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47 lines
775 B
C
47 lines
775 B
C
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/*
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* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef OBJECT_ID_H
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#define OBJECT_ID_H
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#include <Referenceable.h>
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class ObjectID : public Referenceable {
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public:
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ObjectID();
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virtual ~ObjectID();
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inline uint32 HashValue() const;
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virtual bool operator==(const ObjectID& other) const = 0;
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inline bool operator!=(const ObjectID& other) const;
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protected:
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virtual uint32 ComputeHashValue() const = 0;
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protected:
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mutable uint32 fHashValue;
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};
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uint32
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ObjectID::HashValue() const
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{
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if (fHashValue == 0)
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fHashValue = ComputeHashValue();
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return fHashValue;
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}
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bool
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ObjectID::operator!=(const ObjectID& other) const
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{
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return !(*this == other);
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}
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#endif // OBJECT_ID_H
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