SAX interface. More...

Public Types
using	number_integer_t = typename BasicJsonType::number_integer_t
	type for (signed) integers More...

using	number_unsigned_t = typename BasicJsonType::number_unsigned_t
	type for unsigned integers More...

using	number_float_t = typename BasicJsonType::number_float_t
	type for floating-point numbers More...

using	string_t = typename BasicJsonType::string_t
	type for strings More...

Public Member Functions
virtual bool	null ()=0
	a null value was read More...

virtual bool	boolean (bool val)=0
	a boolean value was read More...

virtual bool	number_integer (number_integer_t val)=0
	an integer number was read More...

virtual bool	number_unsigned (number_unsigned_t val)=0
	an unsigned integer number was read More...

virtual bool	number_float (number_float_t val, const string_t &s)=0
	an floating-point number was read More...

virtual bool	string (string_t &val)=0
	a string was read More...

virtual bool	start_object (std::size_t elements)=0
	the beginning of an object was read More...

virtual bool	key (string_t &val)=0
	an object key was read More...

virtual bool	end_object ()=0
	the end of an object was read More...

virtual bool	start_array (std::size_t elements)=0
	the beginning of an array was read More...

virtual bool	end_array ()=0
	the end of an array was read More...

virtual bool	parse_error (std::size_t position, const std::string &last_token, const detail::exception &ex)=0
	a parse error occurred More...

virtual	~json_sax ()=default

Detailed Description

template<typename BasicJsonType>
struct nlohmann::json_sax< BasicJsonType >

SAX interface.

This class describes the SAX interface used by nlohmann::json::sax_parse. Each function is called in different situations while the input is parsed. The boolean return value informs the parser whether to continue processing the input.

Member Typedef Documentation

◆ number_float_t

template<typename BasicJsonType >

using nlohmann::json_sax< BasicJsonType >::number_float_t = typename BasicJsonType::number_float_t

type for floating-point numbers

◆ number_integer_t

template<typename BasicJsonType >

using nlohmann::json_sax< BasicJsonType >::number_integer_t = typename BasicJsonType::number_integer_t

type for (signed) integers

◆ number_unsigned_t

template<typename BasicJsonType >

using nlohmann::json_sax< BasicJsonType >::number_unsigned_t = typename BasicJsonType::number_unsigned_t

type for unsigned integers

◆ string_t

template<typename BasicJsonType >

using nlohmann::json_sax< BasicJsonType >::string_t = typename BasicJsonType::string_t

type for strings

Constructor & Destructor Documentation

◆ ~json_sax()

template<typename BasicJsonType >

virtual nlohmann::json_sax< BasicJsonType >::~json_sax ( )

virtualdefault

Member Function Documentation

◆ boolean()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::boolean ( bool val )

pure virtual

a boolean value was read

Parameters

[in] val boolean value

Returns: whether parsing should proceed

◆ end_array()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::end_array ( )

pure virtual

the end of an array was read

Returns: whether parsing should proceed

◆ end_object()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::end_object ( )

pure virtual

the end of an object was read

Returns: whether parsing should proceed

◆ key()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::key ( string_t & val )

pure virtual

an object key was read

Parameters

[in] val object key

Returns: whether parsing should proceed

Note: It is safe to move the passed string.

◆ null()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::null ( )

pure virtual

a null value was read

Returns: whether parsing should proceed

◆ number_float()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::number_float	(	number_float_t	val,
		const string_t &	s
	)

pure virtual

an floating-point number was read

Parameters

[in]	val	floating-point value
[in]	s	raw token value

Returns: whether parsing should proceed

◆ number_integer()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::number_integer ( number_integer_t val )

pure virtual

an integer number was read

Parameters

[in] val integer value

Returns: whether parsing should proceed

◆ number_unsigned()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::number_unsigned ( number_unsigned_t val )

pure virtual

an unsigned integer number was read

Parameters

[in] val unsigned integer value

Returns: whether parsing should proceed

◆ parse_error()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::parse_error	(	std::size_t	position,
		const std::string &	last_token,
		const detail::exception &	ex
	)

pure virtual

a parse error occurred

Parameters

[in]	position	the position in the input where the error occurs
[in]	last_token	the last read token
[in]	ex	an exception object describing the error

Returns: whether parsing should proceed (must return false)

◆ start_array()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::start_array ( std::size_t elements )

pure virtual

the beginning of an array was read

Parameters

[in] elements number of array elements or -1 if unknown

Returns: whether parsing should proceed

Note: binary formats may report the number of elements

◆ start_object()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::start_object ( std::size_t elements )

pure virtual

the beginning of an object was read

Parameters

[in] elements number of object elements or -1 if unknown

Returns: whether parsing should proceed

Note: binary formats may report the number of elements

◆ string()

template<typename BasicJsonType >

virtual bool nlohmann::json_sax< BasicJsonType >::string ( string_t & val )

pure virtual

a string was read

Parameters

[in] val string value

Returns: whether parsing should proceed

Note: It is safe to move the passed string.

Public Types

Public Member Functions

Detailed Description

template<typename BasicJsonType> struct nlohmann::json_sax< BasicJsonType >

Member Typedef Documentation

◆ number_float_t

◆ number_integer_t

◆ number_unsigned_t

◆ string_t

Constructor & Destructor Documentation

◆ ~json_sax()

Member Function Documentation

◆ boolean()

◆ end_array()

◆ end_object()

◆ key()

◆ null()

◆ number_float()

◆ number_integer()

◆ number_unsigned()

◆ parse_error()

◆ start_array()

◆ start_object()

◆ string()

template<typename BasicJsonType>
struct nlohmann::json_sax< BasicJsonType >