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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qqmltypecompiler_p.h"
#include <private/qqmlcompiler_p.h>
#include <private/qqmlobjectcreator_p.h>
QT_BEGIN_NAMESPACE
QQmlTypeCompiler::QQmlTypeCompiler(QQmlEnginePrivate *engine, QQmlCompiledData *compiledData, QQmlTypeData *typeData, QtQml::ParsedQML *parsedQML)
: engine(engine)
, compiledData(compiledData)
, typeData(typeData)
, parsedQML(parsedQML)
{
}
bool QQmlTypeCompiler::compile()
{
compiledData->importCache = new QQmlTypeNameCache;
foreach (const QString &ns, typeData->namespaces())
compiledData->importCache->add(ns);
// Add any Composite Singletons that were used to the import cache
foreach (const QQmlTypeData::TypeReference &singleton, typeData->compositeSingletons())
compiledData->importCache->add(singleton.type->qmlTypeName(), singleton.type->sourceUrl(), singleton.prefix);
typeData->imports().populateCache(compiledData->importCache);
compiledData->importCache->addref();
const QHash<int, QQmlTypeData::TypeReference> &resolvedTypes = typeData->resolvedTypeRefs();
for (QHash<int, QQmlTypeData::TypeReference>::ConstIterator resolvedType = resolvedTypes.constBegin(), end = resolvedTypes.constEnd();
resolvedType != end; ++resolvedType) {
QQmlCompiledData::TypeReference ref;
if (resolvedType->typeData) {
ref.component = resolvedType->typeData->compiledData();
ref.component->addref();
} else {
ref.type = resolvedType->type;
Q_ASSERT(ref.type);
}
ref.majorVersion = resolvedType->majorVersion;
ref.minorVersion = resolvedType->minorVersion;
compiledData->resolvedTypes.insert(resolvedType.key(), ref);
}
// Build property caches and VME meta object data
const int objectCount = parsedQML->objects.count();
compiledData->datas.reserve(objectCount);
compiledData->propertyCaches.reserve(objectCount);
QQmlPropertyCacheCreator propertyCacheBuilder(engine,
parsedQML->jsGenerator.strings, compiledData->url,
&typeData->imports(), &compiledData->resolvedTypes);
for (int i = 0; i < objectCount; ++i) {
const QtQml::QmlObject *obj = parsedQML->objects.at(i);
QByteArray vmeMetaObjectData;
QQmlPropertyCache *propertyCache = 0;
// If the object has no type, then it's probably a nested object definition as part
// of a group property.
const bool objectHasType = !propertyCacheBuilder.stringAt(obj->inheritedTypeNameIndex).isEmpty();
if (objectHasType) {
if (!propertyCacheBuilder.create(obj, &propertyCache, &vmeMetaObjectData)) {
errors << propertyCacheBuilder.errors;
return false;
}
}
compiledData->datas << vmeMetaObjectData;
if (propertyCache)
propertyCache->addref();
compiledData->propertyCaches << propertyCache;
if (i == parsedQML->indexOfRootObject) {
Q_ASSERT(propertyCache);
compiledData->rootPropertyCache = propertyCache;
propertyCache->addref();
}
}
{
SignalHandlerConverter converter(engine, parsedQML, compiledData);
if (!converter.convertSignalHandlerExpressionsToFunctionDeclarations()) {
errors << converter.errors;
return false;
}
}
// Collect imported scripts
const QList<QQmlTypeData::ScriptReference> &scripts = typeData->resolvedScripts();
compiledData->scripts.reserve(scripts.count());
for (int scriptIndex = 0; scriptIndex < scripts.count(); ++scriptIndex) {
const QQmlTypeData::ScriptReference &script = scripts.at(scriptIndex);
QString qualifier = script.qualifier;
QString enclosingNamespace;
const int lastDotIndex = qualifier.lastIndexOf(QLatin1Char('.'));
if (lastDotIndex != -1) {
enclosingNamespace = qualifier.left(lastDotIndex);
qualifier = qualifier.mid(lastDotIndex+1);
}
compiledData->importCache->add(qualifier, scriptIndex, enclosingNamespace);
QQmlScriptData *scriptData = script.script->scriptData();
scriptData->addref();
compiledData->scripts << scriptData;
}
// Compile JS binding expressions and signal handlers
JSCodeGen jsCodeGen(typeData->finalUrlString(), parsedQML->code, &parsedQML->jsModule, &parsedQML->jsParserEngine, parsedQML->program, compiledData->importCache);
const QVector<int> runtimeFunctionIndices = jsCodeGen.generateJSCodeForFunctionsAndBindings(parsedQML->functions);
QV4::ExecutionEngine *v4 = engine->v4engine();
QScopedPointer<QQmlJS::EvalInstructionSelection> isel(v4->iselFactory->create(engine, v4->executableAllocator, &parsedQML->jsModule, &parsedQML->jsGenerator));
isel->setUseFastLookups(false);
QV4::CompiledData::CompilationUnit *jsUnit = isel->compile(/*generated unit data*/false);
// Generate QML compiled type data structures
QmlUnitGenerator qmlGenerator;
QV4::CompiledData::QmlUnit *qmlUnit = qmlGenerator.generate(*parsedQML, runtimeFunctionIndices);
if (jsUnit) {
Q_ASSERT(!jsUnit->data);
jsUnit->ownsData = false;
jsUnit->data = &qmlUnit->header;
}
compiledData->compilationUnit = jsUnit;
if (compiledData->compilationUnit)
compiledData->compilationUnit->ref();
compiledData->qmlUnit = qmlUnit; // ownership transferred to m_compiledData
// Resolve component boundaries and aliases
{
// Scan for components, determine their scopes and resolve aliases within the scope.
QQmlComponentAndAliasResolver resolver(compiledData->url, compiledData->qmlUnit, compiledData->resolvedTypes, compiledData->propertyCaches,
&compiledData->datas, &compiledData->objectIndexToIdForRoot, &compiledData->objectIndexToIdPerComponent);
if (!resolver.resolve()) {
errors << resolver.errors;
return false;
}
}
// Add to type registry of composites
if (compiledData->isCompositeType())
engine->registerInternalCompositeType(compiledData);
else {
const QV4::CompiledData::Object *obj = qmlUnit->objectAt(qmlUnit->indexOfRootObject);
QQmlCompiledData::TypeReference typeRef = compiledData->resolvedTypes.value(obj->inheritedTypeNameIndex);
if (typeRef.component) {
compiledData->metaTypeId = typeRef.component->metaTypeId;
compiledData->listMetaTypeId = typeRef.component->listMetaTypeId;
} else {
compiledData->metaTypeId = typeRef.type->typeId();
compiledData->listMetaTypeId = typeRef.type->qListTypeId();
}
}
// Sanity check property bindings
QQmlPropertyValidator validator(compiledData->url, compiledData->qmlUnit, compiledData->resolvedTypes,
compiledData->propertyCaches, compiledData->objectIndexToIdPerComponent,
&compiledData->customParserData);
if (!validator.validate()) {
errors << validator.errors;
return false;
}
return errors.isEmpty();
}
QT_END_NAMESPACE
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