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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at info@qt.nokia.com.
**
**************************************************************************/
#ifndef GLSLLEXER_H
#define GLSLLEXER_H
#include "glsl.h"
#include <QtCore/qstring.h>
#include <QtCore/qstringlist.h>
namespace GLSL {
class GLSL_EXPORT Token
{
public:
int kind;
int position;
int length;
int line; // ### remove
union {
int matchingBrace;
int i; // integer value
const QString *string; // string value
void *ptr;
};
Token()
: kind(0), position(0), length(0), line(0), ptr(0) {}
bool is(int k) const { return k == kind; }
bool isNot(int k) const { return k != kind; }
int begin() const { return position; }
int end() const { return position + length; }
};
class GLSL_EXPORT Lexer
{
public:
Lexer(Engine *engine, const char *source, unsigned size);
~Lexer();
enum
{
// Extra flag bits added to tokens by Lexer::classify() that
// indicate which variant of GLSL the keyword belongs to.
Variant_GLSL_120 = 0x00010000, // 1.20 and higher
Variant_GLSL_150 = 0x00020000, // 1.50 and higher
Variant_GLSL_400 = 0x00040000, // 4.00 and higher
Variant_GLSL_ES_100 = 0x00080000, // ES 1.00 and higher
Variant_VertexShader = 0x00200000,
Variant_FragmentShader = 0x00400000,
Variant_Reserved = 0x80000000,
Variant_Mask = 0xFFFF0000,
Variant_All = 0xFFFF0000
};
union Value {
int i;
const QString *string;
void *ptr;
};
Engine *engine() const { return _engine; }
int state() const { return _state; }
void setState(int state) { _state = state; }
int variant() const { return _variant; }
void setVariant(int flags) { _variant = flags; }
bool scanKeywords() const { return _scanKeywords; }
void setScanKeywords(bool scanKeywords) { _scanKeywords = scanKeywords; }
bool scanComments() const { return _scanComments; }
void setScanComments(bool scanComments) { _scanComments = scanComments; }
int yylex(Token *tk);
int findKeyword(const char *word, int length) const;
void *yyval() const { return _yyval.ptr; }
static QStringList keywords(int variant);
private:
static int classify(const char *s, int len);
void yyinp();
int yylex_helper(const char **position, int *line);
void warning(int line, const QString &message);
void error(int line, const QString &message);
private:
Engine *_engine;
const char *_source;
const char *_it;
int _size;
int _yychar;
int _lineno;
int _state;
int _variant;
unsigned _scanKeywords: 1;
unsigned _scanComments: 1;
Value _yyval;
};
} // namespace GLSL
#endif // GLSLLEXER_H
|
