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Diffstat (limited to 'o3tl/inc/o3tl/compat_functional.hxx')
-rw-r--r-- | o3tl/inc/o3tl/compat_functional.hxx | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/o3tl/inc/o3tl/compat_functional.hxx b/o3tl/inc/o3tl/compat_functional.hxx deleted file mode 100644 index 00ae33cb23bb..000000000000 --- a/o3tl/inc/o3tl/compat_functional.hxx +++ /dev/null @@ -1,151 +0,0 @@ -/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ -/* - * - * Copyright (c) 1994 - * Hewlett-Packard Company - * - * Copyright (c) 1996-1998 - * Silicon Graphics Computer Systems, Inc. - * - * Copyright (c) 1997 - * Moscow Center for SPARC Technology - * - * Copyright (c) 1999 - * Boris Fomitchev - * - * This material is provided "as is", with absolutely no warranty expressed - * or implied. Any use is at your own risk. - * - * Permission to use or copy this software for any purpose is hereby granted - * without fee, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - * - */ - -/* - * Lifted and paraphrased from STLport - with additions from Fridrich - * Strba and Thorsten Behrens - */ - -#ifndef INCLUDED_O3TL_COMPAT_FUNCTIONAL_HXX -#define INCLUDED_O3TL_COMPAT_FUNCTIONAL_HXX - -#include <functional> - -namespace o3tl -{ - -/// Identity functor - return the input value -template<class T> -struct identity : public std::unary_function<T, T> -{ - T operator()(const T& y) const - { - return (y); - } -}; - -/// Functor, given two parameters, return the first -template<class T1,class T2> -struct project1st : public std::binary_function<T1, T2, T1> -{ - T1 operator()(const T1& y, const T2&) const - { - return (y); - } -}; - -/// Functor, given two parameters, return the second -template<class T1,class T2> -struct project2nd : public std::binary_function<T1, T2, T2> -{ - T2 operator()(const T1&, const T2& x) const - { - return (x); - } -}; - -/// Select first value of a pair -template<class P> -struct select1st : public std::unary_function<P, typename P::first_type> -{ - const typename P::first_type& operator()(const P& y) const - { - return (y.first); - } -}; - -/// Select second value of a pair -template<class P> -struct select2nd : public std::unary_function<P, typename P::second_type> -{ - const typename P::second_type& operator()(const P& y) const - { - return (y.second); - } -}; - -/// Call F1 with the result of F2 applied to the one input parameter -template<class F1, class F2> -class unary_compose : public std::unary_function<typename F2::argument_type, typename F1::result_type> -{ - public: - unary_compose(const F1& fnction1, const F2& fnction2) : ftor1(fnction1), ftor2(fnction2) {} - - typename F1::result_type operator()(const typename F2::argument_type& y) const - { - return (ftor1(ftor2(y))); - } - - protected: - F1 ftor1; - F2 ftor2; -}; - -/// Create functor that calls F1 with the result of F2 applied to the one input parameter -template<class F1, class F2> -inline unary_compose<F1, F2> compose1(const F1& fnction1, const F2& fnction2) -{ - return (unary_compose<F1, F2>(fnction1, fnction2)); -} - -/// Calls F2 and F3 for the two args of F1, respectively -template<class F1, class F2, class F3> -class binary_compose : public std::unary_function<typename F2::argument_type,typename F1::result_type> -{ - public: - binary_compose(const F1& fnction1, const F2& fnction2, const F3& fnction3) : ftor1(fnction1), ftor2(fnction2), ftor3(fnction3) {} - - typename F1::result_type operator()(const typename F2::argument_type& y) const - { - return (ftor1(ftor2(y), ftor3(y))); - } - - protected: - F1 ftor1; - F2 ftor2; - F3 ftor3; -}; - -/// Creates functor that calls F2 and F3 for the two args of F1, respectively -template<class F1, class F2, class F3> -inline binary_compose<F1, F2, F3> compose2(const F1& fnction1, const F2& fnction2, const F3& fnction3) -{ - return (binary_compose<F1, F2, F3>(fnction1, fnction2, fnction3)); -} - -/// Algo that assigns val, val+1, ... to the given range -template<typename FwdIter, typename ValueType> -inline void iota(FwdIter first, FwdIter last, ValueType val) -{ - while(first != last) - *first++ = val++; -} - -} // namespace o3tl - -#endif - -/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |