src/xmlpatterns/data/qvaluefactory.cpp

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  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