73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
/*
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* ValueLazyFast.hpp
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*
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* Created on: 29 íîÿá. 2018 ã.
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* Author: titov
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*/
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#ifndef SOURCE_SYSTEMIC_VALUELAZYFAST_HPP_
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#define SOURCE_SYSTEMIC_VALUELAZYFAST_HPP_
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#include "IValue.hpp"
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#include "IValueOverride.hpp"
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namespace systemic { namespace detail {
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template<typename V, typename T, V (T::* pf)() const>
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class ValueLazyFast : public IValue<V> {
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private:
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const T & object;
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public:
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ValueLazyFast( const T & obj );
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operator V() const final;
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ValueLazyFast(const ValueLazyFast &) = delete;
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ValueLazyFast & operator=(const ValueLazyFast &) = delete;
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IValue<V> * getValue();
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IValueOverride<V> * getValueOverride();
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volatile const V * getBase();
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~ValueLazyFast() = default;
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};
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}
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}
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template<typename V, typename T, V (T::*pf)() const>
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inline systemic::detail::ValueLazyFast<V, T, pf>::ValueLazyFast( const T & obj ) :
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object(obj) {}
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template<typename V, typename T, V (T::*pf)() const>
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inline systemic::detail::ValueLazyFast<V, T, pf>::operator V() const {
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return (object.*pf)();
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}
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template<typename V, typename T, V (T::*pf)() const>
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inline systemic::IValue<V> * systemic::detail::ValueLazyFast<V, T, pf>::getValue() {
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return this;
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}
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template<typename V, typename T, V (T::*pf)() const>
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inline systemic::IValueOverride<V> * systemic::detail::ValueLazyFast<V, T, pf>::getValueOverride() {
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return nullptr;
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}
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template<typename V, typename T, V (T::*pf)() const>
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inline const volatile V * systemic::detail::ValueLazyFast<V, T, pf>::getBase() {
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return nullptr;
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}
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#endif /* SOURCE_SYSTEMIC_VALUELAZYFAST_HPP_ */
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