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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
/****************************************************************************
**
** Copyright (C) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Script Generator project on Qt Labs.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "setupgenerator.h"
#include "reporthandler.h"
#include "fileout.h"
//#define Q_SCRIPT_LAZY_GENERATOR
void SetupGenerator::addClass(const AbstractMetaClass *cls)
{
packHash[cls->package()].append(cls);
}
void writeQtScriptQtBindingsLicense(QTextStream &stream);
void maybeDeclareMetaType(QTextStream &stream, const QString &typeName,
QSet<QString> ®isteredTypeNames);
bool hasDefaultConstructor(const AbstractMetaClass *meta_class);
void SetupGenerator::generate()
{
QHashIterator<QString, QList<const AbstractMetaClass*> > pack(packHash);
while (pack.hasNext()) {
pack.next();
QList<const AbstractMetaClass*> list = pack.value();
if (list.isEmpty())
continue;
QString packName = pack.key();
packName.replace(".", "_");
{
FileOut initFile(m_out_dir + "/generated_cpp/" + packName + "/" + packName + "_init.cpp");
QTextStream &s = initFile.stream;
if (FileOut::license)
writeQtScriptQtBindingsLicense(s);
s << "#include <QtScript/QScriptValue>" << endl
<< "#include <QtScript/QScriptEngine>" << endl;
#ifdef Q_SCRIPT_LAZY_GENERATOR
s << "#include <QtScript/QScriptClass>" << endl
<< "#include <QtScript/QScriptString>" << endl;
#endif
s << endl;
// declare individual class creation functions
foreach (const AbstractMetaClass *cls, list) {
s << "QScriptValue qtscript_create_" << cls->name() << "_class(QScriptEngine *engine);" << endl;
}
s << endl;
// write table of class names
{
s << "static const char * const qtscript_" << packName << "_class_names[] = {" << endl;
bool needComma = false;
foreach (const AbstractMetaClass *cls, list) {
s << " ";
if (needComma)
s << ", ";
s << "\"" << cls->name() << "\"" << endl;
needComma = true;
}
s << "};" << endl << endl;
}
// write table of function pointers
{
s << "typedef QScriptValue (*QtBindingCreator)(QScriptEngine *engine);" << endl;
s << "static const QtBindingCreator qtscript_" << packName << "_class_functions[] = {" << endl;
bool needComma = false;
foreach (const AbstractMetaClass *cls, list) {
s << " ";
if (needComma)
s << ", ";
s << "qtscript_create_" << cls->name() << "_class" << endl;
needComma = true;
}
s << "};" << endl << endl;
}
#ifdef Q_SCRIPT_LAZY_GENERATOR
{
// declare meta-types
QSet<QString> registeredTypeNames = m_qmetatype_declared_typenames;
foreach (const AbstractMetaClass *cls, list) {
if (cls->isNamespace())
continue;
QString name = cls->qualifiedCppName();
if (cls->typeEntry()->isValue() && ::hasDefaultConstructor(cls))
maybeDeclareMetaType(s, name, registeredTypeNames);
maybeDeclareMetaType(s, name + "*", registeredTypeNames);
}
s << endl;
// write table of metatype-ids
s << "static const int qtscript_" << packName << "_metatype_ids[] = {" << endl;
for (int i = 0; i < list.size(); ++i) {
const AbstractMetaClass *cls = list.at(i);
s << " ";
if (i > 0)
s << ", ";
if (cls->isNamespace()) {
s << "-1, -1";
} else {
QString name = cls->qualifiedCppName();
if (cls->typeEntry()->isValue() && ::hasDefaultConstructor(cls))
s << "qMetaTypeId<" << name << ">()";
else
s << "-1";
s << ", qMetaTypeId<" << name << "*>()";
}
s << endl;
}
s << "};" << endl << endl;
}
// write the fake prototype class
{
s << "class qtscript_" << packName << "_FakePrototype : public QScriptClass" << endl
<< "{" << endl
<< "public:" << endl
<< " qtscript_" << packName << "_FakePrototype(QScriptEngine *engine)" << endl
<< " : QScriptClass(engine) {}" << endl << endl
<< " QueryFlags queryProperty(const QScriptValue &fake," << endl
<< " const QScriptString &name, QueryFlags flags, uint *)" << endl
<< " {" << endl
<< " if (fake.prototype().isValid())" << endl
<< " return 0;" << endl
<< " int classIndex = fake.data().toInt32();" << endl
<< " const char *className = qtscript_" << packName << "_class_names[classIndex];" << endl
// << " qDebug() << \"faking\" << className;" << endl
<< " QScriptValue extensionObject = engine()->globalObject();" << endl
<< " QScriptValue ctor = extensionObject.property(className);" << endl
<< " QScriptValue genuine = ctor.property(\"prototype\");" << endl
<< " Q_ASSERT(genuine.isObject());" << endl
<< " const_cast<QScriptValue&>(fake).setPrototype(genuine);" << endl
<< " if (!genuine.property(name).isValid())" << endl
<< " flags &= ~HandlesReadAccess;" << endl
<< " return flags & ~HandlesWriteAccess;" << endl
<< " }" << endl << endl
<< " QScriptValue property(const QScriptValue &fake, "
<< "const QScriptString &name, uint)" << endl
<< " {" << endl
<< " return fake.prototype().property(name, QScriptValue::ResolveLocal);" << endl
<< " }" << endl
<< "};" << endl << endl;
}
// write the lazy class loader
{
s << "static QScriptValue qtscript_" << packName << "_getSetClass("
<< "QScriptContext *context, QScriptEngine *engine)" << endl
<< "{" << endl
<< " QScriptValue target = context->thisObject();" << endl
<< " int classIndex = context->callee().data().toInt32();" << endl
<< " const char *className = qtscript_" << packName << "_class_names[classIndex];" << endl
<< " qDebug() << \"loading\" << className;" << endl
<< " target.setProperty(className, QScriptValue(), "
<< "QScriptValue::PropertyGetter|QScriptValue::PropertySetter);" << endl
<< " if (context->argumentCount() == 1) {" << endl
<< " target.setProperty(className, context->argument(0));" << endl
<< " } else {" << endl
<< " target.setProperty(className, qtscript_"
<< packName << "_class_functions[classIndex](engine)," << endl
<< " QScriptValue::SkipInEnumeration);" << endl
<< " }" << endl
<< " return target.property(className);" << endl
<< "}" << endl << endl;
}
#endif
// bindings init function
s << "void qtscript_initialize_" << packName << "_bindings(QScriptValue &extensionObject)" << endl
<< "{" << endl
<< " QScriptEngine *engine = extensionObject.engine();" << endl;
#ifdef Q_SCRIPT_LAZY_GENERATOR
s << " qtscript_" << packName << "_FakePrototype *fakeProtoClass;" << endl
<< " fakeProtoClass = new qtscript_" << packName << "_FakePrototype(engine);" << endl;
#endif
s << " for (int i = 0; i < " << list.size() << "; ++i) {" << endl
#ifndef Q_SCRIPT_LAZY_GENERATOR
<< " extensionObject.setProperty(qtscript_" << packName << "_class_names[i]," << endl
<< " qtscript_" << packName << "_class_functions[i](engine)," << endl
<< " QScriptValue::SkipInEnumeration);" << endl
#else
<< " QScriptValue classIndex(engine, i);" << endl
<< " QScriptValue fakeCtor = engine->newFunction(qtscript_" << packName << "_getSetClass);" << endl
<< " fakeCtor.setData(classIndex);" << endl
<< " extensionObject.setProperty(qtscript_" << packName << "_class_names[i]," << endl
<< " fakeCtor, QScriptValue::PropertyGetter|QScriptValue::PropertySetter"
<< "|QScriptValue::SkipInEnumeration);" << endl
<< " QScriptValue fakeProto = engine->newObject(fakeProtoClass, classIndex);" << endl
<< " fakeProto.setPrototype(QScriptValue());" << endl
<< " if (qtscript_" << packName << "_metatype_ids[i*2] != -1)" << endl
<< " engine->setDefaultPrototype(qtscript_"
<< packName << "_metatype_ids[i*2], fakeProto);" << endl
<< " if (qtscript_" << packName << "_metatype_ids[i*2+1] != -1)" << endl
<< " engine->setDefaultPrototype(qtscript_"
<< packName << "_metatype_ids[i*2+1], fakeProto);" << endl
#endif
<< " }" << endl
<< "}" << endl;
if (initFile.done())
++m_num_generated_written;
++m_num_generated;
}
}
}
|
