lexical analysis More...

#include <json.hpp>

Public Member Functions
	lexer (detail::input_adapter_t adapter)

	lexer (const lexer &)=delete

lexer &	operator= (lexer &)=delete

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

constexpr std::size_t	get_position () const noexcept
	return position of last read token

std::string	get_token_string () const

constexpr const char *	get_error_message () const noexcept
	return syntax error message

token_type	scan ()

Static Public Member Functions
static 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>
class nlohmann::detail::lexer< BasicJsonType >

lexical analysis

This class organizes the lexical analysis during JSON deserialization.

Member Enumeration Documentation

◆ token_type

template<typename BasicJsonType >

enum nlohmann::detail::lexer::token_type

strong

token types for the parser

Enumerator
uninitialized	indicating the scanner is uninitialized
literal_true	the `true` literal
literal_false	the `false` literal
literal_null	the `null` literal
value_string	a string – use get_string() for actual value
value_unsigned	an unsigned integer – use get_number_unsigned() for actual value
value_integer	a signed integer – use get_number_integer() for actual value
value_float	an floating point number – use get_number_float() for actual value
begin_array	the character for array begin `[`
begin_object	the character for object begin `{`
end_array	the character for array end `]`
end_object	the character for object end `}`
name_separator	the name separator `:`
value_separator	the value separator `,`
parse_error	indicating a parse error
end_of_input	indicating the end of the input buffer
literal_or_value	a literal or the begin of a value (only for diagnostics)

Member Function Documentation

◆ get_token_string()

template<typename BasicJsonType >

std::string nlohmann::detail::lexer< BasicJsonType >::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.

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

IO/vtk/include/json.hpp

Public Types
enum	token_type { token_type::uninitialized, token_type::literal_true, token_type::literal_false, token_type::literal_null, token_type::value_string, token_type::value_unsigned, token_type::value_integer, token_type::value_float, token_type::begin_array, token_type::begin_object, token_type::end_array, token_type::end_object, token_type::name_separator, token_type::value_separator, token_type::parse_error, token_type::end_of_input, token_type::literal_or_value }
	token types for the parser More...

Public Types

Public Member Functions