1 /****************************************************************************

     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

    11 ** This file contains pre-release code and may not be distributed.

    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

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

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

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

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    36 **

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    38 ** $QT_END_LICENSE$

    39 **

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

    41 

    42 #include "qanyuri_p.h"

    43 #include "qboolean_p.h"

    44 #include "qbuiltintypes_p.h"

    45 #include "qcommonvalues_p.h"

    46 #include "qliteral_p.h"

    47 #include "qitem_p.h"

    48 #include "qqnamevalue_p.h"

    49 #include "qatomicstring_p.h"

    50 

    51 #include "qaccessorfns_p.h"

    52 

    53 QT_BEGIN_NAMESPACE

    54 

    55 using namespace QPatternist;

    56 

    57 Item NodeNameFN::evaluateSingleton(const DynamicContext::Ptr &context) const

    58 {

    59     const Item item(m_operands.first()->evaluateSingleton(context));

    60 

    61     if(item)

    62     {

    63         const QXmlName name(item.asNode().name());

    64 

    65         if(name.isNull())

    66             return Item();

    67         else

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

    69     }

    70     else

    71         return Item();

    72 }

    73 

    74 Item NilledFN::evaluateSingleton(const DynamicContext::Ptr &context) const

    75 {

    76     const Item item(m_operands.first()->evaluateSingleton(context));

    77 

    78     if(item && item.asNode().kind() == QXmlNodeModelIndex::Element)

    79     {

    80         /* We have no access to the PSVI -- always return false. */

    81         return CommonValues::BooleanFalse;

    82     }

    83     else

    84         return Item();

    85 }

    86 

    87 Item StringFN::evaluateSingleton(const DynamicContext::Ptr &context) const

    88 {

    89     const Item item(m_operands.first()->evaluateSingleton(context));

    90 

    91     if(item)

    92         return AtomicString::fromValue(item.stringValue());

    93     else

    94         return CommonValues::EmptyString;

    95 }

    96 

    97 Expression::Ptr StringFN::typeCheck(const StaticContext::Ptr &context,

    98                                     const SequenceType::Ptr &reqType)

    99 {

   100     const Expression::Ptr me(FunctionCall::typeCheck(context, reqType));

   101     if(me != this)

   102         return me;

   103 

   104     if(BuiltinTypes::xsString->xdtTypeMatches(m_operands.first()->staticType()->itemType()))

   105         return m_operands.first(); /* No need for string(), it's already a string. */

   106     else

   107         return me;

   108 }

   109 

   110 Item BaseURIFN::evaluateSingleton(const DynamicContext::Ptr &context) const

   111 {

   112     const Item node(m_operands.first()->evaluateSingleton(context));

   113 

   114     if(node)

   115     {

   116         const QUrl base(node.asNode().baseUri());

   117 

   118         if(base.isEmpty())

   119             return Item();

   120         else if(base.isValid())

   121         {

   122             Q_ASSERT_X(!base.isRelative(), Q_FUNC_INFO,

   123                        "The base URI must be absolute.");

   124             return toItem(AnyURI::fromValue(base));

   125         }

   126         else

   127             return Item();

   128     }

   129     else

   130         return Item();

   131 }

   132 

   133 Item DocumentURIFN::evaluateSingleton(const DynamicContext::Ptr &context) const

   134 {

   135     const Item node(m_operands.first()->evaluateSingleton(context));

   136 

   137     if(node)

   138     {

   139         const QUrl documentURI(node.asNode().documentUri());

   140 

   141         if(documentURI.isValid())

   142         {

   143             if(documentURI.isEmpty())

   144                 return Item();

   145             else

   146             {

   147                 Q_ASSERT_X(!documentURI.isRelative(), Q_FUNC_INFO,

   148                            "The document URI must be absolute.");

   149                 return toItem(AnyURI::fromValue(documentURI));

   150             }

   151         }

   152         else

   153             return Item();

   154     }

   155     else

   156         return Item();

   157 }

   158 

   159 QT_END_NAMESPACE