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authorAndrei Golubev <andrei.golubev@qt.io>2021-02-16 12:52:41 +0100
committerAndrei Golubev <andrei.golubev@qt.io>2021-12-17 08:57:27 +0100
commite7ce5abf24f04d1b071343f07ca28b6a5d9ad4b9 (patch)
treed02bcd3d19a7a2900311d34b8275fa6e9d376d7f /src/qml/qmltc/supportlibrary/qqmlcppbinding.cpp
parent6f2a1487b723206da5b4f363a0c9ddb6d7333367 (diff)
Use qmltc compiler prototype as a fallback implementation
Task-number: QTBUG-91927 Task-number: QTBUG-96041 Task-number: QTBUG-84368 Pick-to: 6.3 Change-Id: I47320b5f3ed8efff6fb234778df5fae5be5b64f2 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Diffstat (limited to 'src/qml/qmltc/supportlibrary/qqmlcppbinding.cpp')
-rw-r--r--src/qml/qmltc/supportlibrary/qqmlcppbinding.cpp147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/qml/qmltc/supportlibrary/qqmlcppbinding.cpp b/src/qml/qmltc/supportlibrary/qqmlcppbinding.cpp
new file mode 100644
index 0000000000..142f9be024
--- /dev/null
+++ b/src/qml/qmltc/supportlibrary/qqmlcppbinding.cpp
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 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 "qqmlcppbinding_p.h"
+
+#include <QtQml/qqmlengine.h>
+#include <QtQml/qqmlcontext.h>
+#include <QtCore/qmetaobject.h>
+
+#include <private/qqmltypedata_p.h>
+#include <private/qqmlpropertybinding_p.h>
+#include <private/qqmlbinding_p.h>
+#include <private/qv4qmlcontext_p.h>
+#include <private/qqmlproperty_p.h>
+#include <private/qqmlbinding_p.h>
+
+QT_BEGIN_NAMESPACE
+
+template<typename CreateBinding>
+inline decltype(auto) createBindingInScope(QObject *thisObject, CreateBinding create)
+{
+ QQmlEngine *qmlengine = qmlEngine(thisObject);
+ Q_ASSERT(qmlengine);
+ QV4::ExecutionEngine *v4 = qmlengine->handle();
+ Q_ASSERT(v4);
+
+ QQmlData *ddata = QQmlData::get(thisObject);
+ Q_ASSERT(ddata && ddata->outerContext);
+ QQmlRefPointer<QQmlContextData> ctxtdata = QQmlRefPointer<QQmlContextData>(ddata->outerContext);
+
+ QV4::Scope scope(v4);
+ QV4::ExecutionContext *executionCtx = v4->scriptContext();
+ QV4::Scoped<QV4::QmlContext> qmlContext(
+ scope, QV4::QmlContext::create(executionCtx, ctxtdata, thisObject));
+
+ return create(ctxtdata, qmlContext);
+}
+
+QUntypedPropertyBinding
+QQmlCppBinding::createBindingForBindable(const QV4::ExecutableCompilationUnit *unit,
+ QObject *thisObject, qsizetype functionIndex,
+ QObject *bindingTarget, int metaPropertyIndex,
+ int valueTypePropertyIndex, const QString &propertyName)
+{
+ Q_UNUSED(propertyName);
+
+ QV4::Function *v4Function = unit->runtimeFunctions.value(functionIndex, nullptr);
+ if (!v4Function) {
+ // TODO: align with existing logging of such
+ qCritical() << "invalid JavaScript function index (internal error)";
+ return QUntypedPropertyBinding();
+ }
+ if (metaPropertyIndex < 0) {
+ // TODO: align with existing logging of such
+ qCritical() << "invalid meta property index (internal error)";
+ return QUntypedPropertyBinding();
+ }
+
+ const QMetaObject *mo = bindingTarget->metaObject();
+ Q_ASSERT(mo);
+ QMetaProperty property = mo->property(metaPropertyIndex);
+ Q_ASSERT(valueTypePropertyIndex == -1 || QString::fromUtf8(property.name()) == propertyName);
+
+ return createBindingInScope(
+ thisObject,
+ [&](const QQmlRefPointer<QQmlContextData> &ctxt, QV4::ExecutionContext *scope) {
+ auto index = QQmlPropertyIndex(property.propertyIndex(), valueTypePropertyIndex);
+ return QQmlPropertyBinding::create(property.metaType(), v4Function, thisObject,
+ ctxt, scope, bindingTarget, index);
+ });
+}
+
+void QQmlCppBinding::createBindingForNonBindable(const QV4::ExecutableCompilationUnit *unit,
+ QObject *thisObject, qsizetype functionIndex,
+ QObject *bindingTarget, int metaPropertyIndex,
+ int valueTypePropertyIndex,
+ const QString &propertyName)
+{
+ Q_UNUSED(propertyName);
+
+ QV4::Function *v4Function = unit->runtimeFunctions.value(functionIndex, nullptr);
+ if (!v4Function) {
+ // TODO: align with existing logging of such
+ qCritical() << "invalid JavaScript function index (internal error)";
+ return;
+ }
+ if (metaPropertyIndex < 0) {
+ // TODO: align with existing logging of such
+ qCritical() << "invalid meta property index (internal error)";
+ return;
+ }
+
+ const QMetaObject *mo = bindingTarget->metaObject();
+ Q_ASSERT(mo);
+ QMetaProperty property = mo->property(metaPropertyIndex);
+ Q_ASSERT(valueTypePropertyIndex != -1 || QString::fromUtf8(property.name()) == propertyName);
+
+ createBindingInScope(
+ thisObject,
+ [&](const QQmlRefPointer<QQmlContextData> &ctxt, QV4::ExecutionContext *scope) -> void {
+ QQmlBinding *binding = QQmlBinding::create(property.metaType(), v4Function,
+ thisObject, ctxt, scope);
+ // almost as in qv4objectwrapper.cpp:535
+ Q_ASSERT(!property.isAlias()); // we convert aliases to (almost) real properties
+ binding->setTarget(bindingTarget, property.propertyIndex(), false,
+ valueTypePropertyIndex);
+ QQmlPropertyPrivate::setBinding(binding);
+ });
+}
+
+QT_END_NAMESPACE
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-23 14:25:08 +0000