source: trunk/src/declarative/qml/qdeclarativecompiler_p.h

Last change on this file was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 13.8 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the QtDeclarative module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at qt-info@nokia.com.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#ifndef QDECLARATIVECOMPILER_P_H
43#define QDECLARATIVECOMPILER_P_H
44
45//
46// W A R N I N G
47// -------------
48//
49// This file is not part of the Qt API. It exists purely as an
50// implementation detail. This header file may change from version to
51// version without notice, or even be removed.
52//
53// We mean it.
54//
55
56#include "qdeclarative.h"
57#include "qdeclarativeerror.h"
58#include "private/qdeclarativeinstruction_p.h"
59#include "private/qdeclarativeparser_p.h"
60#include "private/qdeclarativeengine_p.h"
61#include "private/qbitfield_p.h"
62#include "private/qdeclarativepropertycache_p.h"
63#include "private/qdeclarativeintegercache_p.h"
64#include "private/qdeclarativetypenamecache_p.h"
65#include "private/qdeclarativetypeloader_p.h"
66
67#include <QtCore/qbytearray.h>
68#include <QtCore/qset.h>
69#include <QtCore/QCoreApplication>
70
71QT_BEGIN_NAMESPACE
72
73class QDeclarativeEngine;
74class QDeclarativeComponent;
75class QDeclarativeContext;
76class QDeclarativeContextData;
77
78class QScriptProgram;
79class Q_AUTOTEST_EXPORT QDeclarativeCompiledData : public QDeclarativeRefCount, public QDeclarativeCleanup
80{
81public:
82 QDeclarativeCompiledData(QDeclarativeEngine *engine);
83 virtual ~QDeclarativeCompiledData();
84
85 QString name;
86 QUrl url;
87 QDeclarativeTypeNameCache *importCache;
88
89 struct TypeReference
90 {
91 TypeReference()
92 : type(0), component(0) {}
93
94 QByteArray className;
95 QDeclarativeType *type;
96 QDeclarativeCompiledData *component;
97
98 QObject *createInstance(QDeclarativeContextData *, const QBitField &, QList<QDeclarativeError> *) const;
99 const QMetaObject *metaObject() const;
100 };
101 QList<TypeReference> types;
102 struct CustomTypeData
103 {
104 int index;
105 int type;
106 };
107
108 const QMetaObject *root;
109 QAbstractDynamicMetaObject rootData;
110 QDeclarativePropertyCache *rootPropertyCache;
111 QList<QString> primitives;
112 QList<float> floatData;
113 QList<int> intData;
114 QList<CustomTypeData> customTypeData;
115 QList<QByteArray> datas;
116 QList<QDeclarativeParser::Location> locations;
117 QList<QDeclarativeInstruction> bytecode;
118 QList<QScriptProgram *> cachedPrograms;
119 QList<QScriptValue *> cachedClosures;
120 QList<QDeclarativePropertyCache *> propertyCaches;
121 QList<QDeclarativeIntegerCache *> contextCaches;
122 QList<QDeclarativeParser::Object::ScriptBlock> scripts;
123 QList<QUrl> urls;
124
125 void dumpInstructions();
126
127protected:
128 virtual void clear(); // From QDeclarativeCleanup
129
130private:
131 void dump(QDeclarativeInstruction *, int idx = -1);
132 QDeclarativeCompiledData(const QDeclarativeCompiledData &other);
133 QDeclarativeCompiledData &operator=(const QDeclarativeCompiledData &other);
134 QByteArray packData;
135 friend class QDeclarativeCompiler;
136 int pack(const char *, size_t);
137
138 int indexForString(const QString &);
139 int indexForByteArray(const QByteArray &);
140 int indexForFloat(float *, int);
141 int indexForInt(int *, int);
142 int indexForLocation(const QDeclarativeParser::Location &);
143 int indexForLocation(const QDeclarativeParser::LocationSpan &);
144 int indexForUrl(const QUrl &);
145};
146
147class QMetaObjectBuilder;
148class Q_AUTOTEST_EXPORT QDeclarativeCompiler
149{
150 Q_DECLARE_TR_FUNCTIONS(QDeclarativeCompiler)
151public:
152 QDeclarativeCompiler();
153
154 bool compile(QDeclarativeEngine *, QDeclarativeTypeData *, QDeclarativeCompiledData *);
155
156 bool isError() const;
157 QList<QDeclarativeError> errors() const;
158
159 static bool isAttachedPropertyName(const QByteArray &);
160 static bool isSignalPropertyName(const QByteArray &);
161
162 int evaluateEnum(const QByteArray& script) const; // for QDeclarativeCustomParser::evaluateEnum
163 const QMetaObject *resolveType(const QByteArray& name) const; // for QDeclarativeCustomParser::resolveType
164
165private:
166 static void reset(QDeclarativeCompiledData *);
167
168 struct BindingContext {
169 BindingContext()
170 : stack(0), owner(0), object(0) {}
171 BindingContext(QDeclarativeParser::Object *o)
172 : stack(0), owner(0), object(o) {}
173 BindingContext incr() const {
174 BindingContext rv(object);
175 rv.stack = stack + 1;
176 return rv;
177 }
178 bool isSubContext() const { return stack != 0; }
179 int stack;
180 int owner;
181 QDeclarativeParser::Object *object;
182 };
183
184 void compileTree(QDeclarativeParser::Object *tree);
185
186
187 bool buildObject(QDeclarativeParser::Object *obj, const BindingContext &);
188 bool buildComponent(QDeclarativeParser::Object *obj, const BindingContext &);
189 bool buildSubObject(QDeclarativeParser::Object *obj, const BindingContext &);
190 bool buildSignal(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj,
191 const BindingContext &);
192 bool buildProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj,
193 const BindingContext &);
194 bool buildPropertyInNamespace(QDeclarativeImportedNamespace *ns,
195 QDeclarativeParser::Property *prop,
196 QDeclarativeParser::Object *obj,
197 const BindingContext &);
198 bool buildIdProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
199 bool buildAttachedProperty(QDeclarativeParser::Property *prop,
200 QDeclarativeParser::Object *obj,
201 const BindingContext &ctxt);
202 bool buildGroupedProperty(QDeclarativeParser::Property *prop,
203 QDeclarativeParser::Object *obj,
204 const BindingContext &ctxt);
205 bool buildValueTypeProperty(QObject *type,
206 QDeclarativeParser::Object *obj,
207 QDeclarativeParser::Object *baseObj,
208 const BindingContext &ctxt);
209 bool buildListProperty(QDeclarativeParser::Property *prop,
210 QDeclarativeParser::Object *obj,
211 const BindingContext &ctxt);
212 bool buildScriptStringProperty(QDeclarativeParser::Property *prop,
213 QDeclarativeParser::Object *obj,
214 const BindingContext &ctxt);
215 bool buildPropertyAssignment(QDeclarativeParser::Property *prop,
216 QDeclarativeParser::Object *obj,
217 const BindingContext &ctxt);
218 bool buildPropertyObjectAssignment(QDeclarativeParser::Property *prop,
219 QDeclarativeParser::Object *obj,
220 QDeclarativeParser::Value *value,
221 const BindingContext &ctxt);
222 bool buildPropertyOnAssignment(QDeclarativeParser::Property *prop,
223 QDeclarativeParser::Object *obj,
224 QDeclarativeParser::Object *baseObj,
225 QDeclarativeParser::Value *value,
226 const BindingContext &ctxt);
227 bool buildPropertyLiteralAssignment(QDeclarativeParser::Property *prop,
228 QDeclarativeParser::Object *obj,
229 QDeclarativeParser::Value *value,
230 const BindingContext &ctxt);
231 bool doesPropertyExist(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
232 bool testLiteralAssignment(const QMetaProperty &prop,
233 QDeclarativeParser::Value *value);
234 bool testQualifiedEnumAssignment(const QMetaProperty &prop,
235 QDeclarativeParser::Object *obj,
236 QDeclarativeParser::Value *value,
237 bool *isAssignment);
238 enum DynamicMetaMode { IgnoreAliases, ResolveAliases, ForceCreation };
239 bool mergeDynamicMetaProperties(QDeclarativeParser::Object *obj);
240 bool buildDynamicMeta(QDeclarativeParser::Object *obj, DynamicMetaMode mode);
241 bool checkDynamicMeta(QDeclarativeParser::Object *obj);
242 bool buildBinding(QDeclarativeParser::Value *, QDeclarativeParser::Property *prop,
243 const BindingContext &ctxt);
244 bool buildComponentFromRoot(QDeclarativeParser::Object *obj, const BindingContext &);
245 bool compileAlias(QMetaObjectBuilder &,
246 QByteArray &data,
247 QDeclarativeParser::Object *obj,
248 const QDeclarativeParser::Object::DynamicProperty &);
249 bool completeComponentBuild();
250 bool checkValidId(QDeclarativeParser::Value *, const QString &);
251
252
253 void genObject(QDeclarativeParser::Object *obj);
254 void genObjectBody(QDeclarativeParser::Object *obj);
255 void genValueTypeProperty(QDeclarativeParser::Object *obj,QDeclarativeParser::Property *);
256 void genComponent(QDeclarativeParser::Object *obj);
257 void genValueProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
258 void genListProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
259 void genPropertyAssignment(QDeclarativeParser::Property *prop,
260 QDeclarativeParser::Object *obj,
261 QDeclarativeParser::Property *valueTypeProperty = 0);
262 void genLiteralAssignment(const QMetaProperty &prop,
263 QDeclarativeParser::Value *value);
264 void genBindingAssignment(QDeclarativeParser::Value *binding,
265 QDeclarativeParser::Property *prop,
266 QDeclarativeParser::Object *obj,
267 QDeclarativeParser::Property *valueTypeProperty = 0);
268 int genContextCache();
269
270 int genValueTypeData(QDeclarativeParser::Property *prop, QDeclarativeParser::Property *valueTypeProp);
271 int genPropertyData(QDeclarativeParser::Property *prop);
272
273 int componentTypeRef();
274
275 static QDeclarativeType *toQmlType(QDeclarativeParser::Object *from);
276 bool canCoerce(int to, QDeclarativeParser::Object *from);
277
278 QStringList deferredProperties(QDeclarativeParser::Object *);
279
280 void addId(const QString &, QDeclarativeParser::Object *);
281
282 void dumpStats();
283
284 struct BindingReference {
285 QDeclarativeParser::Variant expression;
286 QDeclarativeParser::Property *property;
287 QDeclarativeParser::Value *value;
288
289 enum DataType { QtScript, Experimental };
290 DataType dataType;
291
292 int compiledIndex;
293
294 QByteArray compiledData;
295 BindingContext bindingContext;
296 };
297 void addBindingReference(const BindingReference &);
298
299 struct ComponentCompileState
300 {
301 ComponentCompileState()
302 : parserStatusCount(0), pushedProperties(0), root(0) {}
303 QHash<QString, QDeclarativeParser::Object *> ids;
304 QHash<int, QDeclarativeParser::Object *> idIndexes;
305 int parserStatusCount;
306 int pushedProperties;
307
308 QByteArray compiledBindingData;
309
310 QHash<QDeclarativeParser::Value *, BindingReference> bindings;
311 QHash<QDeclarativeParser::Value *, BindingContext> signalExpressions;
312 QList<QDeclarativeParser::Object *> aliasingObjects;
313 QDeclarativeParser::Object *root;
314 };
315 ComponentCompileState compileState;
316
317 struct ComponentStat
318 {
319 ComponentStat() : ids(0), objects(0) {}
320
321 int lineNumber;
322
323 int ids;
324 QList<QDeclarativeParser::LocationSpan> scriptBindings;
325 QList<QDeclarativeParser::LocationSpan> optimizedBindings;
326 int objects;
327 };
328 ComponentStat componentStat;
329
330 void saveComponentState();
331
332 ComponentCompileState componentState(QDeclarativeParser::Object *);
333 QHash<QDeclarativeParser::Object *, ComponentCompileState> savedCompileStates;
334 QList<ComponentStat> savedComponentStats;
335
336 QList<QDeclarativeError> exceptions;
337 QDeclarativeCompiledData *output;
338 QDeclarativeEngine *engine;
339 QDeclarativeEnginePrivate *enginePrivate;
340 QDeclarativeParser::Object *unitRoot;
341 QDeclarativeTypeData *unit;
342};
343QT_END_NAMESPACE
344
345#endif // QDECLARATIVECOMPILER_P_H
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