amath/app/main/token.h

64 lines
2.0 KiB
C++

/*
* Copyright (c) 2015-2017 Carsten Sonne Larsen <cs@innolan.dk>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef _TOKEN_H
#define _TOKEN_H
/**
* @file token.h
* @brief Application logic tied to Token.
*
*/
#include "localize/lex.h"
/**
* @brief Tokens are created by the Lexical Analyzer and provides an intermediate
* state for input consumed by the parser.
*
*/
struct Token {
public:
Token (Token* last, Symbol symbol, int pos);
Token (Token* last, Symbol symbol, const char *text, int pos);
~Token();
Symbol symbol;
int GetPos();
char* GetText();
Token* GetLastToken();
Token* GetNextToken();
private:
int pos;
char *text;
Token *last;
Token *next;
friend class Lexer;
};
#endif /* _TOKEN_H */