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[libcxx] LWG2420 bits for bind<void> - Patch from K-Ballo

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Implemented LWG2420 bits for bind<void>

Review: http://reviews.llvm.org/D10997


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@241967 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier 2015-07-10 23:29:18 +00:00
parent 8f7fe5cd8e
commit f301a117e1
3 changed files with 26 additions and 9 deletions
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6
include/__functional_03
View File

@ -2091,14 +2091,16 @@ public:
result_type
operator()(_Args&& ...__args)
{
return base::operator()(_VSTD::forward<_Args>(__args)...);
typedef __invoke_void_return_wrapper<_Rp> _Invoker;
return _Invoker::__call(static_cast<base&>(*this), _VSTD::forward<_Args>(__args)...);
}
template <class ..._Args>
result_type
operator()(_Args&& ...__args) const
{
return base::operator()(_VSTD::forward<_Args>(__args)...);
typedef __invoke_void_return_wrapper<_Rp> _Invoker;
return _Invoker::__call(static_cast<base const&>(*this), _VSTD::forward<_Args>(__args)...);
}
};

10
include/functional
View File

@ -2186,12 +2186,13 @@ public:
typename enable_if
<
is_convertible<typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type,
result_type>::value,
result_type>::value || is_void<_Rp>::value,
result_type
>::type
operator()(_Args&& ...__args)
{
return base::operator()(_VSTD::forward<_Args>(__args)...);
typedef __invoke_void_return_wrapper<_Rp> _Invoker;
return _Invoker::__call(static_cast<base&>(*this), _VSTD::forward<_Args>(__args)...);
}
template <class ..._Args>
@ -2199,12 +2200,13 @@ public:
typename enable_if
<
is_convertible<typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type,
result_type>::value,
result_type>::value || is_void<_Rp>::value,
result_type
>::type
operator()(_Args&& ...__args) const
{
return base::operator()(_VSTD::forward<_Args>(__args)...);
typedef __invoke_void_return_wrapper<_Rp> _Invoker;
return _Invoker::__call(static_cast<base const&>(*this), _VSTD::forward<_Args>(__args)...);
}
};

19
test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_void_0.pass.cpp
View File

@ -39,21 +39,34 @@ test_const(const F& f)
void f() {++count;}
struct A_int_0
int g() {++count; return 0;}
struct A_void_0
{
void operator()() {++count;}
void operator()() const {count += 2;}
};
struct A_int_0
{
int operator()() {++count; return 4;}
int operator()() const {count += 2; return 5;}
};
int main()
{
test(std::bind(f));
test(std::bind(&f));
test(std::bind(A_int_0()));
test_const(std::bind(A_int_0()));
test(std::bind(A_void_0()));
test_const(std::bind(A_void_0()));
test(std::bind<void>(f));
test(std::bind<void>(&f));
test(std::bind<void>(A_void_0()));
test_const(std::bind<void>(A_void_0()));
test(std::bind<void>(g));
test(std::bind<void>(&g));
test(std::bind<void>(A_int_0()));
test_const(std::bind<void>(A_int_0()));
}