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     2 **

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

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

     6 **

     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 "qanyuri_p.h"

    43 #include "qbuiltintypes_p.h"

    44 #include "qcommonsequencetypes_p.h"

    45 #include "qpatternistlocale_p.h"

    46 #include "private/qxmlutils_p.h"

    47 

    48 #include "qcomputednamespaceconstructor_p.h"

    49 

    50 QT_BEGIN_NAMESPACE

    51 

    52 using namespace QPatternist;

    53 

    54 ComputedNamespaceConstructor::ComputedNamespaceConstructor(const Expression::Ptr &prefix,

    55                                                            const Expression::Ptr &namespaceURI) : PairContainer(prefix, namespaceURI)

    56 {

    57 }

    58 

    59 void ComputedNamespaceConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const

    60 {

    61     const Item prefixItem(m_operand1->evaluateSingleton(context));

    62     const QString prefix(prefixItem ? prefixItem.stringValue() : QString());

    63 

    64     const Item namespaceItem(m_operand2->evaluateSingleton(context));

    65     const QString namespaceURI(namespaceItem ? namespaceItem.stringValue() : QString());

    66 

    67     if(namespaceURI.isEmpty())

    68     {

    69         context->error(QtXmlPatterns::tr("In a namespace constructor, the value for a namespace cannot be an empty string."),

    70                        ReportContext::XTDE0930,

    71                        this);

    72     }

    73 

    74     /* One optimization could be to store a pointer to

    75      * the name pool as a member in order to avoid the virtual call(s). */

    76     const NamePool::Ptr np(context->namePool());

    77 

    78     if(!prefix.isEmpty() && !QXmlUtils::isNCName(prefix))

    79     {

    80         context->error(QtXmlPatterns::tr("The prefix must be a valid %1, which %2 is not.")

    81                                         .arg(formatType(np, BuiltinTypes::xsNCName),

    82                                              formatKeyword(prefix)),

    83                        ReportContext::XTDE0920,

    84                        this);

    85     }

    86     const QXmlName binding(np->allocateBinding(prefix, namespaceURI));

    87 

    88     AnyURI::toQUrl<ReportContext::XTDE0905, DynamicContext::Ptr>(namespaceURI,

    89                                                                  context,

    90                                                                  this);

    91 

    92     if(binding.prefix() == StandardPrefixes::xmlns)

    93     {

    94         context->error(QtXmlPatterns::tr("The prefix %1 cannot be bound.")

    95                                         .arg(formatKeyword(prefix)),

    96                        ReportContext::XTDE0920,

    97                        this);

    98     }

    99 

   100     if((binding.prefix() == StandardPrefixes::xml && binding.namespaceURI() != StandardNamespaces::xml)

   101        ||

   102        (binding.prefix() != StandardPrefixes::xml && binding.namespaceURI() == StandardNamespaces::xml))

   103     {

   104         context->error(QtXmlPatterns::tr("Only the prefix %1 can be bound to %2 and vice versa.")

   105                                         .arg(formatKeyword(prefix), formatKeyword(namespaceURI)),

   106                        ReportContext::XTDE0925,

   107                        this);

   108     }

   109 

   110      context->outputReceiver()->namespaceBinding(binding);

   111 }

   112 

   113 SequenceType::Ptr ComputedNamespaceConstructor::staticType() const

   114 {

   115     return CommonSequenceTypes::ExactlyOneAttribute;

   116 }

   117 

   118 SequenceType::List ComputedNamespaceConstructor::expectedOperandTypes() const

   119 {

   120     SequenceType::List result;

   121     result.append(CommonSequenceTypes::ZeroOrOneString);

   122     result.append(CommonSequenceTypes::ZeroOrOneString);

   123     return result;

   124 }

   125 

   126 Expression::Properties ComputedNamespaceConstructor::properties() const

   127 {

   128     return DisableElimination | IsNodeConstructor;

   129 }

   130 

   131 ExpressionVisitorResult::Ptr ComputedNamespaceConstructor::accept(const ExpressionVisitor::Ptr &visitor) const

   132 {

   133     return visitor->visit(this);

   134 }

   135 

   136 QT_END_NAMESPACE