diff options
Diffstat (limited to 'src/qml/qml/qqmlscriptdata.cpp')
-rw-r--r-- | src/qml/qml/qqmlscriptdata.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/qml/qml/qqmlscriptdata.cpp b/src/qml/qml/qqmlscriptdata.cpp new file mode 100644 index 0000000000..ae268ca904 --- /dev/null +++ b/src/qml/qml/qqmlscriptdata.cpp @@ -0,0 +1,166 @@ +/**************************************************************************** +** +** Copyright (C) 2019 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 <private/qqmlscriptdata_p.h> +#include <private/qqmlcontext_p.h> +#include <private/qqmlengine_p.h> +#include <private/qqmlscriptblob_p.h> +#include <private/qv4engine_p.h> +#include <private/qv4scopedvalue_p.h> +#include <private/qv4object_p.h> +#include <private/qv4qmlcontext_p.h> +#include <private/qv4module_p.h> + +QT_BEGIN_NAMESPACE + +QQmlScriptData::QQmlScriptData() + : typeNameCache(nullptr) + , m_loaded(false) +{ +} + +QQmlContextData *QQmlScriptData::qmlContextDataForContext(QQmlContextData *parentQmlContextData) +{ + Q_ASSERT(parentQmlContextData && parentQmlContextData->engine); + + if (m_precompiledScript->isESModule()) + return nullptr; + + auto qmlContextData = new QQmlContextData(); + + qmlContextData->isInternal = true; + qmlContextData->isJSContext = true; + if (m_precompiledScript->isSharedLibrary()) + qmlContextData->isPragmaLibraryContext = true; + else + qmlContextData->isPragmaLibraryContext = parentQmlContextData->isPragmaLibraryContext; + qmlContextData->baseUrl = url; + qmlContextData->baseUrlString = urlString; + + // For backward compatibility, if there are no imports, we need to use the + // imports from the parent context. See QTBUG-17518. + if (!typeNameCache->isEmpty()) { + qmlContextData->imports = typeNameCache; + } else if (!m_precompiledScript->isSharedLibrary()) { + qmlContextData->imports = parentQmlContextData->imports; + qmlContextData->importedScripts = parentQmlContextData->importedScripts; + } + + if (!m_precompiledScript->isSharedLibrary()) { + qmlContextData->setParent(parentQmlContextData); + } else { + qmlContextData->engine = parentQmlContextData->engine; // Fix for QTBUG-21620 + } + + QV4::ExecutionEngine *v4 = parentQmlContextData->engine->handle(); + QV4::Scope scope(v4); + QV4::ScopedObject scriptsArray(scope); + if (qmlContextData->importedScripts.isNullOrUndefined()) { + scriptsArray = v4->newArrayObject(scripts.count()); + qmlContextData->importedScripts.set(v4, scriptsArray); + } else { + scriptsArray = qmlContextData->importedScripts.valueRef(); + } + QV4::ScopedValue v(scope); + for (int ii = 0; ii < scripts.count(); ++ii) + scriptsArray->put(ii, (v = scripts.at(ii)->scriptData()->scriptValueForContext(qmlContextData))); + + return qmlContextData; +} + +QV4::ReturnedValue QQmlScriptData::scriptValueForContext(QQmlContextData *parentQmlContextData) +{ + if (m_loaded) + return m_value.value(); + + Q_ASSERT(parentQmlContextData && parentQmlContextData->engine); + QV4::ExecutionEngine *v4 = parentQmlContextData->engine->handle(); + QV4::Scope scope(v4); + + if (!hasEngine()) { + addToEngine(parentQmlContextData->engine); + addref(); + } + + QQmlContextDataRef qmlContextData = qmlContextDataForContext(parentQmlContextData); + QV4::Scoped<QV4::QmlContext> qmlExecutionContext(scope); + if (qmlContextData) + qmlExecutionContext = + QV4::QmlContext::create(v4->rootContext(), qmlContextData, /* scopeObject: */ nullptr); + + QV4::Scoped<QV4::Module> module(scope, m_precompiledScript->instantiate(v4)); + if (module) { + if (qmlContextData) { + module->d()->scope->outer.set(v4, qmlExecutionContext->d()); + qmlExecutionContext->d()->qml()->module.set(v4, module->d()); + } + + module->evaluate(); + } + + if (v4->hasException) { + QQmlError error = v4->catchExceptionAsQmlError(); + if (error.isValid()) + QQmlEnginePrivate::get(v4)->warning(error); + } + + QV4::ScopedValue value(scope); + if (qmlContextData) + value = qmlExecutionContext->d()->qml(); + else if (module) + value = module->d(); + + if (m_precompiledScript->isSharedLibrary() || m_precompiledScript->isESModule()) { + m_loaded = true; + m_value.set(v4, value); + } + + return value->asReturnedValue(); +} + +void QQmlScriptData::clear() +{ + typeNameCache = nullptr; + scripts.clear(); + + // An addref() was made when the QQmlCleanup was added to the engine. + release(); +} + +QT_END_NAMESPACE |