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41 
42 //
43 //  W A R N I N G
44 //  -------------
45 //
46 // This file is not part of the Qt API.  It exists purely as an
47 // implementation detail.  This header file may change from version to
48 // version without notice, or even be removed.
49 //
50 // We mean it.
51 
52 #ifndef Patternist_XsdIdCache_H
53 #define Patternist_XsdIdCache_H
54 
55 #include "qschemacomponent_p.h"
56 
57 #include <QtCore/QExplicitlySharedDataPointer>
58 #include <QtCore/QReadWriteLock>
59 #include <QtCore/QSet>
60 #include <QtCore/QString>
61 
62 QT_BEGIN_HEADER
63 
64 QT_BEGIN_NAMESPACE
65 
66 namespace QPatternist
67 {
68     /**
69      * @short Helper class for keeping track of all existing IDs in a schema.
70      *
71      * @ingroup Patternist_schema
72      * @author Tobias Koenig <tobias.koenig@nokia.com>
73      */
74     class XsdIdCache : public QSharedData
75     {
76         public:
77             typedef QExplicitlySharedDataPointer<XsdIdCache> Ptr;
78 
79             /**
80              * Adds an @p id to the id cache.
81              */
82             void addId(const QString &id);
83 
84             /**
85              * Returns whether the id cache contains the given @p id already.
86              */
87             bool hasId(const QString &id) const;
88 
89         private:
90             QSet<QString>          m_ids;
91             mutable QReadWriteLock m_lock;
92     };
93 }
94 
95 QT_END_NAMESPACE
96 
97 QT_END_HEADER
98 
99 #endif
100