json.hpp File Reference

#include <algorithm>
#include <array>
#include <cassert>
#include <cctype>
#include <ciso646>
#include <cmath>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <forward_list>
#include <functional>
#include <initializer_list>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <locale>
#include <map>
#include <memory>
#include <numeric>
#include <sstream>
#include <stdexcept>
#include <string>
#include <type_traits>
#include <utility>
#include <vector>

Include dependency graph for json.hpp:

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Data Structures
struct	nlohmann::detail::conjunction<... >
struct	nlohmann::detail::conjunction< B1 >
struct	nlohmann::detail::conjunction< B1, Bn... >
struct	nlohmann::detail::negation< B >
struct	nlohmann::detail::priority_tag< N >
struct	nlohmann::detail::priority_tag< 0 >
struct	nlohmann::detail::external_constructor< value_t >
struct	nlohmann::detail::external_constructor< value_t::boolean >
struct	nlohmann::detail::external_constructor< value_t::string >
struct	nlohmann::detail::external_constructor< value_t::number_float >
struct	nlohmann::detail::external_constructor< value_t::number_unsigned >
struct	nlohmann::detail::external_constructor< value_t::number_integer >
struct	nlohmann::detail::external_constructor< value_t::array >
struct	nlohmann::detail::external_constructor< value_t::object >
struct	nlohmann::detail::is_compatible_object_type_impl< B, RealType, CompatibleObjectType >
struct	nlohmann::detail::is_compatible_object_type_impl< true, RealType, CompatibleObjectType >
struct	nlohmann::detail::is_compatible_object_type< BasicJsonType, CompatibleObjectType >
struct	nlohmann::detail::is_basic_json_nested_type< BasicJsonType, T >
struct	nlohmann::detail::is_compatible_array_type< BasicJsonType, CompatibleArrayType >
struct	nlohmann::detail::is_compatible_integer_type_impl< bool, typename, typename >
struct	nlohmann::detail::is_compatible_integer_type_impl< true, RealIntegerType, CompatibleNumberIntegerType >
struct	nlohmann::detail::is_compatible_integer_type< RealIntegerType, CompatibleNumberIntegerType >
struct	nlohmann::detail::has_from_json< BasicJsonType, T >
struct	nlohmann::detail::has_non_default_from_json< BasicJsonType, T >
struct	nlohmann::detail::has_to_json< BasicJsonType, T >
struct	nlohmann::detail::to_json_fn
struct	nlohmann::detail::from_json_fn
struct	nlohmann::detail::static_const< T >
struct	nlohmann::adl_serializer< typename, typename >
	default JSONSerializer template argument More...
class	nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >
	a class to store JSON values More...
class	nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >::iter_impl< U >
	a template for a random access iterator for the basic_json class More...
class	nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >::json_reverse_iterator< Base >
	a template for a reverse iterator class More...
class	nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >::iter_impl< U >
	a template for a random access iterator for the basic_json class More...
class	nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >::json_reverse_iterator< Base >
	a template for a reverse iterator class More...
struct	nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >::lexer::strtonum
	parse string into a built-in arithmetic type as if the current locale is POSIX. More...
class	nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer >::json_pointer
	JSON Pointer. More...
struct	std::hash< nlohmann::json >
	hash value for JSON objects More...

Namespaces
	nlohmann
	namespace for Niels Lohmann
	nlohmann::detail
	unnamed namespace with internal helper functions
	std

Macros
#define	JSON_DEPRECATED
#define	JSON_THROW(exception)   std::abort()
#define	JSON_TRY   if(true)
#define	JSON_CATCH(exception)   if(false)
#define	NLOHMANN_JSON_HAS_HELPER(type)
	Helper to determine whether there's a key_type for T. More...

Typedefs
template<bool B, typename T = void>
using	nlohmann::detail::enable_if_t = typename std::enable_if< B, T >::type
template<typename T >
using	nlohmann::detail::uncvref_t = typename std::remove_cv< typename std::remove_reference< T >::type >::type
template<typename T >
using	nlohmann::detail::is_unscoped_enum = std::integral_constant< bool, std::is_convertible< T, int >::value and std::is_enum< T >::value >
using	nlohmann::json = basic_json<>
	default JSON class More...

Enumerations
enum	nlohmann::detail::value_t : uint8_t {   nlohmann::detail::value_t::null, nlohmann::detail::value_t::object, nlohmann::detail::value_t::array, nlohmann::detail::value_t::string,   nlohmann::detail::value_t::boolean, nlohmann::detail::value_t::number_integer, nlohmann::detail::value_t::number_unsigned, nlohmann::detail::value_t::number_float,   nlohmann::detail::value_t::discarded }
	the JSON type enumeration More...

Functions
bool	nlohmann::detail::operator< (const value_t lhs, const value_t rhs) noexcept
	comparison operator for JSON types More...
	nlohmann::detail::NLOHMANN_JSON_HAS_HELPER (mapped_type)
	nlohmann::detail::NLOHMANN_JSON_HAS_HELPER (key_type)
	nlohmann::detail::NLOHMANN_JSON_HAS_HELPER (value_type)
	nlohmann::detail::NLOHMANN_JSON_HAS_HELPER (iterator)
template<typename BasicJsonType , typename T , enable_if_t< std::is_same< T, typename BasicJsonType::boolean_t >::value, int > = 0>
void	nlohmann::detail::to_json (BasicJsonType &j, T b) noexcept
template<typename BasicJsonType , typename CompatibleString , enable_if_t< std::is_constructible< typename BasicJsonType::string_t, CompatibleString >::value, int > = 0>
void	nlohmann::detail::to_json (BasicJsonType &j, const CompatibleString &s)
template<typename BasicJsonType , typename FloatType , enable_if_t< std::is_floating_point< FloatType >::value, int > = 0>
void	nlohmann::detail::to_json (BasicJsonType &j, FloatType val) noexcept
template<typename BasicJsonType , typename CompatibleNumberUnsignedType , enable_if_t< is_compatible_integer_type< typename BasicJsonType::number_unsigned_t, CompatibleNumberUnsignedType >::value, int > = 0>
void	nlohmann::detail::to_json (BasicJsonType &j, CompatibleNumberUnsignedType val) noexcept
template<typename BasicJsonType , typename CompatibleNumberIntegerType , enable_if_t< is_compatible_integer_type< typename BasicJsonType::number_integer_t, CompatibleNumberIntegerType >::value, int > = 0>
void	nlohmann::detail::to_json (BasicJsonType &j, CompatibleNumberIntegerType val) noexcept
template<typename BasicJsonType , typename UnscopedEnumType , enable_if_t< is_unscoped_enum< UnscopedEnumType >::value, int > = 0>
void	nlohmann::detail::to_json (BasicJsonType &j, UnscopedEnumType e) noexcept
template<typename BasicJsonType , typename CompatibleArrayType , enable_if_t< is_compatible_array_type< BasicJsonType, CompatibleArrayType >::value or std::is_same< typename BasicJsonType::array_t, CompatibleArrayType >::value, int > = 0>
void	nlohmann::detail::to_json (BasicJsonType &j, const CompatibleArrayType &arr)
template<typename BasicJsonType , typename CompatibleObjectType , enable_if_t< is_compatible_object_type< BasicJsonType, CompatibleObjectType >::value, int > = 0>
void	nlohmann::detail::to_json (BasicJsonType &j, const CompatibleObjectType &arr)
template<typename BasicJsonType , typename ArithmeticType , enable_if_t< std::is_arithmetic< ArithmeticType >::value and not std::is_same< ArithmeticType, typename BasicJsonType::boolean_t >::value, int > = 0>
void	nlohmann::detail::get_arithmetic_value (const BasicJsonType &j, ArithmeticType &val)
template<typename BasicJsonType >
void	nlohmann::detail::from_json (const BasicJsonType &j, typename BasicJsonType::boolean_t &b)
template<typename BasicJsonType >
void	nlohmann::detail::from_json (const BasicJsonType &j, typename BasicJsonType::string_t &s)
template<typename BasicJsonType >
void	nlohmann::detail::from_json (const BasicJsonType &j, typename BasicJsonType::number_float_t &val)
template<typename BasicJsonType >
void	nlohmann::detail::from_json (const BasicJsonType &j, typename BasicJsonType::number_unsigned_t &val)
template<typename BasicJsonType >
void	nlohmann::detail::from_json (const BasicJsonType &j, typename BasicJsonType::number_integer_t &val)
template<typename BasicJsonType , typename UnscopedEnumType , enable_if_t< is_unscoped_enum< UnscopedEnumType >::value, int > = 0>
void	nlohmann::detail::from_json (const BasicJsonType &j, UnscopedEnumType &e)
template<typename BasicJsonType >
void	nlohmann::detail::from_json (const BasicJsonType &j, typename BasicJsonType::array_t &arr)
template<typename BasicJsonType , typename T , typename Allocator >
void	nlohmann::detail::from_json (const BasicJsonType &j, std::forward_list< T, Allocator > &l)
template<typename BasicJsonType , typename CompatibleArrayType >
void	nlohmann::detail::from_json_array_impl (const BasicJsonType &j, CompatibleArrayType &arr, priority_tag< 0 >)
template<typename BasicJsonType , typename CompatibleArrayType >
auto	nlohmann::detail::from_json_array_impl (const BasicJsonType &j, CompatibleArrayType &arr, priority_tag< 1 >) -> decltype(arr.reserve(std::declval< typename CompatibleArrayType::size_type >()), void())
template<typename BasicJsonType , typename CompatibleArrayType , enable_if_t< is_compatible_array_type< BasicJsonType, CompatibleArrayType >::value and not std::is_same< typename BasicJsonType::array_t, CompatibleArrayType >::value, int > = 0>
void	nlohmann::detail::from_json (const BasicJsonType &j, CompatibleArrayType &arr)
template<typename BasicJsonType , typename CompatibleObjectType , enable_if_t< is_compatible_object_type< BasicJsonType, CompatibleObjectType >::value, int > = 0>
void	nlohmann::detail::from_json (const BasicJsonType &j, CompatibleObjectType &obj)
template<typename BasicJsonType , typename ArithmeticType , enable_if_t< std::is_arithmetic< ArithmeticType >::value and not std::is_same< ArithmeticType, typename BasicJsonType::number_unsigned_t >::value and not std::is_same< ArithmeticType, typename BasicJsonType::number_integer_t >::value and not std::is_same< ArithmeticType, typename BasicJsonType::number_float_t >::value and not std::is_same< ArithmeticType, typename BasicJsonType::boolean_t >::value, int > = 0>
void	nlohmann::detail::from_json (const BasicJsonType &j, ArithmeticType &val)
template<>
void	std::swap (nlohmann::json &j1, nlohmann::json &j2) noexcept(is_nothrow_move_constructible< nlohmann::json >::value and is_nothrow_move_assignable< nlohmann::json >::value)
	exchanges the values of two JSON objects More...
nlohmann::json	operator""_json (const char *s, std::size_t n)
	user-defined string literal for JSON values More...
nlohmann::json::json_pointer	operator""_json_pointer (const char *s, std::size_t n)
	user-defined string literal for JSON pointer More...

Macro Definition Documentation

JSON_CATCH

#define JSON_CATCH

(

exception

)

if(false)

JSON_DEPRECATED

#define JSON_DEPRECATED

JSON_THROW

#define JSON_THROW

(

exception

)

std::abort()

JSON_TRY

#define JSON_TRY   if(true)

NLOHMANN_JSON_HAS_HELPER

#define NLOHMANN_JSON_HAS_HELPER

(

type

)

Value:

template<typename T> struct has_##type {                                  \
    private:                                                                  \
        template<typename U, typename = typename U::type>                     \
        static int detect(U &&);                                              \
        static void detect(...);                                              \
    public:                                                                   \
        static constexpr bool value =                                         \
                std::is_integral<decltype(detect(std::declval<T>()))>::value; \
    }

Helper to determine whether there's a key_type for T.

This helper is used to tell associative containers apart from other containers such as sequence containers. For instance, std::map passes the test as it contains a mapped_type, whereas std::vector fails the test.

See also

http://stackoverflow.com/a/7728728/266378

Since

version 1.0.0, overworked in version 2.0.6

Function Documentation

operator""_json()

nlohmann::json operator""_json ( const char *  s, std::size_t  n  )

inline

user-defined string literal for JSON values

This operator implements a user-defined string literal for JSON objects. It can be used by adding "_json" to a string literal and returns a JSON object if no parse error occurred.

Parameters

[in]	s	a string representation of a JSON object
[in]	n	the length of string s

Returns

a JSON object

Since

version 1.0.0

Here is the call graph for this function:

operator""_json_pointer()

nlohmann::json::json_pointer operator""_json_pointer ( const char *  s, std::size_t  n  )

inline

user-defined string literal for JSON pointer

This operator implements a user-defined string literal for JSON Pointers. It can be used by adding "_json_pointer" to a string literal and returns a JSON pointer object if no parse error occurred.

Parameters

[in]	s	a string representation of a JSON Pointer
[in]	n	the length of string s

Returns

a JSON pointer object

Since

version 2.0.0