[libcxx] r287988 - Implement conjuntion/disjuntion/negation for LFTS v2. Same code and tests for the ones in std::
Marshall Clow via cfe-commits
cfe-commits at lists.llvm.org
Sat Nov 26 10:45:03 PST 2016
Author: marshall
Date: Sat Nov 26 12:45:03 2016
New Revision: 287988
URL: http://llvm.org/viewvc/llvm-project?rev=287988&view=rev
Log:
Implement conjuntion/disjuntion/negation for LFTS v2. Same code and tests for the ones in std::
Added:
libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/
libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/conjunction.pass.cpp
libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/disjunction.pass.cpp
libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/negation.pass.cpp
Modified:
libcxx/trunk/include/experimental/type_traits
Modified: libcxx/trunk/include/experimental/type_traits
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/experimental/type_traits?rev=287988&r1=287987&r2=287988&view=diff
==============================================================================
--- libcxx/trunk/include/experimental/type_traits (original)
+++ libcxx/trunk/include/experimental/type_traits Sat Nov 26 12:45:03 2016
@@ -459,6 +459,24 @@ template <class _Tp>
using raw_invocation_type_t = typename raw_invocation_type<_Tp>::type;
*/
+// 3.3.3, Logical operator traits
+template <class...> using void_t = void;
+
+template <class... _Args>
+struct conjunction : _VSTD::__and_<_Args...> {};
+template <class... _Args>
+_LIBCPP_CONSTEXPR bool conjunction_v = conjunction<_Args...>::value;
+
+template <class... _Args>
+struct disjunction : _VSTD::__or_<_Args...> {};
+template <class... _Args>
+_LIBCPP_CONSTEXPR bool disjunction_v = disjunction<_Args...>::value;
+
+template <class _Tp>
+struct negation : _VSTD::__not_<_Tp> {};
+template<class _Tp>
+_LIBCPP_CONSTEXPR bool negation_v = negation<_Tp>::value;
+
// 3.3.4, Detection idiom
template <class...> using void_t = void;
Added: libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/conjunction.pass.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/conjunction.pass.cpp?rev=287988&view=auto
==============================================================================
--- libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/conjunction.pass.cpp (added)
+++ libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/conjunction.pass.cpp Sat Nov 26 12:45:03 2016
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+// <experimental/type_traits>
+
+// template<class... B> struct conjunction; // C++17
+// template<class... B>
+// constexpr bool conjunction_v = conjunction<B...>::value; // C++17
+
+#include <experimental/type_traits>
+#include <cassert>
+
+namespace ex = std::experimental;
+
+struct True { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+int main()
+{
+ static_assert ( ex::conjunction<>::value, "" );
+ static_assert ( ex::conjunction<std::true_type >::value, "" );
+ static_assert (!ex::conjunction<std::false_type>::value, "" );
+
+ static_assert ( ex::conjunction_v<>, "" );
+ static_assert ( ex::conjunction_v<std::true_type >, "" );
+ static_assert (!ex::conjunction_v<std::false_type>, "" );
+
+ static_assert ( ex::conjunction<std::true_type, std::true_type >::value, "" );
+ static_assert (!ex::conjunction<std::true_type, std::false_type>::value, "" );
+ static_assert (!ex::conjunction<std::false_type, std::true_type >::value, "" );
+ static_assert (!ex::conjunction<std::false_type, std::false_type>::value, "" );
+
+ static_assert ( ex::conjunction_v<std::true_type, std::true_type >, "" );
+ static_assert (!ex::conjunction_v<std::true_type, std::false_type>, "" );
+ static_assert (!ex::conjunction_v<std::false_type, std::true_type >, "" );
+ static_assert (!ex::conjunction_v<std::false_type, std::false_type>, "" );
+
+ static_assert ( ex::conjunction<std::true_type, std::true_type, std::true_type >::value, "" );
+ static_assert (!ex::conjunction<std::true_type, std::false_type, std::true_type >::value, "" );
+ static_assert (!ex::conjunction<std::false_type, std::true_type, std::true_type >::value, "" );
+ static_assert (!ex::conjunction<std::false_type, std::false_type, std::true_type >::value, "" );
+ static_assert (!ex::conjunction<std::true_type, std::true_type, std::false_type>::value, "" );
+ static_assert (!ex::conjunction<std::true_type, std::false_type, std::false_type>::value, "" );
+ static_assert (!ex::conjunction<std::false_type, std::true_type, std::false_type>::value, "" );
+ static_assert (!ex::conjunction<std::false_type, std::false_type, std::false_type>::value, "" );
+
+ static_assert ( ex::conjunction_v<std::true_type, std::true_type, std::true_type >, "" );
+ static_assert (!ex::conjunction_v<std::true_type, std::false_type, std::true_type >, "" );
+ static_assert (!ex::conjunction_v<std::false_type, std::true_type, std::true_type >, "" );
+ static_assert (!ex::conjunction_v<std::false_type, std::false_type, std::true_type >, "" );
+ static_assert (!ex::conjunction_v<std::true_type, std::true_type, std::false_type>, "" );
+ static_assert (!ex::conjunction_v<std::true_type, std::false_type, std::false_type>, "" );
+ static_assert (!ex::conjunction_v<std::false_type, std::true_type, std::false_type>, "" );
+ static_assert (!ex::conjunction_v<std::false_type, std::false_type, std::false_type>, "" );
+
+ static_assert ( ex::conjunction<True >::value, "" );
+ static_assert (!ex::conjunction<False>::value, "" );
+
+ static_assert ( ex::conjunction_v<True >, "" );
+ static_assert (!ex::conjunction_v<False>, "" );
+}
Added: libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/disjunction.pass.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/disjunction.pass.cpp?rev=287988&view=auto
==============================================================================
--- libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/disjunction.pass.cpp (added)
+++ libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/disjunction.pass.cpp Sat Nov 26 12:45:03 2016
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+// <experimental/type_traits>
+
+// template<class... B> struct disjunction;
+// template<class... B>
+// constexpr bool disjunction_v = disjunction<B...>::value;
+
+#include <experimental/type_traits>
+#include <cassert>
+
+namespace ex = std::experimental;
+
+struct True { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+int main()
+{
+ static_assert (!ex::disjunction<>::value, "" );
+ static_assert ( ex::disjunction<std::true_type >::value, "" );
+ static_assert (!ex::disjunction<std::false_type>::value, "" );
+
+ static_assert (!ex::disjunction_v<>, "" );
+ static_assert ( ex::disjunction_v<std::true_type >, "" );
+ static_assert (!ex::disjunction_v<std::false_type>, "" );
+
+ static_assert ( ex::disjunction<std::true_type, std::true_type >::value, "" );
+ static_assert ( ex::disjunction<std::true_type, std::false_type>::value, "" );
+ static_assert ( ex::disjunction<std::false_type, std::true_type >::value, "" );
+ static_assert (!ex::disjunction<std::false_type, std::false_type>::value, "" );
+
+ static_assert ( ex::disjunction_v<std::true_type, std::true_type >, "" );
+ static_assert ( ex::disjunction_v<std::true_type, std::false_type>, "" );
+ static_assert ( ex::disjunction_v<std::false_type, std::true_type >, "" );
+ static_assert (!ex::disjunction_v<std::false_type, std::false_type>, "" );
+
+ static_assert ( ex::disjunction<std::true_type, std::true_type, std::true_type >::value, "" );
+ static_assert ( ex::disjunction<std::true_type, std::false_type, std::true_type >::value, "" );
+ static_assert ( ex::disjunction<std::false_type, std::true_type, std::true_type >::value, "" );
+ static_assert ( ex::disjunction<std::false_type, std::false_type, std::true_type >::value, "" );
+ static_assert ( ex::disjunction<std::true_type, std::true_type, std::false_type>::value, "" );
+ static_assert ( ex::disjunction<std::true_type, std::false_type, std::false_type>::value, "" );
+ static_assert ( ex::disjunction<std::false_type, std::true_type, std::false_type>::value, "" );
+ static_assert (!ex::disjunction<std::false_type, std::false_type, std::false_type>::value, "" );
+
+ static_assert ( ex::disjunction_v<std::true_type, std::true_type, std::true_type >, "" );
+ static_assert ( ex::disjunction_v<std::true_type, std::false_type, std::true_type >, "" );
+ static_assert ( ex::disjunction_v<std::false_type, std::true_type, std::true_type >, "" );
+ static_assert ( ex::disjunction_v<std::false_type, std::false_type, std::true_type >, "" );
+ static_assert ( ex::disjunction_v<std::true_type, std::true_type, std::false_type>, "" );
+ static_assert ( ex::disjunction_v<std::true_type, std::false_type, std::false_type>, "" );
+ static_assert ( ex::disjunction_v<std::false_type, std::true_type, std::false_type>, "" );
+ static_assert (!ex::disjunction_v<std::false_type, std::false_type, std::false_type>, "" );
+
+ static_assert ( ex::disjunction<True >::value, "" );
+ static_assert (!ex::disjunction<False>::value, "" );
+
+ static_assert ( ex::disjunction_v<True >, "" );
+ static_assert (!ex::disjunction_v<False>, "" );
+}
Added: libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/negation.pass.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/negation.pass.cpp?rev=287988&view=auto
==============================================================================
--- libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/negation.pass.cpp (added)
+++ libcxx/trunk/test/std/experimental/utilities/meta/meta.logical/negation.pass.cpp Sat Nov 26 12:45:03 2016
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+// <experimental/type_traits>
+
+// template<class B> struct negation;
+// template<class B>
+// constexpr bool negation_v = negation<B>::value;
+
+#include <experimental/type_traits>
+#include <cassert>
+
+namespace ex = std::experimental;
+
+struct True { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+int main()
+{
+ static_assert (!ex::negation<std::true_type >::value, "" );
+ static_assert ( ex::negation<std::false_type>::value, "" );
+
+ static_assert (!ex::negation_v<std::true_type >, "" );
+ static_assert ( ex::negation_v<std::false_type>, "" );
+
+ static_assert (!ex::negation<True >::value, "" );
+ static_assert ( ex::negation<False>::value, "" );
+
+ static_assert (!ex::negation_v<True >, "" );
+ static_assert ( ex::negation_v<False>, "" );
+
+ static_assert ( ex::negation<ex::negation<std::true_type >>::value, "" );
+ static_assert (!ex::negation<ex::negation<std::false_type>>::value, "" );
+}
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