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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the utils of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef GENERATOR_H
#define GENERATOR_H
#include <QTextStream>
#include <QStringList>
#include "nfa.h"
class LineStream
{
private:
struct SharedStream
{
int ref;
QTextStream *stream;
};
public:
LineStream(QTextStream *textStream)
{
shared = new SharedStream;
shared->ref = 1;
shared->stream = textStream;
}
LineStream(const LineStream &other)
{
shared = other.shared;
shared->ref++;
}
LineStream &operator=(const LineStream &other)
{
if (this == &other)
return *this;
LineStream copy(other); // keep refcount up
qSwap(*shared, *other.shared);
return *this;
}
~LineStream()
{
if (!--shared->ref) {
(*shared->stream) << endl;
delete shared;
}
}
template <typename T>
LineStream &operator<<(const T &value)
{ (*shared->stream) << value; return *this; }
SharedStream *shared;
};
class CodeBlock
{
public:
inline CodeBlock() { stream.setString(&output, QIODevice::WriteOnly); }
inline void indent() { indentStr += QLatin1String(" "); }
inline void outdent() { indentStr.remove(0, 4); }
template <typename T>
LineStream operator<<(const T &value)
{ stream << indentStr; stream << value; return LineStream(&stream); }
inline void addNewLine() { stream << endl; }
inline QString toString() const { stream.flush(); return output; }
private:
QString output;
mutable QTextStream stream;
QString indentStr;
};
class Function
{
public:
inline Function(const QString &returnType, const QString &name)
: rtype(returnType), fname(name), iline(false), cnst(false) {}
inline Function() : iline(false), cnst(false) {}
inline void setName(const QString &name) { fname = name; }
inline QString name() const { return fname; }
inline void setInline(bool i) { iline = i; }
inline bool isInline() const { return iline; }
inline void setReturnType(const QString &type) { rtype = type; }
inline QString returnType() const { return rtype; }
inline void addBody(const QString &_body) { body += _body; }
inline void addBody(const CodeBlock &block) { body += block.toString(); }
inline bool hasBody() const { return !body.isEmpty(); }
inline void setConst(bool konst) { cnst = konst; }
inline bool isConst() const { return cnst; }
void printDeclaration(CodeBlock &block, const QString &funcNamePrefix = QString()) const;
QString definition() const;
private:
QString signature(const QString &funcNamePrefix = QString()) const;
QString rtype;
QString fname;
QString body;
bool iline;
bool cnst;
};
class Class
{
public:
enum Access { PublicMember, ProtectedMember, PrivateMember };
inline Class(const QString &name) : cname(name) {}
inline void setName(const QString &name) { cname = name; }
inline QString name() const { return cname; }
inline void addMember(Access access, const QString &name)
{ sections[access].variables.append(name); }
inline void addMember(Access access, const Function &func)
{ sections[access].functions.append(func); }
void addConstructor(Access access, const QString &body, const QString &args = QString());
inline void addConstructor(Access access, const CodeBlock &body, const QString &args = QString())
{ addConstructor(access, body.toString(), args); }
QString declaration() const;
QString definition() const;
private:
QString cname;
struct Section
{
QVector<Function> functions;
QStringList variables;
QVector<Function> constructors;
inline bool isEmpty() const
{ return functions.isEmpty() && variables.isEmpty() && constructors.isEmpty(); }
void printDeclaration(const Class *klass, CodeBlock &block) const;
QString definition(const Class *klass) const;
};
Section sections[3];
};
class Generator
{
public:
Generator(const DFA &dfa, const Config &config);
QString generate();
private:
void generateTransitions(CodeBlock &body, const TransitionMap &transitions);
bool isSingleReferencedFinalState(int i) const;
DFA dfa;
Config cfg;
InputType minInput;
InputType maxInput;
QHash<int, int> backReferenceMap;
QString headerFileName;
public:
struct TransitionSequence
{
inline TransitionSequence() : first(-1), last(-1), transition(-1) {}
InputType first;
InputType last;
int transition;
QString testFunction;
};
private:
QVector<TransitionSequence> charFunctionRanges;
};
#endif
|
