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#ifndef TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#define TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#if defined(_MSC_VER) || \
(defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
(__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
#pragma once
#endif
#include <type_traits>
#include <utility>
#include <string>
#include <sstream>
namespace YAML {
template <typename>
struct is_numeric {
enum { value = false };
};
template <>
struct is_numeric<char> {
enum { value = true };
};
template <>
struct is_numeric<unsigned char> {
enum { value = true };
};
template <>
struct is_numeric<int> {
enum { value = true };
};
template <>
struct is_numeric<unsigned int> {
enum { value = true };
};
template <>
struct is_numeric<long int> {
enum { value = true };
};
template <>
struct is_numeric<unsigned long int> {
enum { value = true };
};
template <>
struct is_numeric<short int> {
enum { value = true };
};
template <>
struct is_numeric<unsigned short int> {
enum { value = true };
};
#if defined(_MSC_VER) && (_MSC_VER < 1310)
template <>
struct is_numeric<__int64> {
enum { value = true };
};
template <>
struct is_numeric<unsigned __int64> {
enum { value = true };
};
#else
template <>
struct is_numeric<long long> {
enum { value = true };
};
template <>
struct is_numeric<unsigned long long> {
enum { value = true };
};
#endif
template <>
struct is_numeric<float> {
enum { value = true };
};
template <>
struct is_numeric<double> {
enum { value = true };
};
template <>
struct is_numeric<long double> {
enum { value = true };
};
template <bool, class T = void>
struct enable_if_c {
using type = T;
};
template <class T>
struct enable_if_c<false, T> {};
template <class Cond, class T = void>
struct enable_if : public enable_if_c<Cond::value, T> {};
template <bool, class T = void>
struct disable_if_c {
using type = T;
};
template <class T>
struct disable_if_c<true, T> {};
template <class Cond, class T = void>
struct disable_if : public disable_if_c<Cond::value, T> {};
}
template <typename S, typename T>
struct is_streamable {
template <typename StreamT, typename ValueT>
static auto test(int)
-> decltype(std::declval<StreamT&>() << std::declval<ValueT>(), std::true_type());
template <typename, typename>
static auto test(...) -> std::false_type;
static const bool value = decltype(test<S, T>(0))::value;
};
template<typename Key, bool Streamable>
struct streamable_to_string {
static std::string impl(const Key& key) {
std::stringstream ss;
ss << key;
return ss.str();
}
};
template<typename Key>
struct streamable_to_string<Key, false> {
static std::string impl(const Key&) {
return "";
}
};
#endif // TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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