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// Copyright 2024 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/compat/invoke.hpp>
#define STATIC_ASSERT(...) static_assert((__VA_ARGS__), #__VA_ARGS__)
#define BOOST_TEST_EQ(x, y) STATIC_ASSERT((x) == (y))
struct F
{
constexpr int operator()() const
{
return -1;
}
constexpr int operator()( int x1 ) const noexcept
{
return x1;
}
constexpr int operator()( int x1, int x2 ) const
{
return 10*x1+x2;
}
constexpr int operator()( int x1, int x2, int x3 ) const noexcept
{
return 100*x1 + 10*x2 + x3;
}
};
int main()
{
{
BOOST_TEST_EQ( boost::compat::invoke_r<long>( F() ), -1 );
BOOST_TEST_EQ( boost::compat::invoke_r<long>( F(), 1 ), 1 );
BOOST_TEST_EQ( boost::compat::invoke_r<long>( F(), 1, 2 ), 12 );
BOOST_TEST_EQ( boost::compat::invoke_r<long>( F(), 1, 2, 3 ), 123 );
#if !defined(BOOST_NO_CXX14_CONSTEXPR)
STATIC_ASSERT( boost::compat::invoke_r<void>( F() ), true );
STATIC_ASSERT( boost::compat::invoke_r<void>( F(), 1 ), true );
STATIC_ASSERT( boost::compat::invoke_r<void>( F(), 1, 2 ), true );
STATIC_ASSERT( boost::compat::invoke_r<void>( F(), 1, 2, 3 ), true );
#endif
}
{
constexpr F f = {};
BOOST_TEST_EQ( boost::compat::invoke_r<long>( f ), -1 );
BOOST_TEST_EQ( boost::compat::invoke_r<long>( f, 1 ), 1 );
BOOST_TEST_EQ( boost::compat::invoke_r<long>( f, 1, 2 ), 12 );
BOOST_TEST_EQ( boost::compat::invoke_r<long>( f, 1, 2, 3 ), 123 );
#if !defined(BOOST_NO_CXX14_CONSTEXPR)
STATIC_ASSERT( boost::compat::invoke_r<void>( f ), true );
STATIC_ASSERT( boost::compat::invoke_r<void>( f, 1 ), true );
STATIC_ASSERT( boost::compat::invoke_r<void>( f, 1, 2 ), true );
STATIC_ASSERT( boost::compat::invoke_r<void>( f, 1, 2, 3 ), true );
#endif
}
}
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