59 lines
1.0 KiB
C
59 lines
1.0 KiB
C
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#ifndef FOREIGNCONTAINER_H
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#define FOREIGNCONTAINER_H
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template<class _OBJECT, typename _KEY>
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class ForeignContainer
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{
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_OBJECT *_object{nullptr};
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_KEY _key;
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enum StorageType {
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Key,
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ClassValue
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};
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StorageType storageType;
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public:
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ForeignContainer()
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{}
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ForeignContainer<_OBJECT, _KEY> operator =(const _KEY &key)
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{
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this->_key = key;
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this->_object = nullptr;
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this->storageType = Key;
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return *this;
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}
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ForeignContainer<_OBJECT, _KEY> operator =(const _OBJECT *value)
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{
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this->_object = value;
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this->storageType = ClassValue;
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return *this;
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}
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_KEY key()
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{
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if (this->storageType == Key)
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return _key;
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else
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return _object->primaryValue().template value<_KEY>();
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}
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_OBJECT *object()
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{
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return _object;
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}
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operator _KEY()
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{
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return key();
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}
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operator _OBJECT()
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{
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return object();
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}
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};
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#endif // FOREIGNCONTAINER_H
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