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Add is_nothrow_invocable_r
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@pdimov
pdimov committed Apr 6, 2024
1 parent 3025c1b commit 2bc1689
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21 changes: 21 additions & 0 deletions include/boost/compat/invoke.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,27 @@ template<class R, class F, class... A> struct is_invocable_r:
conditional_t< std::is_void<R>::value, std::true_type,
detail::is_invocable_r_<R, F, A...> >> {};

// is_nothrow_invocable_r

#if BOOST_WORKAROUND(BOOST_MSVC, < 1910)

template<class R, class F, class... A> struct is_nothrow_invocable_r: std::false_type {};

#else

namespace detail {

template<class R, class F, class... A> struct is_nothrow_invocable_r_
{
using type = std::integral_constant<bool, noexcept( compat::invoke_r<R>( std::declval<F>(), std::declval<A>()... ) )>;
};

} // namespace detail

template<class R, class F, class... A> struct is_nothrow_invocable_r: conditional_t< is_invocable_r<R, F, A...>::value, detail::is_nothrow_invocable_r_<R, F, A...>, std::false_type >::type {};

#endif

} // namespace compat
} // namespace boost

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1 change: 1 addition & 0 deletions test/Jamfile
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Expand Up @@ -93,3 +93,4 @@ compile invoke_r_md_constexpr_test.cpp
: <toolset>gcc-4.8:<build>no <toolset>gcc-4.9:<build>no ;

run is_invocable_r_test.cpp ;
run is_nothrow_invocable_r_test.cpp ;
288 changes: 288 additions & 0 deletions test/is_nothrow_invocable_r_test.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,288 @@
// 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>
#include <boost/core/lightweight_test_trait.hpp>
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>

struct F
{
void operator()()
{
}

char operator()( char x1 ) noexcept
{
return x1;
}

int operator()( int x1, int x2 ) const
{
return 10*x1+x2;
}

double operator()( float x1, float x2, float x3 ) const noexcept
{
return 100*x1 + 10*x2 + x3;
}
};

struct X
{
};

struct Y
{
Y( int );
Y( double ) noexcept;
};

int main()
{
using boost::compat::is_nothrow_invocable_r;

// nonfunction

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int, int, int> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int, int, int> ));

// function reference

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(&)()> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(&)(int), char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int(&)(int, int), int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, double(&)(double, double, double), float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, void(&)()> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(&)(int), char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int(&)(int, int), int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, double(&)(double, double, double), float, float, float> ));

#if defined(__cpp_noexcept_function_type)

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(&)() noexcept> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, char(&)(int) noexcept, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int(&)(int, int) noexcept, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, double(&)(double, double, double) noexcept, float, float, float> ));

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, void(&)() noexcept> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, char(&)(int) noexcept, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int(&)(int, int) noexcept, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, double(&)(double, double, double) noexcept, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, void(&)() noexcept> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, char(&)(int) noexcept, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int(&)(int, int) noexcept, int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, double(&)(double, double, double) noexcept, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, void(&)() noexcept> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, char(&)(int) noexcept, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int(&)(int, int) noexcept, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double(&)(double, double, double) noexcept, float, float, float> ));

#endif

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(&)(), int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(&)(int)> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(&)(int), int, int> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, void(&)(), int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(&)(int)> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(&)(int), int, int> ));

// function pointer

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(*)()> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(*)(int), char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int(*)(int, int), int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, double(*)(double, double, double), float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, void(*)()> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(*)(int), char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int(*)(int, int), int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, double(*)(double, double, double), float, float, float> ));

#if defined(__cpp_noexcept_function_type)

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(*)() noexcept> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, char(*)(int) noexcept, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int(*)(int, int) noexcept, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, double(*)(double, double, double) noexcept, float, float, float> ));

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, void(*)() noexcept> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, char(*)(int) noexcept, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int(*)(int, int) noexcept, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, double(*)(double, double, double) noexcept, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, void(*)() noexcept> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, char(*)(int) noexcept, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int(*)(int, int) noexcept, int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, double(*)(double, double, double) noexcept, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, void(*)() noexcept> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, char(*)(int) noexcept, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int(*)(int, int) noexcept, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double(*)(double, double, double) noexcept, float, float, float> ));

#endif

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(*)(), int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(*)(int)> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(*)(int), int, int> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, void(*)(), int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(*)(int)> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(*)(int), int, int> ));

// object

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, F> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, F, int, int> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, F> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, F, int, int> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, F> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, F, int, int> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, F> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, F, int, int> ));

#if !BOOST_WORKAROUND(BOOST_MSVC, < 1910)

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, F, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, F, float, float, float> ));

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, F, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, F, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, F, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, F, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, F, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, F, float, float, float> ));

#endif

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, F, int, int, int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, F const> ));

// member function pointer

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(X::*)(), X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(X::*)(int), X, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int(X::*)(int, int), X, int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, double(X::*)(double, double, double), X, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, void(X::*)(), X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(X::*)(int), X, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int(X::*)(int, int), X, int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, double(X::*)(double, double, double), X, float, float, float> ));

#if defined(__cpp_noexcept_function_type)

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(X::*)() noexcept, X> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, char(X::*)(int) noexcept, X, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int(X::*)(int, int) noexcept, X, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, double(X::*)(double, double, double) noexcept, X, float, float, float> ));

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, void(X::*)() noexcept, X> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, char(X::*)(int) noexcept, X, char> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int(X::*)(int, int) noexcept, X, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, double(X::*)(double, double, double) noexcept, X, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, void(X::*)() noexcept, X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, char(X::*)(int) noexcept, X, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int(X::*)(int, int) noexcept, X, int, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, double(X::*)(double, double, double) noexcept, X, float, float, float> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, void(X::*)() noexcept, X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, char(X::*)(int) noexcept, X, char> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int(X::*)(int, int) noexcept, X, int, int> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double(X::*)(double, double, double) noexcept, X, float, float, float> ));

#endif

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(X::*)()> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(X::*)(), int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, void(X::*)(), X, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(X::*)(int)> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(X::*)(int), int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(X::*)(int), X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, char(X::*)(int), X, int, int> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, void(X::*)()> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, void(X::*)(), int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, void(X::*)(), X, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(X::*)(int)> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(X::*)(int), int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(X::*)(int), X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, char(X::*)(int), X, int, int> ));

// member data pointer

#if !BOOST_WORKAROUND(BOOST_MSVC, < 1910)

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int X::*, X> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int X::*, X const> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int X::*, X&> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int X::*, X const&> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int X::*, X*> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<long, int X::*, X const*> ));

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int X::*, X> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int X::*, X const> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int X::*, X&> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int X::*, X const&> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int X::*, X*> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<void, int X::*, X const*> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int X::*, X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int X::*, X const> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int X::*, X&> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int X::*, X const&> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int X::*, X*> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<X, int X::*, X const*> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int X::*, X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int X::*, X const> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int X::*, X&> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int X::*, X const&> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int X::*, X*> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<Y, int X::*, X const*> ));

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double X::*, X> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double X::*, X const> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double X::*, X&> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double X::*, X const&> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double X::*, X*> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<Y, double X::*, X const*> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<int&, int X::*, X> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<int&, int X::*, X const> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<int&, int X::*, X&> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<int&, int X::*, X const&> ));
BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<int&, int X::*, X*> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<int&, int X::*, X const*> ));

BOOST_TEST_TRAIT_TRUE(( is_nothrow_invocable_r<int&&, int X::*, X> ));

#endif

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int X::*> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int X::*, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<long, int X::*, X, int> ));

BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int X::*> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int X::*, int> ));
BOOST_TEST_TRAIT_FALSE(( is_nothrow_invocable_r<void, int X::*, X, int> ));

return boost::report_errors();
}

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