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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.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    16 ** GNU Lesser General Public License Usage

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

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    38 ** $QT_END_LICENSE$

    39 **

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

    41 

    42 #include "qanyuri_p.h"

    43 #include "qbuiltintypes_p.h"

    44 #include "qcommonvalues_p.h"

    45 #include "qpatternistlocale_p.h"

    46 #include "qnodenamespaceresolver_p.h"

    47 #include "qqnameconstructor_p.h"

    48 #include "qqnamevalue_p.h"

    49 #include "qatomicstring_p.h"

    50 #include "qxpathhelper_p.h"

    51 

    52 #include "qqnamefns_p.h"

    53 

    54 QT_BEGIN_NAMESPACE

    55 

    56 using namespace QPatternist;

    57 

    58 Item QNameFN::evaluateSingleton(const DynamicContext::Ptr &context) const

    59 {

    60     const Item paramURI(m_operands.first()->evaluateSingleton(context));

    61     const QString paramQName(m_operands.last()->evaluateSingleton(context).stringValue());

    62 

    63     QString ns;

    64     if(paramURI)

    65         ns = paramURI.stringValue();

    66 

    67     if(!XPathHelper::isQName(paramQName))

    68     {

    69         context->error(QtXmlPatterns::tr("%1 is an invalid %2").arg(formatData(paramQName),

    70                                                      formatType(context->namePool(), BuiltinTypes::xsQName)),

    71                        ReportContext::FOCA0002, this);

    72         return Item();

    73     }

    74 

    75     QString prefix;

    76     QString lname;

    77     XPathHelper::splitQName(paramQName, prefix, lname);

    78     const QXmlName n(context->namePool()->allocateQName(ns, lname, prefix));

    79 

    80     if(ns.isEmpty())

    81     {

    82         if(prefix.isEmpty())

    83             return toItem(QNameValue::fromValue(context->namePool(), n));

    84         else

    85         {

    86             context->error(QtXmlPatterns::tr(

    87                               "If the first argument is the empty sequence or "

    88                               "a zero-length string (no namespace), a prefix "

    89                               "cannot be specified. Prefix %1 was specified.")

    90                            .arg(formatKeyword(prefix)),

    91                            ReportContext::FOCA0002, this);

    92             return Item(); /* Silence compiler warning. */

    93         }

    94     }

    95     else

    96         return toItem(QNameValue::fromValue(context->namePool(), n));

    97 }

    98 

    99 Item ResolveQNameFN::evaluateSingleton(const DynamicContext::Ptr &context) const

   100 {

   101     const Item itemName(m_operands.first()->evaluateSingleton(context));

   102 

   103     if(!itemName)

   104         return Item();

   105 

   106     const NamespaceResolver::Ptr resolver(new NodeNamespaceResolver(m_operands.last()->evaluateSingleton(context)));

   107     const QString strName(itemName.stringValue());

   108     const QXmlName name = QNameConstructor::expandQName<DynamicContext::Ptr,

   109                                                      ReportContext::FOCA0002,

   110                                                      ReportContext::FONS0004>(strName,

   111                                                                               context,

   112                                                                               resolver,

   113                                                                               this);

   114 

   115     return toItem(QNameValue::fromValue(context->namePool(), name));

   116 }

   117 

   118 Item PrefixFromQNameFN::evaluateSingleton(const DynamicContext::Ptr &context) const

   119 {

   120     const QNameValue::Ptr arg(m_operands.first()->evaluateSingleton(context).as<QNameValue>());

   121     if(!arg)

   122         return Item();

   123 

   124     const QString prefix(context->namePool()->stringForPrefix(arg->qName().prefix()));

   125 

   126     if(prefix.isEmpty())

   127         return Item();

   128     else

   129         return AtomicString::fromValue(context->namePool()->stringForPrefix(arg->qName().prefix()));

   130 }

   131 

   132 Item LocalNameFromQNameFN::evaluateSingleton(const DynamicContext::Ptr &context) const

   133 {

   134     const QNameValue::Ptr arg(m_operands.first()->evaluateSingleton(context).as<QNameValue>());

   135     return arg ? toItem(AtomicString::fromValue(context->namePool()->stringForLocalName(arg->qName().localName()))) : Item();

   136 }

   137 

   138 Item NamespaceURIFromQNameFN::evaluateSingleton(const DynamicContext::Ptr &context) const

   139 {

   140     const QNameValue::Ptr arg(m_operands.first()->evaluateSingleton(context).as<QNameValue>());

   141     return arg ? toItem(AnyURI::fromValue(context->namePool()->stringForNamespace(arg->qName().namespaceURI()))) : Item();

   142 }

   143 

   144 Item NamespaceURIForPrefixFN::evaluateSingleton(const DynamicContext::Ptr &context) const

   145 {

   146     const Item prefixItem(m_operands.first()->evaluateSingleton(context));

   147     QXmlName::PrefixCode prefix;

   148 

   149     if(prefixItem)

   150         prefix = context->namePool()->allocatePrefix(prefixItem.stringValue());

   151     else

   152         prefix = StandardPrefixes::empty;

   153 

   154     const Item eleItem(m_operands.last()->evaluateSingleton(context));

   155     Q_ASSERT(eleItem);

   156 

   157     const QXmlName::NamespaceCode ns = eleItem.asNode().namespaceForPrefix(prefix);

   158 

   159     if(ns == NamespaceResolver::NoBinding)

   160     {

   161         /* This is a bit tricky. The default namespace is not considered an in-scope binding

   162          * on a node, but the specification for this function do consider it a binding and therefore

   163          * the empty string. */

   164         if(prefix == StandardPrefixes::empty)

   165             return CommonValues::EmptyString;

   166         else

   167             return Item();

   168     }

   169     else

   170         return toItem(AnyURI::fromValue(context->namePool()->stringForNamespace(ns)));

   171 }

   172 

   173 Item::Iterator::Ptr InScopePrefixesFN::evaluateSequence(const DynamicContext::Ptr &context) const

   174 {

   175     const Item e(m_operands.first()->evaluateSingleton(context));

   176 

   177     const QVector<QXmlName> nbs(e.asNode().namespaceBindings());

   178     const int len = nbs.size();

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

   180 

   181     QList<Item> result;

   182 

   183     for(int i = 0; i < len; ++i)

   184         result.append(AtomicString::fromValue(np->stringForPrefix(nbs.at(i).prefix())));

   185 

   186     return makeListIterator(result);

   187 }

   188 

   189 QT_END_NAMESPACE