mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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62 lines
2 KiB
C++
62 lines
2 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2014 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_FUNCTIONAL_PTR_FUN_HPP
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#define SPROUT_FUNCTIONAL_PTR_FUN_HPP
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#include <sprout/config.hpp>
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#include <sprout/functional/base.hpp>
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namespace sprout {
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// D.8.2.1 adaptors (deprecated)
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template<typename Arg, typename Result>
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class pointer_to_unary_function
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: public sprout::unary_function<Arg, Result>
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{
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protected:
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Result (*ptr_)(Arg);
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public:
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SPROUT_CONSTEXPR pointer_to_unary_function() SPROUT_DEFAULTED_DEFAULT_CONSTRUCTOR_DECL
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explicit SPROUT_CONSTEXPR pointer_to_unary_function(Result (*x)(Arg))
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: ptr_(x)
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{}
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SPROUT_CONSTEXPR Result operator()(Arg x) const {
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return ptr_(x);
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}
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};
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template<typename Arg, typename Result>
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inline SPROUT_CONSTEXPR sprout::pointer_to_unary_function<Arg, Result>
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ptr_fun(Result (*x)(Arg)) {
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return sprout::pointer_to_unary_function<Arg, Result>(x);
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}
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template<typename Arg1, typename Arg2, typename Result>
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class pointer_to_binary_function
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: public sprout::binary_function<Arg1, Arg2, Result>
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{
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protected:
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Result (*ptr_)(Arg1, Arg2);
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public:
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SPROUT_CONSTEXPR pointer_to_binary_function() SPROUT_DEFAULTED_DEFAULT_CONSTRUCTOR_DECL
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explicit SPROUT_CONSTEXPR pointer_to_binary_function(Result (*x)(Arg1, Arg2))
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: ptr_(x)
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{}
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SPROUT_CONSTEXPR Result operator()(Arg1 x, Arg2 y) const {
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return ptr_(x, y);
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}
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};
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template<typename Arg1, typename Arg2, typename Result>
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inline SPROUT_CONSTEXPR sprout::pointer_to_binary_function<Arg1, Arg2, Result>
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ptr_fun(Result (*x)(Arg1, Arg2)) {
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return sprout::pointer_to_binary_function<Arg1, Arg2, Result>(x);
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_FUNCTIONAL_PTR_FUN_HPP
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