86 lines
2.4 KiB
C++
Vendored
86 lines
2.4 KiB
C++
Vendored
/* Zeta API - Z/classes/MemberFunction.hpp
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______ ______________ ___
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|__ / | ___|___ ___|/ \
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/ /__| __| | | / - \
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/______|_____| |__| /__/ \__\
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Copyright (C) 2006-2024 Manuel Sainz de Baranda y Goñi.
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Released under the terms of the GNU Lesser General Public License v3. */
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#ifndef Z_classes_MemberFunction_HPP
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#define Z_classes_MemberFunction_HPP
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#include <Z/inspection/language.h>
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#if Z_DIALECT_HAS(CPP98, SFINAE) && \
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Z_DIALECT_HAS(CPP11, VARIADIC_TEMPLATE) && \
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Z_DIALECT_HAS(CPP11, DEFAULT_TEMPLATE_ARGUMENTS_FOR_FUNCTION_TEMPLATE)
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# define Z_HAS_MemberFunction 1
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# include <Z/constants/pointer.h>
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# include <Z/traits/type.hpp>
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namespace Zeta {
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template <class f> struct MemberFunction;
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template <class r, class... p> struct MemberFunction<r(p...)> {
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r (NaT::* function)(p...);
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Z_INLINE MemberFunction() Z_NOTHROW
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Z_DEFAULTED({})
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# ifdef Z_NULLPTR
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Z_CT(CPP11) MemberFunction(NullPtr) Z_NOTHROW
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: function(nullptr) {};
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# endif
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template <class m, class e = typename TypeIf<
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Type<m>::is_member_function_pointer &&
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TypeIsSame<typename Type<m>::flow::to_function::end::to_unqualified, r(p...)>::value
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>::type>
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Z_INLINE MemberFunction(m function) Z_NOTHROW
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: function(reinterpret_cast<r (NaT::*)(p...)>(function)) {}
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Z_CT(CPP11) operator Boolean() const Z_NOTHROW
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{return function != Z_NULL;}
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template <class m, class e = typename TypeIf<
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Type<m>::is_member_function_pointer &&
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TypeIsSame<typename Type<m>::flow::to_function::end::to_unqualified, r(p...)>::value
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>::type>
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Z_INLINE operator m() const Z_NOTHROW
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{return reinterpret_cast<m>(function);}
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template <class m>
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Z_INLINE typename TypeIf<
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Type<m>::is_member_function_pointer &&
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TypeIsSame<typename Type<m>::flow::to_function::end::to_unqualified, r(p...)>::value,
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MemberFunction &>::type
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operator =(m rhs) Z_NOTHROW
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{
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function = reinterpret_cast<r (NaT::*)(p...)>(rhs);
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return *this;
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}
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template <class o>
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Z_INLINE r operator ()(o *object, typename Type<p>::to_forwardable... arguments) const
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{return (reinterpret_cast<NaT *>(object)->*function)(arguments...);}
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template <class o>
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Z_INLINE r operator ()(const o &object, typename Type<p>::to_forwardable... arguments) const
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{return (const_cast<NaT *>(reinterpret_cast<const NaT *>(&object))->*function)(arguments...);}
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};
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}
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#endif
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#endif // Z_classes_MemberFunction_HPP
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