Long live Qt 4.5!

1 files changed, 160 insertions, 0 deletions

diff --git a/src/xmlpatterns/expr/qelementconstructor.cpp b/src/xmlpatterns/expr/qelementconstructor.cpp
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+++ b/src/xmlpatterns/expr/qelementconstructor.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtXmlPatterns module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcommonsequencetypes_p.h"
+#include "qdelegatingnamespaceresolver_p.h"
+#include "qnamespaceconstructor_p.h"
+#include "qnodebuilder_p.h"
+#include "qoutputvalidator_p.h"
+#include "qqnamevalue_p.h"
+#include "qstaticnamespacecontext_p.h"
+
+#include "qelementconstructor_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+ElementConstructor::ElementConstructor(const Expression::Ptr &op1,
+                                       const Expression::Ptr &op2,
+                                       const bool isXSLT) : PairContainer(op1, op2)
+                                                          , m_isXSLT(isXSLT)
+{
+}
+
+Item ElementConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    const Item name(m_operand1->evaluateSingleton(context));
+
+    const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(m_staticBaseURI));
+    OutputValidator validator(nodeBuilder.data(), context, this, m_isXSLT);
+
+    const DynamicContext::Ptr receiverContext(context->createReceiverContext(&validator));
+
+    nodeBuilder->startElement(name.as<QNameValue>()->qName());
+    m_operand2->evaluateToSequenceReceiver(receiverContext);
+    nodeBuilder->endElement();
+
+    const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument());
+    context->addNodeModel(nm);
+
+    return nm->root(QXmlNodeModelIndex());
+}
+
+void ElementConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const
+{
+    /* We create an OutputValidator here too. If we're serializing(a common
+     * case, unfortunately) the receiver is already validating in order to
+     * catch cases where a computed attribute constructor is followed by an
+     * element constructor, but in the cases where we're not serializing it's
+     * necessary that we validate in this step. */
+    const Item name(m_operand1->evaluateSingleton(context));
+    QAbstractXmlReceiver *const receiver = context->outputReceiver();
+
+    OutputValidator validator(receiver, context, this, m_isXSLT);
+    const DynamicContext::Ptr receiverContext(context->createReceiverContext(&validator));
+
+    receiver->startElement(name.as<QNameValue>()->qName());
+    m_operand2->evaluateToSequenceReceiver(receiverContext);
+    receiver->endElement();
+}
+
+Expression::Ptr ElementConstructor::typeCheck(const StaticContext::Ptr &context,
+                                              const SequenceType::Ptr &reqType)
+{
+    /* What does this code do? When type checking our children, our namespace
+     * bindings, which are also children of the form of NamespaceConstructor
+     * instances, must be statically in-scope for them, so find them and
+     * shuffle their bindings into the StaticContext. */
+
+    m_staticBaseURI = context->baseURI();
+
+    /* Namespace declarations changes the in-scope bindings, so let's
+     * first lookup our child NamespaceConstructors. */
+    const ID operandID = m_operand2->id();
+
+    NamespaceResolver::Bindings overrides;
+    if(operandID == IDExpressionSequence)
+    {
+        const Expression::List operands(m_operand2->operands());
+        const int len = operands.count();
+
+        for(int i = 0; i < len; ++i)
+        {
+            if(operands.at(i)->is(IDNamespaceConstructor))
+            {
+                const QXmlName &nb = operands.at(i)->as<NamespaceConstructor>()->namespaceBinding();
+                overrides.insert(nb.prefix(), nb.namespaceURI());
+            }
+        }
+    }
+
+    const NamespaceResolver::Ptr newResolver(new DelegatingNamespaceResolver(context->namespaceBindings(), overrides));
+    const StaticContext::Ptr augmented(new StaticNamespaceContext(newResolver, context));
+
+    return PairContainer::typeCheck(augmented, reqType);
+}
+
+SequenceType::Ptr ElementConstructor::staticType() const
+{
+    return CommonSequenceTypes::ExactlyOneElement;
+}
+
+SequenceType::List ElementConstructor::expectedOperandTypes() const
+{
+    SequenceType::List result;
+    result.append(CommonSequenceTypes::ExactlyOneQName);
+    result.append(CommonSequenceTypes::ZeroOrMoreItems);
+    return result;
+}
+
+Expression::Properties ElementConstructor::properties() const
+{
+    return DisableElimination | IsNodeConstructor;
+}
+
+ExpressionVisitorResult::Ptr
+ElementConstructor::accept(const ExpressionVisitor::Ptr &visitor) const
+{
+    return visitor->visit(this);
+}
+
+QT_END_NAMESPACE