author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 02 Sep 2010 21:20:32 +0300 (2010-09-02) | |
changeset 34 | a33bf25e6f72 |
parent 18 | 2f34d5167611 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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2f34d5167611
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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changeset
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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#include "qcommonsequencetypes_p.h" |
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#include "qdelegatingnamespaceresolver_p.h" |
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#include "qnamespaceconstructor_p.h" |
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#include "qnodebuilder_p.h" |
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#include "qoutputvalidator_p.h" |
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#include "qqnamevalue_p.h" |
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#include "qstaticnamespacecontext_p.h" |
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#include "qelementconstructor_p.h" |
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QT_BEGIN_NAMESPACE |
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using namespace QPatternist; |
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ElementConstructor::ElementConstructor(const Expression::Ptr &op1, |
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const Expression::Ptr &op2, |
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const bool isXSLT) : PairContainer(op1, op2) |
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, m_isXSLT(isXSLT) |
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{ |
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} |
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Item ElementConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const |
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{ |
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const Item name(m_operand1->evaluateSingleton(context)); |
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const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(m_staticBaseURI)); |
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OutputValidator validator(nodeBuilder.data(), context, this, m_isXSLT); |
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const DynamicContext::Ptr receiverContext(context->createReceiverContext(&validator)); |
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nodeBuilder->startElement(name.as<QNameValue>()->qName()); |
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m_operand2->evaluateToSequenceReceiver(receiverContext); |
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nodeBuilder->endElement(); |
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const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument()); |
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context->addNodeModel(nm); |
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return nm->root(QXmlNodeModelIndex()); |
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} |
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void ElementConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const |
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{ |
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/* We create an OutputValidator here too. If we're serializing(a common |
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* case, unfortunately) the receiver is already validating in order to |
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* catch cases where a computed attribute constructor is followed by an |
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* element constructor, but in the cases where we're not serializing it's |
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* necessary that we validate in this step. */ |
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const Item name(m_operand1->evaluateSingleton(context)); |
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QAbstractXmlReceiver *const receiver = context->outputReceiver(); |
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OutputValidator validator(receiver, context, this, m_isXSLT); |
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const DynamicContext::Ptr receiverContext(context->createReceiverContext(&validator)); |
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receiver->startElement(name.as<QNameValue>()->qName()); |
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m_operand2->evaluateToSequenceReceiver(receiverContext); |
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receiver->endElement(); |
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} |
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Expression::Ptr ElementConstructor::typeCheck(const StaticContext::Ptr &context, |
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const SequenceType::Ptr &reqType) |
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{ |
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/* What does this code do? When type checking our children, our namespace |
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* bindings, which are also children of the form of NamespaceConstructor |
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* instances, must be statically in-scope for them, so find them and |
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* shuffle their bindings into the StaticContext. */ |
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m_staticBaseURI = context->baseURI(); |
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/* Namespace declarations changes the in-scope bindings, so let's |
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* first lookup our child NamespaceConstructors. */ |
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const ID operandID = m_operand2->id(); |
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NamespaceResolver::Bindings overrides; |
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if(operandID == IDExpressionSequence) |
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{ |
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const Expression::List operands(m_operand2->operands()); |
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const int len = operands.count(); |
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for(int i = 0; i < len; ++i) |
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{ |
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if(operands.at(i)->is(IDNamespaceConstructor)) |
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{ |
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const QXmlName &nb = operands.at(i)->as<NamespaceConstructor>()->namespaceBinding(); |
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overrides.insert(nb.prefix(), nb.namespaceURI()); |
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} |
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} |
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} |
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const NamespaceResolver::Ptr newResolver(new DelegatingNamespaceResolver(context->namespaceBindings(), overrides)); |
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const StaticContext::Ptr augmented(new StaticNamespaceContext(newResolver, context)); |
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return PairContainer::typeCheck(augmented, reqType); |
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} |
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SequenceType::Ptr ElementConstructor::staticType() const |
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{ |
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return CommonSequenceTypes::ExactlyOneElement; |
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} |
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SequenceType::List ElementConstructor::expectedOperandTypes() const |
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{ |
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SequenceType::List result; |
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result.append(CommonSequenceTypes::ExactlyOneQName); |
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result.append(CommonSequenceTypes::ZeroOrMoreItems); |
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return result; |
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} |
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Expression::Properties ElementConstructor::properties() const |
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{ |
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return DisableElimination | IsNodeConstructor; |
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} |
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ExpressionVisitorResult::Ptr |
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ElementConstructor::accept(const ExpressionVisitor::Ptr &visitor) const |
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{ |
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return visitor->visit(this); |
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} |
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QT_END_NAMESPACE |