1/************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22#ifndef SYSTEM_STL_FUNCTIONAL 23#define SYSTEM_STL_FUNCTIONAL 24 25#if defined(HAVE_STL_INCLUDE_PATH) 26 // TODO: use computed include file name 27 #include_next <functional> 28#elif defined(_MSC_VER) 29 #include <../../VC/include/functional> 30 namespace std { using tr1::hash; } 31#if 1 // TODO: enable only when std::_Swap_adl is not available 32 // note: VS2008SP1 has known problems after a security update (KB971092,KB974479,KB974223) 33 namespace std{ template<class _T> void _Swap_adl(_T& l, _T& r) {swap(l,r);} } 34#endif 35#else // fall back to boost/tr1 36 #include <boost/tr1/tr1/functional> 37 #include <boost/functional/hash.hpp> 38#endif 39 40 41#ifndef NO_STLPORT4_EMULATION 42 43namespace std 44{ 45// emulate SGI extensions to the STL using http://www.sgi.com/tech/stl/stl_function.h as reference 46template< typename T> struct identity : unary_function<T,T> { T operator()(const T& t) const { return t;} }; 47template< typename T, typename U> struct project2nd : public binary_function<T,U,U> { U operator()(const T&, const U& u) const { return u;}}; 48template<typename P> struct select1st : public unary_function<P, typename P::first_type> { const typename P::first_type& operator()(const P& p) const { return p.first; }}; 49template<typename P> struct select2nd : public unary_function<P, typename P::second_type> { const typename P::second_type& operator()(const P& p) const { return p.second; }}; 50 51#if (defined(_MSC_VER) && (_MSC_VER >= 1600)) || defined(__GXX_EXPERIMENTAL_CXX0X__) 52template<typename T> inline T&& forward( typename identity<T>::type&& t) { return t; } 53#endif // C++11 move semantics 54 55template<typename Op1, typename Op2> class unary_compose : public unary_function<typename Op2::argument_type, typename Op1::result_type> 56{ 57protected: 58 Op1 aOp1; 59 Op2 aOp2; 60public: 61 unary_compose( const Op1& rOp1, const Op2& rOp2) : aOp1(rOp1), aOp2(rOp2) {} 62 typename Op1::result_type operator()( const typename Op2::argument_type& x) const { return aOp1(aOp2(x)); } 63}; 64 65template<typename Op1, typename Op2> inline unary_compose<Op1,Op2> compose1( const Op1& rOp1, const Op2& rOp2) { return unary_compose<Op1,Op2>(rOp1, rOp2); } 66 67} // namespace std 68 69#endif // NO_STLPORT4_EMULATION 70 71#endif 72 73