nlohmann Namespace Reference

namespace for Niels Lohmann More...

Namespaces
namespace	detail
	detail namespace with internal helper functions

Classes
struct	adl_serializer
	default JSONSerializer template argument More...
class	basic_json
	a class to store JSON values More...
class	json_pointer
	JSON Pointer defines a string syntax for identifying a specific value within a JSON document. More...
struct	ordered_map
	a minimal map-like container that preserves insertion order More...
class	byte_container_with_subtype
	an internal type for a backed binary type More...
struct	json_sax
	SAX interface. More...

Typedefs
using	json = basic_json<>
	default specialization
using	ordered_json = basic_json<nlohmann::ordered_map>
	specialization that maintains the insertion order of object keys
using	mapped_type = T
using	Container = std::vector<std::pair<const Key, T>, Allocator>
using	iterator = typename Container::iterator
using	const_iterator = typename Container::const_iterator
using	size_type = typename Container::size_type
using	value_type = typename Container::value_type
template<typename InputIt>
using	require_input_iter

Functions
	NLOHMANN_CAN_CALL_STD_FUNC_IMPL (begin)
	NLOHMANN_CAN_CALL_STD_FUNC_IMPL (end)
*brief create JSON pointer *sa reference_tokens	end ()
*brief append another JSON pointer at the end of this JSON pointer *sa ptr reference_tokens	begin ()
res	pop_back ()
*brief remove last reference token *sa JSON pointer has no	BasicJsonType ()))
return reference_tokens	back ()
static BasicJsonType::size_type	array_index (const std::string &s)
BasicJsonType &	get_and_create (BasicJsonType &j) const
	create and return a reference to the pointed to value
BasicJsonType &	get_unchecked (BasicJsonType *ptr) const
	return a reference to the pointed to value
BasicJsonType &	get_checked (BasicJsonType *ptr) const
const BasicJsonType &	get_unchecked (const BasicJsonType *ptr) const
	return a const reference to the pointed to value
const BasicJsonType &	get_checked (const BasicJsonType *ptr) const
bool	contains (const BasicJsonType *ptr) const
static std::vector< std::string >	split (const std::string &reference_string)
	split the string input to reference tokens
static void	flatten (const std::string &reference_string, const BasicJsonType &value, BasicJsonType &result)
static BasicJsonType	unflatten (const BasicJsonType &value)
bool	operator== (json_pointer const &lhs, json_pointer const &rhs) noexcept
	compares two JSON pointers for equality
bool	operator!= (json_pointer const &lhs, json_pointer const &rhs) noexcept
	compares two JSON pointers for inequality
	ordered_map (const Allocator &alloc=Allocator())
template<class It>
	ordered_map (It first, It last, const Allocator &alloc=Allocator())
	ordered_map (std::initializer_list< T > init, const Allocator &alloc=Allocator())
std::pair< iterator, bool >	emplace (const key_type &key, T &&t)
T &	operator[] (const Key &key)
T &	at (const Key &key)
size_type	erase (const Key &key)
iterator	erase (iterator pos)
iterator	erase (iterator first, iterator last)
size_type	count (const Key &key) const
iterator	find (const Key &key)
std::pair< iterator, bool >	insert (value_type &&value)
std::pair< iterator, bool >	insert (const value_type &value)
template<typename InputIt, typename = require_input_iter<InputIt>>
void	insert (InputIt first, InputIt last)

Variables
*brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document *sa	https
*brief create JSON pointer *sa reference_tokens const std::string &	a
*brief create JSON pointer *sa reference_tokens const std::string const std::string &	b { return a + "/" + detail::escape(b)
return *	this
*brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer *sa const json_pointer &	rhs { return json_pointer(lhs) /= rhs
*brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer *sa std::string	token
*brief create a new JSON pointer by appending the array index token at the end of the JSON pointer *sa std::size_t	array_idx
json_pointer	res = *this
*brief remove last reference token *sa JSON pointer has no	parent
JSON_PRIVATE_UNLESS_TESTED	__pad0__
json_pointer	result = *this
result	reference_tokens = {reference_tokens[0]}
*	ordered_map
class class	Allocator

Detailed Description

namespace to hold default to_json function to see why this is required: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html

See also

https://github.com/nlohmann

Since

version 1.0.0

Typedef Documentation

const_iterator

using nlohmann::const_iterator = typename Container::const_iterator

Definition at line 15999 of file json.hpp.

Container

using nlohmann::Container = std::vector<std::pair<const Key, T>, Allocator>

Definition at line 15997 of file json.hpp.

iterator

using nlohmann::iterator = typename Container::iterator

Definition at line 15998 of file json.hpp.

json

using nlohmann::json = basic_json<>

See also

https://json.nlohmann.me/api/json/

Definition at line 3365 of file json.hpp.

mapped_type

using nlohmann::mapped_type = T

Definition at line 15996 of file json.hpp.

ordered_json

using nlohmann::ordered_json = basic_json<nlohmann::ordered_map>

See also

https://json.nlohmann.me/api/ordered_json/

Definition at line 3374 of file json.hpp.

require_input_iter

template<typename InputIt>

using nlohmann::require_input_iter

Initial value:

 
typename std::enable_if<std::is_convertible<typename std::iterator_traits<InputIt>::iterator_category,
                                            std::input_iterator_tag>::value>::type

Definition at line 16162 of file json.hpp.

size_type

using nlohmann::size_type = typename Container::size_type

Definition at line 16000 of file json.hpp.

value_type

using nlohmann::value_type = typename Container::value_type

Definition at line 16001 of file json.hpp.

Function Documentation

array_index()

BasicJsonType::size_type nlohmann::array_index ( const std::string & s )

staticprivate

Parameters

[in]

s

reference token to be converted into an array index

Returns

integer representation of s

Exceptions

parse_error.106	if an array index begins with '0'
parse_error.109	if an array index begins not with a digit
out_of_range.404	if string s could not be converted to an integer
out_of_range.410	if an array index exceeds size_type

Definition at line 11891 of file json.hpp.

References BasicJsonType(), nlohmann::detail::out_of_range::create(), nlohmann::detail::parse_error::create(), JSON_CATCH, JSON_HEDLEY_UNLIKELY, JSON_THROW, JSON_TRY, and res.

Referenced by nlohmann::detail::binary_writer< basic_json, CharType >::calc_bson_array_size(), contains(), get_and_create(), get_checked(), get_checked(), get_unchecked(), get_unchecked(), and nlohmann::detail::binary_writer< basic_json, CharType >::write_bson_array().

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at()

const T & nlohmann::at

(

const Key &

key

)

Definition at line 16031 of file json.hpp.

References begin(), end(), and JSON_THROW.

Referenced by nlohmann::detail::from_json_tuple_impl_base().

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back()

return reference_tokens nlohmann::back

(

)

References reference_tokens.

BasicJsonType()

JSON_PRIVATE_UNLESS_TESTED JSON pointer has no nlohmann::BasicJsonType

(

)

References nlohmann::detail::out_of_range::create().

Referenced by nlohmann::detail::json_sax_dom_callback_parser< BasicJsonType >::json_sax_dom_callback_parser(), nlohmann::detail::json_sax_dom_parser< BasicJsonType >::json_sax_dom_parser(), array_index(), nlohmann::detail::binary_writer< basic_json, CharType >::calc_bson_element_size(), nlohmann::detail::binary_writer< basic_json, CharType >::calc_bson_entry_header_size(), nlohmann::detail::external_constructor< value_t::array >::construct(), nlohmann::detail::external_constructor< value_t::array >::construct(), nlohmann::detail::external_constructor< value_t::array >::construct(), nlohmann::detail::external_constructor< value_t::array >::construct(), nlohmann::detail::external_constructor< value_t::array >::construct(), nlohmann::detail::external_constructor< value_t::binary >::construct(), nlohmann::detail::external_constructor< value_t::binary >::construct(), nlohmann::detail::external_constructor< value_t::boolean >::construct(), nlohmann::detail::external_constructor< value_t::number_float >::construct(), nlohmann::detail::external_constructor< value_t::number_integer >::construct(), nlohmann::detail::external_constructor< value_t::number_unsigned >::construct(), nlohmann::detail::external_constructor< value_t::object >::construct(), nlohmann::detail::external_constructor< value_t::object >::construct(), nlohmann::detail::external_constructor< value_t::object >::construct(), nlohmann::detail::external_constructor< value_t::string >::construct(), nlohmann::detail::external_constructor< value_t::string >::construct(), nlohmann::detail::external_constructor< value_t::string >::construct(), contains(), nlohmann::detail::invalid_iterator::create(), nlohmann::detail::other_error::create(), nlohmann::detail::out_of_range::create(), nlohmann::detail::parse_error::create(), nlohmann::detail::parse_error::create(), nlohmann::detail::type_error::create(), nlohmann::detail::exception::diagnostics(), nlohmann::detail::serializer< BasicJsonType >::dump(), flatten(), nlohmann::detail::serializer< BasicJsonType >::for(), nlohmann::adl_serializer< ValueType, typename >::from_json(), nlohmann::adl_serializer< ValueType, typename >::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json(), nlohmann::detail::from_json_array_impl(), nlohmann::detail::from_json_array_impl(), nlohmann::detail::from_json_array_impl(), nlohmann::detail::from_json_array_impl(), nlohmann::detail::from_json_inplace_array_impl(), nlohmann::detail::from_json_tuple_impl(), nlohmann::detail::from_json_tuple_impl(), nlohmann::detail::from_json_tuple_impl(), nlohmann::detail::from_json_tuple_impl(), nlohmann::detail::from_json_tuple_impl_base(), get_and_create(), nlohmann::detail::get_arithmetic_value(), nlohmann::detail::binary_reader< basic_json, InputType >::get_bson_binary(), nlohmann::detail::binary_reader< basic_json, InputType >::get_bson_string(), nlohmann::detail::binary_reader< basic_json, InputType >::get_cbor_binary(), nlohmann::detail::binary_reader< basic_json, InputType >::get_cbor_string(), get_checked(), get_checked(), nlohmann::detail::binary_reader< basic_json, InputType >::get_msgpack_string(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_high_precision_number(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_size_type(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_size_value(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_string(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_value(), get_unchecked(), get_unchecked(), nlohmann::detail::json_sax_dom_callback_parser< BasicJsonType >::handle_value(), nlohmann::detail::json_sax_dom_parser< BasicJsonType >::handle_value(), nlohmann::detail::hash(), nlohmann::detail::json_sax_dom_callback_parser< BasicJsonType >::key(), nlohmann::detail::from_json_fn::operator()(), nlohmann::detail::to_json_fn::operator()(), nlohmann::detail::parser< BasicJsonType, InputAdapterType >::parse(), nlohmann::detail::binary_reader< basic_json, InputType >::parse_bson_element_internal(), nlohmann::detail::binary_reader< basic_json, InputType >::parse_cbor_internal(), nlohmann::detail::binary_reader< basic_json, InputType >::parse_msgpack_internal(), nlohmann::detail::binary_reader< basic_json, InputType >::sax_parse(), nlohmann::detail::parser< BasicJsonType, InputAdapterType >::sax_parse(), nlohmann::detail::parser< BasicJsonType, InputAdapterType >::sax_parse_internal(), split(), nlohmann::adl_serializer< ValueType, typename >::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json(), nlohmann::detail::to_json_tuple_impl(), nlohmann::detail::binary_writer< basic_json, CharType >::ubjson_prefix(), nlohmann::detail::binary_reader< basic_json, InputType >::unexpect_eof(), unflatten(), nlohmann::detail::binary_writer< basic_json, CharType >::write_bson(), nlohmann::detail::binary_writer< basic_json, CharType >::write_bson_element(), nlohmann::detail::binary_writer< basic_json, CharType >::write_bson_unsigned(), nlohmann::detail::binary_writer< basic_json, CharType >::write_cbor(), nlohmann::detail::binary_writer< basic_json, CharType >::write_msgpack(), nlohmann::detail::binary_writer< basic_json, CharType >::write_number_with_ubjson_prefix(), and nlohmann::detail::binary_writer< basic_json, CharType >::write_ubjson().

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begin()

*brief append another JSON pointer at the end of this JSON pointer *sa ptr reference_tokens nlohmann::begin

(

)

References reference_tokens.

Referenced by nlohmann::basic_json< nlohmann::ordered_map >::assert_invariant(), at(), nlohmann::detail::external_constructor< value_t::array >::construct(), nlohmann::detail::external_constructor< value_t::object >::construct(), count(), nlohmann::detail::container_input_adapter_factory_impl::container_input_adapter_factory< ContainerType, void_t< decltype(begin(std::declval< ContainerType >()), end(std::declval< ContainerType >()))> >::create(), emplace(), erase(), find(), insert(), and NLOHMANN_CAN_CALL_STD_FUNC_IMPL().

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contains()

bool nlohmann::contains ( const BasicJsonType * ptr ) const

private

Exceptions

parse_error.106	if an array index begins with '0'
parse_error.109	if an array index was not a number

Definition at line 12221 of file json.hpp.

References nlohmann::detail::array, array_index(), BasicJsonType(), nlohmann::detail::binary, nlohmann::detail::boolean, nlohmann::detail::discarded, i, JSON_HEDLEY_UNLIKELY, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, reference_tokens, and nlohmann::detail::string.

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count()

size_type nlohmann::count

(

const Key &

key

)

const

Definition at line 16118 of file json.hpp.

References begin(), and end().

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emplace()

std::pair< iterator, bool > nlohmann::emplace	(	const key_type &	key,
		T &&	t )

Definition at line 16016 of file json.hpp.

References begin(), and end().

Referenced by insert(), and operator[]().

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end()

*brief append another JSON pointer at the end of this JSON pointer *sa ptr reference_tokens ptr reference_tokens nlohmann::end

(

)

References reference_tokens.

Referenced by nlohmann::basic_json< nlohmann::ordered_map >::assert_invariant(), at(), nlohmann::detail::external_constructor< value_t::array >::construct(), nlohmann::detail::external_constructor< value_t::object >::construct(), count(), nlohmann::detail::container_input_adapter_factory_impl::container_input_adapter_factory< ContainerType, void_t< decltype(begin(std::declval< ContainerType >()), end(std::declval< ContainerType >()))> >::create(), emplace(), erase(), find(), nlohmann::detail::from_json_array_impl(), nlohmann::detail::from_json_array_impl(), insert(), and NLOHMANN_CAN_CALL_STD_FUNC_IMPL().

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erase() [1/3]

size_type nlohmann::erase

(

const Key &

key

)

Definition at line 16053 of file json.hpp.

References begin(), and end().

Referenced by erase().

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erase() [2/3]

iterator nlohmann::erase	(	iterator	first,
		iterator	last )

Definition at line 16071 of file json.hpp.

erase() [3/3]

iterator nlohmann::erase

(

iterator

pos

)

Definition at line 16069 of file json.hpp.

References erase().

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find()

const_iterator nlohmann::find

(

const Key &

key

)

Definition at line 16128 of file json.hpp.

References begin(), and end().

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flatten()

void nlohmann::flatten ( const std::string & reference_string, const BasicJsonType & value, BasicJsonType & result )

staticprivate

Parameters

[in]	reference_string	the reference string to the current value
[in]	value	the value to consider
[in,out]	result	the result object to insert values to

Note

Empty objects or arrays are flattened to null.

Definition at line 12365 of file json.hpp.

References nlohmann::detail::array, BasicJsonType(), nlohmann::detail::binary, nlohmann::detail::boolean, nlohmann::detail::discarded, nlohmann::detail::escape(), flatten(), i, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, result, and nlohmann::detail::string.

Referenced by flatten().

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get_and_create()

BasicJsonType & nlohmann::get_and_create ( BasicJsonType & j ) const

private

@complexity Linear in the number of reference tokens.

Exceptions

parse_error.109	if array index is not a number
type_error.313	if value cannot be unflattened

Definition at line 11953 of file json.hpp.

References nlohmann::detail::array, array_index(), BasicJsonType(), nlohmann::detail::binary, nlohmann::detail::boolean, nlohmann::detail::type_error::create(), nlohmann::detail::discarded, JSON_THROW, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, reference_tokens, result, and nlohmann::detail::string.

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get_checked() [1/2]

BasicJsonType & nlohmann::get_checked ( BasicJsonType * ptr ) const

private

Exceptions

parse_error.106	if an array index begins with '0'
parse_error.109	if an array index was not a number
out_of_range.402	if the array index '-' is used
out_of_range.404	if the JSON pointer can not be resolved

Definition at line 12078 of file json.hpp.

References nlohmann::detail::array, array_index(), BasicJsonType(), nlohmann::detail::binary, nlohmann::detail::boolean, nlohmann::detail::out_of_range::create(), nlohmann::detail::discarded, JSON_HEDLEY_UNLIKELY, JSON_THROW, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, reference_tokens, and nlohmann::detail::string.

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get_checked() [2/2]

const BasicJsonType & nlohmann::get_checked ( const BasicJsonType * ptr ) const

private

Exceptions

parse_error.106	if an array index begins with '0'
parse_error.109	if an array index was not a number
out_of_range.402	if the array index '-' is used
out_of_range.404	if the JSON pointer can not be resolved

Definition at line 12177 of file json.hpp.

References nlohmann::detail::array, array_index(), BasicJsonType(), nlohmann::detail::binary, nlohmann::detail::boolean, nlohmann::detail::out_of_range::create(), nlohmann::detail::discarded, JSON_HEDLEY_UNLIKELY, JSON_THROW, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, reference_tokens, and nlohmann::detail::string.

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get_unchecked() [1/2]

BasicJsonType & nlohmann::get_unchecked ( BasicJsonType * ptr ) const

private

Note

This version does not throw if a value is not present, but tries to create nested values instead. For instance, calling this function with pointer "/this/that" on a null value is equivalent to calling operator[]("this").operator[]("that") on that value, effectively changing the null value to an object.

Parameters

[in]

ptr

a JSON value

Returns

reference to the JSON value pointed to by the JSON pointer

@complexity Linear in the length of the JSON pointer.

Exceptions

parse_error.106	if an array index begins with '0'
parse_error.109	if an array index was not a number
out_of_range.404	if the JSON pointer can not be resolved

Definition at line 12024 of file json.hpp.

References nlohmann::detail::array, array_index(), BasicJsonType(), nlohmann::detail::binary, nlohmann::detail::boolean, nlohmann::detail::out_of_range::create(), nlohmann::detail::discarded, JSON_THROW, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, reference_tokens, nlohmann::detail::string, and x.

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get_unchecked() [2/2]

const BasicJsonType & nlohmann::get_unchecked ( const BasicJsonType * ptr ) const

private

Parameters

[in]

ptr

a JSON value

Returns

const reference to the JSON value pointed to by the JSON pointer

Exceptions

parse_error.106	if an array index begins with '0'
parse_error.109	if an array index was not a number
out_of_range.402	if the array index '-' is used
out_of_range.404	if the JSON pointer can not be resolved

Definition at line 12131 of file json.hpp.

References nlohmann::detail::array, array_index(), BasicJsonType(), nlohmann::detail::binary, nlohmann::detail::boolean, nlohmann::detail::out_of_range::create(), nlohmann::detail::discarded, JSON_HEDLEY_UNLIKELY, JSON_THROW, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, reference_tokens, and nlohmann::detail::string.

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insert() [1/3]

std::pair< iterator, bool > nlohmann::insert

(

const value_type &

value

)

Definition at line 16150 of file json.hpp.

References begin(), and end().

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insert() [2/3]

template<typename InputIt, typename = require_input_iter<InputIt>>

void nlohmann::insert	(	InputIt	first,
		InputIt	last )

Definition at line 16167 of file json.hpp.

References insert().

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insert() [3/3]

std::pair< iterator, bool > nlohmann::insert

(

value_type &&

value

)

Definition at line 16148 of file json.hpp.

References emplace().

Referenced by insert().

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NLOHMANN_CAN_CALL_STD_FUNC_IMPL() [1/2]

nlohmann::NLOHMANN_CAN_CALL_STD_FUNC_IMPL

(

begin

)

References begin().

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NLOHMANN_CAN_CALL_STD_FUNC_IMPL() [2/2]

nlohmann::NLOHMANN_CAN_CALL_STD_FUNC_IMPL

(

end

)

References end().

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operator!=()

friend bool nlohmann::operator!= ( json_pointer const & lhs, json_pointer const & rhs )

privatenoexcept

Parameters

[in]	lhs	JSON pointer to compare
[in]	rhs	JSON pointer to compare

Returns

whether lhs is not equal rhs

@complexity Linear in the length of the JSON pointer

@exceptionsafety No-throw guarantee: this function never throws exceptions.

Definition at line 12471 of file json.hpp.

References rhs.

operator==()

friend bool nlohmann::operator== ( json_pointer const & lhs, json_pointer const & rhs )

privatenoexcept

Parameters

[in]	lhs	JSON pointer to compare
[in]	rhs	JSON pointer to compare

Returns

whether lhs is equal to rhs

@complexity Linear in the length of the JSON pointer

@exceptionsafety No-throw guarantee: this function never throws exceptions.

Definition at line 12455 of file json.hpp.

References rhs.

operator[]()

const T & nlohmann::operator[]

(

const Key &

key

)

Definition at line 16027 of file json.hpp.

References emplace().

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ordered_map() [1/3]

nlohmann::ordered_map

(

const Allocator &

alloc = Allocator()

)

Definition at line 16005 of file json.hpp.

References Allocator.

ordered_map() [2/3]

template<class It>

nlohmann::ordered_map	(	It	first,
		It	last,
		const Allocator &	alloc = Allocator() )

Definition at line 16009 of file json.hpp.

References Allocator.

ordered_map() [3/3]

nlohmann::ordered_map	(	std::initializer_list< T >	init,
		const Allocator &	alloc = Allocator() )

Definition at line 16012 of file json.hpp.

References Allocator.

pop_back()

reference_tokens nlohmann::pop_back

(

)

References res.

split()

std::vector< std::string > nlohmann::split ( const std::string & reference_string )

staticprivate

Note

This function is only called by the json_pointer constructor. All exceptions below are documented there.

Exceptions

parse_error.107	if the pointer is not empty or begins with '/'
parse_error.108	if character '~' is not followed by '0' or '1'

Definition at line 12298 of file json.hpp.

References BasicJsonType(), nlohmann::detail::parse_error::create(), JSON_ASSERT, JSON_HEDLEY_UNLIKELY, JSON_THROW, result, and nlohmann::detail::unescape().

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unflatten()

BasicJsonType nlohmann::unflatten ( const BasicJsonType & value )

staticprivate

Parameters

[in]

value

flattened JSON

Returns

unflattened JSON

Exceptions

parse_error.109	if array index is not a number
type_error.314	if value is not an object
type_error.315	if object values are not primitive
type_error.313	if value cannot be unflattened

Definition at line 12420 of file json.hpp.

References BasicJsonType(), nlohmann::detail::type_error::create(), JSON_HEDLEY_UNLIKELY, JSON_THROW, and result.

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Variable Documentation

__pad0__

JSON_PRIVATE_UNLESS_TESTED nlohmann::__pad0__

private

Definition at line 11933 of file json.hpp.

a

*brief create JSON pointer *sa reference_tokens const std::string& nlohmann::a

Definition at line 11787 of file json.hpp.

Referenced by nlohmann::detail::exception::diagnostics().

Allocator

class class nlohmann::Allocator

Initial value:

                        = std::allocator<std::pair<const Key, T>>>
struct ordered_map : std::vector<std::pair<const Key, T>

Definition at line 15991 of file json.hpp.

Referenced by ordered_map(), ordered_map(), and ordered_map().

array_idx

* brief create a new JSON pointer by appending the array index token at the end of the JSON pointer* sa std::size_t nlohmann::array_idx

Initial value:

{
        return json_pointer(lhs) /= array_idx

Definition at line 11828 of file json.hpp.

b

*brief create JSON pointer *sa reference_tokens const std::string const std::string& nlohmann::b { return a + "/" + detail::escape(b)

Definition at line 11787 of file json.hpp.

Referenced by nlohmann::byte_container_with_subtype< BinaryType >::byte_container_with_subtype(), nlohmann::byte_container_with_subtype< BinaryType >::byte_container_with_subtype(), nlohmann::byte_container_with_subtype< BinaryType >::byte_container_with_subtype(), nlohmann::byte_container_with_subtype< BinaryType >::byte_container_with_subtype(), nlohmann::detail::span_input_adapter::span_input_adapter(), nlohmann::detail::external_constructor< value_t::binary >::construct(), nlohmann::detail::external_constructor< value_t::binary >::construct(), nlohmann::detail::external_constructor< value_t::boolean >::construct(), nlohmann::detail::exception::diagnostics(), nlohmann::detail::from_json(), nlohmann::detail::input_adapter(), nlohmann::detail::binary_reader< basic_json, InputType >::parse_cbor_internal(), nlohmann::detail::binary_reader< basic_json, InputType >::parse_msgpack_internal(), nlohmann::detail::to_json(), and nlohmann::detail::to_json().

https

*brief user defined to_string function for JSON values *sa nlohmann::https

Definition at line 11767 of file json.hpp.

ordered_map

* nlohmann::ordered_map

Definition at line 15987 of file json.hpp.

parent

JSON_PRIVATE_UNLESS_TESTED JSON pointer has no nlohmann::parent

Definition at line 11851 of file json.hpp.

reference_tokens

*the reference tokens std::vector< std::string > nlohmann::reference_tokens = {reference_tokens[0]}

private

Definition at line 11940 of file json.hpp.

Referenced by back(), begin(), contains(), end(), get_and_create(), get_checked(), get_checked(), get_unchecked(), and get_unchecked().

res

return nlohmann::res = *this

Definition at line 11841 of file json.hpp.

Referenced by array_index(), nlohmann::detail::input_stream_adapter::get_character(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_high_precision_number(), pop_back(), and nlohmann::detail::parser< BasicJsonType, InputAdapterType >::sax_parse_internal().

result

return nlohmann::result = *this

private

Definition at line 11939 of file json.hpp.

Referenced by nlohmann::detail::binary_writer< basic_json, CharType >::calc_bson_array_size(), nlohmann::detail::binary_writer< basic_json, CharType >::calc_bson_object_size(), flatten(), get_and_create(), nlohmann::detail::binary_reader< basic_json, InputType >::get_binary(), nlohmann::detail::binary_reader< basic_json, InputType >::get_bson_binary(), nlohmann::detail::binary_reader< basic_json, InputType >::get_bson_string(), nlohmann::detail::binary_reader< basic_json, InputType >::get_cbor_binary(), nlohmann::detail::binary_reader< basic_json, InputType >::get_cbor_string(), nlohmann::detail::iterator_input_adapter< iterator_type >::get_character(), nlohmann::detail::binary_reader< basic_json, InputType >::get_msgpack_binary(), nlohmann::detail::binary_reader< basic_json, InputType >::get_msgpack_string(), nlohmann::detail::binary_reader< basic_json, InputType >::get_number(), nlohmann::detail::binary_reader< basic_json, InputType >::get_string(), nlohmann::detail::lexer< BasicJsonType, InputAdapterType >::get_token_string(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_size_type(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_size_value(), nlohmann::detail::binary_reader< basic_json, InputType >::get_ubjson_string(), nlohmann::detail::iter_impl< typename std::conditional< std::is_const< BasicJsonType >::value, typename std::remove_const< BasicJsonType >::type, const BasicJsonType >::type >::operator+(), nlohmann::detail::iter_impl< typename std::conditional< std::is_const< BasicJsonType >::value, typename std::remove_const< BasicJsonType >::type, const BasicJsonType >::type >::operator+, nlohmann::detail::primitive_iterator_t::operator+(), nlohmann::detail::iter_impl< typename std::conditional< std::is_const< BasicJsonType >::value, typename std::remove_const< BasicJsonType >::type, const BasicJsonType >::type >::operator++(), nlohmann::detail::primitive_iterator_t::operator++(), nlohmann::detail::iter_impl< typename std::conditional< std::is_const< BasicJsonType >::value, typename std::remove_const< BasicJsonType >::type, const BasicJsonType >::type >::operator-(), nlohmann::detail::iter_impl< typename std::conditional< std::is_const< BasicJsonType >::value, typename std::remove_const< BasicJsonType >::type, const BasicJsonType >::type >::operator--(), nlohmann::detail::primitive_iterator_t::operator--(), nlohmann::detail::parser< BasicJsonType, InputAdapterType >::parse(), nlohmann::detail::binary_reader< basic_json, InputType >::sax_parse(), nlohmann::detail::parser< BasicJsonType, InputAdapterType >::sax_parse(), split(), nlohmann::detail::binary_writer< basic_json, CharType >::to_char_type(), and unflatten().

rhs

* brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer* sa const json_pointer& nlohmann::rhs { return json_pointer(lhs) /= rhs

Definition at line 11816 of file json.hpp.

Referenced by nlohmann::detail::input_stream_adapter::input_stream_adapter(), nlohmann::byte_container_with_subtype< BinaryType >::operator!=(), operator!=(), nlohmann::detail::primitive_iterator_t::operator-, nlohmann::detail::operator<(), nlohmann::detail::primitive_iterator_t::operator<, nlohmann::byte_container_with_subtype< BinaryType >::operator==(), nlohmann::detail::primitive_iterator_t::operator==, and operator==().

this

return * nlohmann::this

Definition at line 11799 of file json.hpp.

token

* brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer* sa std::string nlohmann::token

Initial value:

{
        return json_pointer(lhs) /= std::move(token)

Definition at line 11821 of file json.hpp.