs) {
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Node node(NodeType::Sequence);
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node.push_back(rhs.first);
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node.push_back(rhs.second);
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return node;
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}
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static bool decode(const Node& node, std::pair<T, U>& rhs) {
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if (!node.IsSequence())
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return false;
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if (node.size() != 2)
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return false;
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#if defined(__GNUC__) && __GNUC__ < 4
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// workaround for GCC 3:
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rhs.first = node[0].template as<T>();
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#else
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rhs.first = node[0].as<T>();
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#endif
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#if defined(__GNUC__) && __GNUC__ < 4
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// workaround for GCC 3:
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rhs.second = node[1].template as<U>();
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#else
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rhs.second = node[1].as<U>();
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#endif
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return true;
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}
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};
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// binary
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template <>
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struct convert<Binary> {
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static Node encode(const Binary& rhs) {
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return Node(EncodeBase64(rhs.data(), rhs.size()));
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}
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static bool decode(const Node& node, Binary& rhs) {
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if (!node.IsScalar())
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return false;
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std::vector<unsigned char> data = DecodeBase64(node.Scalar());
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if (data.empty() && !node.Scalar().empty())
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return false;
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rhs.swap(data);
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return true;
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}
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};
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}
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#endif // NODE_CONVERT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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