unnamed namespace with internal helper functions More...

Data Structures
struct	conjunction

struct	conjunction< B1 >

struct	conjunction< B1, Bn... >

struct	external_constructor

struct	external_constructor< value_t::array >

struct	external_constructor< value_t::boolean >

struct	external_constructor< value_t::number_float >

struct	external_constructor< value_t::number_integer >

struct	external_constructor< value_t::number_unsigned >

struct	external_constructor< value_t::object >

struct	external_constructor< value_t::string >

struct	from_json_fn

struct	has_from_json

struct	has_non_default_from_json

struct	has_to_json

struct	is_basic_json_nested_type

struct	is_compatible_array_type

struct	is_compatible_integer_type

struct	is_compatible_integer_type_impl

struct	is_compatible_integer_type_impl< true, RealIntegerType, CompatibleNumberIntegerType >

struct	is_compatible_object_type

struct	is_compatible_object_type_impl

struct	is_compatible_object_type_impl< true, RealType, CompatibleObjectType >

struct	negation

struct	priority_tag

struct	priority_tag< 0 >

struct	static_const

struct	to_json_fn

Typedefs
template<bool B, typename T = void>
using	enable_if_t = typename std::enable_if< B, T >::type

template<typename T >
using	uncvref_t = typename std::remove_cv< typename std::remove_reference< T >::type >::type

template<typename T >
using	is_unscoped_enum = std::integral_constant< bool, std::is_convertible< T, int >::value and std::is_enum< T >::value >

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

Functions
bool	operator< (const value_t lhs, const value_t rhs) noexcept
	comparison operator for JSON types More...

	NLOHMANN_JSON_HAS_HELPER (mapped_type)

	NLOHMANN_JSON_HAS_HELPER (key_type)

	NLOHMANN_JSON_HAS_HELPER (value_type)

	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	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	to_json (BasicJsonType &j, const CompatibleString &s)

template<typename BasicJsonType , typename FloatType , enable_if_t< std::is_floating_point< FloatType >::value, int > = 0>
void	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	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	to_json (BasicJsonType &j, CompatibleNumberIntegerType val) noexcept

template<typename BasicJsonType , typename UnscopedEnumType , enable_if_t< is_unscoped_enum< UnscopedEnumType >::value, int > = 0>
void	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	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	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	get_arithmetic_value (const BasicJsonType &j, ArithmeticType &val)

template<typename BasicJsonType >
void	from_json (const BasicJsonType &j, typename BasicJsonType::boolean_t &b)

template<typename BasicJsonType >
void	from_json (const BasicJsonType &j, typename BasicJsonType::string_t &s)

template<typename BasicJsonType >
void	from_json (const BasicJsonType &j, typename BasicJsonType::number_float_t &val)

template<typename BasicJsonType >
void	from_json (const BasicJsonType &j, typename BasicJsonType::number_unsigned_t &val)

template<typename BasicJsonType >
void	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	from_json (const BasicJsonType &j, UnscopedEnumType &e)

template<typename BasicJsonType >
void	from_json (const BasicJsonType &j, typename BasicJsonType::array_t &arr)

template<typename BasicJsonType , typename T , typename Allocator >
void	from_json (const BasicJsonType &j, std::forward_list< T, Allocator > &l)

template<typename BasicJsonType , typename CompatibleArrayType >
void	from_json_array_impl (const BasicJsonType &j, CompatibleArrayType &arr, priority_tag< 0 >)

template<typename BasicJsonType , typename CompatibleArrayType >
auto	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	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	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	from_json (const BasicJsonType &j, ArithmeticType &val)

Detailed Description

unnamed namespace with internal helper functions

This namespace collects some functions that could not be defined inside the basic_json class.

Since: version 2.1.0

Typedef Documentation

◆ enable_if_t

template<bool B, typename T = void>

using nlohmann::detail::enable_if_t = typedef typename std::enable_if<B, T>::type

◆ is_unscoped_enum

template<typename T >

using nlohmann::detail::is_unscoped_enum = typedef std::integral_constant<bool, std::is_convertible<T, int>::value and std::is_enum<T>::value>

◆ uncvref_t

template<typename T >

using nlohmann::detail::uncvref_t = typedef typename std::remove_cv<typename std::remove_reference<T>::type>::type

Enumeration Type Documentation

◆ value_t

enum nlohmann::detail::value_t : uint8_t

strong

the JSON type enumeration

This enumeration collects the different JSON types. It is internally used to distinguish the stored values, and the functions basic_json::is_null(), basic_json::is_object(), basic_json::is_array(), basic_json::is_string(), basic_json::is_boolean(), basic_json::is_number() (with basic_json::is_number_integer(), basic_json::is_number_unsigned(), and basic_json::is_number_float()), basic_json::is_discarded(), basic_json::is_primitive(), and basic_json::is_structured() rely on it.

Note: There are three enumeration entries (number_integer, number_unsigned, and number_float), because the library distinguishes these three types for numbers: basic_json::number_unsigned_t is used for unsigned integers, basic_json::number_integer_t is used for signed integers, and basic_json::number_float_t is used for floating-point numbers or to approximate integers which do not fit in the limits of their respective type.

See also: basic_json::basic_json(const value_t value_type) – create a JSON value with the default value for a given type

Since: version 1.0.0

Enumerator
null	null value
object	object (unordered set of name/value pairs)
array	array (ordered collection of values)
string	string value
boolean	boolean value
number_integer	number value (signed integer)
number_unsigned	number value (unsigned integer)
number_float	number value (floating-point)
discarded	discarded by the the parser callback function

Function Documentation

◆ from_json() [1/11]

template<typename BasicJsonType >

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		typename BasicJsonType::boolean_t &	b
	)

◆ from_json() [2/11]

template<typename BasicJsonType >

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		typename BasicJsonType::string_t &	s
	)

◆ from_json() [3/11]

template<typename BasicJsonType >

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		typename BasicJsonType::number_float_t &	val
	)

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◆ from_json() [4/11]

template<typename BasicJsonType >

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		typename BasicJsonType::number_unsigned_t &	val
	)

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◆ from_json() [5/11]

template<typename BasicJsonType >

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		typename BasicJsonType::number_integer_t &	val
	)

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◆ from_json() [6/11]

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
	)

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◆ from_json() [7/11]

template<typename BasicJsonType >

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		typename BasicJsonType::array_t &	arr
	)

◆ from_json() [8/11]

template<typename BasicJsonType , typename T , typename Allocator >

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		std::forward_list< T, Allocator > &	l
	)

◆ from_json() [9/11]

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
	)

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◆ from_json() [10/11]

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
	)

◆ from_json() [11/11]

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
	)

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◆ from_json_array_impl() [1/2]

template<typename BasicJsonType , typename CompatibleArrayType >

void nlohmann::detail::from_json_array_impl	(	const BasicJsonType &	j,
		CompatibleArrayType &	arr,
		priority_tag< 0 >
	)

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◆ from_json_array_impl() [2/2]

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())

◆ get_arithmetic_value()

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
	)

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◆ NLOHMANN_JSON_HAS_HELPER() [1/4]

nlohmann::detail::NLOHMANN_JSON_HAS_HELPER ( mapped_type )

◆ NLOHMANN_JSON_HAS_HELPER() [2/4]

nlohmann::detail::NLOHMANN_JSON_HAS_HELPER ( key_type )

◆ NLOHMANN_JSON_HAS_HELPER() [3/4]

nlohmann::detail::NLOHMANN_JSON_HAS_HELPER ( value_type )

◆ NLOHMANN_JSON_HAS_HELPER() [4/4]

nlohmann::detail::NLOHMANN_JSON_HAS_HELPER ( iterator )

◆ operator<()

bool nlohmann::detail::operator<	(	const value_t	lhs,
		const value_t	rhs
	)

inlinenoexcept

comparison operator for JSON types

Returns an ordering that is similar to Python:

order: null < boolean < number < object < array < string
furthermore, each type is not smaller than itself

Since: version 1.0.0

◆ to_json() [1/8]

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

◆ to_json() [2/8]

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
	)

◆ to_json() [3/8]

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

◆ to_json() [4/8]

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

◆ to_json() [5/8]

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

◆ to_json() [6/8]

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

◆ to_json() [7/8]

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
	)

◆ to_json() [8/8]

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
	)

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Data Structures

Typedefs

Enumerations

Functions

Detailed Description

Typedef Documentation

◆ enable_if_t

◆ is_unscoped_enum

◆ uncvref_t

Enumeration Type Documentation

◆ value_t

Function Documentation

◆ from_json() [1/11]

◆ from_json() [2/11]

◆ from_json() [3/11]

◆ from_json() [4/11]

◆ from_json() [5/11]

◆ from_json() [6/11]

◆ from_json() [7/11]

◆ from_json() [8/11]

◆ from_json() [9/11]

◆ from_json() [10/11]

◆ from_json() [11/11]

◆ from_json_array_impl() [1/2]

◆ from_json_array_impl() [2/2]

◆ get_arithmetic_value()

◆ NLOHMANN_JSON_HAS_HELPER() [1/4]

◆ NLOHMANN_JSON_HAS_HELPER() [2/4]

◆ NLOHMANN_JSON_HAS_HELPER() [3/4]

◆ NLOHMANN_JSON_HAS_HELPER() [4/4]

◆ operator<()

◆ to_json() [1/8]

◆ to_json() [2/8]

◆ to_json() [3/8]

◆ to_json() [4/8]

◆ to_json() [5/8]

◆ to_json() [6/8]

◆ to_json() [7/8]

◆ to_json() [8/8]