llvm-capstone/libcxx/include/ext/__hash
Nikolas Klauser bd44174547 [libc++] Use -I instead of -isystem to include headers in the test suite
Using -isystem marks the headers as system headers, which means that we
don't actually get all the warnings that we'd normally get if we included
the headers as user headers.

The goal of the test suite is normally to mirror as closely as possible
how users would use the library. Technically, this change goes against
that philosophy, since users should be using `-isystem` (if they ever
need to specify the libc++ path explicitly, which should be a rare
occurence). However, I believe fishing out additional warnings from
the headers provides more value, hence this change. Ideally, we'd be
able to still use `-isystem`, but instruct Clang to still emit warnings
from the libc++ headers (e.g. we could tell Clang to emit warnings in
any file inside `<...>/usr/include/c++/v1`).

Reviewed By: #libc, ldionne, #libc_abi

Spies: Mordante, EricWF, mstorsjo, mgorny, aheejin, arichardson, philnik, jloser, libcxx-commits

Differential Revision: https://reviews.llvm.org/D118616
2022-03-03 13:19:47 +01:00

136 lines
3.2 KiB
C++

// -*- 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 _LIBCPP_EXT_HASH
#define _LIBCPP_EXT_HASH
# pragma GCC system_header
#include <__config>
#include <__string>
#include <cstring>
#include <string>
namespace __gnu_cxx {
template <typename _Tp> struct _LIBCPP_TEMPLATE_VIS hash { };
template <> struct _LIBCPP_TEMPLATE_VIS hash<const char*>
: public std::unary_function<const char*, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(const char *__c) const _NOEXCEPT
{
return std::__do_string_hash(__c, __c + strlen(__c));
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<char *>
: public std::unary_function<char*, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(char *__c) const _NOEXCEPT
{
return std::__do_string_hash<const char *>(__c, __c + strlen(__c));
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<char>
: public std::unary_function<char, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(char __c) const _NOEXCEPT
{
return __c;
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<signed char>
: public std::unary_function<signed char, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(signed char __c) const _NOEXCEPT
{
return __c;
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<unsigned char>
: public std::unary_function<unsigned char, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(unsigned char __c) const _NOEXCEPT
{
return __c;
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<short>
: public std::unary_function<short, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(short __c) const _NOEXCEPT
{
return __c;
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<unsigned short>
: public std::unary_function<unsigned short, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(unsigned short __c) const _NOEXCEPT
{
return __c;
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<int>
: public std::unary_function<int, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(int __c) const _NOEXCEPT
{
return __c;
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<unsigned int>
: public std::unary_function<unsigned int, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(unsigned int __c) const _NOEXCEPT
{
return __c;
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<long>
: public std::unary_function<long, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(long __c) const _NOEXCEPT
{
return __c;
}
};
template <> struct _LIBCPP_TEMPLATE_VIS hash<unsigned long>
: public std::unary_function<unsigned long, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(unsigned long __c) const _NOEXCEPT
{
return __c;
}
};
} // namespace __gnu_cxx
#endif // _LIBCPP_EXT_HASH