SAX implementation to create a JSON value from SAX events. More...

#include <json.hpp>

Public Types
using	binary_t = typename BasicJsonType::binary_t
using	number_float_t = typename BasicJsonType::number_float_t
using	number_integer_t = typename BasicJsonType::number_integer_t
using	number_unsigned_t = typename BasicJsonType::number_unsigned_t
using	string_t = typename BasicJsonType::string_t

Public Member Functions
bool	binary (binary_t &val)
bool	boolean (bool val)
bool	end_array ()
bool	end_object ()
constexpr bool	is_errored () const
	json_sax_dom_parser (BasicJsonType &r, const bool allow_exceptions_=true)
	json_sax_dom_parser (const json_sax_dom_parser &)=delete
	json_sax_dom_parser (json_sax_dom_parser &&)=default
bool	key (string_t &val)
bool	null ()
bool	number_float (number_float_t val, const string_t &)
bool	number_integer (number_integer_t val)
bool	number_unsigned (number_unsigned_t val)
json_sax_dom_parser &	operator= (const json_sax_dom_parser &)=delete
json_sax_dom_parser &	operator= (json_sax_dom_parser &&)=default
template<class Exception>
bool	parse_error (std::size_t, const std::string &, const Exception &ex)
bool	start_array (std::size_t len)
bool	start_object (std::size_t len)
bool	string (string_t &val)
	~json_sax_dom_parser ()=default

Private Member Functions
template<typename Value>
JSON_HEDLEY_RETURNS_NON_NULL BasicJsonType *	handle_value (Value &&v)

Private Attributes
const bool	allow_exceptions = true
	whether to throw exceptions in case of errors
bool	errored = false
	whether a syntax error occurred
BasicJsonType *	object_element = nullptr
	helper to hold the reference for the next object element
std::vector< BasicJsonType * >	ref_stack {}
	stack to model hierarchy of values
BasicJsonType &	root
	the parsed JSON value

Detailed Description

template<typename BasicJsonType>
class nlohmann::detail::json_sax_dom_parser< BasicJsonType >

SAX implementation to create a JSON value from SAX events.

This class implements the json_sax interface and processes the SAX events to create a JSON value which makes it basically a DOM parser. The structure or hierarchy of the JSON value is managed by the stack ref_stack which contains a pointer to the respective array or object for each recursion depth.

After successful parsing, the value that is passed by reference to the constructor contains the parsed value.

Template Parameters

BasicJsonType the JSON type

Definition at line 5848 of file json.hpp.

Member Typedef Documentation

◆ binary_t

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::binary_t = typename BasicJsonType::binary_t

Definition at line 5855 of file json.hpp.

◆ number_float_t

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_float_t = typename BasicJsonType::number_float_t

Definition at line 5853 of file json.hpp.

◆ number_integer_t

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_integer_t = typename BasicJsonType::number_integer_t

Definition at line 5851 of file json.hpp.

◆ number_unsigned_t

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_unsigned_t = typename BasicJsonType::number_unsigned_t

Definition at line 5852 of file json.hpp.

◆ string_t

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::string_t = typename BasicJsonType::string_t

Definition at line 5854 of file json.hpp.

Constructor & Destructor Documentation

◆ json_sax_dom_parser() [1/3]

template<typename BasicJsonType>

nlohmann::detail::json_sax_dom_parser< BasicJsonType >::json_sax_dom_parser	(	BasicJsonType &	r,
		const bool	allow_exceptions_ = true )

inlineexplicit

Parameters

[in,out]	r	reference to a JSON value that is manipulated while parsing
[in]	allow_exceptions_	whether parse errors yield exceptions

Definition at line 5862 of file json.hpp.

References allow_exceptions, nlohmann::BasicJsonType(), and root.

Referenced by json_sax_dom_parser(), json_sax_dom_parser(), operator=(), and operator=().

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◆ json_sax_dom_parser() [2/3]

template<typename BasicJsonType>

nlohmann::detail::json_sax_dom_parser< BasicJsonType >::json_sax_dom_parser ( const json_sax_dom_parser< BasicJsonType > & )

delete

References json_sax_dom_parser().

◆ json_sax_dom_parser() [3/3]

template<typename BasicJsonType>

nlohmann::detail::json_sax_dom_parser< BasicJsonType >::json_sax_dom_parser ( json_sax_dom_parser< BasicJsonType > && )

default

References json_sax_dom_parser().

◆ ~json_sax_dom_parser()

template<typename BasicJsonType>

nlohmann::detail::json_sax_dom_parser< BasicJsonType >::~json_sax_dom_parser ( )

default

Member Function Documentation

◆ binary()

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::binary ( binary_t & val )

inline

Definition at line 5909 of file json.hpp.

References handle_value().

◆ boolean()

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::boolean ( bool val )

inline

Definition at line 5879 of file json.hpp.

References handle_value().

◆ end_array()

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::end_array ( )

inline

Definition at line 5953 of file json.hpp.

References ref_stack.

◆ end_object()

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::end_object ( )

inline

Definition at line 5934 of file json.hpp.

References ref_stack.

◆ handle_value()

template<typename BasicJsonType>

template<typename Value>

JSON_HEDLEY_RETURNS_NON_NULL BasicJsonType * nlohmann::detail::json_sax_dom_parser< BasicJsonType >::handle_value ( Value && v )

inlineprivate

Invariant: If the ref stack is empty, then the passed value will be the new root.; If the ref stack contains a value, then it is an array or an object to which we can add elements

Definition at line 5987 of file json.hpp.

References nlohmann::BasicJsonType(), JSON_ASSERT, object_element, ref_stack, and root.

Referenced by binary(), boolean(), null(), number_float(), number_integer(), number_unsigned(), start_array(), start_object(), and string().

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