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[libc] Add is_member_pointer_v (#65631)

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Implementation from
https://en.cppreference.com/w/cpp/types/is_member_pointer
This commit is contained in:
Guillaume Chatelet
2023-09-08 09:36:19 +00:00
committed by GitHub
parent d60c47476d
commit eebf8faf3e
3 changed files with 32 additions and 0 deletions
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1
libc/src/__support/CPP/type_traits.h
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@@ -30,6 +30,7 @@
#include "src/__support/CPP/type_traits/is_function.h"
#include "src/__support/CPP/type_traits/is_integral.h"
#include "src/__support/CPP/type_traits/is_lvalue_reference.h"
#include "src/__support/CPP/type_traits/is_member_pointer.h"
#include "src/__support/CPP/type_traits/is_null_pointer.h"
#include "src/__support/CPP/type_traits/is_pointer.h"
#include "src/__support/CPP/type_traits/is_reference.h"

30
libc/src/__support/CPP/type_traits/is_member_pointer.h Normal file
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@@ -0,0 +1,30 @@
//===-- is_member_pointer type_traits ---------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC_SUPPORT_CPP_TYPE_TRAITS_IS_MEMBER_POINTER_H
#define LLVM_LIBC_SRC_SUPPORT_CPP_TYPE_TRAITS_IS_MEMBER_POINTER_H
#include "src/__support/CPP/type_traits/false_type.h"
#include "src/__support/CPP/type_traits/remove_cv.h"
#include "src/__support/CPP/type_traits/true_type.h"
#include "src/__support/macros/attributes.h"
namespace __llvm_libc::cpp {
// is_member_pointer
template <class T> struct is_member_pointer_helper : cpp::false_type {};
template <class T, class U>
struct is_member_pointer_helper<T U::*> : cpp::true_type {};
template <class T>
struct is_member_pointer : is_member_pointer_helper<cpp::remove_cv_t<T>> {};
template <class T>
LIBC_INLINE_VAR constexpr bool is_member_pointer_v =
is_member_pointer<T>::value;
} // namespace __llvm_libc::cpp
#endif // LLVM_LIBC_SRC_SUPPORT_CPP_TYPE_TRAITS_IS_MEMBER_POINTER_H

1
utils/bazel/llvm-project-overlay/libc/BUILD.bazel
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@@ -307,6 +307,7 @@ libc_support_library(
"src/__support/CPP/type_traits/is_function.h",
"src/__support/CPP/type_traits/is_integral.h",
"src/__support/CPP/type_traits/is_lvalue_reference.h",
"src/__support/CPP/type_traits/is_member_pointer.h",
"src/__support/CPP/type_traits/is_null_pointer.h",
"src/__support/CPP/type_traits/is_pointer.h",
"src/__support/CPP/type_traits/is_reference.h",