FM / callable

/usr/include/boost/callable_traits

Name	Size	Mode	Actions
detail/	-	0755	rm
add_member_const.hpp	3143	0644	edit dl rm
add_member_cv.hpp	3103	0644	edit dl rm
add_member_lvalue_reference.hpp	3715	0644	edit dl rm
add_member_rvalue_reference.hpp	3750	0644	edit dl rm
add_member_volatile.hpp	3152	0644	edit dl rm
add_noexcept.hpp	3183	0644	edit dl rm
add_transaction_safe.hpp	3380	0644	edit dl rm
add_varargs.hpp	2544	0644	edit dl rm
apply_member_pointer.hpp	4188	0644	edit dl rm
apply_return.hpp	3344	0644	edit dl rm
args.hpp	3582	0644	edit dl rm
class_of.hpp	1718	0644	edit dl rm
function_type.hpp	3588	0644	edit dl rm
has_member_qualifiers.hpp	3153	0644	edit dl rm
has_varargs.hpp	2785	0644	edit dl rm
has_void_return.hpp	2777	0644	edit dl rm
is_const_member.hpp	2880	0644	edit dl rm
is_cv_member.hpp	2786	0644	edit dl rm
is_invocable.hpp	2839	0644	edit dl rm
is_lvalue_reference_member.hpp	2943	0644	edit dl rm
is_noexcept.hpp	2786	0644	edit dl rm
is_reference_member.hpp	2879	0644	edit dl rm
is_rvalue_reference_member.hpp	2950	0644	edit dl rm
is_transaction_safe.hpp	2983	0644	edit dl rm
is_volatile_member.hpp	2907	0644	edit dl rm
qualified_class_of.hpp	2344	0644	edit dl rm
remove_member_const.hpp	2511	0644	edit dl rm
remove_member_cv.hpp	2523	0644	edit dl rm
remove_member_reference.hpp	2522	0644	edit dl rm
remove_member_volatile.hpp	2565	0644	edit dl rm
remove_noexcept.hpp	2570	0644	edit dl rm
remove_transaction_safe.hpp	2769	0644	edit dl rm
remove_varargs.hpp	2586	0644	edit dl rm
return_type.hpp	2270	0644	edit dl rm

Edit: /usr/include/boost/callable_traits/function_type.hpp (3588B)

@Copyright Barrett Adair 2015-2017
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)

#ifndef BOOST_CLBL_TRTS_FUNCTION_TYPE_HPP
#define BOOST_CLBL_TRTS_FUNCTION_TYPE_HPP

#include <boost/callable_traits/detail/core.hpp>

namespace boost { namespace callable_traits {

//[ function_type_hpp
/*`[section:ref_function_type function_type]
[heading Header]
``#include <boost/callable_traits/function_type.hpp>``
[heading Definition]
*/

template<typename T>
using function_type_t = //see below
//<-
    detail::try_but_fail_if_invalid<typename detail::traits<
            detail::shallow_decay<T>>::function_type,
        cannot_determine_parameters_for_this_type>;

namespace detail {

template<typename T, typename = std::false_type>
    struct function_type_impl {};

template<typename T>
    struct function_type_impl <T, typename std::is_same<
        function_type_t<T>, detail::dummy>::type>
    {
        using type = function_type_t<T>;
    };
}

//->

template<typename T>
struct function_type : detail::function_type_impl<T> {};

//<-
}} // namespace boost::callable_traits
//->

/*`
[heading Constraints]
* `T` must be one of the following:
  * function
  * function pointer
  * function reference
  * member function pointer
  * member data pointer
  * user-defined type with a non-overloaded `operator()`
  * type of a non-generic lambda

[heading Behavior]
* When the constraints are violated, a substitution failure occurs.
* When `T` is a function, the aliased type is identical to `T`, except that the aliased function type will not have member qualifiers or the `transaction_safe` specifier.
* When `T` is a function pointer, the aliased type is equivalent to `std::remove_pointer_t<T>`.
* When `T` is a function reference, the aliased type is equivalent to `std::remove_reference_t<T>`.
* When `T` is a function object, the aliased type is a function type with the same return type and parameter list as `T`'s `operator()`.
* When `T` is a member function pointer, the aliased type is a function type with the same return type as `T`, and the first parameter is a reference to the parent class of `T`, qualified according to the member qualifiers on `T`. The subsequent parameters, if any, are the parameter types of `T`.
* When `T` is a member data pointer, the aliased type is a function type returning the underlying member type of `T`, taking a single parameter, which is a `const` reference to the parent type of `T`.
* In all cases, the aliased function type will not have member qualifiers, and will not have the `transaction_safe` specifier.

[heading Input/Output Examples]
[table
    [[`T`]                              [`function_type_t<T>`]]
    [[`void(int)`]                      [`void(int)`]]
    [[`void(int) const`]                [`void(int)`]]
    [[`void(int) transaction_safe`]     [`void(int)`]]
    [[`void(*const &)(int)`]            [`void(int)`]]
    [[`void(&)(int)`]                   [`void(int)`]]
    [[`void(* volatile)()`]             [`void()`]]
    [[`int(foo::*)(int)`]               [`int(foo&, int)`]]
    [[`int(foo::*)(int) const`]         [`int(const foo&, int)`]]
    [[`void(foo::*)() volatile &&`]     [`void(volatile foo&&)`]]
    [[`int foo::*`]                     [`int(const foo&)`]]
    [[`const int foo::*`]               [`int(const foo&)`]]
    [[`int`]                            [(substitution failure)]]
]

[heading Example Program]
[import ../example/function_type.cpp]
[function_type]
[endsect]
*/
//]

#endif

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