src/xmlpatterns/data/qvaluefactory.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
       
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     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
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     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
       
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    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "qatomiccaster_p.h"
       
    43 #include "qatomicstring_p.h"
       
    44 #include "qcastingplatform_p.h"
       
    45 #include "qvaluefactory_p.h"
       
    46 
       
    47 QT_BEGIN_NAMESPACE
       
    48 
       
    49 using namespace QPatternist;
       
    50 
       
    51 /**
       
    52  * @short Helper class for ValueFactory::fromLexical() which exposes
       
    53  * CastingPlatform appropriately.
       
    54  *
       
    55  * @relates ValueFactory
       
    56  */
       
    57 class PerformValueConstruction : public CastingPlatform<PerformValueConstruction, false>
       
    58                                , public SourceLocationReflection
       
    59 {
       
    60 public:
       
    61     PerformValueConstruction(const SourceLocationReflection *const sourceLocationReflection,
       
    62                              const SchemaType::Ptr &toType) : m_sourceReflection(sourceLocationReflection)
       
    63                                                             , m_targetType(AtomicType::Ptr(toType))
       
    64     {
       
    65         Q_ASSERT(m_sourceReflection);
       
    66     }
       
    67 
       
    68     AtomicValue::Ptr operator()(const AtomicValue::Ptr &lexicalValue,
       
    69                                 const SchemaType::Ptr & /*type*/,
       
    70                                 const ReportContext::Ptr &context)
       
    71     {
       
    72         prepareCasting(context, BuiltinTypes::xsString);
       
    73         return AtomicValue::Ptr(const_cast<AtomicValue *>(cast(lexicalValue, context).asAtomicValue()));
       
    74     }
       
    75 
       
    76     const SourceLocationReflection *actualReflection() const
       
    77     {
       
    78         return m_sourceReflection;
       
    79     }
       
    80 
       
    81     ItemType::Ptr targetType() const
       
    82     {
       
    83         return m_targetType;
       
    84     }
       
    85 
       
    86 private:
       
    87     const SourceLocationReflection *const m_sourceReflection;
       
    88     const ItemType::Ptr                   m_targetType;
       
    89 };
       
    90 
       
    91 AtomicValue::Ptr ValueFactory::fromLexical(const QString &lexicalValue,
       
    92                                            const SchemaType::Ptr &type,
       
    93                                            const ReportContext::Ptr &context,
       
    94                                            const SourceLocationReflection *const sourceLocationReflection)
       
    95 {
       
    96     Q_ASSERT(context);
       
    97     Q_ASSERT(type);
       
    98     Q_ASSERT_X(type->category() == SchemaType::SimpleTypeAtomic, Q_FUNC_INFO,
       
    99                "We can only construct for atomic values.");
       
   100 
       
   101     return PerformValueConstruction(sourceLocationReflection, type)(AtomicString::fromValue(lexicalValue),
       
   102                                                                     type,
       
   103                                                                     context);
       
   104 }
       
   105 
       
   106 QT_END_NAMESPACE