detail::lexer< BasicJsonType, InputAdapterType > Class Template Reference

lexical analysis More...

#include <json.hpp>

Inherits detail::lexer_base< BasicJsonType >.

Public Types
using	token_type = typename lexer_base< BasicJsonType >::token_type
Public Types inherited from detail::lexer_base< BasicJsonType >
enum class	token_type {   uninitialized , literal_true , literal_false , literal_null ,   value_string , value_unsigned , value_integer , value_float ,   begin_array , begin_object , end_array , end_object ,   name_separator , value_separator , parse_error , end_of_input ,   literal_or_value }
	token types for the parser More...

Public Member Functions
	lexer (InputAdapterType &&adapter, bool ignore_comments_=false) noexcept
	lexer (const lexer &)=delete
	lexer (lexer &&)=default
lexer &	operator= (lexer &)=delete
lexer &	operator= (lexer &&)=default
	~lexer ()=default
constexpr number_integer_t	get_number_integer () const noexcept
	return integer value
constexpr number_unsigned_t	get_number_unsigned () const noexcept
	return unsigned integer value
constexpr number_float_t	get_number_float () const noexcept
	return floating-point value
string_t &	get_string ()
	return current string value (implicitly resets the token; useful only once)
constexpr position_t	get_position () const noexcept
	return position of last read token
std::string	get_token_string () const
JSON_HEDLEY_RETURNS_NON_NULL constexpr const char *	get_error_message () const noexcept
	return syntax error message
bool	skip_bom ()
	skip the UTF-8 byte order mark
void	skip_whitespace ()
token_type	scan ()

Additional Inherited Members
Static Public Member Functions inherited from detail::lexer_base< BasicJsonType >
JSON_HEDLEY_RETURNS_NON_NULL static JSON_HEDLEY_CONST const char *	token_type_name (const token_type t) noexcept
	return name of values of type token_type (only used for errors)

Detailed Description

template<typename BasicJsonType, typename InputAdapterType>
class detail::lexer< BasicJsonType, InputAdapterType >

lexical analysis

This class organizes the lexical analysis during JSON deserialization.

Definition at line 7416 of file json.hpp.

Member Typedef Documentation

token_type

template<typename BasicJsonType , typename InputAdapterType >

using detail::lexer< BasicJsonType, InputAdapterType >::token_type = typename lexer_base<BasicJsonType>::token_type

Definition at line 7426 of file json.hpp.

Constructor & Destructor Documentation

lexer() [1/3]

template<typename BasicJsonType , typename InputAdapterType >

detail::lexer< BasicJsonType, InputAdapterType >::lexer ( InputAdapterType &&  adapter, bool  ignore_comments_ = false  )

inlineexplicitnoexcept

Definition at line 7428 of file json.hpp.

lexer() [2/3]

template<typename BasicJsonType , typename InputAdapterType >

detail::lexer< BasicJsonType, InputAdapterType >::lexer ( const lexer< BasicJsonType, InputAdapterType > &  )

delete

lexer() [3/3]

template<typename BasicJsonType , typename InputAdapterType >

detail::lexer< BasicJsonType, InputAdapterType >::lexer ( lexer< BasicJsonType, InputAdapterType > &&  )

default

~lexer()

template<typename BasicJsonType , typename InputAdapterType >

detail::lexer< BasicJsonType, InputAdapterType >::~lexer ( )

default

Member Function Documentation

get_error_message()

template<typename BasicJsonType , typename InputAdapterType >

JSON_HEDLEY_RETURNS_NON_NULL constexpr const char * detail::lexer< BasicJsonType, InputAdapterType >::get_error_message ( ) const

inlineconstexprnoexcept

return syntax error message

Definition at line 8778 of file json.hpp.

get_number_float()

template<typename BasicJsonType , typename InputAdapterType >

constexpr number_float_t detail::lexer< BasicJsonType, InputAdapterType >::get_number_float ( ) const

inlineconstexprnoexcept

return floating-point value

Definition at line 8729 of file json.hpp.

get_number_integer()

template<typename BasicJsonType , typename InputAdapterType >

constexpr number_integer_t detail::lexer< BasicJsonType, InputAdapterType >::get_number_integer ( ) const

inlineconstexprnoexcept

return integer value

Definition at line 8717 of file json.hpp.

get_number_unsigned()

template<typename BasicJsonType , typename InputAdapterType >

constexpr number_unsigned_t detail::lexer< BasicJsonType, InputAdapterType >::get_number_unsigned ( ) const

inlineconstexprnoexcept

return unsigned integer value

Definition at line 8723 of file json.hpp.

get_position()

template<typename BasicJsonType , typename InputAdapterType >

constexpr position_t detail::lexer< BasicJsonType, InputAdapterType >::get_position ( ) const

inlineconstexprnoexcept

return position of last read token

Definition at line 8745 of file json.hpp.

get_string()

template<typename BasicJsonType , typename InputAdapterType >

string_t & detail::lexer< BasicJsonType, InputAdapterType >::get_string ( )

inline

return current string value (implicitly resets the token; useful only once)

Definition at line 8735 of file json.hpp.

get_token_string()

template<typename BasicJsonType , typename InputAdapterType >

std::string detail::lexer< BasicJsonType, InputAdapterType >::get_token_string ( ) const

inline

return the last read token (for errors only). Will never contain EOF (an arbitrary value that is not a valid char value, often -1), because 255 may legitimately occur. May contain NUL, which should be escaped.

Definition at line 8753 of file json.hpp.

operator=() [1/2]

template<typename BasicJsonType , typename InputAdapterType >

lexer & detail::lexer< BasicJsonType, InputAdapterType >::operator= ( lexer< BasicJsonType, InputAdapterType > &&  )

default

operator=() [2/2]

template<typename BasicJsonType , typename InputAdapterType >

lexer & detail::lexer< BasicJsonType, InputAdapterType >::operator= ( lexer< BasicJsonType, InputAdapterType > &  )

delete

scan()

template<typename BasicJsonType , typename InputAdapterType >

token_type detail::lexer< BasicJsonType, InputAdapterType >::scan ( )

inline

Definition at line 8814 of file json.hpp.

skip_bom()

template<typename BasicJsonType , typename InputAdapterType >

bool detail::lexer< BasicJsonType, InputAdapterType >::skip_bom ( )

inline

skip the UTF-8 byte order mark

Returns

true iff there is no BOM or the correct BOM has been skipped

Definition at line 8791 of file json.hpp.

skip_whitespace()

template<typename BasicJsonType , typename InputAdapterType >

void detail::lexer< BasicJsonType, InputAdapterType >::skip_whitespace ( )

inline

Definition at line 8805 of file json.hpp.

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The documentation for this class was generated from the following file:

• include/nlohmann/json.hpp