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Implement P0013R1: Logical Operator Type Traits. Make a hidden implementation (__and_, __or_, and __not_) so that we can use them elsewhere in non-C++17 code - for example, in the LFTS

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@253215 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2015-11-16 15:54:13 +00:00
parent 98984f23c6
commit fe99a30bd0
5 changed files with 366 additions and 139 deletions
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66
test/std/utilities/meta/meta.logical/conjunction.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// type_traits
// template<class... B> struct conjunction; // C++17
// template<class... B>
// constexpr bool conjunction_v = conjunction<B...>::value; // C++17
#include <type_traits>
#include <cassert>
struct True { static constexpr bool value = true; };
struct False { static constexpr bool value = false; };
int main()
{
static_assert ( std::conjunction<>::value, "" );
static_assert ( std::conjunction<std::true_type >::value, "" );
static_assert (!std::conjunction<std::false_type>::value, "" );
static_assert ( std::conjunction_v<>, "" );
static_assert ( std::conjunction_v<std::true_type >, "" );
static_assert (!std::conjunction_v<std::false_type>, "" );
static_assert ( std::conjunction<std::true_type, std::true_type >::value, "" );
static_assert (!std::conjunction<std::true_type, std::false_type>::value, "" );
static_assert (!std::conjunction<std::false_type, std::true_type >::value, "" );
static_assert (!std::conjunction<std::false_type, std::false_type>::value, "" );
static_assert ( std::conjunction_v<std::true_type, std::true_type >, "" );
static_assert (!std::conjunction_v<std::true_type, std::false_type>, "" );
static_assert (!std::conjunction_v<std::false_type, std::true_type >, "" );
static_assert (!std::conjunction_v<std::false_type, std::false_type>, "" );
static_assert ( std::conjunction<std::true_type, std::true_type, std::true_type >::value, "" );
static_assert (!std::conjunction<std::true_type, std::false_type, std::true_type >::value, "" );
static_assert (!std::conjunction<std::false_type, std::true_type, std::true_type >::value, "" );
static_assert (!std::conjunction<std::false_type, std::false_type, std::true_type >::value, "" );
static_assert (!std::conjunction<std::true_type, std::true_type, std::false_type>::value, "" );
static_assert (!std::conjunction<std::true_type, std::false_type, std::false_type>::value, "" );
static_assert (!std::conjunction<std::false_type, std::true_type, std::false_type>::value, "" );
static_assert (!std::conjunction<std::false_type, std::false_type, std::false_type>::value, "" );
static_assert ( std::conjunction_v<std::true_type, std::true_type, std::true_type >, "" );
static_assert (!std::conjunction_v<std::true_type, std::false_type, std::true_type >, "" );
static_assert (!std::conjunction_v<std::false_type, std::true_type, std::true_type >, "" );
static_assert (!std::conjunction_v<std::false_type, std::false_type, std::true_type >, "" );
static_assert (!std::conjunction_v<std::true_type, std::true_type, std::false_type>, "" );
static_assert (!std::conjunction_v<std::true_type, std::false_type, std::false_type>, "" );
static_assert (!std::conjunction_v<std::false_type, std::true_type, std::false_type>, "" );
static_assert (!std::conjunction_v<std::false_type, std::false_type, std::false_type>, "" );
static_assert ( std::conjunction<True >::value, "" );
static_assert (!std::conjunction<False>::value, "" );
static_assert ( std::conjunction_v<True >, "" );
static_assert (!std::conjunction_v<False>, "" );
}

66
test/std/utilities/meta/meta.logical/disjunction.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// type_traits
// template<class... B> struct disjunction; // C++17
// template<class... B>
// constexpr bool disjunction_v = disjunction<B...>::value; // C++17
#include <type_traits>
#include <cassert>
struct True { static constexpr bool value = true; };
struct False { static constexpr bool value = false; };
int main()
{
static_assert (!std::disjunction<>::value, "" );
static_assert ( std::disjunction<std::true_type >::value, "" );
static_assert (!std::disjunction<std::false_type>::value, "" );
static_assert (!std::disjunction_v<>, "" );
static_assert ( std::disjunction_v<std::true_type >, "" );
static_assert (!std::disjunction_v<std::false_type>, "" );
static_assert ( std::disjunction<std::true_type, std::true_type >::value, "" );
static_assert ( std::disjunction<std::true_type, std::false_type>::value, "" );
static_assert ( std::disjunction<std::false_type, std::true_type >::value, "" );
static_assert (!std::disjunction<std::false_type, std::false_type>::value, "" );
static_assert ( std::disjunction_v<std::true_type, std::true_type >, "" );
static_assert ( std::disjunction_v<std::true_type, std::false_type>, "" );
static_assert ( std::disjunction_v<std::false_type, std::true_type >, "" );
static_assert (!std::disjunction_v<std::false_type, std::false_type>, "" );
static_assert ( std::disjunction<std::true_type, std::true_type, std::true_type >::value, "" );
static_assert ( std::disjunction<std::true_type, std::false_type, std::true_type >::value, "" );
static_assert ( std::disjunction<std::false_type, std::true_type, std::true_type >::value, "" );
static_assert ( std::disjunction<std::false_type, std::false_type, std::true_type >::value, "" );
static_assert ( std::disjunction<std::true_type, std::true_type, std::false_type>::value, "" );
static_assert ( std::disjunction<std::true_type, std::false_type, std::false_type>::value, "" );
static_assert ( std::disjunction<std::false_type, std::true_type, std::false_type>::value, "" );
static_assert (!std::disjunction<std::false_type, std::false_type, std::false_type>::value, "" );
static_assert ( std::disjunction_v<std::true_type, std::true_type, std::true_type >, "" );
static_assert ( std::disjunction_v<std::true_type, std::false_type, std::true_type >, "" );
static_assert ( std::disjunction_v<std::false_type, std::true_type, std::true_type >, "" );
static_assert ( std::disjunction_v<std::false_type, std::false_type, std::true_type >, "" );
static_assert ( std::disjunction_v<std::true_type, std::true_type, std::false_type>, "" );
static_assert ( std::disjunction_v<std::true_type, std::false_type, std::false_type>, "" );
static_assert ( std::disjunction_v<std::false_type, std::true_type, std::false_type>, "" );
static_assert (!std::disjunction_v<std::false_type, std::false_type, std::false_type>, "" );
static_assert ( std::disjunction<True >::value, "" );
static_assert (!std::disjunction<False>::value, "" );
static_assert ( std::disjunction_v<True >, "" );
static_assert (!std::disjunction_v<False>, "" );
}

39
test/std/utilities/meta/meta.logical/negation.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// type_traits
// template<class B> struct negation; // C++17
// template<class B>
// constexpr bool negation_v = negation<B>::value; // C++17
#include <type_traits>
#include <cassert>
struct True { static constexpr bool value = true; };
struct False { static constexpr bool value = false; };
int main()
{
static_assert (!std::negation<std::true_type >::value, "" );
static_assert ( std::negation<std::false_type>::value, "" );
static_assert (!std::negation_v<std::true_type >, "" );
static_assert ( std::negation_v<std::false_type>, "" );
static_assert (!std::negation<True >::value, "" );
static_assert ( std::negation<False>::value, "" );
static_assert (!std::negation_v<True >, "" );
static_assert ( std::negation_v<False>, "" );
static_assert ( std::negation<std::negation<std::true_type >>::value, "" );
static_assert (!std::negation<std::negation<std::false_type>>::value, "" );
}