source: trunk/src/declarative/qml/qdeclarativecompiler_p.h@ 902

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** General Public License version 3.0 as published by the Free Software
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#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), component(0) {}

        QByteArray className;
        QDeclarativeType *type;
        QDeclarativeCompiledData *component;

        QObject *createInstance(QDeclarativeContextData *, const QBitField &, QList<QDeclarativeError> *) const;
        const QMetaObject *metaObject() const;
    };
    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

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 &);