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     2 **

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

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

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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

    41 

    42 #include "qcommonsequencetypes_p.h"

    43 #include "qpatternistlocale_p.h"

    44 #include "qnodebuilder_p.h"

    45 

    46 #include "qcommentconstructor_p.h"

    47 

    48 QT_BEGIN_NAMESPACE

    49 

    50 using namespace QPatternist;

    51 

    52 CommentConstructor::CommentConstructor(const Expression::Ptr &op) : SingleContainer(op)

    53 {

    54 }

    55 

    56 QString CommentConstructor::evaluateContent(const DynamicContext::Ptr &context) const

    57 {

    58     const Item item(m_operand->evaluateSingleton(context));

    59 

    60     if(!item)

    61         return QString();

    62 

    63     const QString content(item.stringValue());

    64 

    65     if(content.contains(QLatin1String("--")))

    66     {

    67         context->error(QtXmlPatterns::tr("A comment cannot contain %1")

    68                        .arg(formatData("--")),

    69                        ReportContext::XQDY0072, this);

    70     }

    71     else if(content.endsWith(QLatin1Char('-')))

    72     {

    73         context->error(QtXmlPatterns::tr("A comment cannot end with a %1.")

    74                        .arg(formatData(QLatin1Char('-'))),

    75                        ReportContext::XQDY0072, this);

    76     }

    77 

    78     return content;

    79 }

    80 

    81 Item CommentConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const

    82 {

    83     const QString content(evaluateContent(context));

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

    85     nodeBuilder->comment(content);

    86 

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

    88     context->addNodeModel(nm);

    89 

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

    91 }

    92 

    93 void CommentConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const

    94 {

    95     const QString content(evaluateContent(context));

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

    97 

    98     receiver->comment(content);

    99 }

   100 

   101 SequenceType::Ptr CommentConstructor::staticType() const

   102 {

   103     return CommonSequenceTypes::ExactlyOneComment;

   104 }

   105 

   106 SequenceType::List CommentConstructor::expectedOperandTypes() const

   107 {

   108     SequenceType::List result;

   109     result.append(CommonSequenceTypes::ZeroOrOneString);

   110     return result;

   111 }

   112 

   113 Expression::Properties CommentConstructor::properties() const

   114 {

   115     return DisableElimination | IsNodeConstructor;

   116 }

   117 

   118 ExpressionVisitorResult::Ptr

   119 CommentConstructor::accept(const ExpressionVisitor::Ptr &visitor) const

   120 {

   121     return visitor->visit(this);

   122 }

   123 

   124 QT_END_NAMESPACE