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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 351 insertions, 0 deletions

diff --git a/src/declarative/qml/qdeclarativecompiler_p.h b/src/declarative/qml/qdeclarativecompiler_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module 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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDECLARATIVECOMPILER_P_H
+#define QDECLARATIVECOMPILER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qdeclarative.h"
+#include "qdeclarativeerror.h"
+#include "private/qdeclarativeinstruction_p.h"
+#include "private/qdeclarativeparser_p.h"
+#include "private/qdeclarativeengine_p.h"
+#include "private/qbitfield_p.h"
+#include "private/qdeclarativepropertycache_p.h"
+#include "private/qdeclarativeintegercache_p.h"
+#include "private/qdeclarativetypenamecache_p.h"
+#include "private/qdeclarativetypeloader_p.h"
+
+#include <QtCore/qbytearray.h>
+#include <QtCore/qset.h>
+#include <QtCore/QCoreApplication>
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeEngine;
+class QDeclarativeComponent;
+class QDeclarativeContext;
+class QDeclarativeContextData;
+
+class QScriptProgram;
+class Q_AUTOTEST_EXPORT QDeclarativeCompiledData : public QDeclarativeRefCount, public QDeclarativeCleanup
+{
+public:
+    QDeclarativeCompiledData(QDeclarativeEngine *engine);
+    virtual ~QDeclarativeCompiledData();
+
+    QString name;
+    QUrl url;
+    QDeclarativeTypeNameCache *importCache;
+
+    struct TypeReference 
+    {
+        TypeReference()
+        : type(0), typePropertyCache(0), component(0) {}
+
+        QByteArray className;
+        QDeclarativeType *type;
+        QDeclarativePropertyCache *typePropertyCache;
+        QDeclarativeCompiledData *component;
+
+        QObject *createInstance(QDeclarativeContextData *, const QBitField &, QList<QDeclarativeError> *) const;
+        const QMetaObject *metaObject() const;
+        QDeclarativePropertyCache *propertyCache() const;
+        QDeclarativePropertyCache *createPropertyCache(QDeclarativeEngine *);
+    };
+    QList<TypeReference> types;
+    struct CustomTypeData
+    {
+        int index;
+        int type;
+    };
+
+    const QMetaObject *root;
+    QAbstractDynamicMetaObject rootData;
+    QDeclarativePropertyCache *rootPropertyCache;
+    QList<QString> primitives;
+    QList<float> floatData;
+    QList<int> intData;
+    QList<CustomTypeData> customTypeData;
+    QList<QByteArray> datas;
+    QList<QDeclarativeParser::Location> locations;
+    QList<QDeclarativeInstruction> bytecode;
+    QList<QScriptProgram *> cachedPrograms;
+    QList<QScriptValue *> cachedClosures;
+    QList<QDeclarativePropertyCache *> propertyCaches;
+    QList<QDeclarativeIntegerCache *> contextCaches;
+    QList<QDeclarativeParser::Object::ScriptBlock> scripts;
+    QList<QUrl> urls;
+
+    void dumpInstructions();
+
+protected:
+    virtual void clear(); // From QDeclarativeCleanup
+
+private:
+    void dump(QDeclarativeInstruction *, int idx = -1);
+    QDeclarativeCompiledData(const QDeclarativeCompiledData &other);
+    QDeclarativeCompiledData &operator=(const QDeclarativeCompiledData &other);
+    QByteArray packData;
+    friend class QDeclarativeCompiler;
+    int pack(const char *, size_t);
+
+    int indexForString(const QString &);
+    int indexForByteArray(const QByteArray &);
+    int indexForFloat(float *, int);
+    int indexForInt(int *, int);
+    int indexForLocation(const QDeclarativeParser::Location &);
+    int indexForLocation(const QDeclarativeParser::LocationSpan &);
+    int indexForUrl(const QUrl &);
+};
+
+class QMetaObjectBuilder;
+class Q_AUTOTEST_EXPORT QDeclarativeCompiler
+{
+    Q_DECLARE_TR_FUNCTIONS(QDeclarativeCompiler)
+public:
+    QDeclarativeCompiler();
+
+    bool compile(QDeclarativeEngine *, QDeclarativeTypeData *, QDeclarativeCompiledData *);
+
+    bool isError() const;
+    QList<QDeclarativeError> errors() const;
+
+    static bool isAttachedPropertyName(const QByteArray &);
+    static bool isSignalPropertyName(const QByteArray &);
+
+    int evaluateEnum(const QByteArray& script) const; // for QDeclarativeCustomParser::evaluateEnum
+    const QMetaObject *resolveType(const QByteArray& name) const; // for QDeclarativeCustomParser::resolveType
+    int rewriteBinding(const QString& expression, const QByteArray& name); // for QDeclarativeCustomParser::rewriteBinding
+
+private:
+    static void reset(QDeclarativeCompiledData *);
+
+    struct BindingContext {
+        BindingContext()
+            : stack(0), owner(0), object(0) {}
+        BindingContext(QDeclarativeParser::Object *o)
+            : stack(0), owner(0), object(o) {}
+        BindingContext incr() const {
+            BindingContext rv(object);
+            rv.stack = stack + 1;
+            return rv;
+        }
+        bool isSubContext() const { return stack != 0; }
+        int stack;
+        int owner;
+        QDeclarativeParser::Object *object;
+    };
+
+    void compileTree(QDeclarativeParser::Object *tree);
+
+
+    bool buildObject(QDeclarativeParser::Object *obj, const BindingContext &);
+    bool buildComponent(QDeclarativeParser::Object *obj, const BindingContext &);
+    bool buildSubObject(QDeclarativeParser::Object *obj, const BindingContext &);
+    bool buildSignal(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, 
+                     const BindingContext &);
+    bool buildProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, 
+                       const BindingContext &);
+    bool buildPropertyInNamespace(QDeclarativeImportedNamespace *ns,
+                                  QDeclarativeParser::Property *prop, 
+                                  QDeclarativeParser::Object *obj, 
+                                  const BindingContext &);
+    bool buildIdProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
+    bool buildAttachedProperty(QDeclarativeParser::Property *prop, 
+                               QDeclarativeParser::Object *obj,
+                               const BindingContext &ctxt);
+    bool buildGroupedProperty(QDeclarativeParser::Property *prop,
+                              QDeclarativeParser::Object *obj,
+                              const BindingContext &ctxt);
+    bool buildValueTypeProperty(QObject *type, 
+                                QDeclarativeParser::Object *obj, 
+                                QDeclarativeParser::Object *baseObj,
+                                const BindingContext &ctxt);
+    bool buildListProperty(QDeclarativeParser::Property *prop,
+                           QDeclarativeParser::Object *obj,
+                           const BindingContext &ctxt);
+    bool buildScriptStringProperty(QDeclarativeParser::Property *prop,
+                                   QDeclarativeParser::Object *obj,
+                                   const BindingContext &ctxt);
+    bool buildPropertyAssignment(QDeclarativeParser::Property *prop,
+                                 QDeclarativeParser::Object *obj,
+                                 const BindingContext &ctxt);
+    bool buildPropertyObjectAssignment(QDeclarativeParser::Property *prop,
+                                       QDeclarativeParser::Object *obj,
+                                       QDeclarativeParser::Value *value,
+                                       const BindingContext &ctxt);
+    bool buildPropertyOnAssignment(QDeclarativeParser::Property *prop,
+                                   QDeclarativeParser::Object *obj,
+                                   QDeclarativeParser::Object *baseObj,
+                                   QDeclarativeParser::Value *value,
+                                   const BindingContext &ctxt);
+    bool buildPropertyLiteralAssignment(QDeclarativeParser::Property *prop,
+                                        QDeclarativeParser::Object *obj,
+                                        QDeclarativeParser::Value *value,
+                                        const BindingContext &ctxt);
+    bool doesPropertyExist(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
+    bool testLiteralAssignment(const QMetaProperty &prop, 
+                               QDeclarativeParser::Value *value);
+    bool testQualifiedEnumAssignment(const QMetaProperty &prop,
+                                     QDeclarativeParser::Object *obj,
+                                     QDeclarativeParser::Value *value,
+                                     bool *isAssignment);
+    enum DynamicMetaMode { IgnoreAliases, ResolveAliases, ForceCreation };
+    bool mergeDynamicMetaProperties(QDeclarativeParser::Object *obj);
+    bool buildDynamicMeta(QDeclarativeParser::Object *obj, DynamicMetaMode mode);
+    bool checkDynamicMeta(QDeclarativeParser::Object *obj);
+    bool buildBinding(QDeclarativeParser::Value *, QDeclarativeParser::Property *prop,
+                      const BindingContext &ctxt);
+    bool buildComponentFromRoot(QDeclarativeParser::Object *obj, const BindingContext &);
+    bool compileAlias(QMetaObjectBuilder &, 
+                      QByteArray &data,
+                      QDeclarativeParser::Object *obj, 
+                      const QDeclarativeParser::Object::DynamicProperty &);
+    bool completeComponentBuild();
+    bool checkValidId(QDeclarativeParser::Value *, const QString &);
+
+
+    void genObject(QDeclarativeParser::Object *obj);
+    void genObjectBody(QDeclarativeParser::Object *obj);
+    void genValueTypeProperty(QDeclarativeParser::Object *obj,QDeclarativeParser::Property *);
+    void genComponent(QDeclarativeParser::Object *obj);
+    void genValueProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
+    void genListProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
+    void genPropertyAssignment(QDeclarativeParser::Property *prop, 
+                               QDeclarativeParser::Object *obj,
+                               QDeclarativeParser::Property *valueTypeProperty = 0);
+    void genLiteralAssignment(const QMetaProperty &prop, 
+                              QDeclarativeParser::Value *value);
+    void genBindingAssignment(QDeclarativeParser::Value *binding, 
+                              QDeclarativeParser::Property *prop, 
+                              QDeclarativeParser::Object *obj,
+                              QDeclarativeParser::Property *valueTypeProperty = 0);
+    int genContextCache();
+
+    int genValueTypeData(QDeclarativeParser::Property *prop, QDeclarativeParser::Property *valueTypeProp);
+    int genPropertyData(QDeclarativeParser::Property *prop);
+
+    int componentTypeRef();
+
+    static QDeclarativeType *toQmlType(QDeclarativeParser::Object *from);
+    bool canCoerce(int to, QDeclarativeParser::Object *from);
+
+    QStringList deferredProperties(QDeclarativeParser::Object *);
+    int indexOfProperty(QDeclarativeParser::Object *, const QByteArray &, bool *notInRevision = 0);
+    int indexOfSignal(QDeclarativeParser::Object *, const QByteArray &, bool *notInRevision = 0);
+
+    void addId(const QString &, QDeclarativeParser::Object *);
+
+    void dumpStats();
+
+    struct BindingReference {
+        QDeclarativeParser::Variant expression;
+        QDeclarativeParser::Property *property;
+        QDeclarativeParser::Value *value;
+
+        enum DataType { QtScript, Experimental };
+        DataType dataType;
+
+        int compiledIndex;
+
+        QByteArray compiledData;
+        BindingContext bindingContext;
+    };
+    void addBindingReference(const BindingReference &);
+
+    struct ComponentCompileState
+    {
+        ComponentCompileState() 
+            : parserStatusCount(0), pushedProperties(0), root(0) {}
+        QHash<QString, QDeclarativeParser::Object *> ids;
+        QHash<int, QDeclarativeParser::Object *> idIndexes;
+        int parserStatusCount;
+        int pushedProperties;
+
+        QByteArray compiledBindingData;
+
+        QHash<QDeclarativeParser::Value *, BindingReference> bindings;
+        QHash<QDeclarativeParser::Value *, BindingContext> signalExpressions;
+        QList<QDeclarativeParser::Object *> aliasingObjects;
+        QDeclarativeParser::Object *root;
+    };
+    ComponentCompileState compileState;
+
+    struct ComponentStat
+    {
+        ComponentStat() : ids(0), objects(0) {}
+
+        int lineNumber;
+
+        int ids;
+        QList<QDeclarativeParser::LocationSpan> scriptBindings;
+        QList<QDeclarativeParser::LocationSpan> optimizedBindings;
+        int objects;
+    };
+    ComponentStat componentStat;
+
+    void saveComponentState();
+
+    ComponentCompileState componentState(QDeclarativeParser::Object *);
+    QHash<QDeclarativeParser::Object *, ComponentCompileState> savedCompileStates;
+    QList<ComponentStat> savedComponentStats;
+
+    QList<QDeclarativeError> exceptions;
+    QDeclarativeCompiledData *output;
+    QDeclarativeEngine *engine;
+    QDeclarativeEnginePrivate *enginePrivate;
+    QDeclarativeParser::Object *unitRoot;
+    QDeclarativeTypeData *unit;
+};
+QT_END_NAMESPACE
+
+#endif // QDECLARATIVECOMPILER_P_H