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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <QUrl>

    43 

    44 #include "qcommonsequencetypes_p.h"

    45 #include "qnodebuilder_p.h"

    46 #include "qqnamevalue_p.h"

    47 

    48 #include "qattributeconstructor_p.h"

    49 

    50 QT_BEGIN_NAMESPACE

    51 

    52 using namespace QPatternist;

    53 

    54 AttributeConstructor::AttributeConstructor(const Expression::Ptr &op1,

    55                                            const Expression::Ptr &op2) : PairContainer(op1, op2)

    56 {

    57 }

    58 

    59 QString AttributeConstructor::processValue(const QXmlName name,

    60                                            const Item &value)

    61 {

    62     if(!value)

    63         return QString();

    64     else if(name == QXmlName(StandardNamespaces::xml, StandardLocalNames::id))

    65         return value.stringValue().simplified();

    66     else

    67         return value.stringValue();

    68 }

    69 

    70 Item AttributeConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const

    71 {

    72     const Item nameItem(m_operand1->evaluateSingleton(context));

    73     const Item content(m_operand2->evaluateSingleton(context));

    74 

    75     const QXmlName name(nameItem.as<QNameValue>()->qName());

    76     const QString value(processValue(name, content));

    77     const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(QUrl()));

    78 

    79     nodeBuilder->attribute(name, QStringRef(&value));

    80 

    81     const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument());

    82     context->addNodeModel(nm);

    83     return nm->root(QXmlNodeModelIndex());

    84 }

    85 

    86 void AttributeConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const

    87 {

    88     QAbstractXmlReceiver *const receiver = context->outputReceiver();

    89     const Item nameItem(m_operand1->evaluateSingleton(context));

    90 

    91     const Item content(m_operand2->evaluateSingleton(context));

    92     const QXmlName name(nameItem.as<QNameValue>()->qName());

    93     const QString value(processValue(name, content));

    94 

    95     receiver->attribute(name, QStringRef(&value));

    96 }

    97 

    98 SequenceType::Ptr AttributeConstructor::staticType() const

    99 {

   100     return CommonSequenceTypes::ExactlyOneAttribute;

   101 }

   102 

   103 SequenceType::List AttributeConstructor::expectedOperandTypes() const

   104 {

   105     SequenceType::List result;

   106     result.append(CommonSequenceTypes::ExactlyOneQName);

   107     result.append(CommonSequenceTypes::ZeroOrMoreItems);

   108     return result;

   109 }

   110 

   111 Expression::Properties AttributeConstructor::properties() const

   112 {

   113     return DisableElimination | IsNodeConstructor;

   114 }

   115 

   116 ExpressionVisitorResult::Ptr

   117 AttributeConstructor::accept(const ExpressionVisitor::Ptr &visitor) const

   118 {

   119     return visitor->visit(this);

   120 }

   121 

   122 Expression::ID AttributeConstructor::id() const

   123 {

   124     return IDAttributeConstructor;

   125 }

   126 

   127 QT_END_NAMESPACE