lexical analysis More...

#include <json.hpp>

Inheritance diagram for detail::lexer< BasicJsonType, InputAdapterType >:

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

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.

Member Function Documentation

◆ 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.

◆ 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

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ get_token_string()

◆ skip_bom()