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			102 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			102 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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| 
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| @Copyright Barrett Adair 2015-2017
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| Distributed under the Boost Software License, Version 1.0.
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| (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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| 
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| */
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| 
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| #ifndef BOOST_CLBL_TRTS_ADD_MEMBER_CV_HPP
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| #define BOOST_CLBL_TRTS_ADD_MEMBER_CV_HPP
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| 
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| #include <boost/callable_traits/detail/core.hpp>
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| 
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| namespace boost { namespace callable_traits {
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| 
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| //[ add_member_cv_hpp
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| /*`
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| [section:ref_add_member_cv add_member_cv]
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| [heading Header]
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| ``#include <boost/callable_traits/add_member_cv.hpp>``
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| [heading Definition]
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| */
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| 
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| template<typename T>
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| using add_member_cv_t = //see below
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| //<-
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| #ifdef BOOST_CLBL_TRTS_DISABLE_ABOMINABLE_FUNCTIONS
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| 
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|     detail::sfinae_try<
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|         typename detail::traits<T>::add_member_cv,
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| 
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|         detail::fail_when_same<typename detail::traits<T>::add_member_cv,
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|                 detail::abominable_functions_not_supported_on_this_compiler,
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|             this_compiler_doesnt_support_abominable_function_types>,
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| 
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|         detail::fail_if_invalid<typename detail::traits<T>::add_member_cv,
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|             member_qualifiers_are_illegal_for_this_type>>;
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| #else
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| 
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|     detail::try_but_fail_if_invalid<
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|         typename detail::traits<T>::add_member_cv,
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|         member_qualifiers_are_illegal_for_this_type>;
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| 
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| #endif // #ifdef BOOST_CLBL_TRTS_DISABLE_ABOMINABLE_FUNCTIONS
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| 
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| namespace detail {
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| 
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|     template<typename T, typename = std::false_type>
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|     struct add_member_cv_impl {};
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| 
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|     template<typename T>
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|     struct add_member_cv_impl <T, typename std::is_same<
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|         add_member_cv_t<T>, detail::dummy>::type>
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|     {
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|         using type = add_member_cv_t<T>;
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|     };
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| }
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| 
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| //->
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| 
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| template<typename T>
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| struct add_member_cv : detail::add_member_cv_impl<T> {};
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| 
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| //<-
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| }} // namespace boost::callable_traits
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| //->
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| 
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| /*`
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| [heading Constraints]
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| * `T` must be a function type or a member function pointer type
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| * If `T` is a pointer, it may not be cv/ref qualified
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| 
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| [heading Behavior]
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| * A substitution failure occurs if the constraints are violated.
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| * Adds member `const` and `volatile` qualifiers to `T`, if not already present.
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| 
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| [heading Input/Output Examples]
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| [table
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|     [[`T`]                              [`add_member_cv_t<T>`]]
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|     [[`int()`]                          [`int() const volatile`]]
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|     [[`int(foo::*)()`]                  [`int(foo::*)() const volatile`]]
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|     [[`int(foo::*)() &`]                [`int(foo::*)() const volatile &`]]
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|     [[`int(foo::*)() &&`]               [`int(foo::*)() const volatile &&`]]
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|     [[`int(foo::*)() const`]            [`int(foo::*)() const volatile`]]
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|     [[`int(foo::*)() volatile`]         [`int(foo::*)() const volatile`]]
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|     [[`int(foo::*)() transaction_safe`] [`int(foo::*)() const volatile transaction_safe`]]
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|     [[`int`]                            [(substitution failure)]]
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|     [[`int (&)()`]                      [(substitution failure)]]
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|     [[`int (*)()`]                      [(substitution failure)]]
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|     [[`int foo::*`]                     [(substitution failure)]]
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|     [[`int (foo::* const)()`]           [(substitution failure)]]
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| ]
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| 
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| [heading Example Program]
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| [import ../example/add_member_cv.cpp]
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| [add_member_cv]
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| [endsect]
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| */
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| //]
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| 
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| #endif
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