1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*****************************************************************************
*
* Copyright (c) 2000 - 2010, Lawrence Livermore National Security, LLC
* Produced at the Lawrence Livermore National Laboratory
* LLNL-CODE-400124
* All rights reserved.
*
* This file is part of VisIt. For details, see https://visit.llnl.gov/. The
* full copyright notice is contained in the file COPYRIGHT located at the root
* of the VisIt distribution or at http://www.llnl.gov/visit/copyright.html.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the disclaimer (as noted below) in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of the LLNS/LLNL nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 LAWRENCE LIVERMORE NATIONAL SECURITY,
* LLC, THE U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS 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 SYMBOL_H
#define SYMBOL_H
#include <parser_exports.h>
#include <vector>
#include <string>
#include <map>
#include <visitstream.h>
#define MAXSYMBOLS 64
struct SymbolSet;
class Rule;
class Dictionary;
// ****************************************************************************
// Class: Symbol
//
// Purpose:
// Used for terminals and nonterminals when expressing and
// parsing a grammar.
//
// Programmer: Jeremy Meredith
// Creation: April 4, 2002
//
// Modifications:
// Jeremy Meredith, Wed Nov 24 12:04:23 PST 2004
// Added a new constructor due to some major refactoring.
//
// Jeremy Meredith, Wed Jun 8 11:28:01 PDT 2005
// Moved static data to a new Dictionary object.
//
// ****************************************************************************
class PARSER_API Symbol
{
public:
enum Type { Terminal, NonTerminal };
public:
Symbol(Dictionary&,int tt);
Symbol(Dictionary&,int tt, const std::string &s);
Symbol(Dictionary&,const std::string &s);
bool operator==(const Symbol &rhs) const;
bool IsNullable(const std::vector<const Rule*>&) const;
SymbolSet GetFirstSet(const std::vector<const Rule*>&) const;
int GetIndex() const { return index; }
bool IsTerminal() const { return type == Terminal; }
bool IsNonTerminal() const { return type == NonTerminal; }
friend ostream &operator<<(ostream&, const Symbol&);
int GetTerminalType() const { return terminaltype; }
std::string GetDisplayString() const { return displaystring; }
private:
Type type;
int terminaltype;
std::string displaystring;
int index;
};
#endif
|
