nlohmann::detail Namespace Reference

detail namespace with internal helper functions More...

Namespaces
namespace	dtoa_impl
	implements the Grisu2 algorithm for binary to decimal floating-point conversion.

Classes
struct	detector
struct	detector< Default, void_t< Op< Args... > >, Op, Args... >
class	exception
	general exception of the basic_json class More...
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 >
class	file_input_adapter
struct	has_from_json
struct	has_from_json< BasicJsonType, T, enable_if_t< not is_basic_json< T >::value > >
struct	has_non_default_from_json
struct	has_non_default_from_json< BasicJsonType, T, enable_if_t< not is_basic_json< T >::value > >
struct	has_to_json
struct	has_to_json< BasicJsonType, T, enable_if_t< not is_basic_json< T >::value > >
struct	index_sequence
class	input_adapter
struct	input_adapter_protocol
	abstract input adapter interface More...
class	input_buffer_adapter
	input adapter for buffer input More...
class	input_stream_adapter
struct	internal_iterator
	an iterator value More...
class	invalid_iterator
	exception indicating errors with iterators More...
struct	is_basic_json
struct	is_basic_json< NLOHMANN_BASIC_JSON_TPL >
struct	is_compatible_array_type
struct	is_compatible_array_type_impl
struct	is_compatible_array_type_impl< BasicJsonType, CompatibleArrayType, enable_if_t< is_detected< value_type_t, CompatibleArrayType >::value and is_detected< iterator_t, CompatibleArrayType >::value and not is_iterator_traits< iterator_traits< CompatibleArrayType > >::value > >
struct	is_compatible_integer_type
struct	is_compatible_integer_type_impl
struct	is_compatible_integer_type_impl< RealIntegerType, CompatibleNumberIntegerType, enable_if_t< std::is_integral< RealIntegerType >::value and std::is_integral< CompatibleNumberIntegerType >::value and not std::is_same< bool, CompatibleNumberIntegerType >::value > >
struct	is_compatible_object_type
struct	is_compatible_object_type_impl
struct	is_compatible_object_type_impl< BasicJsonType, CompatibleObjectType, enable_if_t< is_detected< mapped_type_t, CompatibleObjectType >::value and is_detected< key_type_t, CompatibleObjectType >::value > >
struct	is_compatible_string_type
struct	is_compatible_string_type_impl
struct	is_compatible_string_type_impl< BasicJsonType, CompatibleStringType, enable_if_t< is_detected_exact< typename BasicJsonType::string_t::value_type, value_type_t, CompatibleStringType >::value > >
struct	is_compatible_type
struct	is_compatible_type_impl
struct	is_compatible_type_impl< BasicJsonType, CompatibleType, enable_if_t< is_complete_type< CompatibleType >::value > >
struct	is_complete_type
struct	is_complete_type< T, decltype(void(sizeof(T)))>
struct	is_constructible_array_type
struct	is_constructible_array_type_impl
struct	is_constructible_array_type_impl< BasicJsonType, ConstructibleArrayType, enable_if_t< not std::is_same< ConstructibleArrayType, typename BasicJsonType::value_type >::value and is_detected< value_type_t, ConstructibleArrayType >::value and is_detected< iterator_t, ConstructibleArrayType >::value and is_complete_type< detected_t< value_type_t, ConstructibleArrayType > >::value > >
struct	is_constructible_array_type_impl< BasicJsonType, ConstructibleArrayType, enable_if_t< std::is_same< ConstructibleArrayType, typename BasicJsonType::value_type >::value > >
struct	is_constructible_object_type
struct	is_constructible_object_type_impl
struct	is_constructible_object_type_impl< BasicJsonType, ConstructibleObjectType, enable_if_t< is_detected< mapped_type_t, ConstructibleObjectType >::value and is_detected< key_type_t, ConstructibleObjectType >::value > >
struct	is_constructible_string_type
struct	is_constructible_string_type_impl
struct	is_constructible_string_type_impl< BasicJsonType, ConstructibleStringType, enable_if_t< is_detected_exact< typename BasicJsonType::string_t::value_type, value_type_t, ConstructibleStringType >::value > >
struct	is_iterator_traits
struct	is_iterator_traits< iterator_traits< T > >
struct	is_sax
struct	is_sax_static_asserts
class	iter_impl
	a template for a bidirectional iterator for the basic_json class This class implements a both iterators (iterator and const_iterator) for the basic_json class. More...
struct	iterator_traits
struct	iterator_traits< T *, enable_if_t< std::is_object< T >::value > >
struct	iterator_traits< T, enable_if_t< !std::is_pointer< T >::value > >
struct	iterator_types
struct	iterator_types< It, void_t< typename It::difference_type, typename It::value_type, typename It::pointer, typename It::reference, typename It::iterator_category > >
class	json_sax_acceptor
class	json_sax_dom_callback_parser
class	json_sax_dom_parser
	SAX implementation to create a JSON value from SAX events. More...
struct	make_index_sequence
struct	make_index_sequence< 0 >
struct	make_index_sequence< 1 >
struct	make_void
struct	merge_and_renumber
struct	merge_and_renumber< index_sequence< I1... >, index_sequence< I2... > >
struct	nonesuch
class	other_error
	exception indicating other library errors More...
class	out_of_range
	exception indicating access out of the defined range More...
class	output_adapter
struct	output_adapter_protocol
	abstract output adapter interface More...
class	output_stream_adapter
	output adapter for output streams More...
class	output_string_adapter
	output adapter for basic_string More...
class	output_vector_adapter
	output adapter for byte vectors More...
class	parse_error
	exception indicating a parse error More...
class	parser
	syntax analysis More...
struct	position_t
	struct to capture the start position of the current token More...
class	primitive_iterator_t
struct	priority_tag
struct	priority_tag< 0 >
class	serializer
struct	static_const
struct	to_json_fn
class	type_error
	exception indicating executing a member function with a wrong type More...
class	wide_string_input_adapter
struct	wide_string_input_helper
struct	wide_string_input_helper< WideStringType, 2 >

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... Ts>
using	index_sequence_for = make_index_sequence< sizeof...(Ts)>
template<typename ... Ts>
using	void_t = typename make_void< Ts... >::type
template<template< class... > class Op, class... Args>
using	is_detected = typename detector< nonesuch, void, Op, Args... >::value_t
template<template< class... > class Op, class... Args>
using	detected_t = typename detector< nonesuch, void, Op, Args... >::type
template<class Default , template< class... > class Op, class... Args>
using	detected_or = detector< Default, void, Op, Args... >
template<class Default , template< class... > class Op, class... Args>
using	detected_or_t = typename detected_or< Default, Op, Args... >::type
template<class Expected , template< class... > class Op, class... Args>
using	is_detected_exact = std::is_same< Expected, detected_t< Op, Args... > >
template<class To , template< class... > class Op, class... Args>
using	is_detected_convertible = std::is_convertible< detected_t< Op, Args... >, To >
template<typename T >
using	mapped_type_t = typename T::mapped_type
template<typename T >
using	key_type_t = typename T::key_type
template<typename T >
using	value_type_t = typename T::value_type
template<typename T >
using	difference_type_t = typename T::difference_type
template<typename T >
using	pointer_t = typename T::pointer
template<typename T >
using	reference_t = typename T::reference
template<typename T >
using	iterator_category_t = typename T::iterator_category
template<typename T >
using	iterator_t = typename T::iterator
template<typename T , typename... Args>
using	to_json_function = decltype(T::to_json(std::declval< Args >()...))
template<typename T , typename... Args>
using	from_json_function = decltype(T::from_json(std::declval< Args >()...))
template<typename T , typename U >
using	get_template_function = decltype(std::declval< T >().template get< U >())
using	input_adapter_t = std::shared_ptr< input_adapter_protocol >
	a type to simplify interfaces
template<typename T >
using	null_function_t = decltype(std::declval< T & >().null())
template<typename T >
using	boolean_function_t = decltype(std::declval< T & >().boolean(std::declval< bool >()))
template<typename T , typename Integer >
using	number_integer_function_t = decltype(std::declval< T & >().number_integer(std::declval< Integer >()))
template<typename T , typename Unsigned >
using	number_unsigned_function_t = decltype(std::declval< T & >().number_unsigned(std::declval< Unsigned >()))
template<typename T , typename Float , typename String >
using	number_float_function_t = decltype(std::declval< T & >().number_float(std::declval< Float >(), std::declval< const String & >()))
template<typename T , typename String >
using	string_function_t = decltype(std::declval< T & >().string(std::declval< String & >()))
template<typename T >
using	start_object_function_t = decltype(std::declval< T & >().start_object(std::declval< std::size_t >()))
template<typename T , typename String >
using	key_function_t = decltype(std::declval< T & >().key(std::declval< String & >()))
template<typename T >
using	end_object_function_t = decltype(std::declval< T & >().end_object())
template<typename T >
using	start_array_function_t = decltype(std::declval< T & >().start_array(std::declval< std::size_t >()))
template<typename T >
using	end_array_function_t = decltype(std::declval< T & >().end_array())
template<typename T , typename Exception >
using	parse_error_function_t = decltype(std::declval< T & >().parse_error(std::declval< std::size_t >(), std::declval< const std::string & >(), std::declval< const Exception & >()))
template<typename CharType >
using	output_adapter_t = std::shared_ptr< output_adapter_protocol< CharType > >
	a type to simplify interfaces

Enumerations
enum class	input_format_t {   json , cbor , msgpack , ubjson ,   bson }
	the supported input formats
enum class	error_handler_t { strict , replace , ignore }
	how to treat decoding errors More...

Functions
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 >
void	to_json (BasicJsonType &j, typename BasicJsonType::string_t &&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 EnumType , enable_if_t< std::is_enum< EnumType >::value, int > = 0>
void	to_json (BasicJsonType &j, EnumType e) noexcept
template<typename BasicJsonType >
void	to_json (BasicJsonType &j, const std::vector< bool > &e)
template<typename BasicJsonType , typename CompatibleArrayType , enable_if_t< is_compatible_array_type< BasicJsonType, CompatibleArrayType >::value and not is_compatible_object_type< BasicJsonType, CompatibleArrayType >::value and not is_compatible_string_type< BasicJsonType, CompatibleArrayType >::value and not is_basic_json< CompatibleArrayType >::value, int > = 0>
void	to_json (BasicJsonType &j, const CompatibleArrayType &arr)
template<typename BasicJsonType , typename T , enable_if_t< std::is_convertible< T, BasicJsonType >::value, int > = 0>
void	to_json (BasicJsonType &j, const std::valarray< T > &arr)
template<typename BasicJsonType >
void	to_json (BasicJsonType &j, typename BasicJsonType::array_t &&arr)
template<typename BasicJsonType , typename CompatibleObjectType , enable_if_t< is_compatible_object_type< BasicJsonType, CompatibleObjectType >::value and not is_basic_json< CompatibleObjectType >::value, int > = 0>
void	to_json (BasicJsonType &j, const CompatibleObjectType &obj)
template<typename BasicJsonType >
void	to_json (BasicJsonType &j, typename BasicJsonType::object_t &&obj)
template<typename BasicJsonType , typename T , std::size_t N, enable_if_t< not std::is_constructible< typename BasicJsonType::string_t, const T(&)[N]>::value, int > = 0>
void	to_json (BasicJsonType &j, const T(&arr)[N])
template<typename BasicJsonType , typename... Args>
void	to_json (BasicJsonType &j, const std::pair< Args... > &p)
template<typename BasicJsonType , typename T , enable_if_t< std::is_same< T, iteration_proxy_value< typename BasicJsonType::iterator > >::value, int > = 0>
void	to_json (BasicJsonType &j, const T &b)
template<typename BasicJsonType , typename Tuple , std::size_t... Idx>
void	to_json_tuple_impl (BasicJsonType &j, const Tuple &t, index_sequence< Idx... >)
template<typename BasicJsonType , typename... Args>
void	to_json (BasicJsonType &j, const std::tuple< Args... > &t)

Detailed Description

detail namespace with internal helper functions

This namespace collects functions that should not be exposed, implementations of some basic_json methods, and meta-programming helpers.

Since

version 2.1.0

Enumeration Type Documentation

error_handler_t

enum class nlohmann::detail::error_handler_t

strong

how to treat decoding errors

Enumerator
strict	throw a type_error exception in case of invalid UTF-8
replace	replace invalid UTF-8 sequences with U+FFFD
ignore	ignore invalid UTF-8 sequences