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39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49
50#ifndef Patternist_AtomicCaster_H
51#define Patternist_AtomicCaster_H
52
53#include <private/qdynamiccontext_p.h>
54#include <private/qitem_p.h>
55#include <private/qatomictypedispatch_p.h>
56
57QT_BEGIN_NAMESPACE
58
59namespace QPatternist
60{
61 /**
62 * @short AtomicCaster is an abstract base class for classes
63 * that performs casting between two atomic values of specific types.
64 *
65 * @ingroup Patternist_xdm
66 * @author Frans Englich <frans.englich@nokia.com>
67 */
68 class AtomicCaster : public AtomicTypeVisitorResult
69 {
70 public:
71 typedef QExplicitlySharedDataPointer<AtomicCaster> Ptr;
72 AtomicCaster();
73 virtual ~AtomicCaster();
74
75 /**
76 * Casts @p from to an atomic value of the type this class
77 * casts to, and returns that value. The @p context is used
78 * for reporting errors in case the casting fails, and to in general
79 * access information from the dynamic context.
80 */
81 virtual Item castFrom(const Item &from,
82 const QExplicitlySharedDataPointer<DynamicContext> &context) const = 0;
83 };
84}
85
86QT_END_NAMESPACE
87
88#endif
89

source code of qtxmlpatterns/src/xmlpatterns/data/qatomiccaster_p.h