QDeclarativeCompiler Class Reference

#include <qdeclarativecompiler_p.h>

Classes
struct	BindingContext
struct	BindingReference
struct	ComponentCompileState
struct	ComponentStat

Public Functions
bool	compile (QDeclarativeEngine *, QDeclarativeTypeData *, QDeclarativeCompiledData *)
	Compile unit, and store the output in out. More...
QList< QDeclarativeError >	errors () const
	Return the list of errors from the last call to compile(), or an empty list if there were no errors. More...
int	evaluateEnum (const QByteArray &script) const
bool	isError () const
	Returns true if the last call to compile() caused errors. More...
	QDeclarativeCompiler ()
	Instantiate a new QDeclarativeCompiler. More...
const QMetaObject *	resolveType (const QByteArray &name) const
int	rewriteBinding (const QString &expression, const QByteArray &name)

Static Public Functions
static bool	isAttachedPropertyName (const QByteArray &)
	Returns true if name refers to an attached property, false otherwise. More...
static bool	isSignalPropertyName (const QByteArray &)
	Returns true if name refers to a signal property, false otherwise. More...

Private Types
enum	DynamicMetaMode { IgnoreAliases, ResolveAliases, ForceCreation }

Private Functions
void	addBindingReference (const BindingReference &)
void	addId (const QString &, QDeclarativeParser::Object *)
bool	buildAttachedProperty (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, const BindingContext &ctxt)
bool	buildBinding (QDeclarativeParser::Value *, QDeclarativeParser::Property *prop, const BindingContext &ctxt)
bool	buildComponent (QDeclarativeParser::Object *obj, const BindingContext &)
bool	buildComponentFromRoot (QDeclarativeParser::Object *obj, const BindingContext &)
bool	buildDynamicMeta (QDeclarativeParser::Object *obj, DynamicMetaMode mode)
bool	buildGroupedProperty (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, const BindingContext &ctxt)
bool	buildIdProperty (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj)
bool	buildListProperty (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, const BindingContext &ctxt)
bool	buildObject (QDeclarativeParser::Object *obj, const BindingContext &)
bool	buildProperty (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, const BindingContext &)
bool	buildPropertyAssignment (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, const BindingContext &ctxt)
bool	buildPropertyInNamespace (QDeclarativeImportedNamespace *ns, QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, const BindingContext &)
bool	buildPropertyLiteralAssignment (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, QDeclarativeParser::Value *value, 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	buildScriptStringProperty (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, const BindingContext &ctxt)
bool	buildSignal (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, const BindingContext &)
bool	buildSubObject (QDeclarativeParser::Object *obj, const BindingContext &)
bool	buildValueTypeProperty (QObject *type, QDeclarativeParser::Object *obj, QDeclarativeParser::Object *baseObj, const BindingContext &ctxt)
bool	canCoerce (int to, QDeclarativeParser::Object *from)
	Returns true if from can be assigned to a (QObject) property of type to. More...
bool	checkDynamicMeta (QDeclarativeParser::Object *obj)
bool	checkValidId (QDeclarativeParser::Value *, const QString &)
bool	compileAlias (QMetaObjectBuilder &, QByteArray &data, QDeclarativeParser::Object *obj, const QDeclarativeParser::Object::DynamicProperty &)
void	compileTree (QDeclarativeParser::Object *tree)
bool	completeComponentBuild ()
ComponentCompileState	componentState (QDeclarativeParser::Object *)
int	componentTypeRef ()
QStringList	deferredProperties (QDeclarativeParser::Object *)
bool	doesPropertyExist (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj)
	Returns true if (value) property prop exists on obj, false otherwise. More...
void	dumpStats ()
void	genBindingAssignment (QDeclarativeParser::Value *binding, QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, QDeclarativeParser::Property *valueTypeProperty=0)
void	genComponent (QDeclarativeParser::Object *obj)
int	genContextCache ()
void	genListProperty (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj)
void	genLiteralAssignment (const QMetaProperty &prop, QDeclarativeParser::Value *value)
	Generate a store instruction for assigning literal v to property prop. More...
void	genObject (QDeclarativeParser::Object *obj)
void	genObjectBody (QDeclarativeParser::Object *obj)
void	genPropertyAssignment (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj, QDeclarativeParser::Property *valueTypeProperty=0)
int	genPropertyData (QDeclarativeParser::Property *prop)
void	genValueProperty (QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj)
int	genValueTypeData (QDeclarativeParser::Property *prop, QDeclarativeParser::Property *valueTypeProp)
void	genValueTypeProperty (QDeclarativeParser::Object *obj, QDeclarativeParser::Property *)
int	indexOfProperty (QDeclarativeParser::Object *, const QByteArray &, bool *notInRevision=0)
int	indexOfSignal (QDeclarativeParser::Object *, const QByteArray &, bool *notInRevision=0)
bool	mergeDynamicMetaProperties (QDeclarativeParser::Object *obj)
void	saveComponentState ()
bool	testLiteralAssignment (const QMetaProperty &prop, QDeclarativeParser::Value *value)
	Returns true if literal v can be assigned to property prop, otherwise false. More...
bool	testQualifiedEnumAssignment (const QMetaProperty &prop, QDeclarativeParser::Object *obj, QDeclarativeParser::Value *value, bool *isAssignment)

Static Private Functions
static void	reset (QDeclarativeCompiledData *)
	Resets data by clearing the lists that the QDeclarativeCompiler modifies. More...
static QDeclarativeType *	toQmlType (QDeclarativeParser::Object *from)

Properties
ComponentCompileState	compileState
ComponentStat	componentStat
QDeclarativeEngine *	engine
QDeclarativeEnginePrivate *	enginePrivate
QList< QDeclarativeError >	exceptions
QDeclarativeCompiledData *	output
QHash< QDeclarativeParser::Object *, ComponentCompileState >	savedCompileStates
QList< ComponentStat >	savedComponentStats
QDeclarativeTypeData *	unit
QDeclarativeParser::Object *	unitRoot

Detailed Description

Definition at line 151 of file qdeclarativecompiler_p.h.

Enumerations

DynamicMetaMode

enum QDeclarativeCompiler::DynamicMetaMode

private

Enumerator
IgnoreAliases
ResolveAliases
ForceCreation

Definition at line 242 of file qdeclarativecompiler_p.h.

{ IgnoreAliases, ResolveAliases, ForceCreation };

Constructors and Destructors

QDeclarativeCompiler()

QDeclarativeCompiler::QDeclarativeCompiler

(

)

Instantiate a new QDeclarativeCompiler.

Definition at line 89 of file qdeclarativecompiler.cpp.

: output(0), engine(0), unitRoot(0), unit(0)
{
}

Functions

addBindingReference()

void QDeclarativeCompiler::addBindingReference ( const BindingReference &  ref )

private

Definition at line 1796 of file qdeclarativecompiler.cpp.

Referenced by buildBinding(), and buildValueTypeProperty().

{
    Q_ASSERT(ref.value && !compileState.bindings.contains(ref.value));
    compileState.bindings.insert(ref.value, ref);
}

addId()

void QDeclarativeCompiler::addId ( const QString &  id, QDeclarativeParser::Object *  obj  )

private

Definition at line 1787 of file qdeclarativecompiler.cpp.

Referenced by buildComponent(), and buildIdProperty().

{
    Q_ASSERT(!compileState.ids.contains(id));
    Q_ASSERT(obj->id == id);
    obj->idIndex = compileState.ids.count();
    compileState.ids.insert(id, obj);
    compileState.idIndexes.insert(obj->idIndex, obj);
}

buildAttachedProperty()

bool QDeclarativeCompiler::buildAttachedProperty ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1823 of file qdeclarativecompiler.cpp.

Referenced by buildProperty(), and buildPropertyInNamespace().

{
    Q_ASSERT(prop->value);
    Q_ASSERT(prop->index != -1); // This is set in buildProperty()

    obj->addAttachedProperty(prop);

    COMPILE_CHECK(buildSubObject(prop->value, ctxt.incr()));

    return true;
}

buildBinding()

bool QDeclarativeCompiler::buildBinding ( QDeclarativeParser::Value *  value, QDeclarativeParser::Property *  prop, const BindingContext &  ctxt  )

private

Definition at line 2814 of file qdeclarativecompiler.cpp.

Referenced by buildListProperty(), and buildPropertyLiteralAssignment().

{
    Q_ASSERT(prop->index != -1);
    Q_ASSERT(prop->parent);
    Q_ASSERT(prop->parent->metaObject());

    QMetaProperty mp = prop->parent->metaObject()->property(prop->index);
    if (!mp.isWritable() && !QDeclarativeMetaType::isList(prop->type))
        COMPILE_EXCEPTION(prop, tr("Invalid property assignment: \"%1\" is a read-only property").arg(QString::fromUtf8(prop->name)));

    BindingReference reference;
    reference.expression = value->value;
    reference.property = prop;
    reference.value = value;
    reference.bindingContext = ctxt;
    addBindingReference(reference);

    return true;
}

buildComponent()

bool QDeclarativeCompiler::buildComponent ( QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1239 of file qdeclarativecompiler.cpp.

Referenced by buildObject().

{
    // The special "Component" element can only have the id property and a
    // default property, that actually defines the component's tree

    // Find, check and set the "id" property (if any)
    Property *idProp = 0;
    if (obj->properties.count() > 1 ||
       (obj->properties.count() == 1 && obj->properties.begin().key() != "id"))
        COMPILE_EXCEPTION(*obj->properties.begin(), tr("Component elements may not contain properties other than id"));
       
    if (obj->properties.count())
        idProp = *obj->properties.begin();

    if (idProp) {
       if (idProp->value || idProp->values.count() > 1 || idProp->values.at(0)->object) 
           COMPILE_EXCEPTION(idProp, tr("Invalid component id specification"));
       COMPILE_CHECK(checkValidId(idProp->values.first(), idProp->values.first()->primitive()))

        QString idVal = idProp->values.first()->primitive();

        if (compileState.ids.contains(idVal))
            COMPILE_EXCEPTION(idProp, tr("id is not unique"));

        obj->id = idVal;
        addId(idVal, obj);
    }

    // Check the Component tree is well formed
    if (obj->defaultProperty &&
       (obj->defaultProperty->value || obj->defaultProperty->values.count() > 1 ||
        (obj->defaultProperty->values.count() == 1 && !obj->defaultProperty->values.first()->object)))
        COMPILE_EXCEPTION(obj, tr("Invalid component body specification"));

    if (!obj->dynamicProperties.isEmpty())
        COMPILE_EXCEPTION(obj, tr("Component objects cannot declare new properties."));
    if (!obj->dynamicSignals.isEmpty())
        COMPILE_EXCEPTION(obj, tr("Component objects cannot declare new signals."));
    if (!obj->dynamicSlots.isEmpty())
        COMPILE_EXCEPTION(obj, tr("Component objects cannot declare new functions."));

    QDeclarativeParser::Object *root = 0;
    if (obj->defaultProperty && obj->defaultProperty->values.count())
        root = obj->defaultProperty->values.first()->object;

    if (!root)
        COMPILE_EXCEPTION(obj, tr("Cannot create empty component specification"));

    // Build the component tree
    COMPILE_CHECK(buildComponentFromRoot(root, ctxt));

    return true;
}

buildComponentFromRoot()

bool QDeclarativeCompiler::buildComponentFromRoot ( QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1294 of file qdeclarativecompiler.cpp.

Referenced by buildComponent().

{
    ComponentCompileState oldComponentCompileState = compileState;
    ComponentStat oldComponentStat = componentStat;

    compileState = ComponentCompileState();
    compileState.root = obj;

    componentStat = ComponentStat();
    componentStat.lineNumber = obj->location.start.line;

    if (obj)
        COMPILE_CHECK(buildObject(obj, ctxt));

    COMPILE_CHECK(completeComponentBuild());

    compileState = oldComponentCompileState;
    componentStat = oldComponentStat;

    return true;
}

buildDynamicMeta()

bool QDeclarativeCompiler::buildDynamicMeta ( QDeclarativeParser::Object *  obj, DynamicMetaMode  mode  )

private

Definition at line 2432 of file qdeclarativecompiler.cpp.

Referenced by buildObject(), buildPropertyOnAssignment(), and completeComponentBuild().

{
    Q_ASSERT(obj);
    Q_ASSERT(obj->metatype);

    if (mode != ForceCreation &&
        obj->dynamicProperties.isEmpty() &&
        obj->dynamicSignals.isEmpty() &&
        obj->dynamicSlots.isEmpty())
        return true;

    QByteArray dynamicData(sizeof(QDeclarativeVMEMetaData), (char)0);

    QByteArray newClassName = obj->metatype->className();
    newClassName.append("_QML_");
    int idx = classIndexCounter()->fetchAndAddRelaxed(1);
    newClassName.append(QByteArray::number(idx));
    if (compileState.root == obj) {
        QString path = output->url.path();
        int lastSlash = path.lastIndexOf(QLatin1Char('/'));
        if (lastSlash > -1) {
            QString nameBase = path.mid(lastSlash + 1, path.length()-lastSlash-5);
            if (!nameBase.isEmpty() && nameBase.at(0).isUpper())
                newClassName = nameBase.toUtf8() + "_QMLTYPE_" + QByteArray::number(idx);
        }
    }

    QMetaObjectBuilder builder;
    builder.setClassName(newClassName);
    builder.setFlags(QMetaObjectBuilder::DynamicMetaObject);

    bool hasAlias = false;
    for (int ii = 0; ii < obj->dynamicProperties.count(); ++ii) {
        const Object::DynamicProperty &p = obj->dynamicProperties.at(ii);

        int propIdx = obj->metaObject()->indexOfProperty(p.name.constData());
        if (-1 != propIdx) {
            QMetaProperty prop = obj->metaObject()->property(propIdx);
            if (prop.isFinal())
                COMPILE_EXCEPTION(&p, tr("Cannot override FINAL property"));
        }

        if (p.isDefaultProperty &&
            (p.type != Object::DynamicProperty::Alias ||
             mode == ResolveAliases))
            builder.addClassInfo("DefaultProperty", p.name);

        QByteArray type;
        int propertyType = 0;
        bool readonly = false;
        switch(p.type) {
        case Object::DynamicProperty::Alias:
            hasAlias = true;
            continue;
            break;
        case Object::DynamicProperty::CustomList:
        case Object::DynamicProperty::Custom:
            {
                QByteArray customTypeName;
                QDeclarativeType *qmltype = 0;
                QUrl url;
                if (!unit->imports().resolveType(p.customType, &qmltype, &url, 0, 0, 0)) 
                    COMPILE_EXCEPTION(&p, tr("Invalid property type"));

                if (!qmltype) {
                    QDeclarativeTypeData *tdata = enginePrivate->typeLoader.get(url);
                    Q_ASSERT(tdata);
                    Q_ASSERT(tdata->isComplete());

                    QDeclarativeCompiledData *data = tdata->compiledData();
                    customTypeName = data->root->className();
                    data->release();
                    tdata->release();
                } else {
                    customTypeName = qmltype->typeName();
                }

                if (p.type == Object::DynamicProperty::Custom) {
                    type = customTypeName + '*';
                    propertyType = QMetaType::QObjectStar;
                } else {
                    readonly = true;
                    type = "QDeclarativeListProperty<";
                    type.append(customTypeName);
                    type.append(">");
                    propertyType = qMetaTypeId<QDeclarativeListProperty<QObject> >();
                }
            }
            break;
        case Object::DynamicProperty::Variant:
            propertyType = -1;
            type = "QVariant";
            break;
        case Object::DynamicProperty::Int:
            propertyType = QVariant::Int;
            type = "int";
            break;
        case Object::DynamicProperty::Bool:
            propertyType = QVariant::Bool;
            type = "bool";
            break;
        case Object::DynamicProperty::Real:
            propertyType = QVariant::Double;
            type = "double";
            break;
        case Object::DynamicProperty::String:
            propertyType = QVariant::String;
            type = "QString";
            break;
        case Object::DynamicProperty::Url:
            propertyType = QVariant::Url;
            type = "QUrl";
            break;
        case Object::DynamicProperty::Color:
            propertyType = QVariant::Color;
            type = "QColor";
            break;
        case Object::DynamicProperty::Time:
            propertyType = QVariant::Time;
            type = "QTime";
            break;
        case Object::DynamicProperty::Date:
            propertyType = QVariant::Date;
            type = "QDate";
            break;
        case Object::DynamicProperty::DateTime:
            propertyType = QVariant::DateTime;
            type = "QDateTime";
            break;
        }

        ((QDeclarativeVMEMetaData *)dynamicData.data())->propertyCount++;
        QDeclarativeVMEMetaData::PropertyData propertyData = { propertyType };
        dynamicData.append((char *)&propertyData, sizeof(propertyData));

        builder.addSignal(p.name + "Changed()");
        QMetaPropertyBuilder propBuilder = 
            builder.addProperty(p.name, type, builder.methodCount() - 1);
        propBuilder.setWritable(!readonly);
    }

    for (int ii = 0; ii < obj->dynamicProperties.count(); ++ii) {
        const Object::DynamicProperty &p = obj->dynamicProperties.at(ii);

        if (p.type == Object::DynamicProperty::Alias) {
            if (mode == ResolveAliases) {
                ((QDeclarativeVMEMetaData *)dynamicData.data())->aliasCount++;
                COMPILE_CHECK(compileAlias(builder, dynamicData, obj, p));
            } else {
                // Need a fake signal so that the metaobject remains consistent across
                // the resolve and non-resolve alias runs
                builder.addSignal(p.name + "Changed()");
            }
        }
    }

    for (int ii = 0; ii < obj->dynamicSignals.count(); ++ii) {
        const Object::DynamicSignal &s = obj->dynamicSignals.at(ii);
        QByteArray sig(s.name + '(');
        for (int jj = 0; jj < s.parameterTypes.count(); ++jj) {
            if (jj) sig.append(',');
            sig.append(s.parameterTypes.at(jj));
        }
        sig.append(')');
        QMetaMethodBuilder b = builder.addSignal(sig);
        b.setParameterNames(s.parameterNames);
        ((QDeclarativeVMEMetaData *)dynamicData.data())->signalCount++;
    }

    QStringList funcScripts;

    for (int ii = 0; ii < obj->dynamicSlots.count(); ++ii) {
        Object::DynamicSlot &s = obj->dynamicSlots[ii];
        QByteArray sig(s.name + '(');
        QString funcScript(QLatin1String("(function ") + s.name + QLatin1Char('('));

        for (int jj = 0; jj < s.parameterNames.count(); ++jj) {
            if (jj) { 
                sig.append(',');
                funcScript.append(QLatin1Char(','));
            }
            funcScript.append(QLatin1String(s.parameterNames.at(jj)));
            sig.append("QVariant");
        }
        sig.append(')');
        funcScript.append(QLatin1Char(')'));
        funcScript.append(s.body);
        funcScript.append(QLatin1Char(')'));
        funcScripts << funcScript;

        QMetaMethodBuilder b = builder.addSlot(sig);
        b.setReturnType("QVariant");
        b.setParameterNames(s.parameterNames);

        ((QDeclarativeVMEMetaData *)dynamicData.data())->methodCount++;
        QDeclarativeVMEMetaData::MethodData methodData =
             { s.parameterNames.count(), 0, funcScript.length(), s.location.start.line };

        dynamicData.append((char *)&methodData, sizeof(methodData));
    }

    for (int ii = 0; ii < obj->dynamicSlots.count(); ++ii) {
        const QString &funcScript = funcScripts.at(ii);
        QDeclarativeVMEMetaData::MethodData *data =
            ((QDeclarativeVMEMetaData *)dynamicData.data())->methodData() + ii;

        data->bodyOffset = dynamicData.size();

        dynamicData.append((const char *)funcScript.constData(),
                           (funcScript.length() * sizeof(QChar)));
    }

    obj->metadata = builder.toRelocatableData();
    builder.fromRelocatableData(&obj->extObject, obj->metatype, obj->metadata);

    if (mode == IgnoreAliases && hasAlias)
        compileState.aliasingObjects << obj;

    obj->synthdata = dynamicData;

    if (obj->synthCache) {
        obj->synthCache->release();
        obj->synthCache = 0;
    }

    if (obj->type != -1) {
        QDeclarativePropertyCache *cache = output->types[obj->type].createPropertyCache(engine)->copy();
        cache->append(engine, &obj->extObject, QDeclarativePropertyCache::Data::NoFlags,
                      QDeclarativePropertyCache::Data::IsVMEFunction, 
                      QDeclarativePropertyCache::Data::IsVMESignal);
        obj->synthCache = cache;
    }

    return true;
}

buildGroupedProperty()

bool QDeclarativeCompiler::buildGroupedProperty ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1844 of file qdeclarativecompiler.cpp.

Referenced by buildProperty().

{
    Q_ASSERT(prop->type != 0);
    Q_ASSERT(prop->index != -1);

    if (QDeclarativeValueTypeFactory::isValueType(prop->type)) {
        if (prop->type >= 0 /* QVariant == -1 */ && enginePrivate->valueTypes[prop->type]) {

            if (prop->values.count()) {
                if (prop->values.at(0)->location < prop->value->location) {
                    COMPILE_EXCEPTION(prop->value, tr( "Property has already been assigned a value"));
                } else {
                    COMPILE_EXCEPTION(prop->values.at(0), tr( "Property has already been assigned a value"));
                }
            }

            if (!obj->metaObject()->property(prop->index).isWritable()) {
                COMPILE_EXCEPTION(prop, tr( "Invalid property assignment: \"%1\" is a read-only property").arg(QString::fromUtf8(prop->name)));
            }


            if (prop->isAlias) {
                foreach (Property *vtProp, prop->value->properties)
                    vtProp->isAlias = true;
            }

            COMPILE_CHECK(buildValueTypeProperty(enginePrivate->valueTypes[prop->type],
                                                 prop->value, obj, ctxt.incr()));
            obj->addValueTypeProperty(prop);
        } else {
            COMPILE_EXCEPTION(prop, tr("Invalid grouped property access"));
        }

    } else {
        // Load the nested property's meta type
        prop->value->metatype = enginePrivate->metaObjectForType(prop->type);
        if (!prop->value->metatype)
            COMPILE_EXCEPTION(prop, tr("Invalid grouped property access"));

        if (prop->values.count()) 
            COMPILE_EXCEPTION(prop->values.at(0), tr( "Cannot assign a value directly to a grouped property"));

        obj->addGroupedProperty(prop);

        COMPILE_CHECK(buildSubObject(prop->value, ctxt.incr()));
    }

    return true;
}

buildIdProperty()

bool QDeclarativeCompiler::buildIdProperty ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj  )

private

Definition at line 1763 of file qdeclarativecompiler.cpp.

Referenced by buildProperty().

{
    if (prop->value ||
        prop->values.count() > 1 ||
        prop->values.at(0)->object)
        COMPILE_EXCEPTION(prop, tr("Invalid use of id property"));

    QDeclarativeParser::Value *idValue = prop->values.at(0);
    QString val = idValue->primitive();

    COMPILE_CHECK(checkValidId(idValue, val));

    if (compileState.ids.contains(val))
        COMPILE_EXCEPTION(prop, tr("id is not unique"));

    prop->values.at(0)->type = Value::Id;

    obj->id = val;
    addId(val, obj);

    return true;
}

buildListProperty()

bool QDeclarativeCompiler::buildListProperty ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1966 of file qdeclarativecompiler.cpp.

Referenced by buildProperty().

{
    Q_ASSERT(enginePrivate->isList(prop->type));

    int t = prop->type;

    obj->addValueProperty(prop);

    int listType = enginePrivate->listType(t);
    bool listTypeIsInterface = QDeclarativeMetaType::isInterface(listType);

    bool assignedBinding = false;
    for (int ii = 0; ii < prop->values.count(); ++ii) {
        QDeclarativeParser::Value *v = prop->values.at(ii);
        if (v->object) {
            v->type = Value::CreatedObject;
            COMPILE_CHECK(buildObject(v->object, ctxt));

            // We check object coercian here.  We check interface assignment
            // at runtime.
            if (!listTypeIsInterface) {
                if (!canCoerce(listType, v->object)) {
                    COMPILE_EXCEPTION(v, tr("Cannot assign object to list"));
                }
            }

        } else if (v->value.isScript()) {
            if (assignedBinding)
                COMPILE_EXCEPTION(v, tr("Can only assign one binding to lists"));

            assignedBinding = true;
            COMPILE_CHECK(buildBinding(v, prop, ctxt));
            v->type = Value::PropertyBinding;
        } else {
            COMPILE_EXCEPTION(v, tr("Cannot assign primitives to lists"));
        }
    }

    return true;
}

buildObject()

bool QDeclarativeCompiler::buildObject ( QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 736 of file qdeclarativecompiler.cpp.

Referenced by buildComponentFromRoot(), buildListProperty(), buildPropertyObjectAssignment(), buildPropertyOnAssignment(), buildSignal(), and compileTree().

{
    componentStat.objects++;

    Q_ASSERT (obj->type != -1);
    const QDeclarativeCompiledData::TypeReference &tr =
        output->types.at(obj->type);
    obj->metatype = tr.metaObject();

    if (tr.component)
        obj->url = tr.component->url;
    if (tr.type)
        obj->typeName = tr.type->qmlTypeName();
    obj->className = tr.className;

    // This object is a "Component" element
    if (tr.type && obj->metatype == &QDeclarativeComponent::staticMetaObject) {
        COMPILE_CHECK(buildComponent(obj, ctxt));
        return true;
    } 

    // Object instantiations reset the binding context
    BindingContext objCtxt(obj);

    // Create the synthesized meta object, ignoring aliases
    COMPILE_CHECK(checkDynamicMeta(obj)); 
    COMPILE_CHECK(mergeDynamicMetaProperties(obj));
    COMPILE_CHECK(buildDynamicMeta(obj, IgnoreAliases));

    // Find the native type and check for the QDeclarativeParserStatus interface
    QDeclarativeType *type = toQmlType(obj);
    Q_ASSERT(type);
    obj->parserStatusCast = type->parserStatusCast();
    if (obj->parserStatusCast != -1)
        compileState.parserStatusCount++;

    // Check if this is a custom parser type.  Custom parser types allow
    // assignments to non-existent properties.  These assignments are then
    // compiled by the type.
    bool isCustomParser = output->types.at(obj->type).type &&
                          output->types.at(obj->type).type->customParser() != 0;
    QList<QDeclarativeCustomParserProperty> customProps;

    // Fetch the list of deferred properties
    QStringList deferredList = deferredProperties(obj);

    // Must do id property first.  This is to ensure that the id given to any
    // id reference created matches the order in which the objects are
    // instantiated
    foreach(Property *prop, obj->properties) {
        if (prop->name == "id") {
            COMPILE_CHECK(buildProperty(prop, obj, objCtxt));
            break;
        }
    }

    // Merge 
    Property *defaultProperty = 0;
    Property *skipProperty = 0;
    if (obj->defaultProperty) {
        const QMetaObject *metaObject = obj->metaObject();
        Q_ASSERT(metaObject);
        QMetaProperty p = QDeclarativeMetaType::defaultProperty(metaObject);
        if (p.name()) {
            Property *explicitProperty = obj->getProperty(p.name(), false);
            if (explicitProperty && !explicitProperty->value) {
                skipProperty = explicitProperty;

                defaultProperty = new Property;
                defaultProperty->parent = obj;
                defaultProperty->isDefault = true;
                defaultProperty->location = obj->defaultProperty->location;
                defaultProperty->listValueRange = obj->defaultProperty->listValueRange;
                defaultProperty->listCommaPositions = obj->defaultProperty->listCommaPositions;

                defaultProperty->values  = obj->defaultProperty->values;
                defaultProperty->values += explicitProperty->values;
                foreach(QDeclarativeParser::Value *value, defaultProperty->values)
                    value->addref();
                qSort(defaultProperty->values.begin(), defaultProperty->values.end(), ValuePtrLessThan);

            } else {
                defaultProperty = obj->defaultProperty;
                defaultProperty->addref();
            }
        } else {
            defaultProperty = obj->defaultProperty;
            defaultProperty->addref();
        }
    }

    QDeclarativeCustomParser *cp = 0;
    if (isCustomParser)
        cp = output->types.at(obj->type).type->customParser();

    // Build all explicit properties specified
    foreach(Property *prop, obj->properties) {

        if (prop == skipProperty)
            continue;
        if (prop->name == "id")
            continue;

        bool canDefer = false;
        if (isCustomParser) {
            if (doesPropertyExist(prop, obj) && 
                (!(cp->flags() & QDeclarativeCustomParser::AcceptsAttachedProperties) ||
                 !isAttachedPropertyName(prop->name))) {
                int ids = compileState.ids.count();
                COMPILE_CHECK(buildProperty(prop, obj, objCtxt));
                canDefer = ids == compileState.ids.count();
            } else {
                customProps << QDeclarativeCustomParserNodePrivate::fromProperty(prop);
            }
        } else {
            if (isSignalPropertyName(prop->name)) {
                COMPILE_CHECK(buildSignal(prop,obj,objCtxt));
            } else {
                int ids = compileState.ids.count();
                COMPILE_CHECK(buildProperty(prop, obj, objCtxt));
                canDefer = ids == compileState.ids.count();
            }
        }

        if (canDefer && !deferredList.isEmpty() &&
            deferredList.contains(QString::fromUtf8(prop->name)))
            prop->isDeferred = true;

    }

    // Build the default property
    if (defaultProperty)  {
        Property *prop = defaultProperty;

        bool canDefer = false;
        if (isCustomParser) {
            if (doesPropertyExist(prop, obj)) {
                int ids = compileState.ids.count();
                COMPILE_CHECK(buildProperty(prop, obj, objCtxt));
                canDefer = ids == compileState.ids.count();
            } else {
                customProps << QDeclarativeCustomParserNodePrivate::fromProperty(prop);
            }
        } else {
            int ids = compileState.ids.count();
            COMPILE_CHECK(buildProperty(prop, obj, objCtxt));
            canDefer = ids == compileState.ids.count();
        }

        if (canDefer && !deferredList.isEmpty() &&
            deferredList.contains(QString::fromUtf8(prop->name)))
            prop->isDeferred = true;
    }

    if (defaultProperty) 
        defaultProperty->release();

    // Compile custom parser parts
    if (isCustomParser && !customProps.isEmpty()) {
        cp->clearErrors();
        cp->compiler = this;
        cp->object = obj;
        obj->custom = cp->compile(customProps);
        cp->compiler = 0;
        cp->object = 0;
        foreach (QDeclarativeError err, cp->errors()) {
            err.setUrl(output->url);
            exceptions << err;
        }
    }

    return true;
}

buildProperty()

bool QDeclarativeCompiler::buildProperty ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1436 of file qdeclarativecompiler.cpp.

Referenced by buildObject(), buildSignal(), and buildSubObject().

{
    if (prop->isEmpty())
        COMPILE_EXCEPTION(prop, tr("Empty property assignment"));

    const QMetaObject *metaObject = obj->metaObject();
    Q_ASSERT(metaObject);

    if (isAttachedPropertyName(prop->name)) {
        // Setup attached property data

        if (ctxt.isSubContext()) {
            // Attached properties cannot be used on sub-objects.  Sub-objects
            // always exist in a binding sub-context, which is what we test
            // for here.
            COMPILE_EXCEPTION(prop, tr("Attached properties cannot be used here"));
        }

        QDeclarativeType *type = 0;
        QDeclarativeImportedNamespace *typeNamespace = 0;
        unit->imports().resolveType(prop->name, &type, 0, 0, 0, &typeNamespace);

        if (typeNamespace) {
            // ### We might need to indicate that this property is a namespace 
            // for the DOM API
            COMPILE_CHECK(buildPropertyInNamespace(typeNamespace, prop, obj, 
                                                   ctxt));
            return true;
        } else if (!type || !type->attachedPropertiesType())  {
            COMPILE_EXCEPTION(prop, tr("Non-existent attached object"));
        }

        if (!prop->value)
            COMPILE_EXCEPTION(prop, tr("Invalid attached object assignment"));

        Q_ASSERT(type->attachedPropertiesFunction());
        prop->index = type->attachedPropertiesId();
        prop->value->metatype = type->attachedPropertiesType();
    } else {
        // Setup regular property data
        QMetaProperty p;

        if (prop->isDefault) {
            p = QDeclarativeMetaType::defaultProperty(metaObject);

            if (p.name()) {
                prop->index = p.propertyIndex();
                prop->name = p.name();
            }

        } else {
            bool notInRevision = false;
            prop->index = indexOfProperty(obj, prop->name, &notInRevision);
            if (prop->index == -1 && notInRevision) {
                const QList<QDeclarativeTypeData::TypeReference>  &resolvedTypes = unit->resolvedTypes();
                const QDeclarativeTypeData::TypeReference &type = resolvedTypes.at(obj->type);
                if (type.type) {
                    COMPILE_EXCEPTION(prop, tr("\"%1.%2\" is not available in %3 %4.%5.").arg(QString::fromUtf8(obj->className)).arg(QString::fromUtf8(prop->name)).arg(QString::fromUtf8(type.type->module())).arg(type.majorVersion).arg(type.minorVersion));
                } else {
                    COMPILE_EXCEPTION(prop, tr("\"%1.%2\" is not available due to component versioning.").arg(QString::fromUtf8(obj->className)).arg(QString::fromUtf8(prop->name)));
                }
            }

            if (prop->index != -1) {
                p = metaObject->property(prop->index);
                Q_ASSERT(p.name());

                if (!p.isScriptable()) {
                    prop->index = -1;
                    p = QMetaProperty();
                }
            }
        }

        // We can't error here as the "id" property does not require a
        // successful index resolution
        if (p.name()) 
            prop->type = p.userType();

        // Check if this is an alias
        if (prop->index != -1 && 
            prop->parent && 
            prop->parent->type != -1 && 
            output->types.at(prop->parent->type).component) {

            QDeclarativePropertyCache *cache = output->types.at(prop->parent->type).component->rootPropertyCache;
            if (cache && cache->property(prop->index) && 
                cache->property(prop->index)->flags & QDeclarativePropertyCache::Data::IsAlias)
                prop->isAlias = true;
        }

        if (prop->index != -1 && !prop->values.isEmpty()) 
            prop->parent->setBindingBit(prop->index);
    }

    if (!prop->isDefault && prop->name == "id" && !ctxt.isSubContext()) {

        // The magic "id" behavior doesn't apply when "id" is resolved as a
        // default property or to sub-objects (which are always in binding
        // sub-contexts)
        COMPILE_CHECK(buildIdProperty(prop, obj));
        if (prop->type == QVariant::String &&
            prop->values.at(0)->value.isString())
            COMPILE_CHECK(buildPropertyAssignment(prop, obj, ctxt));

    } else if (isAttachedPropertyName(prop->name)) {

        COMPILE_CHECK(buildAttachedProperty(prop, obj, ctxt));

    } else if (prop->index == -1) {

        if (prop->isDefault) {
            COMPILE_EXCEPTION(prop->values.first(), tr("Cannot assign to non-existent default property"));
        } else {
            COMPILE_EXCEPTION(prop, tr("Cannot assign to non-existent property \"%1\"").arg(QString::fromUtf8(prop->name)));
        }

    } else if (prop->value) {

        COMPILE_CHECK(buildGroupedProperty(prop, obj, ctxt));

    } else if (enginePrivate->isList(prop->type)) {

        COMPILE_CHECK(buildListProperty(prop, obj, ctxt));

    } else if (prop->type == qMetaTypeId<QDeclarativeScriptString>()) {

        COMPILE_CHECK(buildScriptStringProperty(prop, obj, ctxt));

    } else {

        COMPILE_CHECK(buildPropertyAssignment(prop, obj, ctxt));

    }

    return true;
}

buildPropertyAssignment()

bool QDeclarativeCompiler::buildPropertyAssignment ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 2026 of file qdeclarativecompiler.cpp.

Referenced by buildProperty().

{
    obj->addValueProperty(prop);

    if (prop->values.count() > 1)
        COMPILE_EXCEPTION(prop->values.at(0), tr( "Cannot assign multiple values to a singular property") );

    for (int ii = 0; ii < prop->values.count(); ++ii) {
        QDeclarativeParser::Value *v = prop->values.at(ii);
        if (v->object) {

            COMPILE_CHECK(buildPropertyObjectAssignment(prop, obj, v, ctxt));

        } else {

            COMPILE_CHECK(buildPropertyLiteralAssignment(prop, obj, v, ctxt));

        }
    }

    for (int ii = 0; ii < prop->onValues.count(); ++ii) {
        QDeclarativeParser::Value *v = prop->onValues.at(ii);

        Q_ASSERT(v->object);
        COMPILE_CHECK(buildPropertyOnAssignment(prop, obj, obj, v, ctxt));
    }

    return true;
}

buildPropertyInNamespace()

bool QDeclarativeCompiler::buildPropertyInNamespace ( QDeclarativeImportedNamespace *  ns, QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1576 of file qdeclarativecompiler.cpp.

Referenced by buildProperty().

{
    if (!nsProp->value)
        COMPILE_EXCEPTION(nsProp, tr("Invalid use of namespace"));

    foreach (Property *prop, nsProp->value->properties) {

        if (!isAttachedPropertyName(prop->name))
            COMPILE_EXCEPTION(prop, tr("Not an attached property name"));

        // Setup attached property data

        QDeclarativeType *type = 0;
        unit->imports().resolveType(ns, prop->name, &type, 0, 0, 0);

        if (!type || !type->attachedPropertiesType()) 
            COMPILE_EXCEPTION(prop, tr("Non-existent attached object"));

        if (!prop->value)
            COMPILE_EXCEPTION(prop, tr("Invalid attached object assignment"));

        Q_ASSERT(type->attachedPropertiesFunction());
        prop->index = type->index();
        prop->value->metatype = type->attachedPropertiesType();

        COMPILE_CHECK(buildAttachedProperty(prop, obj, ctxt));
    }

    return true;
}

buildPropertyLiteralAssignment()

bool QDeclarativeCompiler::buildPropertyLiteralAssignment ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, QDeclarativeParser::Value *  value, const BindingContext &  ctxt  )

private

Definition at line 2183 of file qdeclarativecompiler.cpp.

Referenced by buildPropertyAssignment().

{
    Q_ASSERT(prop->index != -1);

    if (v->value.isScript()) {

        //optimization for <Type>.<EnumValue> enum assignments
        bool isEnumAssignment = false;
        COMPILE_CHECK(testQualifiedEnumAssignment(obj->metaObject()->property(prop->index), obj, v, &isEnumAssignment));
        if (isEnumAssignment) {
            v->type = Value::Literal;
            return true;
        }

        COMPILE_CHECK(buildBinding(v, prop, ctxt));

        v->type = Value::PropertyBinding;

    } else {

        COMPILE_CHECK(testLiteralAssignment(obj->metaObject()->property(prop->index), v));

        v->type = Value::Literal;
    }

    return true;
}

buildPropertyObjectAssignment()

bool QDeclarativeCompiler::buildPropertyObjectAssignment ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, QDeclarativeParser::Value *  value, const BindingContext &  ctxt  )

private

Definition at line 2059 of file qdeclarativecompiler.cpp.

Referenced by buildPropertyAssignment().

{
    Q_ASSERT(prop->index != -1);
    Q_ASSERT(v->object->type != -1);

    if (!obj->metaObject()->property(prop->index).isWritable())
        COMPILE_EXCEPTION(v, tr("Invalid property assignment: \"%1\" is a read-only property").arg(QString::fromUtf8(prop->name)));

    if (QDeclarativeMetaType::isInterface(prop->type)) {

        // Assigning an object to an interface ptr property
        COMPILE_CHECK(buildObject(v->object, ctxt));

        v->type = Value::CreatedObject;

    } else if (prop->type == -1) {

        // Assigning an object to a QVariant
        COMPILE_CHECK(buildObject(v->object, ctxt));

        v->type = Value::CreatedObject;
    } else {
        // Normally buildObject() will set this up, but we need the static
        // meta object earlier to test for assignability.  It doesn't matter
        // that there may still be outstanding synthesized meta object changes
        // on this type, as they are not relevant for assignability testing
        v->object->metatype = output->types.at(v->object->type).metaObject();
        Q_ASSERT(v->object->metaObject());

        // We want to raw metaObject here as the raw metaobject is the
        // actual property type before we applied any extensions that might
        // effect the properties on the type, but don't effect assignability
        const QMetaObject *propertyMetaObject = enginePrivate->rawMetaObjectForType(prop->type);

        // Will be true if the assgned type inherits propertyMetaObject
        bool isAssignable = false;
        // Determine isAssignable value
        if (propertyMetaObject) {
            const QMetaObject *c = v->object->metatype;
            while(c) {
                isAssignable |= (QDeclarativePropertyPrivate::equal(c, propertyMetaObject));
                c = c->superClass();
            }
        }

        if (isAssignable) {
            // Simple assignment
            COMPILE_CHECK(buildObject(v->object, ctxt));

            v->type = Value::CreatedObject;
        } else if (propertyMetaObject == &QDeclarativeComponent::staticMetaObject) {
            // Automatic "Component" insertion
            QDeclarativeParser::Object *root = v->object;
            QDeclarativeParser::Object *component = new QDeclarativeParser::Object;
            component->type = componentTypeRef();
            component->typeName = "Qt/Component";
            component->metatype = &QDeclarativeComponent::staticMetaObject;
            component->location = root->location;
            QDeclarativeParser::Value *componentValue = new QDeclarativeParser::Value;
            componentValue->object = root;
            component->getDefaultProperty()->addValue(componentValue);
            v->object = component;
            COMPILE_CHECK(buildPropertyObjectAssignment(prop, obj, v, ctxt));
        } else {
            COMPILE_EXCEPTION(v->object, tr("Cannot assign object to property"));
        }
    }

    return true;
}

buildPropertyOnAssignment()

bool QDeclarativeCompiler::buildPropertyOnAssignment ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, QDeclarativeParser::Object *  baseObj, QDeclarativeParser::Value *  value, const BindingContext &  ctxt  )

private

Definition at line 2139 of file qdeclarativecompiler.cpp.

Referenced by buildPropertyAssignment(), and buildValueTypeProperty().

{
    Q_ASSERT(prop->index != -1);
    Q_ASSERT(v->object->type != -1);

    if (!obj->metaObject()->property(prop->index).isWritable())
        COMPILE_EXCEPTION(v, tr("Invalid property assignment: \"%1\" is a read-only property").arg(QString::fromUtf8(prop->name)));


    // Normally buildObject() will set this up, but we need the static
    // meta object earlier to test for assignability.  It doesn't matter
    // that there may still be outstanding synthesized meta object changes
    // on this type, as they are not relevant for assignability testing
    v->object->metatype = output->types.at(v->object->type).metaObject();
    Q_ASSERT(v->object->metaObject());

    // Will be true if the assigned type inherits QDeclarativePropertyValueSource
    bool isPropertyValue = false;
    // Will be true if the assigned type inherits QDeclarativePropertyValueInterceptor
    bool isPropertyInterceptor = false;
    if (QDeclarativeType *valueType = toQmlType(v->object)) {
        isPropertyValue = valueType->propertyValueSourceCast() != -1;
        isPropertyInterceptor = valueType->propertyValueInterceptorCast() != -1;
    }

    if (isPropertyValue || isPropertyInterceptor) {
        // Assign as a property value source
        COMPILE_CHECK(buildObject(v->object, ctxt));

        if (isPropertyInterceptor && prop->parent->synthdata.isEmpty())
            buildDynamicMeta(baseObj, ForceCreation);
        v->type = isPropertyValue ? Value::ValueSource : Value::ValueInterceptor;
    } else {
        COMPILE_EXCEPTION(v, tr("\"%1\" cannot operate on \"%2\"").arg(QString::fromUtf8(v->object->typeName)).arg(QString::fromUtf8(prop->name.constData())));
    }

    return true;
}

buildScriptStringProperty()

bool QDeclarativeCompiler::buildScriptStringProperty ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 2010 of file qdeclarativecompiler.cpp.

Referenced by buildProperty().

{
    if (prop->values.count() > 1) 
        COMPILE_EXCEPTION(prop->values.at(1), tr( "Cannot assign multiple values to a script property"));

    if (prop->values.at(0)->object)
        COMPILE_EXCEPTION(prop->values.at(0), tr( "Invalid property assignment: script expected"));

    obj->addScriptStringProperty(prop, ctxt.stack);

    return true;
}

buildSignal()

bool QDeclarativeCompiler::buildSignal ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1353 of file qdeclarativecompiler.cpp.

Referenced by buildObject(), and buildSubObject().

{
    Q_ASSERT(obj->metaObject());

    QByteArray name = prop->name;
    Q_ASSERT(name.startsWith("on"));
    name = name.mid(2);
    if(name[0] >= 'A' && name[0] <= 'Z')
        name[0] = name[0] - 'A' + 'a';

    bool notInRevision = false;
    int sigIdx = indexOfSignal(obj, name, &notInRevision);

    if (sigIdx == -1) {

        if (notInRevision && -1 == indexOfProperty(obj, prop->name, 0)) {
            Q_ASSERT(obj->type != -1);
            const QList<QDeclarativeTypeData::TypeReference>  &resolvedTypes = unit->resolvedTypes();
            const QDeclarativeTypeData::TypeReference &type = resolvedTypes.at(obj->type);
            if (type.type) {
                COMPILE_EXCEPTION(prop, tr("\"%1.%2\" is not available in %3 %4.%5.").arg(QString::fromUtf8(obj->className)).arg(QString::fromUtf8(prop->name)).arg(QString::fromUtf8(type.type->module())).arg(type.majorVersion).arg(type.minorVersion));
            } else {
                COMPILE_EXCEPTION(prop, tr("\"%1.%2\" is not available due to component versioning.").arg(QString::fromUtf8(obj->className)).arg(QString::fromUtf8(prop->name)));
            }
        }

        // If the "on<Signal>" name doesn't resolve into a signal, try it as a
        // property.
        COMPILE_CHECK(buildProperty(prop, obj, ctxt));

    }  else {

        if (prop->value || prop->values.count() != 1)
            COMPILE_EXCEPTION(prop, tr("Incorrectly specified signal assignment"));

        prop->index = sigIdx;
        obj->addSignalProperty(prop);

        if (prop->values.at(0)->object) {
            COMPILE_CHECK(buildObject(prop->values.at(0)->object, ctxt));
            prop->values.at(0)->type = Value::SignalObject;
        } else {
            prop->values.at(0)->type = Value::SignalExpression;

            if (!prop->values.at(0)->value.isScript())
                COMPILE_EXCEPTION(prop, tr("Cannot assign a value to a signal (expecting a script to be run)"));

            QString script = prop->values.at(0)->value.asScript().trimmed();
            if (script.isEmpty())
                COMPILE_EXCEPTION(prop, tr("Empty signal assignment"));

            compileState.signalExpressions.insert(prop->values.at(0), ctxt);
        }
    }

    return true;
}

buildSubObject()

bool QDeclarativeCompiler::buildSubObject ( QDeclarativeParser::Object *  obj, const BindingContext &  ctxt  )

private

Definition at line 1321 of file qdeclarativecompiler.cpp.

Referenced by buildAttachedProperty(), and buildGroupedProperty().

{
    Q_ASSERT(obj->metatype);
    Q_ASSERT(!obj->defaultProperty);
    Q_ASSERT(ctxt.isSubContext()); // sub-objects must always be in a binding
                                   // sub-context

    foreach(Property *prop, obj->properties) {
        if (isSignalPropertyName(prop->name)) {
            COMPILE_CHECK(buildSignal(prop, obj, ctxt));
        } else {
            COMPILE_CHECK(buildProperty(prop, obj, ctxt));
        }
    }

    return true;
}

buildValueTypeProperty()

bool QDeclarativeCompiler::buildValueTypeProperty ( QObject *  type, QDeclarativeParser::Object *  obj, QDeclarativeParser::Object *  baseObj, const BindingContext &  ctxt  )

private

Definition at line 1896 of file qdeclarativecompiler.cpp.

Referenced by buildGroupedProperty().

{
    if (obj->defaultProperty)
        COMPILE_EXCEPTION(obj, tr("Invalid property use"));
    obj->metatype = type->metaObject();

    foreach (Property *prop, obj->properties) {
        int idx = type->metaObject()->indexOfProperty(prop->name.constData());
        if (idx == -1)
            COMPILE_EXCEPTION(prop, tr("Cannot assign to non-existent property \"%1\"").arg(QString::fromUtf8(prop->name)));
        QMetaProperty p = type->metaObject()->property(idx);
        if (!p.isScriptable())
            COMPILE_EXCEPTION(prop, tr("Cannot assign to non-existent property \"%1\"").arg(QString::fromUtf8(prop->name)));
        prop->index = idx;
        prop->type = p.userType();
        prop->isValueTypeSubProperty = true;

        if (prop->value)
            COMPILE_EXCEPTION(prop, tr("Property assignment expected"));

        if (prop->values.count() > 1) {
            COMPILE_EXCEPTION(prop, tr("Single property assignment expected"));
        } else if (prop->values.count()) {
            QDeclarativeParser::Value *value = prop->values.at(0);

            if (value->object) {
                COMPILE_EXCEPTION(prop, tr("Unexpected object assignment"));
            } else if (value->value.isScript()) {
                // ### Check for writability

                //optimization for <Type>.<EnumValue> enum assignments
                bool isEnumAssignment = false;
                COMPILE_CHECK(testQualifiedEnumAssignment(p, obj, value, &isEnumAssignment));
                if (isEnumAssignment) {
                    value->type = Value::Literal;
                } else {
                    BindingReference reference;
                    reference.expression = value->value;
                    reference.property = prop;
                    reference.value = value;
                    reference.bindingContext = ctxt;
                    reference.bindingContext.owner++;
                    addBindingReference(reference);
                    value->type = Value::PropertyBinding;
                }
            } else  {
                COMPILE_CHECK(testLiteralAssignment(p, value));
                value->type = Value::Literal;
            }
        }

        for (int ii = 0; ii < prop->onValues.count(); ++ii) {
            QDeclarativeParser::Value *v = prop->onValues.at(ii);
            Q_ASSERT(v->object);

            COMPILE_CHECK(buildPropertyOnAssignment(prop, obj, baseObj, v, ctxt)); 
        }

        obj->addValueProperty(prop);
    }

    return true;
}

canCoerce()

bool QDeclarativeCompiler::canCoerce ( int  to, QDeclarativeParser::Object *  from  )

private

Returns true if from can be assigned to a (QObject) property of type to.

Definition at line 3048 of file qdeclarativecompiler.cpp.

Referenced by buildListProperty().

{
    const QMetaObject *toMo = 
        enginePrivate->rawMetaObjectForType(to);
    const QMetaObject *fromMo = from->metaObject();

    while (fromMo) {
        if (QDeclarativePropertyPrivate::equal(fromMo, toMo))
            return true;
        fromMo = fromMo->superClass();
    }
    return false;
}

checkDynamicMeta()

bool QDeclarativeCompiler::checkDynamicMeta ( QDeclarativeParser::Object *  obj )

private

Definition at line 2345 of file qdeclarativecompiler.cpp.

Referenced by buildObject().

{
    QSet<QByteArray> propNames;
    QSet<QByteArray> methodNames;
    bool seenDefaultProperty = false;

    // Check properties
    for (int ii = 0; ii < obj->dynamicProperties.count(); ++ii) {
        const QDeclarativeParser::Object::DynamicProperty &prop =
            obj->dynamicProperties.at(ii);

        if (prop.isDefaultProperty) {
            if (seenDefaultProperty)
                COMPILE_EXCEPTION(&prop, tr("Duplicate default property"));
            seenDefaultProperty = true;
        }

        if (propNames.contains(prop.name))
            COMPILE_EXCEPTION(&prop, tr("Duplicate property name"));

        QString propName = QString::fromUtf8(prop.name);
        if (propName.at(0).isUpper())
            COMPILE_EXCEPTION(&prop, tr("Property names cannot begin with an upper case letter"));

        if (enginePrivate->globalClass->illegalNames().contains(propName))
            COMPILE_EXCEPTION(&prop, tr("Illegal property name"));

        propNames.insert(prop.name);
    }

    for (int ii = 0; ii < obj->dynamicSignals.count(); ++ii) {
        QByteArray name = obj->dynamicSignals.at(ii).name;
        if (methodNames.contains(name))
            COMPILE_EXCEPTION(obj, tr("Duplicate signal name"));
        QString nameStr = QString::fromUtf8(name);
        if (nameStr.at(0).isUpper())
            COMPILE_EXCEPTION(obj, tr("Signal names cannot begin with an upper case letter"));
        if (enginePrivate->globalClass->illegalNames().contains(nameStr))
            COMPILE_EXCEPTION(obj, tr("Illegal signal name"));
        methodNames.insert(name);
    }
    for (int ii = 0; ii < obj->dynamicSlots.count(); ++ii) {
        QByteArray name = obj->dynamicSlots.at(ii).name;
        if (methodNames.contains(name))
            COMPILE_EXCEPTION(obj, tr("Duplicate method name"));
        QString nameStr = QString::fromUtf8(name);
        if (nameStr.at(0).isUpper())
            COMPILE_EXCEPTION(obj, tr("Method names cannot begin with an upper case letter"));
        if (enginePrivate->globalClass->illegalNames().contains(nameStr))
            COMPILE_EXCEPTION(obj, tr("Illegal method name"));
        methodNames.insert(name);
    }

    return true;
}

checkValidId()

bool QDeclarativeCompiler::checkValidId ( QDeclarativeParser::Value *  v, const QString &  val  )

private

Definition at line 2668 of file qdeclarativecompiler.cpp.

Referenced by buildComponent(), and buildIdProperty().

{
    if (val.isEmpty()) 
        COMPILE_EXCEPTION(v, tr( "Invalid empty ID"));

    if (val.at(0).isLetter() && !val.at(0).isLower()) 
        COMPILE_EXCEPTION(v, tr( "IDs cannot start with an uppercase letter"));

    QChar u(QLatin1Char('_'));
    for (int ii = 0; ii < val.count(); ++ii) {

        if (ii == 0 && !val.at(ii).isLetter() && val.at(ii) != u) {
            COMPILE_EXCEPTION(v, tr( "IDs must start with a letter or underscore"));
        } else if (ii != 0 && !val.at(ii).isLetterOrNumber() && val.at(ii) != u)  {
            COMPILE_EXCEPTION(v, tr( "IDs must contain only letters, numbers, and underscores"));
        }

    }

    if (enginePrivate->globalClass->illegalNames().contains(val))
        COMPILE_EXCEPTION(v, tr( "ID illegally masks global JavaScript property"));

    return true;
}

compile()

bool QDeclarativeCompiler::compile	(	QDeclarativeEngine *	engine,
		QDeclarativeTypeData *	unit,
		QDeclarativeCompiledData *	out
	)

Compile unit, and store the output in out.

engine is the QDeclarativeEngine with which the QDeclarativeCompiledData will be associated.

Returns true on success, false on failure. On failure, the compile errors are available from errors().

If the environment variant QML_COMPILER_DUMP is set (eg. QML_COMPILER_DUMP=1) the compiled instructions will be dumped to stderr on a successful compiler.

Definition at line 573 of file qdeclarativecompiler.cpp.

Referenced by QDeclarativeTypeData::compile().

{
    exceptions.clear();

    Q_ASSERT(out);
    reset(out);

    output = out;

    // Compile types
    const QList<QDeclarativeTypeData::TypeReference>  &resolvedTypes = unit->resolvedTypes();
    QList<QDeclarativeScriptParser::TypeReference *> referencedTypes = unit->parser().referencedTypes();

    for (int ii = 0; ii < resolvedTypes.count(); ++ii) {
        QDeclarativeCompiledData::TypeReference ref;

        const QDeclarativeTypeData::TypeReference &tref = resolvedTypes.at(ii);
        QDeclarativeScriptParser::TypeReference *parserRef = referencedTypes.at(ii);

        if (tref.type) {
            ref.type = tref.type;
            if (!ref.type->isCreatable()) {
                QString err = ref.type->noCreationReason();
                if (err.isEmpty())
                    err = tr( "Element is not creatable.");
                COMPILE_EXCEPTION(parserRef->refObjects.first(), err);
            }
            
            if (ref.type->containsRevisionedAttributes()) {
                QDeclarativeError cacheError;
                ref.typePropertyCache = 
                    QDeclarativeEnginePrivate::get(engine)->cache(ref.type, resolvedTypes.at(ii).minorVersion, cacheError);

                if (!ref.typePropertyCache) {
                    COMPILE_EXCEPTION(parserRef->refObjects.first(), cacheError.description());
                }
                ref.typePropertyCache->addref();
            }

        } else if (tref.typeData) {
            ref.component = tref.typeData->compiledData();
        }
        ref.className = parserRef->name.toUtf8();
        out->types << ref;
    }

    QDeclarativeParser::Object *root = unit->parser().tree();
    Q_ASSERT(root);

    this->engine = engine;
    this->enginePrivate = QDeclarativeEnginePrivate::get(engine);
    this->unit = unit;
    this->unitRoot = root;
    compileTree(root);

    if (!isError()) {
        if (compilerDump())
            out->dumpInstructions();
        if (compilerStatDump())
            dumpStats();
        Q_ASSERT(out->rootPropertyCache);
    } else {
        reset(out);
    }

    compileState = ComponentCompileState();
    savedCompileStates.clear();
    output = 0;
    this->engine = 0;
    this->enginePrivate = 0;
    this->unit = 0;
    this->unitRoot = 0;

    return !isError();
}

compileAlias()

bool QDeclarativeCompiler::compileAlias ( QMetaObjectBuilder &  builder, QByteArray &  data, QDeclarativeParser::Object *  obj, const QDeclarativeParser::Object::DynamicProperty &  prop  )

private

Definition at line 2713 of file qdeclarativecompiler.cpp.

Referenced by buildDynamicMeta().

{
    if (!prop.defaultValue)
        COMPILE_EXCEPTION(obj, tr("No property alias location"));

    if (prop.defaultValue->values.count() != 1 ||
        prop.defaultValue->values.at(0)->object ||
        !prop.defaultValue->values.at(0)->value.isScript())
        COMPILE_EXCEPTION(prop.defaultValue, tr("Invalid alias location"));

    QDeclarativeJS::AST::Node *node = prop.defaultValue->values.at(0)->value.asAST();
    if (!node)
        COMPILE_EXCEPTION(obj, tr("No property alias location")); // ### Can this happen?

    QStringList alias = astNodeToStringList(node);

    if (alias.count() < 1 || alias.count() > 3)
        COMPILE_EXCEPTION(prop.defaultValue, tr("Invalid alias reference. An alias reference must be specified as <id>, <id>.<property> or <id>.<value property>.<property>"));

    if (!compileState.ids.contains(alias.at(0)))
        COMPILE_EXCEPTION(prop.defaultValue, tr("Invalid alias reference. Unable to find id \"%1\"").arg(alias.at(0)));

    QDeclarativeParser::Object *idObject = compileState.ids[alias.at(0)];

    QByteArray typeName;

    int propIdx = -1;
    int flags = 0;
    bool writable = false;
    if (alias.count() == 2 || alias.count() == 3) {
        propIdx = indexOfProperty(idObject, alias.at(1).toUtf8());

        if (-1 == propIdx) {
            COMPILE_EXCEPTION(prop.defaultValue, tr("Invalid alias location"));
        } else if (propIdx > 0xFFFF) {
            COMPILE_EXCEPTION(prop.defaultValue, tr("Alias property exceeds alias bounds"));
        }

        QMetaProperty aliasProperty = idObject->metaObject()->property(propIdx);
        if (!aliasProperty.isScriptable())
            COMPILE_EXCEPTION(prop.defaultValue, tr("Invalid alias location"));

        writable = aliasProperty.isWritable();

        if (alias.count() == 3) {
            QDeclarativeValueType *valueType = enginePrivate->valueTypes[aliasProperty.type()];
            if (!valueType)
                COMPILE_EXCEPTION(prop.defaultValue, tr("Invalid alias location"));

            propIdx |= ((unsigned int)aliasProperty.type()) << 24;

            int valueTypeIndex = valueType->metaObject()->indexOfProperty(alias.at(2).toUtf8().constData());
            if (valueTypeIndex == -1)
                COMPILE_EXCEPTION(prop.defaultValue, tr("Invalid alias location"));
            Q_ASSERT(valueTypeIndex <= 0xFF);
            
            aliasProperty = valueType->metaObject()->property(valueTypeIndex);
            propIdx |= (valueTypeIndex << 16);
        }

        if (aliasProperty.isEnumType()) 
            typeName = "int";  // Avoid introducing a dependency on the aliased metaobject
        else
            typeName = aliasProperty.typeName();
    } else {
        typeName = idObject->metaObject()->className();

        //use the base type since it has been registered with metatype system
        int index = typeName.indexOf("_QML_");
        if (index != -1) {
            typeName = typeName.left(index);
        } else {
            index = typeName.indexOf("_QMLTYPE_");
            const QMetaObject *mo = idObject->metaObject();
            while (index != -1 && mo) {
                typeName = mo->superClass()->className();
                index = typeName.indexOf("_QMLTYPE_");
                mo = mo->superClass();
            }
        }

        typeName += '*';
    }

    if (typeName.endsWith('*'))
        flags |= QML_ALIAS_FLAG_PTR;

    data.append((const char *)&idObject->idIndex, sizeof(idObject->idIndex));
    data.append((const char *)&propIdx, sizeof(propIdx));
    data.append((const char *)&flags, sizeof(flags));

    builder.addSignal(prop.name + "Changed()");
    QMetaPropertyBuilder propBuilder = 
        builder.addProperty(prop.name, typeName.constData(), builder.methodCount() - 1);
    propBuilder.setWritable(writable);
    return true;
}

compileTree()

void QDeclarativeCompiler::compileTree ( QDeclarativeParser::Object *  tree )

private

Definition at line 651 of file qdeclarativecompiler.cpp.

Referenced by compile().

{
    compileState.root = tree;
    componentStat.lineNumber = tree->location.start.line;

    if (!buildObject(tree, BindingContext()) || !completeComponentBuild())
        return;

    QDeclarativeInstruction init;
    init.type = QDeclarativeInstruction::Init;
    init.line = 0;
    init.init.bindingsSize = compileState.bindings.count();
    init.init.parserStatusSize = compileState.parserStatusCount;
    init.init.contextCache = genContextCache();
    if (compileState.compiledBindingData.isEmpty())
        init.init.compiledBinding = -1;
    else
        init.init.compiledBinding = output->indexForByteArray(compileState.compiledBindingData);
    output->bytecode << init;

    // Build global import scripts
    QHash<QString, Object::ScriptBlock> importedScripts;
    QStringList importedScriptIndexes;

    foreach (const QDeclarativeTypeData::ScriptReference &script, unit->resolvedScripts()) {
        QString scriptCode = script.script->scriptSource();
        Object::ScriptBlock::Pragmas pragmas = script.script->pragmas();

        Q_ASSERT(!importedScripts.contains(script.qualifier));

        if (!scriptCode.isEmpty()) {
            Object::ScriptBlock &scriptBlock = importedScripts[script.qualifier];

            scriptBlock.code = scriptCode;
            scriptBlock.file = script.script->finalUrl().toString();
            scriptBlock.pragmas = pragmas;
        }
    }

    for (QHash<QString, Object::ScriptBlock>::Iterator iter = importedScripts.begin(); 
         iter != importedScripts.end(); ++iter) {

        importedScriptIndexes.append(iter.key());

        QDeclarativeInstruction import;
        import.type = QDeclarativeInstruction::StoreImportedScript;
        import.line = 0;
        import.storeScript.value = output->scripts.count();
        output->scripts << *iter;
        output->bytecode << import;
    }

    genObject(tree);

    QDeclarativeInstruction def;
    init.line = 0;
    def.type = QDeclarativeInstruction::SetDefault;
    output->bytecode << def;

    output->importCache = new QDeclarativeTypeNameCache(engine);

    for (int ii = 0; ii < importedScriptIndexes.count(); ++ii) 
        output->importCache->add(importedScriptIndexes.at(ii), ii);

    unit->imports().populateCache(output->importCache, engine);

    Q_ASSERT(tree->metatype);

    if (tree->metadata.isEmpty()) {
        output->root = tree->metatype;
    } else {
        static_cast<QMetaObject &>(output->rootData) = *tree->metaObject();
        output->root = &output->rootData;
    }
    if (!tree->metadata.isEmpty()) 
        enginePrivate->registerCompositeType(output);
}

completeComponentBuild()

bool QDeclarativeCompiler::completeComponentBuild ( )

private

Definition at line 2916 of file qdeclarativecompiler.cpp.

Referenced by buildComponentFromRoot(), and compileTree().

{
    componentStat.ids = compileState.ids.count();

    for (int ii = 0; ii < compileState.aliasingObjects.count(); ++ii) {
        QDeclarativeParser::Object *aliasObject = compileState.aliasingObjects.at(ii);
        COMPILE_CHECK(buildDynamicMeta(aliasObject, ResolveAliases));
    }

    QDeclarativeBindingCompiler::Expression expr;
    expr.component = compileState.root;
    expr.ids = compileState.ids;

    QDeclarativeBindingCompiler bindingCompiler;

    for (QHash<QDeclarativeParser::Value*,BindingReference>::Iterator iter = compileState.bindings.begin(); 
         iter != compileState.bindings.end(); ++iter) {

        BindingReference &binding = *iter;

        expr.context = binding.bindingContext.object;
        expr.property = binding.property;
        expr.expression = binding.expression;
        expr.imports = unit->imports();

        // ### We don't currently optimize for bindings on alias's - because 
        // of the solution to QTBUG-13719
        if (!binding.property->isAlias) {
            int index = bindingCompiler.compile(expr, enginePrivate);
            if (index != -1) {
                binding.dataType = BindingReference::Experimental;
                binding.compiledIndex = index;
                componentStat.optimizedBindings.append(iter.key()->location);
                continue;
            } 
        }

        binding.dataType = BindingReference::QtScript;

        // Pre-rewrite the expression
        QString expression = binding.expression.asScript();

        QDeclarativeRewrite::RewriteBinding rewriteBinding;
        rewriteBinding.setName('$'+binding.property->name);
        bool isSharable = false;
        expression = rewriteBinding(binding.expression.asAST(), expression, &isSharable);

        quint32 length = expression.length();
        quint32 pc; 
        
        if (isSharable) {
            pc = output->cachedClosures.count();
            pc |= 0x80000000;
            output->cachedClosures.append(0);
        } else {
            pc = output->cachedPrograms.length();
            output->cachedPrograms.append(0);
        }

        binding.compiledData =
            QByteArray((const char *)&pc, sizeof(quint32)) +
            QByteArray((const char *)&length, sizeof(quint32)) +
            QByteArray((const char *)expression.constData(), 
                       expression.length() * sizeof(QChar));

        componentStat.scriptBindings.append(iter.key()->location);
    }

    if (bindingCompiler.isValid()) {
        compileState.compiledBindingData = bindingCompiler.program();
        if (bindingsDump()) 
            QDeclarativeBindingCompiler::dump(compileState.compiledBindingData);
    }

    saveComponentState();

    return true;
}

componentState()

QDeclarativeCompiler::ComponentCompileState QDeclarativeCompiler::componentState ( QDeclarativeParser::Object *  obj )

private

Definition at line 1812 of file qdeclarativecompiler.cpp.

Referenced by genComponent().

{
    Q_ASSERT(savedCompileStates.contains(obj));
    return savedCompileStates.value(obj);
}

componentTypeRef()

int QDeclarativeCompiler::componentTypeRef ( )

private

Definition at line 1339 of file qdeclarativecompiler.cpp.

Referenced by buildPropertyObjectAssignment().

{
    QDeclarativeType *t = QDeclarativeMetaType::qmlType("QtQuick/Component",1,0);
    for (int ii = output->types.count() - 1; ii >= 0; --ii) {
        if (output->types.at(ii).type == t)
            return ii;
    }
    QDeclarativeCompiledData::TypeReference ref;
    ref.className = "Component";
    ref.type = t;
    output->types << ref;
    return output->types.count() - 1;
}

deferredProperties()

QStringList QDeclarativeCompiler::deferredProperties ( QDeclarativeParser::Object *  obj )

private

Definition at line 3074 of file qdeclarativecompiler.cpp.

Referenced by buildObject().

{
    const QMetaObject *mo = obj->metatype;

    int idx = mo->indexOfClassInfo("DeferredPropertyNames");
    if (idx == -1)
        return QStringList();

    QMetaClassInfo classInfo = mo->classInfo(idx);
    QStringList rv = QString::fromUtf8(classInfo.value()).split(QLatin1Char(','));
    return rv;
}

doesPropertyExist()

bool QDeclarativeCompiler::doesPropertyExist ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj  )

private

Returns true if (value) property prop exists on obj, false otherwise.

Definition at line 1416 of file qdeclarativecompiler.cpp.

Referenced by buildObject().

{
    if(isAttachedPropertyName(prop->name) || prop->name == "id")
        return true;

    const QMetaObject *mo = obj->metaObject();
    if (mo) {
        if (prop->isDefault) {
            QMetaProperty p = QDeclarativeMetaType::defaultProperty(mo);
            return p.name() != 0;
        } else {
            int idx = indexOfProperty(obj, prop->name);
            return idx != -1 && mo->property(idx).isScriptable();
        }
    }

    return false;
}

dumpStats()

void QDeclarativeCompiler::dumpStats ( )

private

Definition at line 2995 of file qdeclarativecompiler.cpp.

Referenced by compile().

{
    qWarning().nospace() << "QML Document: " << output->url.toString();
    for (int ii = 0; ii < savedComponentStats.count(); ++ii) {
        const ComponentStat &stat = savedComponentStats.at(ii);
        qWarning().nospace() << "    Component Line " << stat.lineNumber;
        qWarning().nospace() << "        Total Objects:      " << stat.objects;
        qWarning().nospace() << "        IDs Used:           " << stat.ids;
        qWarning().nospace() << "        Optimized Bindings: " << stat.optimizedBindings.count();

        {
        QByteArray output;
        for (int ii = 0; ii < stat.optimizedBindings.count(); ++ii) {
            if (0 == (ii % 10)) {
                if (ii) output.append("\n");
                output.append("            ");
            }

            output.append("(");
            output.append(QByteArray::number(stat.optimizedBindings.at(ii).start.line));
            output.append(":");
            output.append(QByteArray::number(stat.optimizedBindings.at(ii).start.column));
            output.append(") ");
        }
        if (!output.isEmpty())
            qWarning().nospace() << output.constData();
        }

        qWarning().nospace() << "        QScript Bindings:   " << stat.scriptBindings.count();
        {
        QByteArray output;
        for (int ii = 0; ii < stat.scriptBindings.count(); ++ii) {
            if (0 == (ii % 10)) {
                if (ii) output.append("\n");
                output.append("            ");
            }

            output.append("(");
            output.append(QByteArray::number(stat.scriptBindings.at(ii).start.line));
            output.append(":");
            output.append(QByteArray::number(stat.scriptBindings.at(ii).start.column));
            output.append(") ");
        }
        if (!output.isEmpty())
            qWarning().nospace() << output.constData();
        }
    }
}

errors()

QList< QDeclarativeError > QDeclarativeCompiler::errors

(

)

const

Return the list of errors from the last call to compile(), or an empty list if there were no errors.

Definition at line 108 of file qdeclarativecompiler.cpp.

Referenced by QDeclarativeTypeData::compile().

{
    return exceptions;
}

evaluateEnum()

int QDeclarativeCompiler::evaluateEnum

(

const QByteArray &

script

)

const

Definition at line 2284 of file qdeclarativecompiler.cpp.

{
    int dot = script.indexOf('.');
    if (dot > 0) {
        QDeclarativeType *type = 0;
        unit->imports().resolveType(script.left(dot), &type, 0, 0, 0, 0);
        if (!type)
            return -1;
        const QMetaObject *mo = type->metaObject();
        const char *key = script.constData() + dot+1;
        int i = mo->enumeratorCount();
        while (i--) {
            int v = mo->enumerator(i).keyToValue(key);
            if (v >= 0)
                return v;
        }
    }
    return -1;
}

genBindingAssignment()

void QDeclarativeCompiler::genBindingAssignment ( QDeclarativeParser::Value *  binding, QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, QDeclarativeParser::Property *  valueTypeProperty = 0  )

private

Definition at line 2836 of file qdeclarativecompiler.cpp.

Referenced by genListProperty(), and genPropertyAssignment().

{
    Q_UNUSED(obj);
    Q_ASSERT(compileState.bindings.contains(binding));

    const BindingReference &ref = compileState.bindings.value(binding);
    if (ref.dataType == BindingReference::Experimental) {
        QDeclarativeInstruction store;
        store.type = QDeclarativeInstruction::StoreCompiledBinding;
        store.assignBinding.value = ref.compiledIndex;
        store.assignBinding.context = ref.bindingContext.stack;
        store.assignBinding.owner = ref.bindingContext.owner;
        if (valueTypeProperty) 
            store.assignBinding.property = (valueTypeProperty->index & 0xFFFF) |
                                           ((valueTypeProperty->type & 0xFF)) << 16 |
                                           ((prop->index & 0xFF) << 24);
        else 
            store.assignBinding.property = prop->index;
        store.line = binding->location.start.line;
        output->bytecode << store;
        return;
    }

    QDeclarativeInstruction store;
    if (!prop->isAlias)
        store.type = QDeclarativeInstruction::StoreBinding;
    else
        store.type = QDeclarativeInstruction::StoreBindingOnAlias;
    store.assignBinding.value = output->indexForByteArray(ref.compiledData);
    store.assignBinding.context = ref.bindingContext.stack;
    store.assignBinding.owner = ref.bindingContext.owner;
    store.line = binding->location.start.line;

    Q_ASSERT(ref.bindingContext.owner == 0 ||
             (ref.bindingContext.owner != 0 && valueTypeProperty));
    if (ref.bindingContext.owner) {
        store.assignBinding.property = genValueTypeData(prop, valueTypeProperty);
    } else {
        store.assignBinding.property = genPropertyData(prop);
    }

    output->bytecode << store;
}

genComponent()

void QDeclarativeCompiler::genComponent ( QDeclarativeParser::Object *  obj )

private

Definition at line 1184 of file qdeclarativecompiler.cpp.

Referenced by genObject().

{
    QDeclarativeParser::Object *root = obj->defaultProperty->values.at(0)->object;
    Q_ASSERT(root);

    QDeclarativeInstruction create;
    create.type = QDeclarativeInstruction::CreateComponent;
    create.line = root->location.start.line;
    create.createComponent.column = root->location.start.column;
    create.createComponent.endLine = root->location.end.line;
    output->bytecode << create;
    int count = output->bytecode.count();

    ComponentCompileState oldCompileState = compileState;
    compileState = componentState(root);

    QDeclarativeInstruction init;
    init.type = QDeclarativeInstruction::Init;
    init.init.bindingsSize = compileState.bindings.count();
    init.init.parserStatusSize = compileState.parserStatusCount;
    init.init.contextCache = genContextCache();
    if (compileState.compiledBindingData.isEmpty())
        init.init.compiledBinding = -1;
    else
        init.init.compiledBinding = output->indexForByteArray(compileState.compiledBindingData);
    init.line = obj->location.start.line;
    output->bytecode << init;

    genObject(root);

    QDeclarativeInstruction def;
    init.line = 0;
    def.type = QDeclarativeInstruction::SetDefault;
    output->bytecode << def;

    output->bytecode[count - 1].createComponent.count =
        output->bytecode.count() - count;

    compileState = oldCompileState;

    if (!obj->id.isEmpty()) {
        QDeclarativeInstruction id;
        id.type = QDeclarativeInstruction::SetId;
        id.line = 0;
        id.setId.value = output->indexForString(obj->id);
        id.setId.index = obj->idIndex;
        output->bytecode << id;
    }

    if (obj == unitRoot) {
        output->rootPropertyCache = output->types[obj->type].createPropertyCache(engine);
        output->rootPropertyCache->addref();
    }
}

genContextCache()

int QDeclarativeCompiler::genContextCache ( )

private

Definition at line 2883 of file qdeclarativecompiler.cpp.

Referenced by compileTree(), and genComponent().

{
    if (compileState.ids.count() == 0)
        return -1;

    QDeclarativeIntegerCache *cache = new QDeclarativeIntegerCache(engine);

    for (QHash<QString, QDeclarativeParser::Object *>::ConstIterator iter = compileState.ids.begin();
         iter != compileState.ids.end();
         ++iter) 
        cache->add(iter.key(), (*iter)->idIndex);

    output->contextCaches.append(cache);
    return output->contextCaches.count() - 1;
}

genListProperty()

void QDeclarativeCompiler::genListProperty ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj  )

private

Definition at line 1620 of file qdeclarativecompiler.cpp.

Referenced by genValueProperty().

{
    int listType = enginePrivate->listType(prop->type);

    QDeclarativeInstruction fetch;
    fetch.type = QDeclarativeInstruction::FetchQList;
    fetch.line = prop->location.start.line;
    fetch.fetchQmlList.property = prop->index;
    bool listTypeIsInterface = QDeclarativeMetaType::isInterface(listType);
    fetch.fetchQmlList.type = listType;
    output->bytecode << fetch;

    for (int ii = 0; ii < prop->values.count(); ++ii) {
        QDeclarativeParser::Value *v = prop->values.at(ii);

        if (v->type == Value::CreatedObject) {

            genObject(v->object);
            if (listTypeIsInterface) {
                QDeclarativeInstruction assign;
                assign.type = QDeclarativeInstruction::AssignObjectList;
                assign.line = prop->location.start.line;
                output->bytecode << assign;
            } else {
                QDeclarativeInstruction store;
                store.type = QDeclarativeInstruction::StoreObjectQList;
                store.line = prop->location.start.line;
                output->bytecode << store;
            }

        } else if (v->type == Value::PropertyBinding) {

            genBindingAssignment(v, prop, obj);

        }

    }

    QDeclarativeInstruction pop;
    pop.type = QDeclarativeInstruction::PopQList;
    pop.line = prop->location.start.line;
    output->bytecode << pop;
}

genLiteralAssignment()

void QDeclarativeCompiler::genLiteralAssignment ( const QMetaProperty &  prop, QDeclarativeParser::Value *  v  )

private

Generate a store instruction for assigning literal v to property prop.

Any literal assignment that is approved in testLiteralAssignment() must have a corresponding action in this method.

Definition at line 326 of file qdeclarativecompiler.cpp.

Referenced by genPropertyAssignment().

{
    QString string = v->value.asString();

    QDeclarativeInstruction instr;
    instr.line = v->location.start.line;
    if (prop.isEnumType()) {
        int value;
        if (v->value.isNumber()) { //Number saved from earlier check - not valid in testLiteralAssignment
            value = v->value.asNumber();
        } else {
            if (prop.isFlagType())
                value = prop.enumerator().keysToValue(string.toUtf8().constData());
            else
                value = prop.enumerator().keyToValue(string.toUtf8().constData());
        }

        instr.type = QDeclarativeInstruction::StoreInteger;
        instr.storeInteger.propertyIndex = prop.propertyIndex();
        instr.storeInteger.value = value;
        output->bytecode << instr;
        return;
    }

    int type = prop.userType();
    switch(type) {
        case -1:
            {
            if (v->value.isNumber()) {
                double n = v->value.asNumber();
                if (double(int(n)) == n) {
                    instr.type = QDeclarativeInstruction::StoreVariantInteger;
                    instr.storeInteger.propertyIndex = prop.propertyIndex();
                    instr.storeInteger.value = int(n);
                } else {
                    instr.type = QDeclarativeInstruction::StoreVariantDouble;
                    instr.storeDouble.propertyIndex = prop.propertyIndex();
                    instr.storeDouble.value = n;
                }
            } else if(v->value.isBoolean()) {
                instr.type = QDeclarativeInstruction::StoreVariantBool;
                instr.storeBool.propertyIndex = prop.propertyIndex();
                instr.storeBool.value = v->value.asBoolean();
            } else {
                instr.type = QDeclarativeInstruction::StoreVariant;
                instr.storeString.propertyIndex = prop.propertyIndex();
                instr.storeString.value = output->indexForString(string);
            }
            }
            break;
        case QVariant::String:
            {
            instr.type = QDeclarativeInstruction::StoreString;
            instr.storeString.propertyIndex = prop.propertyIndex();
            instr.storeString.value = output->indexForString(string);
            }
            break;
        case QVariant::Url:
            {
            instr.type = QDeclarativeInstruction::StoreUrl;
            QUrl u = string.isEmpty() ? QUrl() : output->url.resolved(QUrl(string));
            instr.storeUrl.propertyIndex = prop.propertyIndex();
            instr.storeUrl.value = output->indexForUrl(u);
            }
            break;
        case QVariant::UInt:
            {
            instr.type = QDeclarativeInstruction::StoreInteger;
            instr.storeInteger.propertyIndex = prop.propertyIndex();
            instr.storeInteger.value = uint(v->value.asNumber());
            }
            break;
        case QVariant::Int:
            {
            instr.type = QDeclarativeInstruction::StoreInteger;
            instr.storeInteger.propertyIndex = prop.propertyIndex();
            instr.storeInteger.value = int(v->value.asNumber());
            }
            break;
        case QMetaType::Float:
            {
            instr.type = QDeclarativeInstruction::StoreFloat;
            instr.storeFloat.propertyIndex = prop.propertyIndex();
            instr.storeFloat.value = float(v->value.asNumber());
            }
            break;
        case QVariant::Double:
            {
            instr.type = QDeclarativeInstruction::StoreDouble;
            instr.storeDouble.propertyIndex = prop.propertyIndex();
            instr.storeDouble.value = v->value.asNumber();
            }
            break;
        case QVariant::Color:
            {
            QColor c = QDeclarativeStringConverters::colorFromString(string);
            instr.type = QDeclarativeInstruction::StoreColor;
            instr.storeColor.propertyIndex = prop.propertyIndex();
            instr.storeColor.value = c.rgba();
            }
            break;
#ifndef QT_NO_DATESTRING
        case QVariant::Date:
            {
            QDate d = QDeclarativeStringConverters::dateFromString(string);
            instr.type = QDeclarativeInstruction::StoreDate;
            instr.storeDate.propertyIndex = prop.propertyIndex();
            instr.storeDate.value = d.toJulianDay();
            }
            break;
        case QVariant::Time:
            {
            QTime time = QDeclarativeStringConverters::timeFromString(string);
            int data[] = { time.hour(), time.minute(),
                           time.second(), time.msec() };
            int index = output->indexForInt(data, 4);
            instr.type = QDeclarativeInstruction::StoreTime;
            instr.storeTime.propertyIndex = prop.propertyIndex();
            instr.storeTime.valueIndex = index;
            }
            break;
        case QVariant::DateTime:
            {
            QDateTime dateTime = QDeclarativeStringConverters::dateTimeFromString(string);
            int data[] = { dateTime.date().toJulianDay(),
                           dateTime.time().hour(),
                           dateTime.time().minute(),
                           dateTime.time().second(),
                           dateTime.time().msec() };
            int index = output->indexForInt(data, 5);
            instr.type = QDeclarativeInstruction::StoreDateTime;
            instr.storeDateTime.propertyIndex = prop.propertyIndex();
            instr.storeDateTime.valueIndex = index;
            }
            break;
#endif // QT_NO_DATESTRING
        case QVariant::Point:
        case QVariant::PointF:
            {
            bool ok;
            QPointF point =
                QDeclarativeStringConverters::pointFFromString(string, &ok);
            float data[] = { float(point.x()), float(point.y()) };
            int index = output->indexForFloat(data, 2);
            if (type == QVariant::PointF)
                instr.type = QDeclarativeInstruction::StorePointF;
            else
                instr.type = QDeclarativeInstruction::StorePoint;
            instr.storeRealPair.propertyIndex = prop.propertyIndex();
            instr.storeRealPair.valueIndex = index;
            }
            break;
        case QVariant::Size:
        case QVariant::SizeF:
            {
            bool ok;
            QSizeF size = QDeclarativeStringConverters::sizeFFromString(string, &ok);
            float data[] = { float(size.width()), float(size.height()) };
            int index = output->indexForFloat(data, 2);
            if (type == QVariant::SizeF)
                instr.type = QDeclarativeInstruction::StoreSizeF;
            else
                instr.type = QDeclarativeInstruction::StoreSize;
            instr.storeRealPair.propertyIndex = prop.propertyIndex();
            instr.storeRealPair.valueIndex = index;
            }
            break;
        case QVariant::Rect:
        case QVariant::RectF:
            {
            bool ok;
            QRectF rect = QDeclarativeStringConverters::rectFFromString(string, &ok);
            float data[] = { float(rect.x()), float(rect.y()),
                             float(rect.width()), float(rect.height()) };
            int index = output->indexForFloat(data, 4);
            if (type == QVariant::RectF)
                instr.type = QDeclarativeInstruction::StoreRectF;
            else
                instr.type = QDeclarativeInstruction::StoreRect;
            instr.storeRect.propertyIndex = prop.propertyIndex();
            instr.storeRect.valueIndex = index;
            }
            break;
        case QVariant::Bool:
            {
            bool b = v->value.asBoolean();
            instr.type = QDeclarativeInstruction::StoreBool;
            instr.storeBool.propertyIndex = prop.propertyIndex();
            instr.storeBool.value = b;
            }
            break;
        case QVariant::Vector3D:
            {
            bool ok;
            QVector3D vector =
                QDeclarativeStringConverters::vector3DFromString(string, &ok);
            float data[] = { float(vector.x()), float(vector.y()), float(vector.z()) };
            int index = output->indexForFloat(data, 3);
            instr.type = QDeclarativeInstruction::StoreVector3D;
            instr.storeRealPair.propertyIndex = prop.propertyIndex();
            instr.storeRealPair.valueIndex = index;
            }
            break;
        default:
            {
            int t = prop.userType();
            int index = output->customTypeData.count();
            instr.type = QDeclarativeInstruction::AssignCustomType;
            instr.assignCustomType.propertyIndex = prop.propertyIndex();
            instr.assignCustomType.valueIndex = index;

            QDeclarativeCompiledData::CustomTypeData data;
            data.index = output->indexForString(string);
            data.type = t;
            output->customTypeData << data;
            }
            break;
    }
    output->bytecode << instr;
}

genObject()

void QDeclarativeCompiler::genObject ( QDeclarativeParser::Object *  obj )

private

Definition at line 910 of file qdeclarativecompiler.cpp.

Referenced by compileTree(), genComponent(), genListProperty(), genObjectBody(), and genPropertyAssignment().

{
    QDeclarativeCompiledData::TypeReference &tr = output->types[obj->type];
    if (tr.type && obj->metatype == &QDeclarativeComponent::staticMetaObject) {
        genComponent(obj);
        return;
    }

    // Create the object
    if (obj->custom.isEmpty() && output->types.at(obj->type).type &&
        !output->types.at(obj->type).type->isExtendedType() && obj != compileState.root) {

        QDeclarativeInstruction create;
        create.type = QDeclarativeInstruction::CreateSimpleObject;
        create.line = obj->location.start.line;
        create.createSimple.create = output->types.at(obj->type).type->createFunction();
        create.createSimple.typeSize = output->types.at(obj->type).type->createSize();
        create.createSimple.type = obj->type;
        create.createSimple.column = obj->location.start.column;
        output->bytecode << create;

    } else {

        QDeclarativeInstruction create;
        create.type = QDeclarativeInstruction::CreateObject;
        create.line = obj->location.start.line;
        create.create.column = obj->location.start.column;
        create.create.data = -1;
        if (!obj->custom.isEmpty())
            create.create.data = output->indexForByteArray(obj->custom);
        create.create.type = obj->type;
        if (!output->types.at(create.create.type).type && 
            !obj->bindingBitmask.isEmpty()) {
            Q_ASSERT(obj->bindingBitmask.size() % 4 == 0);
            create.create.bindingBits = 
                output->indexForByteArray(obj->bindingBitmask);
        } else {
            create.create.bindingBits = -1;
        }
        output->bytecode << create;

    }

    // Setup the synthesized meta object if necessary
    if (!obj->metadata.isEmpty()) {
        QDeclarativeInstruction meta;
        meta.type = QDeclarativeInstruction::StoreMetaObject;
        meta.line = 0;
        meta.storeMeta.data = output->indexForByteArray(obj->metadata);
        meta.storeMeta.aliasData = output->indexForByteArray(obj->synthdata);
        meta.storeMeta.propertyCache = output->propertyCaches.count();

        QDeclarativePropertyCache *propertyCache = obj->synthCache;
        Q_ASSERT(propertyCache);
        propertyCache->addref();

        // Add flag for alias properties
        if (!obj->synthdata.isEmpty()) {
            const QDeclarativeVMEMetaData *vmeMetaData = 
                reinterpret_cast<const QDeclarativeVMEMetaData *>(obj->synthdata.constData());
            for (int ii = 0; ii < vmeMetaData->aliasCount; ++ii) {
                int index = obj->metaObject()->propertyOffset() + vmeMetaData->propertyCount + ii;
                propertyCache->property(index)->flags |= QDeclarativePropertyCache::Data::IsAlias;
            }
        }

        if (obj == unitRoot) {
            propertyCache->addref();
            output->rootPropertyCache = propertyCache;
        }

        output->propertyCaches << propertyCache;
        output->bytecode << meta;
    } else if (obj == unitRoot) {
        output->rootPropertyCache = tr.createPropertyCache(engine);
        output->rootPropertyCache->addref();
    }

    // Set the object id
    if (!obj->id.isEmpty()) {
        QDeclarativeInstruction id;
        id.type = QDeclarativeInstruction::SetId;
        id.line = 0;
        id.setId.value = output->indexForString(obj->id);
        id.setId.index = obj->idIndex;
        output->bytecode << id;
    }

    // Begin the class
    if (tr.type && obj->parserStatusCast != -1) {
        QDeclarativeInstruction begin;
        begin.type = QDeclarativeInstruction::BeginObject;
        begin.begin.castValue = obj->parserStatusCast;
        begin.line = obj->location.start.line;
        output->bytecode << begin;
    }

    genObjectBody(obj);
}

genObjectBody()

void QDeclarativeCompiler::genObjectBody ( QDeclarativeParser::Object *  obj )

private

Definition at line 1010 of file qdeclarativecompiler.cpp.

Referenced by genObject().

{
    typedef QPair<Property *, int> PropPair;
    foreach(const PropPair &prop, obj->scriptStringProperties) {
        QDeclarativeInstruction ss;
        ss.type = QDeclarativeInstruction::StoreScriptString;
        ss.storeScriptString.propertyIndex = prop.first->index;
        ss.storeScriptString.value = 
            output->indexForString(prop.first->values.at(0)->value.asScript());
        ss.storeScriptString.scope = prop.second;
        output->bytecode << ss;
    }

    bool seenDefer = false;
    foreach(Property *prop, obj->valueProperties) {
        if (prop->isDeferred) {
            seenDefer = true;
            continue;
        }
        if (!prop->isAlias)
            genValueProperty(prop, obj);
    }
    if (seenDefer) {
        QDeclarativeInstruction defer;
        defer.type = QDeclarativeInstruction::Defer;
        defer.line = 0;
        defer.defer.deferCount = 0;
        int deferIdx = output->bytecode.count();
        output->bytecode << defer;

        QDeclarativeInstruction init;
        init.type = QDeclarativeInstruction::Init;
        init.init.bindingsSize = compileState.bindings.count(); // XXX - bigger than necessary
        init.init.parserStatusSize = compileState.parserStatusCount; // XXX - bigger than necessary
        init.init.contextCache = -1;
        init.init.compiledBinding = -1;
        output->bytecode << init;

        foreach(Property *prop, obj->valueProperties) {
            if (!prop->isDeferred)
                continue;
            genValueProperty(prop, obj);
        }

        output->bytecode[deferIdx].defer.deferCount =
            output->bytecode.count() - deferIdx - 1;
    }

    foreach(Property *prop, obj->signalProperties) {

        QDeclarativeParser::Value *v = prop->values.at(0);

        if (v->type == Value::SignalObject) {

            genObject(v->object);

            QDeclarativeInstruction assign;
            assign.type = QDeclarativeInstruction::AssignSignalObject;
            assign.line = v->location.start.line;
            assign.assignSignalObject.signal =
                output->indexForByteArray(prop->name);
            output->bytecode << assign;

        } else if (v->type == Value::SignalExpression) {

            BindingContext ctxt = compileState.signalExpressions.value(v);

            QDeclarativeInstruction store;
            store.type = QDeclarativeInstruction::StoreSignal;
            store.line = v->location.start.line;
            store.storeSignal.signalIndex = prop->index;
            store.storeSignal.value =
                output->indexForString(v->value.asScript().trimmed());
            store.storeSignal.context = ctxt.stack;
            store.storeSignal.name = output->indexForByteArray(prop->name);
            output->bytecode << store;

        }

    }

    foreach(Property *prop, obj->attachedProperties) {
        QDeclarativeInstruction fetch;
        fetch.type = QDeclarativeInstruction::FetchAttached;
        fetch.line = prop->location.start.line;
        fetch.fetchAttached.id = prop->index;
        output->bytecode << fetch;

        genObjectBody(prop->value);

        QDeclarativeInstruction pop;
        pop.type = QDeclarativeInstruction::PopFetchedObject;
        pop.line = prop->location.start.line;
        output->bytecode << pop;
    }

    foreach(Property *prop, obj->groupedProperties) {
        QDeclarativeInstruction fetch;
        fetch.type = QDeclarativeInstruction::FetchObject;
        fetch.fetch.property = prop->index;
        fetch.line = prop->location.start.line;
        output->bytecode << fetch;

        if (!prop->value->metadata.isEmpty()) {
            QDeclarativeInstruction meta;
            meta.type = QDeclarativeInstruction::StoreMetaObject;
            meta.line = 0;
            meta.storeMeta.data = output->indexForByteArray(prop->value->metadata);
            meta.storeMeta.aliasData = output->indexForByteArray(prop->value->synthdata);
            meta.storeMeta.propertyCache = -1;
            output->bytecode << meta;
        }

        genObjectBody(prop->value);

        QDeclarativeInstruction pop;
        pop.type = QDeclarativeInstruction::PopFetchedObject;
        pop.line = prop->location.start.line;
        output->bytecode << pop;
    }

    foreach(Property *prop, obj->valueTypeProperties) {
        if (!prop->isAlias)
            genValueTypeProperty(obj, prop);
    }

    foreach(Property *prop, obj->valueProperties) {
        if (prop->isDeferred) 
            continue;
        if (prop->isAlias)
            genValueProperty(prop, obj);
    }

    foreach(Property *prop, obj->valueTypeProperties) {
        if (prop->isAlias)
            genValueTypeProperty(obj, prop);
    }
}

genPropertyAssignment()

void QDeclarativeCompiler::genPropertyAssignment ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj, QDeclarativeParser::Property *  valueTypeProperty = 0  )

private

Definition at line 1665 of file qdeclarativecompiler.cpp.

Referenced by genValueProperty(), and genValueTypeProperty().

{
    for (int ii = 0; ii < prop->values.count(); ++ii) {
        QDeclarativeParser::Value *v = prop->values.at(ii);

        Q_ASSERT(v->type == Value::CreatedObject ||
                 v->type == Value::PropertyBinding ||
                 v->type == Value::Literal);

        if (v->type == Value::CreatedObject) {

            genObject(v->object);

            if (QDeclarativeMetaType::isInterface(prop->type)) {

                QDeclarativeInstruction store;
                store.type = QDeclarativeInstruction::StoreInterface;
                store.line = v->object->location.start.line;
                store.storeObject.propertyIndex = prop->index;
                output->bytecode << store;

            } else if (prop->type == -1) {

                QDeclarativeInstruction store;
                store.type = QDeclarativeInstruction::StoreVariantObject;
                store.line = v->object->location.start.line;
                store.storeObject.propertyIndex = prop->index;
                output->bytecode << store;

            } else {

                QDeclarativeInstruction store;
                store.type = QDeclarativeInstruction::StoreObject;
                store.line = v->object->location.start.line;
                store.storeObject.propertyIndex = prop->index;
                output->bytecode << store;

            }
        } else if (v->type == Value::PropertyBinding) {

            genBindingAssignment(v, prop, obj, valueTypeProperty);

        } else if (v->type == Value::Literal) {

            QMetaProperty mp = obj->metaObject()->property(prop->index);
            genLiteralAssignment(mp, v);

        }

    }

    for (int ii = 0; ii < prop->onValues.count(); ++ii) {

        QDeclarativeParser::Value *v = prop->onValues.at(ii);

        Q_ASSERT(v->type == Value::ValueSource ||
                 v->type == Value::ValueInterceptor);

        if (v->type == Value::ValueSource) {
            genObject(v->object);

            QDeclarativeInstruction store;
            store.type = QDeclarativeInstruction::StoreValueSource;
            store.line = v->object->location.start.line;
            if (valueTypeProperty) {
                store.assignValueSource.property = genValueTypeData(prop, valueTypeProperty);
                store.assignValueSource.owner = 1;
            } else {
                store.assignValueSource.property = genPropertyData(prop);
                store.assignValueSource.owner = 0;
            }
            QDeclarativeType *valueType = toQmlType(v->object);
            store.assignValueSource.castValue = valueType->propertyValueSourceCast();
            output->bytecode << store;

        } else if (v->type == Value::ValueInterceptor) {
            genObject(v->object);

            QDeclarativeInstruction store;
            store.type = QDeclarativeInstruction::StoreValueInterceptor;
            store.line = v->object->location.start.line;
            if (valueTypeProperty) {
                store.assignValueInterceptor.property = genValueTypeData(prop, valueTypeProperty);
                store.assignValueInterceptor.owner = 1;
            } else {
                store.assignValueInterceptor.property = genPropertyData(prop);
                store.assignValueInterceptor.owner = 0;
            }
            QDeclarativeType *valueType = toQmlType(v->object);
            store.assignValueInterceptor.castValue = valueType->propertyValueInterceptorCast();
            output->bytecode << store;
        }

    }
}

genPropertyData()

int QDeclarativeCompiler::genPropertyData ( QDeclarativeParser::Property *  prop )

private

Definition at line 2911 of file qdeclarativecompiler.cpp.

Referenced by genBindingAssignment(), and genPropertyAssignment().

{
    return output->indexForByteArray(QDeclarativePropertyPrivate::saveProperty(prop->parent->metaObject(), prop->index));
}

genValueProperty()

void QDeclarativeCompiler::genValueProperty ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Object *  obj  )

private

Definition at line 1610 of file qdeclarativecompiler.cpp.

Referenced by genObjectBody().

{
    if (enginePrivate->isList(prop->type)) {
        genListProperty(prop, obj);
    } else {
        genPropertyAssignment(prop, obj);
    }
}

genValueTypeData()

int QDeclarativeCompiler::genValueTypeData ( QDeclarativeParser::Property *  prop, QDeclarativeParser::Property *  valueTypeProp  )

private

Definition at line 2899 of file qdeclarativecompiler.cpp.

Referenced by genBindingAssignment(), and genPropertyAssignment().

{
    QByteArray data =
        QDeclarativePropertyPrivate::saveValueType(prop->parent->metaObject(), prop->index, 
                                                   enginePrivate->valueTypes[prop->type]->metaObject(), 
                                                   valueTypeProp->index);
//                valueTypeProp->index, valueTypeProp->type);

    return output->indexForByteArray(data);
}

genValueTypeProperty()

void QDeclarativeCompiler::genValueTypeProperty ( QDeclarativeParser::Object *  obj, QDeclarativeParser::Property *  prop  )

private

Definition at line 1149 of file qdeclarativecompiler.cpp.

Referenced by genObjectBody().

{
    QDeclarativeInstruction fetch;
    fetch.type = QDeclarativeInstruction::FetchValueType;
    fetch.fetchValue.property = prop->index;
    fetch.fetchValue.type = prop->type;
    fetch.fetchValue.bindingSkipList = 0;
    fetch.line = prop->location.start.line;

    if (obj->type == -1 || output->types.at(obj->type).component) {
        // We only have to do this if this is a composite type.  If it is a builtin
        // type it can't possibly already have bindings that need to be cleared.
        foreach(Property *vprop, prop->value->valueProperties) {
            if (!vprop->values.isEmpty()) {
                Q_ASSERT(vprop->index >= 0 && vprop->index < 32);
                fetch.fetchValue.bindingSkipList |= (1 << vprop->index);
            }
        }
    }

    output->bytecode << fetch;

    foreach(Property *vprop, prop->value->valueProperties) {
        genPropertyAssignment(vprop, prop->value, prop);
    }

    QDeclarativeInstruction pop;
    pop.type = QDeclarativeInstruction::PopValueType;
    pop.fetchValue.property = prop->index;
    pop.fetchValue.type = prop->type;
    pop.fetchValue.bindingSkipList = 0;
    pop.line = prop->location.start.line;
    output->bytecode << pop;
}

indexOfProperty()

int QDeclarativeCompiler::indexOfProperty ( QDeclarativeParser::Object *  object, const QByteArray &  name, bool *  notInRevision = 0  )

private

Definition at line 3129 of file qdeclarativecompiler.cpp.

Referenced by buildProperty(), buildSignal(), compileAlias(), doesPropertyExist(), and indexOfSignal().

{
    if (notInRevision) *notInRevision = false;

    if (object->synthCache || (object->type != -1 && output->types.at(object->type).propertyCache())) {
        // XXX fromUtf8
        QString strName(QString::fromUtf8(name));
        QDeclarativePropertyCache *cache = 
            object->synthCache?object->synthCache:output->types.at(object->type).propertyCache();

        QDeclarativePropertyCache::Data *d = cache->property(strName);
        // Find the first property
        while (d && d->flags & QDeclarativePropertyCache::Data::IsFunction) 
            d = cache->overrideData(d);

        if (d && !cache->isAllowedInRevision(d)) {
            if (notInRevision) *notInRevision = true;
            return -1;
        } else {
            return d?d->coreIndex:-1;
        }
    } else {
        const QMetaObject *mo = object->metaObject();
        return mo->indexOfProperty(name.constData());
    }
}

indexOfSignal()

int QDeclarativeCompiler::indexOfSignal ( QDeclarativeParser::Object *  object, const QByteArray &  name, bool *  notInRevision = 0  )

private

Definition at line 3088 of file qdeclarativecompiler.cpp.

Referenced by buildSignal().

{
    if (notInRevision) *notInRevision = false;

    if (object->synthCache || (object->type != -1 && output->types.at(object->type).propertyCache())) {
        // XXX fromUtf8
        QString strName(QString::fromUtf8(name));
        QDeclarativePropertyCache *cache = 
            object->synthCache?object->synthCache:output->types.at(object->type).propertyCache();

        QDeclarativePropertyCache::Data *d = cache->property(strName);
        if (notInRevision) *notInRevision = false;

        while (d && !(d->flags & QDeclarativePropertyCache::Data::IsFunction))
            d = cache->overrideData(d);

        if (d && !cache->isAllowedInRevision(d)) {
            if (notInRevision) *notInRevision = true;
            return -1;
        } else if (d) {
            return d->coreIndex;
        }

        if (name.endsWith("Changed")) {
            QByteArray propName = name.mid(0, name.length() - 7);

            int propIndex = indexOfProperty(object, propName, notInRevision);
            if (propIndex != -1) {
                d = cache->property(propIndex);
                return d->notifyIndex;
            }
        }

        return -1;
    } else {
        return QDeclarativePropertyPrivate::findSignalByName(object->metaObject(), name).methodIndex();
    }

}

isAttachedPropertyName()

bool QDeclarativeCompiler::isAttachedPropertyName ( const QByteArray &  name )

static

Returns true if name refers to an attached property, false otherwise.

Attached property names are those that start with a capital letter.

Definition at line 118 of file qdeclarativecompiler.cpp.

Referenced by buildObject(), buildProperty(), buildPropertyInNamespace(), and doesPropertyExist().

{
    return !name.isEmpty() && name.at(0) >= 'A' && name.at(0) <= 'Z';
}

isError()

bool QDeclarativeCompiler::isError

(

)

const

Returns true if the last call to compile() caused errors.

See also

errors()

Definition at line 99 of file qdeclarativecompiler.cpp.

Referenced by compile().

{
    return !exceptions.isEmpty();
}

isSignalPropertyName()

bool QDeclarativeCompiler::isSignalPropertyName ( const QByteArray &  name )

static

Returns true if name refers to a signal property, false otherwise.

Signal property names are those that start with "on", followed by a capital letter.

Definition at line 129 of file qdeclarativecompiler.cpp.

Referenced by buildObject(), and buildSubObject().

{
    return name.length() >= 3 && name.startsWith("on") &&
           'A' <= name.at(2) && 'Z' >= name.at(2);
}

mergeDynamicMetaProperties()

bool QDeclarativeCompiler::mergeDynamicMetaProperties ( QDeclarativeParser::Object *  obj )

private

Definition at line 2401 of file qdeclarativecompiler.cpp.

Referenced by buildObject().

{
    for (int ii = 0; ii < obj->dynamicProperties.count(); ++ii) {
        const Object::DynamicProperty &p = obj->dynamicProperties.at(ii);

        if (!p.defaultValue || p.type == Object::DynamicProperty::Alias)
            continue;

        Property *property = 0;
        if (p.isDefaultProperty) {
            property = obj->getDefaultProperty();
        } else {
            property = obj->getProperty(p.name);
            if (!property->values.isEmpty()) 
                COMPILE_EXCEPTION(property, tr("Property value set multiple times"));
        }

        if (property->value)
            COMPILE_EXCEPTION(property, tr("Invalid property nesting"));

        for (int ii = 0; ii < p.defaultValue->values.count(); ++ii) {
            QDeclarativeParser::Value *v = p.defaultValue->values.at(ii);
            v->addref();
            property->values.append(v);
        }
    }
    return true;
}

reset()

void QDeclarativeCompiler::reset ( QDeclarativeCompiledData *  data )

staticprivate

Resets data by clearing the lists that the QDeclarativeCompiler modifies.

Definition at line 551 of file qdeclarativecompiler.cpp.

Referenced by compile().

{
    data->types.clear();
    data->primitives.clear();
    data->floatData.clear();
    data->intData.clear();
    data->customTypeData.clear();
    data->datas.clear();
    data->bytecode.clear();
}

resolveType()

const QMetaObject * QDeclarativeCompiler::resolveType

(

const QByteArray &

name

)

const

Definition at line 2304 of file qdeclarativecompiler.cpp.

{
    QDeclarativeType *qmltype = 0;
    if (!unit->imports().resolveType(name, &qmltype, 0, 0, 0, 0)) 
        return 0;
    if (!qmltype)
        return 0;
    return qmltype->metaObject();
}

rewriteBinding()

int QDeclarativeCompiler::rewriteBinding	(	const QString &	expression,
		const QByteArray &	name
	)

Definition at line 2316 of file qdeclarativecompiler.cpp.

Referenced by completeComponentBuild().

{
    QDeclarativeRewrite::RewriteBinding rewriteBinding;
    rewriteBinding.setName('$' + name.mid(name.lastIndexOf('.') + 1));
    bool isSharable = false;
    QString rewrite = rewriteBinding(expression, 0, &isSharable);

    quint32 length = rewrite.length();
    quint32 pc;

    if (isSharable) {
        pc = output->cachedClosures.count();
        pc |= 0x80000000;
        output->cachedClosures.append(0);
    } else {
        pc = output->cachedPrograms.length();
        output->cachedPrograms.append(0);
    }

    QByteArray compiledData =
        QByteArray((const char *)&pc, sizeof(quint32)) +
        QByteArray((const char *)&length, sizeof(quint32)) +
        QByteArray((const char *)rewrite.constData(),
                   rewrite.length() * sizeof(QChar));

    return output->indexForByteArray(compiledData);
}

saveComponentState()

void QDeclarativeCompiler::saveComponentState ( )

private

Definition at line 1802 of file qdeclarativecompiler.cpp.

Referenced by completeComponentBuild().

{
    Q_ASSERT(compileState.root);
    Q_ASSERT(!savedCompileStates.contains(compileState.root));

    savedCompileStates.insert(compileState.root, compileState);
    savedComponentStats.append(componentStat);
}

testLiteralAssignment()

bool QDeclarativeCompiler::testLiteralAssignment ( const QMetaProperty &  prop, QDeclarativeParser::Value *  v  )

private

Returns true if literal v can be assigned to property prop, otherwise false.

This test corresponds to action taken by genLiteralAssignment(). Any change made here, must have a corresponding action in genLiteralAssigment().

Definition at line 185 of file qdeclarativecompiler.cpp.

Referenced by buildPropertyLiteralAssignment(), and buildValueTypeProperty().

{
    QString string = v->value.asString();

    if (!prop.isWritable())
        COMPILE_EXCEPTION(v, tr("Invalid property assignment: \"%1\" is a read-only property").arg(QString::fromUtf8(prop.name())));

    if (prop.isEnumType()) {
        int value;
        if (prop.isFlagType()) {
            value = prop.enumerator().keysToValue(string.toUtf8().constData());
        } else
            value = prop.enumerator().keyToValue(string.toUtf8().constData());
        if (value == -1)
            COMPILE_EXCEPTION(v, tr("Invalid property assignment: unknown enumeration"));
        return true;
    }
    int type = prop.userType();
    switch(type) {
        case -1:
            break;
        case QVariant::String:
            if (!v->value.isString()) COMPILE_EXCEPTION(v, tr("Invalid property assignment: string expected"));
            break;
        case QVariant::Url:
            if (!v->value.isString()) COMPILE_EXCEPTION(v, tr("Invalid property assignment: url expected"));
            break;
        case QVariant::UInt:
            {
            bool ok = v->value.isNumber();
            if (ok) {
                double n = v->value.asNumber();
                if (double(uint(n)) != n)
                    ok = false;
            }
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: unsigned int expected"));
            }
            break;
        case QVariant::Int:
            {
            bool ok = v->value.isNumber();
            if (ok) {
                double n = v->value.asNumber();
                if (double(int(n)) != n)
                    ok = false;
            }
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: int expected"));
            }
            break;
        case QMetaType::Float:
            if (!v->value.isNumber()) COMPILE_EXCEPTION(v, tr("Invalid property assignment: number expected"));
            break;
        case QVariant::Double:
            if (!v->value.isNumber()) COMPILE_EXCEPTION(v, tr("Invalid property assignment: number expected"));
            break;
        case QVariant::Color:
            {
            bool ok;
            QDeclarativeStringConverters::colorFromString(string, &ok);
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: color expected"));
            }
            break;
#ifndef QT_NO_DATESTRING
        case QVariant::Date:
            {
            bool ok;
            QDeclarativeStringConverters::dateFromString(string, &ok);
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: date expected"));
            }
            break;
        case QVariant::Time:
            {
            bool ok;
            QDeclarativeStringConverters::timeFromString(string, &ok);
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: time expected"));
            }
            break;
        case QVariant::DateTime:
            {
            bool ok;
            QDeclarativeStringConverters::dateTimeFromString(string, &ok);
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: datetime expected"));
            }
            break;
#endif // QT_NO_DATESTRING
        case QVariant::Point:
        case QVariant::PointF:
            {
            bool ok;
            QDeclarativeStringConverters::pointFFromString(string, &ok);
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: point expected"));
            }
            break;
        case QVariant::Size:
        case QVariant::SizeF:
            {
            bool ok;
            QDeclarativeStringConverters::sizeFFromString(string, &ok);
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: size expected"));
            }
            break;
        case QVariant::Rect:
        case QVariant::RectF:
            {
            bool ok;
            QDeclarativeStringConverters::rectFFromString(string, &ok);
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: rect expected"));
            }
            break;
        case QVariant::Bool:
            {
            if (!v->value.isBoolean()) COMPILE_EXCEPTION(v, tr("Invalid property assignment: boolean expected"));
            }
            break;
        case QVariant::Vector3D:
            {
            bool ok;
            QDeclarativeStringConverters::vector3DFromString(string, &ok);
            if (!ok) COMPILE_EXCEPTION(v, tr("Invalid property assignment: 3D vector expected"));
            }
            break;
        default:
            {
            int t = prop.userType();
            QDeclarativeMetaType::StringConverter converter =
                QDeclarativeMetaType::customStringConverter(t);
            if (!converter)
                COMPILE_EXCEPTION(v, tr("Invalid property assignment: unsupported type \"%1\"").arg(QString::fromLatin1(QVariant::typeToName(prop.type()))));
            }
            break;
    }
    return true;
}

testQualifiedEnumAssignment()

bool QDeclarativeCompiler::testQualifiedEnumAssignment ( const QMetaProperty &  prop, QDeclarativeParser::Object *  obj, QDeclarativeParser::Value *  value, bool *  isAssignment  )

private

Definition at line 2220 of file qdeclarativecompiler.cpp.

Referenced by buildPropertyLiteralAssignment(), and buildValueTypeProperty().

{
    *isAssignment = false;
    if (!prop.isEnumType())
        return true;

    if (!prop.isWritable())
        COMPILE_EXCEPTION(v, tr("Invalid property assignment: \"%1\" is a read-only property").arg(QString::fromUtf8(prop.name())));

    QString string = v->value.asString();
    if (!string.at(0).isUpper())
        return true;

    QStringList parts = string.split(QLatin1Char('.'));
    if (parts.count() != 2)
        return true;

    QString typeName = parts.at(0);
    QDeclarativeType *type = 0;
    unit->imports().resolveType(typeName.toUtf8(), &type, 0, 0, 0, 0);

    //handle enums on value types (where obj->typeName is empty)
    QByteArray objTypeName = obj->typeName;
    if (objTypeName.isEmpty()) {
        QDeclarativeType *objType = toQmlType(obj);
        if (objType)
            objTypeName = objType->qmlTypeName();
    }

    if (!type && typeName != QLatin1String("Qt"))
        return true;

    QString enumValue = parts.at(1);
    int value = -1;

    if (type && objTypeName == type->qmlTypeName()) {
        if (prop.isFlagType()) {
            value = prop.enumerator().keysToValue(enumValue.toUtf8().constData());
        } else {
            value = prop.enumerator().keyToValue(enumValue.toUtf8().constData());
        }
    } else {
        QByteArray enumName = enumValue.toUtf8();
        //Special case for Qt object
        const QMetaObject *metaObject = type ? type->metaObject() : StaticQtMetaObject::get();
        for (int ii = metaObject->enumeratorCount() - 1; value == -1 && ii >= 0; --ii) {
            QMetaEnum e = metaObject->enumerator(ii);
            value = e.keyToValue(enumName.constData());
        }
    }
    if (value == -1)
        return true;

    v->type = Value::Literal;
    v->value = QDeclarativeParser::Variant((double)value);
    *isAssignment = true;

    return true;
}

toQmlType()

QDeclarativeType * QDeclarativeCompiler::toQmlType ( QDeclarativeParser::Object *  from )

staticprivate

Definition at line 3062 of file qdeclarativecompiler.cpp.

Referenced by buildObject(), buildPropertyOnAssignment(), genPropertyAssignment(), and testQualifiedEnumAssignment().

{
    // ### Optimize
    const QMetaObject *mo = from->metatype;
    QDeclarativeType *type = 0;
    while (!type && mo) {
        type = QDeclarativeMetaType::qmlType(mo);
        mo = mo->superClass();
    }
   return type;
}

Properties

compileState

ComponentCompileState QDeclarativeCompiler::compileState

private

Definition at line 321 of file qdeclarativecompiler_p.h.

Referenced by addBindingReference(), addId(), buildComponent(), buildComponentFromRoot(), buildDynamicMeta(), buildIdProperty(), buildObject(), buildSignal(), compile(), compileAlias(), compileTree(), completeComponentBuild(), genBindingAssignment(), genComponent(), genContextCache(), genObject(), genObjectBody(), and saveComponentState().

componentStat

ComponentStat QDeclarativeCompiler::componentStat

private

Definition at line 334 of file qdeclarativecompiler_p.h.

Referenced by buildComponentFromRoot(), buildObject(), compileTree(), completeComponentBuild(), and saveComponentState().

engine

QDeclarativeEngine* QDeclarativeCompiler::engine

private

Definition at line 344 of file qdeclarativecompiler_p.h.

Referenced by buildDynamicMeta(), compile(), compileTree(), genComponent(), genContextCache(), and genObject().

enginePrivate

QDeclarativeEnginePrivate* QDeclarativeCompiler::enginePrivate

private

Definition at line 345 of file qdeclarativecompiler_p.h.

Referenced by buildDynamicMeta(), buildGroupedProperty(), buildListProperty(), buildProperty(), buildPropertyObjectAssignment(), canCoerce(), checkDynamicMeta(), checkValidId(), compile(), compileAlias(), compileTree(), completeComponentBuild(), genListProperty(), genValueProperty(), and genValueTypeData().

exceptions

QList<QDeclarativeError> QDeclarativeCompiler::exceptions

private

Definition at line 342 of file qdeclarativecompiler_p.h.

Referenced by buildObject(), compile(), errors(), and isError().

output

QDeclarativeCompiledData* QDeclarativeCompiler::output

private

Definition at line 343 of file qdeclarativecompiler_p.h.

Referenced by buildDynamicMeta(), buildObject(), buildProperty(), buildPropertyObjectAssignment(), buildPropertyOnAssignment(), compile(), compileTree(), completeComponentBuild(), componentTypeRef(), dumpStats(), genBindingAssignment(), genComponent(), genContextCache(), genListProperty(), genLiteralAssignment(), genObject(), genObjectBody(), genPropertyAssignment(), genPropertyData(), genValueTypeData(), genValueTypeProperty(), indexOfProperty(), indexOfSignal(), and rewriteBinding().

savedCompileStates

QHash<QDeclarativeParser::Object *, ComponentCompileState> QDeclarativeCompiler::savedCompileStates

private

Definition at line 339 of file qdeclarativecompiler_p.h.

Referenced by compile(), componentState(), and saveComponentState().

savedComponentStats

QList<ComponentStat> QDeclarativeCompiler::savedComponentStats

private

Definition at line 340 of file qdeclarativecompiler_p.h.

Referenced by dumpStats(), and saveComponentState().

unit

QDeclarativeTypeData* QDeclarativeCompiler::unit

private

Definition at line 347 of file qdeclarativecompiler_p.h.

Referenced by buildDynamicMeta(), buildProperty(), buildPropertyInNamespace(), buildSignal(), compile(), compileTree(), completeComponentBuild(), evaluateEnum(), resolveType(), and testQualifiedEnumAssignment().

unitRoot

QDeclarativeParser::Object* QDeclarativeCompiler::unitRoot

private

Definition at line 346 of file qdeclarativecompiler_p.h.

Referenced by compile(), genComponent(), and genObject().

---

The documentation for this class was generated from the following files:

• /src/declarative/qml/qdeclarativecompiler_p.h
• /src/declarative/qml/qdeclarativecompiler.cpp