diff options
Diffstat (limited to 'src/qml/compiler/qv4compileddata.cpp')
| -rw-r--r-- | src/qml/compiler/qv4compileddata.cpp | 1027 |
1 files changed, 0 insertions, 1027 deletions
diff --git a/src/qml/compiler/qv4compileddata.cpp b/src/qml/compiler/qv4compileddata.cpp deleted file mode 100644 index 9fb91e9140..0000000000 --- a/src/qml/compiler/qv4compileddata.cpp +++ /dev/null @@ -1,1027 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQml module 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 The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/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 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qv4compileddata_p.h" -#include <private/qv4value_p.h> -#ifndef V4_BOOTSTRAP -#include <private/qv4engine_p.h> -#include <private/qv4function_p.h> -#include <private/qv4objectproto_p.h> -#include <private/qv4lookup_p.h> -#include <private/qv4regexpobject_p.h> -#include <private/qv4regexp_p.h> -#include <private/qqmlpropertycache_p.h> -#include <private/qqmltypeloader_p.h> -#include <private/qqmlengine_p.h> -#include <private/qv4vme_moth_p.h> -#include <private/qv4module_p.h> -#include <private/qv4qobjectwrapper_p.h> -#include <private/qqmlvaluetypewrapper_p.h> -#include "qv4compilationunitmapper_p.h" -#include <QQmlPropertyMap> -#include <QDateTime> -#include <QFile> -#include <QFileInfo> -#include <QScopedValueRollback> -#include <QStandardPaths> -#include <QDir> -#include <private/qv4identifiertable_p.h> -#endif -#include <private/qqmlirbuilder_p.h> -#include <QCoreApplication> -#include <QCryptographicHash> -#include <QSaveFile> -#include <QScopeGuard> - -// generated by qmake: -#include "qml_compile_hash_p.h" - -#include <algorithm> - -QT_BEGIN_NAMESPACE - -namespace QV4 { - -namespace CompiledData { - -#if defined(QML_COMPILE_HASH) -# ifdef Q_OS_LINUX -// Place on a separate section on Linux so it's easier to check from outside -// what the hash version is. -__attribute__((section(".qml_compile_hash"))) -# endif -const char qml_compile_hash[48 + 1] = QML_COMPILE_HASH; -static_assert(sizeof(Unit::libraryVersionHash) >= QML_COMPILE_HASH_LENGTH + 1, "Compile hash length exceeds reserved size in data structure. Please adjust and bump the format version"); -#else -# error "QML_COMPILE_HASH must be defined for the build of QtDeclarative to ensure version checking for cache files" -#endif - - -CompilationUnit::CompilationUnit(const Unit *unitData, const QString &fileName, const QString &finalUrlString) -{ - setUnitData(unitData, nullptr, fileName, finalUrlString); -} - -CompilationUnit::~CompilationUnit() -{ -#ifndef V4_BOOTSTRAP - unlink(); -#endif - - if (data) { - if (data->qmlUnit() != qmlData) - free(const_cast<QmlUnit *>(qmlData)); - qmlData = nullptr; - -#ifndef V4_BOOTSTRAP - if (!(data->flags & QV4::CompiledData::Unit::StaticData)) - free(const_cast<Unit *>(data)); -#else - // Unconditionally free the memory. In the dev tools we create units that have - // the flag set and will be saved to disk, so intended to persist later. - free(const_cast<Unit *>(data)); -#endif - } - data = nullptr; -#if Q_BYTE_ORDER == Q_BIG_ENDIAN - delete [] constants; - constants = nullptr; -#endif - - delete [] imports; - imports = nullptr; -} -#ifndef V4_BOOTSTRAP - -QString CompilationUnit::localCacheFilePath(const QUrl &url) -{ - const QString localSourcePath = QQmlFile::urlToLocalFileOrQrc(url); - const QString cacheFileSuffix = QFileInfo(localSourcePath + QLatin1Char('c')).completeSuffix(); - QCryptographicHash fileNameHash(QCryptographicHash::Sha1); - fileNameHash.addData(localSourcePath.toUtf8()); - QString directory = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + QLatin1String("/qmlcache/"); - QDir::root().mkpath(directory); - return directory + QString::fromUtf8(fileNameHash.result().toHex()) + QLatin1Char('.') + cacheFileSuffix; -} - -QV4::Function *CompilationUnit::linkToEngine(ExecutionEngine *engine) -{ - this->engine = engine; - engine->compilationUnits.insert(this); - - Q_ASSERT(!runtimeStrings); - Q_ASSERT(data); - const quint32 stringCount = totalStringCount(); - runtimeStrings = (QV4::Heap::String **)malloc(stringCount * sizeof(QV4::Heap::String*)); - // memset the strings to 0 in case a GC run happens while we're within the loop below - memset(runtimeStrings, 0, stringCount * sizeof(QV4::Heap::String*)); - for (uint i = 0; i < stringCount; ++i) - runtimeStrings[i] = engine->newString(stringAt(i)); - - runtimeRegularExpressions = new QV4::Value[data->regexpTableSize]; - // memset the regexps to 0 in case a GC run happens while we're within the loop below - memset(runtimeRegularExpressions, 0, data->regexpTableSize * sizeof(QV4::Value)); - for (uint i = 0; i < data->regexpTableSize; ++i) { - const CompiledData::RegExp *re = data->regexpAt(i); - uint f = re->flags; - const CompiledData::RegExp::Flags flags = static_cast<CompiledData::RegExp::Flags>(f); - runtimeRegularExpressions[i] = QV4::RegExp::create(engine, stringAt(re->stringIndex), flags); - } - - if (data->lookupTableSize) { - runtimeLookups = new QV4::Lookup[data->lookupTableSize]; - memset(runtimeLookups, 0, data->lookupTableSize * sizeof(QV4::Lookup)); - const CompiledData::Lookup *compiledLookups = data->lookupTable(); - for (uint i = 0; i < data->lookupTableSize; ++i) { - QV4::Lookup *l = runtimeLookups + i; - - Lookup::Type type = Lookup::Type(uint(compiledLookups[i].type_and_flags)); - if (type == CompiledData::Lookup::Type_Getter) - l->getter = QV4::Lookup::getterGeneric; - else if (type == CompiledData::Lookup::Type_Setter) - l->setter = QV4::Lookup::setterGeneric; - else if (type == CompiledData::Lookup::Type_GlobalGetter) - l->globalGetter = QV4::Lookup::globalGetterGeneric; - else if (type == CompiledData::Lookup::Type_QmlContextPropertyGetter) - l->qmlContextPropertyGetter = QQmlContextWrapper::resolveQmlContextPropertyLookupGetter; - l->nameIndex = compiledLookups[i].nameIndex; - } - } - - if (data->jsClassTableSize) { - runtimeClasses = (QV4::Heap::InternalClass **)malloc(data->jsClassTableSize * sizeof(QV4::Heap::InternalClass *)); - // memset the regexps to 0 in case a GC run happens while we're within the loop below - memset(runtimeClasses, 0, data->jsClassTableSize * sizeof(QV4::Heap::InternalClass *)); - for (uint i = 0; i < data->jsClassTableSize; ++i) { - int memberCount = 0; - const CompiledData::JSClassMember *member = data->jsClassAt(i, &memberCount); - runtimeClasses[i] = engine->internalClasses(QV4::ExecutionEngine::Class_Object); - for (int j = 0; j < memberCount; ++j, ++member) - runtimeClasses[i] = runtimeClasses[i]->addMember(engine->identifierTable->asPropertyKey(runtimeStrings[member->nameOffset]), member->isAccessor ? QV4::Attr_Accessor : QV4::Attr_Data); - } - } - - runtimeFunctions.resize(data->functionTableSize); - for (int i = 0 ;i < runtimeFunctions.size(); ++i) { - const QV4::CompiledData::Function *compiledFunction = data->functionAt(i); - runtimeFunctions[i] = new QV4::Function(engine, this, compiledFunction); - } - - Scope scope(engine); - Scoped<InternalClass> ic(scope); - - runtimeBlocks.resize(data->blockTableSize); - for (int i = 0 ;i < runtimeBlocks.size(); ++i) { - const QV4::CompiledData::Block *compiledBlock = data->blockAt(i); - ic = engine->internalClasses(EngineBase::Class_CallContext); - - // first locals - const quint32_le *localsIndices = compiledBlock->localsTable(); - for (quint32 j = 0; j < compiledBlock->nLocals; ++j) - ic = ic->addMember(engine->identifierTable->asPropertyKey(runtimeStrings[localsIndices[j]]), Attr_NotConfigurable); - runtimeBlocks[i] = ic->d(); - } - - static const bool showCode = qEnvironmentVariableIsSet("QV4_SHOW_BYTECODE"); - if (showCode) { - qDebug() << "=== Constant table"; - Moth::dumpConstantTable(constants, data->constantTableSize); - qDebug() << "=== String table"; - for (uint i = 0, end = totalStringCount(); i < end; ++i) - qDebug() << " " << i << ":" << runtimeStrings[i]->toQString(); - qDebug() << "=== Closure table"; - for (uint i = 0; i < data->functionTableSize; ++i) - qDebug() << " " << i << ":" << runtimeFunctions[i]->name()->toQString(); - qDebug() << "root function at index " << (data->indexOfRootFunction != -1 ? data->indexOfRootFunction : 0); - } - - if (data->indexOfRootFunction != -1) - return runtimeFunctions[data->indexOfRootFunction]; - else - return nullptr; -} - -Heap::Object *CompilationUnit::templateObjectAt(int index) const -{ - Q_ASSERT(index < int(data->templateObjectTableSize)); - if (!templateObjects.size()) - templateObjects.resize(data->templateObjectTableSize); - Heap::Object *o = templateObjects.at(index); - if (o) - return o; - - // create the template object - Scope scope(engine); - const CompiledData::TemplateObject *t = data->templateObjectAt(index); - Scoped<ArrayObject> a(scope, engine->newArrayObject(t->size)); - Scoped<ArrayObject> raw(scope, engine->newArrayObject(t->size)); - ScopedValue s(scope); - for (uint i = 0; i < t->size; ++i) { - s = runtimeStrings[t->stringIndexAt(i)]; - a->arraySet(i, s); - s = runtimeStrings[t->rawStringIndexAt(i)]; - raw->arraySet(i, s); - } - - ObjectPrototype::method_freeze(engine->functionCtor(), nullptr, raw, 1); - a->defineReadonlyProperty(QStringLiteral("raw"), raw); - ObjectPrototype::method_freeze(engine->functionCtor(), nullptr, a, 1); - - templateObjects[index] = a->objectValue()->d(); - return templateObjects.at(index); -} - -void CompilationUnit::unlink() -{ - if (engine) - nextCompilationUnit.remove(); - - if (isRegisteredWithEngine) { - Q_ASSERT(data && propertyCaches.count() > 0 && propertyCaches.at(/*root object*/0)); - if (qmlEngine) - qmlEngine->unregisterInternalCompositeType(this); - QQmlMetaType::unregisterInternalCompositeType(this); - isRegisteredWithEngine = false; - } - - propertyCaches.clear(); - - if (runtimeLookups) { - for (uint i = 0; i < data->lookupTableSize; ++i) { - QV4::Lookup &l = runtimeLookups[i]; - if (l.getter == QV4::QObjectWrapper::lookupGetter) { - if (QQmlPropertyCache *pc = l.qobjectLookup.propertyCache) - pc->release(); - } else if (l.getter == QQmlValueTypeWrapper::lookupGetter) { - if (QQmlPropertyCache *pc = l.qgadgetLookup.propertyCache) - pc->release(); - } - - if (l.qmlContextPropertyGetter == QQmlContextWrapper::lookupScopeObjectProperty) { - if (QQmlPropertyCache *pc = l.qobjectLookup.propertyCache) - pc->release(); - } - } - } - - dependentScripts.clear(); - - typeNameCache = nullptr; - - qDeleteAll(resolvedTypes); - resolvedTypes.clear(); - - engine = nullptr; - qmlEngine = nullptr; - free(runtimeStrings); - runtimeStrings = nullptr; - delete [] runtimeLookups; - runtimeLookups = nullptr; - delete [] runtimeRegularExpressions; - runtimeRegularExpressions = nullptr; - free(runtimeClasses); - runtimeClasses = nullptr; - qDeleteAll(runtimeFunctions); - runtimeFunctions.clear(); -} - -void CompilationUnit::markObjects(QV4::MarkStack *markStack) -{ - if (runtimeStrings) { - for (uint i = 0, end = totalStringCount(); i < end; ++i) - if (runtimeStrings[i]) - runtimeStrings[i]->mark(markStack); - } - if (runtimeRegularExpressions) { - for (uint i = 0; i < data->regexpTableSize; ++i) - runtimeRegularExpressions[i].mark(markStack); - } - if (runtimeClasses) { - for (uint i = 0; i < data->jsClassTableSize; ++i) - if (runtimeClasses[i]) - runtimeClasses[i]->mark(markStack); - } - for (QV4::Function *f : qAsConst(runtimeFunctions)) - if (f && f->internalClass) - f->internalClass->mark(markStack); - for (QV4::Heap::InternalClass *c : qAsConst(runtimeBlocks)) - if (c) - c->mark(markStack); - - for (QV4::Heap::Object *o : qAsConst(templateObjects)) - if (o) - o->mark(markStack); - - if (runtimeLookups) { - for (uint i = 0; i < data->lookupTableSize; ++i) - runtimeLookups[i].markObjects(markStack); - } - - if (m_module) - m_module->mark(markStack); -} - -IdentifierHash CompilationUnit::createNamedObjectsPerComponent(int componentObjectIndex) -{ - IdentifierHash namedObjectCache(engine); - const CompiledData::Object *component = objectAt(componentObjectIndex); - const quint32_le *namedObjectIndexPtr = component->namedObjectsInComponentTable(); - for (quint32 i = 0; i < component->nNamedObjectsInComponent; ++i, ++namedObjectIndexPtr) { - const CompiledData::Object *namedObject = objectAt(*namedObjectIndexPtr); - namedObjectCache.add(runtimeStrings[namedObject->idNameIndex], namedObject->id); - } - return *namedObjectsPerComponentCache.insert(componentObjectIndex, namedObjectCache); -} - -void CompilationUnit::finalizeCompositeType(QQmlEnginePrivate *qmlEngine) -{ - this->qmlEngine = qmlEngine; - - // Add to type registry of composites - if (propertyCaches.needsVMEMetaObject(/*root object*/0)) { - QQmlMetaType::registerInternalCompositeType(this); - qmlEngine->registerInternalCompositeType(this); - } else { - const QV4::CompiledData::Object *obj = objectAt(/*root object*/0); - auto *typeRef = resolvedTypes.value(obj->inheritedTypeNameIndex); - Q_ASSERT(typeRef); - if (typeRef->compilationUnit) { - metaTypeId = typeRef->compilationUnit->metaTypeId; - listMetaTypeId = typeRef->compilationUnit->listMetaTypeId; - } else { - metaTypeId = typeRef->type.typeId(); - listMetaTypeId = typeRef->type.qListTypeId(); - } - } - - // Collect some data for instantiation later. - int bindingCount = 0; - int parserStatusCount = 0; - int objectCount = 0; - for (quint32 i = 0, count = this->objectCount(); i < count; ++i) { - const QV4::CompiledData::Object *obj = objectAt(i); - bindingCount += obj->nBindings; - if (auto *typeRef = resolvedTypes.value(obj->inheritedTypeNameIndex)) { - if (typeRef->type.isValid()) { - if (typeRef->type.parserStatusCast() != -1) - ++parserStatusCount; - } - ++objectCount; - if (typeRef->compilationUnit) { - bindingCount += typeRef->compilationUnit->totalBindingsCount; - parserStatusCount += typeRef->compilationUnit->totalParserStatusCount; - objectCount += typeRef->compilationUnit->totalObjectCount; - } - } - } - - totalBindingsCount = bindingCount; - totalParserStatusCount = parserStatusCount; - totalObjectCount = objectCount; -} - -bool CompilationUnit::verifyChecksum(const DependentTypesHasher &dependencyHasher) const -{ - if (!dependencyHasher) { - for (size_t i = 0; i < sizeof(data->dependencyMD5Checksum); ++i) { - if (data->dependencyMD5Checksum[i] != 0) - return false; - } - return true; - } - QCryptographicHash hash(QCryptographicHash::Md5); - if (!dependencyHasher(&hash)) - return false; - QByteArray checksum = hash.result(); - Q_ASSERT(checksum.size() == sizeof(data->dependencyMD5Checksum)); - return memcmp(data->dependencyMD5Checksum, checksum.constData(), - sizeof(data->dependencyMD5Checksum)) == 0; -} - -QStringList CompilationUnit::moduleRequests() const -{ - QStringList requests; - requests.reserve(data->moduleRequestTableSize); - for (uint i = 0; i < data->moduleRequestTableSize; ++i) - requests << stringAt(data->moduleRequestTable()[i]); - return requests; -} - -Heap::Module *CompilationUnit::instantiate(ExecutionEngine *engine) -{ - if (isESModule() && m_module) - return m_module; - - if (data->indexOfRootFunction < 0) - return nullptr; - - if (!this->engine) - linkToEngine(engine); - - Scope scope(engine); - Scoped<Module> module(scope, engine->memoryManager->allocate<Module>(engine, this)); - - if (isESModule()) - m_module = module->d(); - - for (const QString &request: moduleRequests()) { - auto dependentModuleUnit = engine->loadModule(QUrl(request), this); - if (engine->hasException) - return nullptr; - dependentModuleUnit->instantiate(engine); - } - - ScopedString importName(scope); - - const uint importCount = data->importEntryTableSize; - if (importCount > 0) { - imports = new const Value *[importCount]; - memset(imports, 0, importCount * sizeof(Value *)); - } - for (uint i = 0; i < importCount; ++i) { - const CompiledData::ImportEntry &entry = data->importEntryTable()[i]; - auto dependentModuleUnit = engine->loadModule(QUrl(stringAt(entry.moduleRequest)), this); - importName = runtimeStrings[entry.importName]; - const Value *valuePtr = dependentModuleUnit->resolveExport(importName); - if (!valuePtr) { - QString referenceErrorMessage = QStringLiteral("Unable to resolve import reference "); - referenceErrorMessage += importName->toQString(); - engine->throwReferenceError(referenceErrorMessage, fileName(), entry.location.line, entry.location.column); - return nullptr; - } - imports[i] = valuePtr; - } - - for (uint i = 0; i < data->indirectExportEntryTableSize; ++i) { - const CompiledData::ExportEntry &entry = data->indirectExportEntryTable()[i]; - auto dependentModuleUnit = engine->loadModule(QUrl(stringAt(entry.moduleRequest)), this); - if (!dependentModuleUnit) - return nullptr; - - ScopedString importName(scope, runtimeStrings[entry.importName]); - if (!dependentModuleUnit->resolveExport(importName)) { - QString referenceErrorMessage = QStringLiteral("Unable to resolve re-export reference "); - referenceErrorMessage += importName->toQString(); - engine->throwReferenceError(referenceErrorMessage, fileName(), entry.location.line, entry.location.column); - return nullptr; - } - } - - return module->d(); -} - -const Value *CompilationUnit::resolveExport(QV4::String *exportName) -{ - QVector<ResolveSetEntry> resolveSet; - return resolveExportRecursively(exportName, &resolveSet); -} - -QStringList CompilationUnit::exportedNames() const -{ - QStringList names; - QVector<const CompiledData::CompilationUnit*> exportNameSet; - getExportedNamesRecursively(&names, &exportNameSet); - names.sort(); - auto last = std::unique(names.begin(), names.end()); - names.erase(last, names.end()); - return names; -} - -const Value *CompilationUnit::resolveExportRecursively(QV4::String *exportName, QVector<ResolveSetEntry> *resolveSet) -{ - if (!m_module) - return nullptr; - - for (const auto &entry: *resolveSet) - if (entry.module == this && entry.exportName->isEqualTo(exportName)) - return nullptr; - - (*resolveSet) << ResolveSetEntry(this, exportName); - - if (exportName->toQString() == QLatin1String("*")) - return &m_module->self; - - Scope scope(engine); - - if (auto localExport = lookupNameInExportTable(data->localExportEntryTable(), data->localExportEntryTableSize, exportName)) { - ScopedString localName(scope, runtimeStrings[localExport->localName]); - uint index = m_module->scope->internalClass->indexOfValueOrGetter(localName->toPropertyKey()); - if (index == UINT_MAX) - return nullptr; - if (index >= m_module->scope->locals.size) - return imports[index - m_module->scope->locals.size]; - return &m_module->scope->locals[index]; - } - - if (auto indirectExport = lookupNameInExportTable(data->indirectExportEntryTable(), data->indirectExportEntryTableSize, exportName)) { - auto dependentModuleUnit = engine->loadModule(QUrl(stringAt(indirectExport->moduleRequest)), this); - if (!dependentModuleUnit) - return nullptr; - ScopedString importName(scope, runtimeStrings[indirectExport->importName]); - return dependentModuleUnit->resolveExportRecursively(importName, resolveSet); - } - - - if (exportName->toQString() == QLatin1String("default")) - return nullptr; - - const Value *starResolution = nullptr; - - for (uint i = 0; i < data->starExportEntryTableSize; ++i) { - const CompiledData::ExportEntry &entry = data->starExportEntryTable()[i]; - auto dependentModuleUnit = engine->loadModule(QUrl(stringAt(entry.moduleRequest)), this); - if (!dependentModuleUnit) - return nullptr; - - const Value *resolution = dependentModuleUnit->resolveExportRecursively(exportName, resolveSet); - // ### handle ambiguous - if (resolution) { - if (!starResolution) { - starResolution = resolution; - continue; - } - if (resolution != starResolution) - return nullptr; - } - } - - return starResolution; -} - -const ExportEntry *CompilationUnit::lookupNameInExportTable(const ExportEntry *firstExportEntry, int tableSize, QV4::String *name) const -{ - const CompiledData::ExportEntry *lastExportEntry = firstExportEntry + tableSize; - auto matchingExport = std::lower_bound(firstExportEntry, lastExportEntry, name, [this](const CompiledData::ExportEntry &lhs, QV4::String *name) { - return stringAt(lhs.exportName) < name->toQString(); - }); - if (matchingExport == lastExportEntry || stringAt(matchingExport->exportName) != name->toQString()) - return nullptr; - return matchingExport; -} - -void CompilationUnit::getExportedNamesRecursively(QStringList *names, QVector<const CompilationUnit*> *exportNameSet, bool includeDefaultExport) const -{ - if (exportNameSet->contains(this)) - return; - exportNameSet->append(this); - - const auto append = [names, includeDefaultExport](const QString &name) { - if (!includeDefaultExport && name == QLatin1String("default")) - return; - names->append(name); - }; - - for (uint i = 0; i < data->localExportEntryTableSize; ++i) { - const CompiledData::ExportEntry &entry = data->localExportEntryTable()[i]; - append(stringAt(entry.exportName)); - } - - for (uint i = 0; i < data->indirectExportEntryTableSize; ++i) { - const CompiledData::ExportEntry &entry = data->indirectExportEntryTable()[i]; - append(stringAt(entry.exportName)); - } - - for (uint i = 0; i < data->starExportEntryTableSize; ++i) { - const CompiledData::ExportEntry &entry = data->starExportEntryTable()[i]; - auto dependentModuleUnit = engine->loadModule(QUrl(stringAt(entry.moduleRequest)), this); - if (!dependentModuleUnit) - return; - dependentModuleUnit->getExportedNamesRecursively(names, exportNameSet, /*includeDefaultExport*/false); - } -} - -void CompilationUnit::evaluate() -{ - QV4::Scope scope(engine); - QV4::Scoped<Module> module(scope, m_module); - module->evaluate(); -} - -void CompilationUnit::evaluateModuleRequests() -{ - for (const QString &request: moduleRequests()) { - auto dependentModuleUnit = engine->loadModule(QUrl(request), this); - if (engine->hasException) - return; - dependentModuleUnit->evaluate(); - if (engine->hasException) - return; - } -} - -bool CompilationUnit::loadFromDisk(const QUrl &url, const QDateTime &sourceTimeStamp, QString *errorString) -{ - if (!QQmlFile::isLocalFile(url)) { - *errorString = QStringLiteral("File has to be a local file."); - return false; - } - - const QString sourcePath = QQmlFile::urlToLocalFileOrQrc(url); - QScopedPointer<CompilationUnitMapper> cacheFile(new CompilationUnitMapper()); - - const QStringList cachePaths = { sourcePath + QLatin1Char('c'), localCacheFilePath(url) }; - for (const QString &cachePath : cachePaths) { - CompiledData::Unit *mappedUnit = cacheFile->open(cachePath, sourceTimeStamp, errorString); - if (!mappedUnit) - continue; - - const Unit * const oldDataPtr = (data && !(data->flags & QV4::CompiledData::Unit::StaticData)) ? data : nullptr; - const Unit *oldData = data; - auto dataPtrRevert = qScopeGuard([this, oldData](){ - setUnitData(oldData); - }); - setUnitData(mappedUnit); - - if (data->sourceFileIndex != 0 && sourcePath != QQmlFile::urlToLocalFileOrQrc(stringAt(data->sourceFileIndex))) { - *errorString = QStringLiteral("QML source file has moved to a different location."); - continue; - } - - dataPtrRevert.dismiss(); - free(const_cast<Unit*>(oldDataPtr)); - backingFile.reset(cacheFile.take()); - return true; - } - - return false; -} - -#endif // V4_BOOTSTRAP - -#if defined(V4_BOOTSTRAP) -bool CompilationUnit::saveToDisk(const QString &outputFileName, QString *errorString) -#else -bool CompilationUnit::saveToDisk(const QUrl &unitUrl, QString *errorString) -#endif -{ - errorString->clear(); - -#if !defined(V4_BOOTSTRAP) - if (data->sourceTimeStamp == 0) { - *errorString = QStringLiteral("Missing time stamp for source file"); - return false; - } - - if (!QQmlFile::isLocalFile(unitUrl)) { - *errorString = QStringLiteral("File has to be a local file."); - return false; - } - const QString outputFileName = localCacheFilePath(unitUrl); -#endif - -#if QT_CONFIG(temporaryfile) - // Foo.qml -> Foo.qmlc - QSaveFile cacheFile(outputFileName); - if (!cacheFile.open(QIODevice::WriteOnly | QIODevice::Truncate)) { - *errorString = cacheFile.errorString(); - return false; - } - - QByteArray modifiedUnit; - modifiedUnit.resize(data->unitSize); - memcpy(modifiedUnit.data(), data, data->unitSize); - const char *dataPtr = modifiedUnit.data(); - Unit *unitPtr; - memcpy(&unitPtr, &dataPtr, sizeof(unitPtr)); - unitPtr->flags |= Unit::StaticData; - - qint64 headerWritten = cacheFile.write(modifiedUnit); - if (headerWritten != modifiedUnit.size()) { - *errorString = cacheFile.errorString(); - return false; - } - - if (!cacheFile.commit()) { - *errorString = cacheFile.errorString(); - return false; - } - - return true; -#else - Q_UNUSED(outputFileName) - *errorString = QStringLiteral("features.temporaryfile is disabled."); - return false; -#endif // QT_CONFIG(temporaryfile) -} - -void CompilationUnit::setUnitData(const Unit *unitData, const QmlUnit *qmlUnit, - const QString &fileName, const QString &finalUrlString) -{ - data = unitData; - qmlData = nullptr; -#if Q_BYTE_ORDER == Q_BIG_ENDIAN - delete [] constants; -#endif - constants = nullptr; - m_fileName.clear(); - m_finalUrlString.clear(); - if (!data) - return; - - qmlData = qmlUnit ? qmlUnit : data->qmlUnit(); - -#if Q_BYTE_ORDER == Q_BIG_ENDIAN - Value *bigEndianConstants = new Value[data->constantTableSize]; - const quint64_le *littleEndianConstants = data->constants(); - for (uint i = 0; i < data->constantTableSize; ++i) - bigEndianConstants[i] = Value::fromReturnedValue(littleEndianConstants[i]); - constants = bigEndianConstants; -#else - constants = reinterpret_cast<const Value*>(data->constants()); -#endif - - m_fileName = !fileName.isEmpty() ? fileName : stringAt(data->sourceFileIndex); - m_finalUrlString = !finalUrlString.isEmpty() ? finalUrlString : stringAt(data->finalUrlIndex); -} - -#ifndef V4_BOOTSTRAP -QString Binding::valueAsString(const CompilationUnit *unit) const -{ - switch (type) { - case Type_Script: - case Type_String: - return unit->stringAt(stringIndex); - case Type_Boolean: - return value.b ? QStringLiteral("true") : QStringLiteral("false"); - case Type_Number: - return QString::number(valueAsNumber(unit->constants)); - case Type_Invalid: - return QString(); -#if !QT_CONFIG(translation) - case Type_TranslationById: - case Type_Translation: - return unit->stringAt(unit->unitData()->translations()[value.translationDataIndex].stringIndex); -#else - case Type_TranslationById: { - const TranslationData &translation = unit->unitData()->translations()[value.translationDataIndex]; - QByteArray id = unit->stringAt(translation.stringIndex).toUtf8(); - return qtTrId(id.constData(), translation.number); - } - case Type_Translation: { - const TranslationData &translation = unit->unitData()->translations()[value.translationDataIndex]; - // This code must match that in the qsTr() implementation - const QString &path = unit->fileName(); - int lastSlash = path.lastIndexOf(QLatin1Char('/')); - QStringRef context = (lastSlash > -1) ? path.midRef(lastSlash + 1, path.length() - lastSlash - 5) - : QStringRef(); - QByteArray contextUtf8 = context.toUtf8(); - QByteArray comment = unit->stringAt(translation.commentIndex).toUtf8(); - QByteArray text = unit->stringAt(translation.stringIndex).toUtf8(); - return QCoreApplication::translate(contextUtf8.constData(), text.constData(), - comment.constData(), translation.number); - } -#endif - default: - break; - } - return QString(); -} - -//reverse of Lexer::singleEscape() -QString Binding::escapedString(const QString &string) -{ - QString tmp = QLatin1String("\""); - for (int i = 0; i < string.length(); ++i) { - const QChar &c = string.at(i); - switch (c.unicode()) { - case 0x08: - tmp += QLatin1String("\\b"); - break; - case 0x09: - tmp += QLatin1String("\\t"); - break; - case 0x0A: - tmp += QLatin1String("\\n"); - break; - case 0x0B: - tmp += QLatin1String("\\v"); - break; - case 0x0C: - tmp += QLatin1String("\\f"); - break; - case 0x0D: - tmp += QLatin1String("\\r"); - break; - case 0x22: - tmp += QLatin1String("\\\""); - break; - case 0x27: - tmp += QLatin1String("\\\'"); - break; - case 0x5C: - tmp += QLatin1String("\\\\"); - break; - default: - tmp += c; - break; - } - } - tmp += QLatin1Char('\"'); - return tmp; -} - -QString Binding::valueAsScriptString(const CompilationUnit *unit) const -{ - if (type == Type_String) - return escapedString(unit->stringAt(stringIndex)); - else - return valueAsString(unit); -} - -/*! -Returns the property cache, if one alread exists. The cache is not referenced. -*/ -QQmlRefPointer<QQmlPropertyCache> ResolvedTypeReference::propertyCache() const -{ - if (type.isValid()) - return typePropertyCache; - else - return compilationUnit->rootPropertyCache(); -} - -/*! -Returns the property cache, creating one if it doesn't already exist. The cache is not referenced. -*/ -QQmlRefPointer<QQmlPropertyCache> ResolvedTypeReference::createPropertyCache(QQmlEngine *engine) -{ - if (typePropertyCache) { - return typePropertyCache; - } else if (type.isValid()) { - typePropertyCache = QQmlEnginePrivate::get(engine)->cache(type.metaObject(), minorVersion); - return typePropertyCache; - } else { - return compilationUnit->rootPropertyCache(); - } -} - -bool ResolvedTypeReference::addToHash(QCryptographicHash *hash, QQmlEngine *engine) -{ - if (type.isValid()) { - bool ok = false; - hash->addData(createPropertyCache(engine)->checksum(&ok)); - return ok; - } - if (!compilationUnit) - return false; - hash->addData(compilationUnit->unitData()->md5Checksum, sizeof(compilationUnit->unitData()->md5Checksum)); - return true; -} - -template <typename T> -bool qtTypeInherits(const QMetaObject *mo) { - while (mo) { - if (mo == &T::staticMetaObject) - return true; - mo = mo->superClass(); - } - return false; -} - -void ResolvedTypeReference::doDynamicTypeCheck() -{ - const QMetaObject *mo = nullptr; - if (typePropertyCache) - mo = typePropertyCache->firstCppMetaObject(); - else if (type.isValid()) - mo = type.metaObject(); - else if (compilationUnit) - mo = compilationUnit->rootPropertyCache()->firstCppMetaObject(); - isFullyDynamicType = qtTypeInherits<QQmlPropertyMap>(mo); -} - -bool ResolvedTypeReferenceMap::addToHash(QCryptographicHash *hash, QQmlEngine *engine) const -{ - for (auto it = constBegin(), end = constEnd(); it != end; ++it) { - if (!it.value()->addToHash(hash, engine)) - return false; - } - - return true; -} - -#endif - -void CompilationUnit::destroy() -{ -#if !defined(V4_BOOTSTRAP) - if (qmlEngine) - QQmlEnginePrivate::deleteInEngineThread(qmlEngine, this); - else -#endif - delete this; -} - - -void Unit::generateChecksum() -{ -#ifndef V4_BOOTSTRAP - QCryptographicHash hash(QCryptographicHash::Md5); - - const int checksummableDataOffset = offsetof(QV4::CompiledData::Unit, md5Checksum) + sizeof(md5Checksum); - - const char *dataPtr = reinterpret_cast<const char *>(this) + checksummableDataOffset; - hash.addData(dataPtr, unitSize - checksummableDataOffset); - - QByteArray checksum = hash.result(); - Q_ASSERT(checksum.size() == sizeof(md5Checksum)); - memcpy(md5Checksum, checksum.constData(), sizeof(md5Checksum)); -#else - memset(md5Checksum, 0, sizeof(md5Checksum)); -#endif -} - -bool Unit::verifyHeader(QDateTime expectedSourceTimeStamp, QString *errorString) const -{ -#ifndef V4_BOOTSTRAP - if (strncmp(magic, CompiledData::magic_str, sizeof(magic))) { - *errorString = QStringLiteral("Magic bytes in the header do not match"); - return false; - } - - if (version != quint32(QV4_DATA_STRUCTURE_VERSION)) { - *errorString = QString::fromUtf8("V4 data structure version mismatch. Found %1 expected %2").arg(version, 0, 16).arg(QV4_DATA_STRUCTURE_VERSION, 0, 16); - return false; - } - - if (qtVersion != quint32(QT_VERSION)) { - *errorString = QString::fromUtf8("Qt version mismatch. Found %1 expected %2").arg(qtVersion, 0, 16).arg(QT_VERSION, 0, 16); - return false; - } - - if (sourceTimeStamp) { - // Files from the resource system do not have any time stamps, so fall back to the application - // executable. - if (!expectedSourceTimeStamp.isValid()) - expectedSourceTimeStamp = QFileInfo(QCoreApplication::applicationFilePath()).lastModified(); - - if (expectedSourceTimeStamp.isValid() && expectedSourceTimeStamp.toMSecsSinceEpoch() != sourceTimeStamp) { - *errorString = QStringLiteral("QML source file has a different time stamp than cached file."); - return false; - } - } - -#if defined(QML_COMPILE_HASH) - if (qstrcmp(CompiledData::qml_compile_hash, libraryVersionHash) != 0) { - *errorString = QStringLiteral("QML library version mismatch. Expected compile hash does not match"); - return false; - } -#else -#error "QML_COMPILE_HASH must be defined for the build of QtDeclarative to ensure version checking for cache files" -#endif - - return true; -#else - Q_UNUSED(expectedSourceTimeStamp) - Q_UNUSED(errorString) - return false; -#endif -} - -Location &Location::operator=(const QQmlJS::AST::SourceLocation &astLocation) -{ - line = astLocation.startLine; - column = astLocation.startColumn; - return *this; -} - -} - -} - -QT_END_NAMESPACE |