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108 lines
4.1 KiB
C++
108 lines
4.1 KiB
C++
// Copyright 2024 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/compat/invoke.hpp>
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#include <boost/core/lightweight_test_trait.hpp>
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#include <boost/mp11/utility.hpp>
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struct F
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{
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void operator()()
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{
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}
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char operator()( char x1 ) noexcept
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{
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return x1;
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}
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int operator()( int x1, int x2 ) const
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{
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return 10*x1+x2;
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}
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double operator()( float x1, float x2, float x3 ) const noexcept
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{
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return 100*x1 + 10*x2 + x3;
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}
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};
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struct X
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{
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};
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int main()
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{
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using boost::compat::invoke_result_t;
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using boost::mp11::mp_valid;
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// nonfunction
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, int, int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, int, int, int> ));
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// function reference
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BOOST_TEST_TRAIT_SAME( invoke_result_t<void(&)()>, void );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<char(&)(int), char>, char );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int(&)(int, int), int, int>, int );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<double(&)(double, double, double), float, float, float>, double );
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, void(&)(), int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, char(&)(int)> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, char(&)(int), int, int> ));
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// function pointer
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BOOST_TEST_TRAIT_SAME( invoke_result_t<void(*)()>, void );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<char(*)(int), char>, char );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int(*)(int, int), int, int>, int );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<double(*)(double, double, double), float, float, float>, double );
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, void(*)(), int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, char(*)(int)> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, char(*)(int), int, int> ));
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// object
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BOOST_TEST_TRAIT_SAME( invoke_result_t<F>, void );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<F, char>, char );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<F, int, int>, int );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<F, float, float, float>, double );
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, F, int, int, int, int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, F const> ));
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// member function pointer
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BOOST_TEST_TRAIT_SAME( invoke_result_t<void(X::*)(), X>, void );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<char(X::*)(int), X, char>, char );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int(X::*)(int, int), X, int, int>, int );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<double(X::*)(double, double, double), X, float, float, float>, double );
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, void(X::*)()> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, void(X::*)(), int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, void(X::*)(), X, int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, char(X::*)(int)> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, char(X::*)(int), int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, char(X::*)(int), X> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, char(X::*)(int), X, int, int> ));
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// member data pointer
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int X::*, X>, int&& );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int X::*, X const>, int const&& );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int X::*, X&>, int& );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int X::*, X const&>, int const& );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int X::*, X*>, int& );
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BOOST_TEST_TRAIT_SAME( invoke_result_t<int X::*, X const*>, int const& );
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, int X::*> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, int X::*, int> ));
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BOOST_TEST_TRAIT_FALSE(( mp_valid<invoke_result_t, int X::*, X, int> ));
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return boost::report_errors();
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}
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