amath  1.8.5
Simple command line calculator
token.h
Go to the documentation of this file.
1 /*-
2  * Copyright (c) 2014-2018 Carsten Sonne Larsen <cs@innolan.net>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  *
25  * Project homepage:
26  * https://amath.innolan.net
27  *
28  */
29 
30 #ifndef AMATH_TOKEN_H
31 #define AMATH_TOKEN_H
32 
33 /**
34  * @file token.h
35  * @brief Application logic tied to Token.
36  *
37  */
38 
39 #include "symbol.h"
40 
41 /**
42  * @brief Tokens are created by the Lexical Analyzer and provides an intermediate
43  * state for input consumed by the parser.
44  *
45  */
46 struct Token
47 {
48 public:
49  Token(Token* last, Symbol symbol, int pos);
50  Token(Token* last, Symbol symbol, const char* text, int pos);
51  ~Token();
52 
53  Symbol symbol;
54  int GetPos() const;
55  char* GetText() const;
56  Token* GetLastToken() const;
58 
59 private:
60  int pos;
61  char* text;
64  friend class Lexer;
65 };
66 
67 #endif
Token(Token *last, Symbol symbol, int pos)
Definition: token.cpp:37
Encapsulates an lexical analyzer. Provides token for the parser.
Definition: lexer.h:48
Token * last
Definition: token.h:62
char * text
Definition: token.h:61
Tokens are created by the Lexical Analyzer and provides an intermediate state for input consumed by t...
Definition: token.h:46
Symbol symbol
Definition: token.h:53
char * GetText() const
Definition: token.cpp:84
int GetPos() const
Definition: token.cpp:89
Token * GetLastToken() const
Definition: token.cpp:68
int pos
Definition: token.h:60
Token * GetNextToken()
Definition: token.cpp:73
~Token()
Definition: token.cpp:55
Token * next
Definition: token.h:63
Token(Token *last, Symbol symbol, const char *text, int pos)
Definition: token.cpp:46