85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
// (C) Copyright John Maddock 2005.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifdef TEST_STD_HEADERS
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#include <functional>
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#else
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#include <boost/tr1/functional.hpp>
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#endif
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#include <boost/static_assert.hpp>
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#include "verify_return.hpp"
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// This should verify that _1 etc are lvalues, but we leave that
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// to the "tricky" test as the Boost implementation doesn't always
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// guarentee that:
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template <class T>
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void check_placeholder(T)
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{
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T t;
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T t2(t);
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(void)t2;
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//BOOST_STATIC_ASSERT(::std::tr1::is_placeholder<T>::value);
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}
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template <class Binder, class R>
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void check_bind0(Binder b, R r)
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{
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//BOOST_STATIC_ASSERT(::std::tr1::is_bind_expression<Binder>::value);
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verify_return_type(b(), r);
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typedef typename Binder::result_type result_type;
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BOOST_STATIC_ASSERT((::boost::is_same<result_type, R>::value));
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}
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template <class Binder, class R, class A1>
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void check_bind1(Binder b, R r, A1 a1)
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{
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//BOOST_STATIC_ASSERT(::std::tr1::is_bind_expression<Binder>::value);
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verify_return_type(b(a1), r);
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}
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double test_proc(int a, char b, long c)
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{
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return a+b+c;
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}
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struct from_double
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{
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from_double(double){}
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};
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int main()
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{
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check_placeholder(std::tr1::placeholders::_1);
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check_placeholder(std::tr1::placeholders::_2);
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check_placeholder(std::tr1::placeholders::_3);
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check_placeholder(std::tr1::placeholders::_4);
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check_placeholder(std::tr1::placeholders::_5);
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check_placeholder(std::tr1::placeholders::_6);
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check_placeholder(std::tr1::placeholders::_7);
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check_placeholder(std::tr1::placeholders::_8);
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check_placeholder(std::tr1::placeholders::_9);
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check_bind0(std::tr1::bind(&test_proc, 0, 0, 0), double(0));
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//check_bind0(std::tr1::bind<double>(&test_proc, 0, 0, 0), double(0));
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check_bind1(std::tr1::bind(&test_proc, 0, 0, std::tr1::placeholders::_1), double(0), 0);
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check_bind1(std::tr1::bind(&test_proc, std::tr1::placeholders::_1, 0, 0), double(0), 0);
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check_bind0(std::tr1::bind(test_proc, 0, 0, 0), double(0));
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//check_bind0(std::tr1::bind<double>(test_proc, 0, 0, 0), double(0));
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check_bind1(std::tr1::bind(test_proc, 0, 0, std::tr1::placeholders::_1), double(0), 0);
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check_bind1(std::tr1::bind(test_proc, std::tr1::placeholders::_1, 0, 0), double(0), 0);
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check_bind0(std::tr1::bind(std::plus<double>(), 0, 1), double(0));
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check_bind0(std::tr1::bind<double>(std::plus<double>(), 1, 0), double(0));
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check_bind0(std::tr1::bind<from_double>(std::plus<double>(), 1, 0), from_double(0));
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check_bind1(std::tr1::bind(std::plus<double>(), 0, std::tr1::placeholders::_1), double(0), 0);
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check_bind1(std::tr1::bind(std::plus<double>(), std::tr1::placeholders::_1, 0), double(0), 0);
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return 0;
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}
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