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// Copyright 2019 Daniel Parker
// Distributed under the Boost license, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See https://github.com/danielaparker/jsoncons for latest version
#ifndef JSONCONS_CONFIG_JSONCONS_CONFIG_HPP
#define JSONCONS_CONFIG_JSONCONS_CONFIG_HPP
#include <type_traits>
#include <limits>
#include <jsoncons/config/compiler_support.hpp>
#include <jsoncons/config/binary_config.hpp>
#if !defined(JSONCONS_HAS_STD_STRING_VIEW)
#include <jsoncons/detail/string_view.hpp>
namespace jsoncons {
using jsoncons::detail::basic_string_view;
using string_view = basic_string_view<char, std::char_traits<char>>;
using wstring_view = basic_string_view<wchar_t, std::char_traits<wchar_t>>;
}
#else
#include <string_view>
namespace jsoncons {
using std::basic_string_view;
using std::string_view;
using std::wstring_view;
}
#endif
#if !defined(JSONCONS_HAS_STD_SPAN)
#include <jsoncons/detail/span.hpp>
namespace jsoncons {
using jsoncons::detail::span;
}
#else
#include <span>
namespace jsoncons {
using std::span;
}
#endif
#if defined(JSONCONS_HAS_STD_OPTIONAL)
#include <optional>
namespace jsoncons {
using std::optional;
}
#elif defined(JSONCONS_HAS_BOOST_OPTIONAL)
#include <boost/optional.hpp>
namespace jsoncons {
using boost::optional;
}
#else
#include <jsoncons/detail/optional.hpp>
namespace jsoncons {
using jsoncons::detail::optional;
}
#endif // !defined(JSONCONS_HAS_STD_OPTIONAL)
#if !defined(JSONCONS_HAS_STD_ENDIAN)
#include <jsoncons/detail/endian.hpp>
namespace jsoncons {
using jsoncons::detail::endian;
}
#else
#include <bit>
namespace jsoncons
{
using std::endian;
}
#endif
#if !defined(JSONCONS_HAS_STD_MAKE_UNIQUE)
#include <cstddef>
#include <memory>
#include <type_traits>
#include <utility>
namespace jsoncons {
template<class T>
struct unique_if
{
using value_is_not_array = std::unique_ptr<T>;
};
template<class T>
struct unique_if<T[]>
{
typedef std::unique_ptr<T[]> value_is_array_of_unknown_bound;
};
template<class T, std::size_t N>
struct unique_if<T[N]> {
using value_is_array_of_known_bound = void;
};
template<class T, class... Args>
typename unique_if<T>::value_is_not_array
make_unique(Args&&... args)
{
return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
}
template<class T>
typename unique_if<T>::value_is_array_of_unknown_bound
make_unique(std::size_t n)
{
using U = typename std::remove_extent<T>::type;
return std::unique_ptr<T>(new U[n]());
}
template<class T, class... Args>
typename unique_if<T>::value_is_array_of_known_bound
make_unique(Args&&...) = delete;
} // jsoncons
#else
#include <memory>
namespace jsoncons
{
using std::make_unique;
}
#endif // !defined(JSONCONS_HAS_STD_MAKE_UNIQUE)
namespace jsoncons {
namespace binary {
// native_to_big
template<typename T, class OutputIt, class Endian=endian>
typename std::enable_if<Endian::native == Endian::big,void>::type
native_to_big(T val, OutputIt d_first)
{
uint8_t buf[sizeof(T)];
std::memcpy(buf, &val, sizeof(T));
for (auto item : buf)
{
*d_first++ = item;
}
}
template<typename T, class OutputIt, class Endian=endian>
typename std::enable_if<Endian::native == Endian::little,void>::type
native_to_big(T val, OutputIt d_first)
{
T val2 = byte_swap(val);
uint8_t buf[sizeof(T)];
std::memcpy(buf, &val2, sizeof(T));
for (auto item : buf)
{
*d_first++ = item;
}
}
// native_to_little
template<typename T, class OutputIt, class Endian = endian>
typename std::enable_if<Endian::native == Endian::little,void>::type
native_to_little(T val, OutputIt d_first)
{
uint8_t buf[sizeof(T)];
std::memcpy(buf, &val, sizeof(T));
for (auto item : buf)
{
*d_first++ = item;
}
}
template<typename T, class OutputIt, class Endian=endian>
typename std::enable_if<Endian::native == Endian::big, void>::type
native_to_little(T val, OutputIt d_first)
{
T val2 = byte_swap(val);
uint8_t buf[sizeof(T)];
std::memcpy(buf, &val2, sizeof(T));
for (auto item : buf)
{
*d_first++ = item;
}
}
// big_to_native
template<class T,class Endian=endian>
typename std::enable_if<Endian::native == Endian::big,T>::type
big_to_native(const uint8_t* first, std::size_t count)
{
if (sizeof(T) > count)
{
return T{};
}
T val;
std::memcpy(&val,first,sizeof(T));
return val;
}
template<class T,class Endian=endian>
typename std::enable_if<Endian::native == Endian::little,T>::type
big_to_native(const uint8_t* first, std::size_t count)
{
if (sizeof(T) > count)
{
return T{};
}
T val;
std::memcpy(&val,first,sizeof(T));
return byte_swap(val);
}
// little_to_native
template<class T,class Endian=endian>
typename std::enable_if<Endian::native == Endian::little,T>::type
little_to_native(const uint8_t* first, std::size_t count)
{
if (sizeof(T) > count)
{
return T{};
}
T val;
std::memcpy(&val,first,sizeof(T));
return val;
}
template<class T,class Endian=endian>
typename std::enable_if<Endian::native == Endian::big,T>::type
little_to_native(const uint8_t* first, std::size_t count)
{
if (sizeof(T) > count)
{
return T{};
}
T val;
std::memcpy(&val,first,sizeof(T));
return byte_swap(val);
}
} // binary
} // jsoncons
namespace jsoncons {
template<typename CharT>
constexpr const CharT* cstring_constant_of_type(const char* c, const wchar_t* w);
template<> inline
constexpr const char* cstring_constant_of_type<char>(const char* c, const wchar_t*)
{
return c;
}
template<> inline
constexpr const wchar_t* cstring_constant_of_type<wchar_t>(const char*, const wchar_t* w)
{
return w;
}
template<typename CharT>
std::basic_string<CharT> string_constant_of_type(const char* c, const wchar_t* w);
template<> inline
std::string string_constant_of_type<char>(const char* c, const wchar_t*)
{
return std::string(c);
}
template<> inline
std::wstring string_constant_of_type<wchar_t>(const char*, const wchar_t* w)
{
return std::wstring(w);
}
template<typename CharT>
jsoncons::basic_string_view<CharT> string_view_constant_of_type(const char* c, const wchar_t* w);
template<> inline
jsoncons::string_view string_view_constant_of_type<char>(const char* c, const wchar_t*)
{
return jsoncons::string_view(c);
}
template<> inline
jsoncons::wstring_view string_view_constant_of_type<wchar_t>(const char*, const wchar_t* w)
{
return jsoncons::wstring_view(w);
}
} // jsoncons
#define JSONCONS_EXPAND(X) X
#define JSONCONS_QUOTE(Prefix, A) JSONCONS_EXPAND(Prefix ## #A)
#define JSONCONS_CSTRING_CONSTANT(CharT, Str) cstring_constant_of_type<CharT>(Str, JSONCONS_QUOTE(L, Str))
#define JSONCONS_STRING_CONSTANT(CharT, Str) string_constant_of_type<CharT>(Str, JSONCONS_QUOTE(L, Str))
#define JSONCONS_STRING_VIEW_CONSTANT(CharT, Str) string_view_constant_of_type<CharT>(Str, JSONCONS_QUOTE(L, Str))
#if defined(__clang__)
#define JSONCONS_HAS_STD_REGEX 1
#elif (defined(__GNUC__) && (__GNUC__ == 4)) && (defined(__GNUC__) && __GNUC_MINOR__ < 9)
// GCC 4.8 has broken regex support: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631
#else
#define JSONCONS_HAS_STD_REGEX 1
#endif
#endif // JSONCONS_CONFIG_JSONCONS_CONFIG_HPP
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