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
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtScript module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL-ONLY$
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "config.h"
#include "qscriptprogram.h"
#include "qscriptprogram_p.h"
#include "qscriptengine.h"
#include "qscriptengine_p.h"
#include "SamplingTool.h"
#include "Executable.h"
QT_BEGIN_NAMESPACE
/*!
\since 4.7
\class QScriptProgram
\brief The QScriptProgram class encapsulates a Qt Script program.
\ingroup script
QScriptProgram retains the compiled representation of the script if
possible. Thus, QScriptProgram can be used to evaluate the same
script multiple times more efficiently.
\code
QScriptEngine engine;
QScriptProgram program("1 + 2");
QScriptValue result = engine.evaluate(program);
\endcode
*/
QScriptProgramPrivate::QScriptProgramPrivate(const QString &src,
const QString &fn,
int ln)
: sourceCode(src), fileName(fn), firstLineNumber(ln),
engine(0), _executable(0), sourceId(-1), isCompiled(false)
{
}
QScriptProgramPrivate::~QScriptProgramPrivate()
{
if (engine) {
QScript::APIShim shim(engine);
_executable.clear();
engine->unregisterScriptProgram(this);
}
}
QScriptProgramPrivate *QScriptProgramPrivate::get(const QScriptProgram &q)
{
return const_cast<QScriptProgramPrivate*>(q.d_func());
}
JSC::EvalExecutable *QScriptProgramPrivate::executable(JSC::ExecState *exec,
QScriptEnginePrivate *eng)
{
if (_executable) {
if (eng == engine)
return _executable.get();
// "Migrating" to another engine; clean up old state
QScript::APIShim shim(engine);
_executable.clear();
engine->unregisterScriptProgram(this);
}
WTF::PassRefPtr<QScript::UStringSourceProviderWithFeedback> provider
= QScript::UStringSourceProviderWithFeedback::create(sourceCode, fileName, firstLineNumber, eng);
sourceId = provider->asID();
JSC::SourceCode source(provider, firstLineNumber); //after construction of SourceCode provider variable will be null.
_executable = JSC::EvalExecutable::create(exec, source);
engine = eng;
engine->registerScriptProgram(this);
isCompiled = false;
return _executable.get();
}
void QScriptProgramPrivate::detachFromEngine()
{
_executable.clear();
sourceId = -1;
isCompiled = false;
engine = 0;
}
/*!
Constructs a null QScriptProgram.
*/
QScriptProgram::QScriptProgram()
: d_ptr(0)
{
}
/*!
Constructs a new QScriptProgram with the given \a sourceCode, \a
fileName and \a firstLineNumber.
*/
QScriptProgram::QScriptProgram(const QString &sourceCode,
const QString fileName,
int firstLineNumber)
: d_ptr(new QScriptProgramPrivate(sourceCode, fileName, firstLineNumber))
{
}
/*!
Constructs a new QScriptProgram that is a copy of \a other.
*/
QScriptProgram::QScriptProgram(const QScriptProgram &other)
: d_ptr(other.d_ptr)
{
}
/*!
Destroys this QScriptProgram.
*/
QScriptProgram::~QScriptProgram()
{
}
/*!
Assigns the \a other value to this QScriptProgram.
*/
QScriptProgram &QScriptProgram::operator=(const QScriptProgram &other)
{
d_ptr = other.d_ptr;
return *this;
}
/*!
Returns true if this QScriptProgram is null; otherwise
returns false.
*/
bool QScriptProgram::isNull() const
{
Q_D(const QScriptProgram);
return (d == 0);
}
/*!
Returns the source code of this program.
*/
QString QScriptProgram::sourceCode() const
{
Q_D(const QScriptProgram);
if (!d)
return QString();
return d->sourceCode;
}
/*!
Returns the filename associated with this program.
*/
QString QScriptProgram::fileName() const
{
Q_D(const QScriptProgram);
if (!d)
return QString();
return d->fileName;
}
/*!
Returns the line number associated with this program.
*/
int QScriptProgram::firstLineNumber() const
{
Q_D(const QScriptProgram);
if (!d)
return -1;
return d->firstLineNumber;
}
/*!
Returns true if this QScriptProgram is equal to \a other;
otherwise returns false.
*/
bool QScriptProgram::operator==(const QScriptProgram &other) const
{
Q_D(const QScriptProgram);
if (d == other.d_func())
return true;
return (sourceCode() == other.sourceCode())
&& (fileName() == other.fileName())
&& (firstLineNumber() == other.firstLineNumber());
}
/*!
Returns true if this QScriptProgram is not equal to \a other;
otherwise returns false.
*/
bool QScriptProgram::operator!=(const QScriptProgram &other) const
{
return !operator==(other);
}
QT_END_NAMESPACE
|
