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

lexical analysis More...

#include <json.hpp>

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

Public Types

using token_type = typename lexer_base< BasicJsonType >::token_type
 
- Public Types inherited from nlohmann::detail::lexer_base< BasicJsonType >
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 Member Functions

 lexer (InputAdapterType &&adapter, bool ignore_comments_=false)
 
 lexer (const lexer &)=delete
 
 lexer (lexer &&)=default
 
lexeroperator= (lexer &)=delete
 
lexeroperator= (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
 
constexpr JSON_HEDLEY_RETURNS_NON_NULL const char * get_error_message () const noexcept
 return syntax error message
 
bool skip_bom ()
 skip the UTF-8 byte order mark More...
 
void skip_whitespace ()
 
token_type scan ()
 

Additional Inherited Members

- Static Public Member Functions inherited from nlohmann::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 nlohmann::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 nlohmann::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 nlohmann::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

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