derek.holloway
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100 lines
6.3 KiB
C++
100 lines
6.3 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___CONFIGURATION_NAMESPACE_H
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#define _LIBCPP___CONFIGURATION_NAMESPACE_H
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#include <__config_site>
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#include <__configuration/attributes.h>
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#include <__configuration/diagnostic_suppression.h>
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#include <__configuration/utility.h>
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#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
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# pragma GCC system_header
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#endif
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// Clang modules take a significant compile time hit when pushing and popping diagnostics.
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// Since all the headers are marked as system headers unless _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER is defined, we can
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// simply disable this pushing and popping when _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER isn't defined.
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#ifdef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
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# define _LIBCPP_PUSH_EXTENSION_DIAGNOSTICS \
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_LIBCPP_DIAGNOSTIC_PUSH \
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_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++11-extensions") \
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_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++14-extensions") \
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_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++17-extensions") \
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_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++20-extensions") \
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_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wc++23-extensions") \
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_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wc++14-extensions") \
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_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wc++17-extensions") \
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_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wc++20-extensions") \
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_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wc++23-extensions")
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# define _LIBCPP_POP_EXTENSION_DIAGNOSTICS _LIBCPP_DIAGNOSTIC_POP
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# define _LIBCPP_PUSH_ABI_PRAGMA_DIAGNOSTICS \
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_LIBCPP_DIAGNOSTIC_PUSH _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wpragma-clang-attribute") \
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_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wignored-attributes")
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# define _LIBCPP_POP_ABI_PRAGMA_DIAGNOSTICS _LIBCPP_DIAGNOSTIC_POP
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#else
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# define _LIBCPP_PUSH_EXTENSION_DIAGNOSTICS
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# define _LIBCPP_POP_EXTENSION_DIAGNOSTICS
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# define _LIBCPP_PUSH_ABI_PRAGMA_DIAGNOSTICS
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# define _LIBCPP_POP_ABI_PRAGMA_DIAGNOSTICS
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#endif
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#define _LIBCPP_END_EXPLICIT_ABI_ANNOTATIONS \
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_LIBCPP_PUSH_ABI_PRAGMA_DIAGNOSTICS \
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_Pragma(_LIBCPP_TOSTRING(clang attribute _LibcxxExplicitABIAnnotations.push( \
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__attribute__((__exclude_from_explicit_instantiation__, \
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__visibility__("hidden"), \
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__abi_tag__(_LIBCPP_TOSTRING(_LIBCPP_ODR_SIGNATURE)))), \
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apply_to = function))) _LIBCPP_POP_ABI_PRAGMA_DIAGNOSTICS
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#define _LIBCPP_BEGIN_EXPLICIT_ABI_ANNOTATIONS _Pragma("clang attribute _LibcxxExplicitABIAnnotations.pop")
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// clang-format off
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// The unversioned namespace is used when we want to be ABI compatible with other standard libraries in some way. There
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// are two main categories where that's the case:
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// - Historically, we have made exception types ABI compatible with libstdc++ to allow throwing them between libstdc++
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// and libc++. This is not used anymore for new exception types, since there is no use-case for it anymore.
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// - Types and functions which are used by the compiler are in the unversioned namespace, since the compiler has to know
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// their mangling without the appropriate declaration in some cases.
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// If it's not clear whether using the unversioned namespace is the correct thing to do, it's not. The versioned
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// namespace (_LIBCPP_BEGIN_NAMESPACE_STD) should almost always be used.
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# define _LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD \
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_LIBCPP_PUSH_EXTENSION_DIAGNOSTICS _LIBCPP_END_EXPLICIT_ABI_ANNOTATIONS namespace _LIBCPP_NAMESPACE_VISIBILITY std {
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# define _LIBCPP_END_UNVERSIONED_NAMESPACE_STD } _LIBCPP_BEGIN_EXPLICIT_ABI_ANNOTATIONS _LIBCPP_POP_EXTENSION_DIAGNOSTICS
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# define _LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD inline namespace _LIBCPP_ABI_NAMESPACE {
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# define _LIBCPP_END_NAMESPACE_STD } _LIBCPP_END_UNVERSIONED_NAMESPACE_STD
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// TODO: This should really be in the versioned namespace
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#define _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL _LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD namespace experimental {
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#define _LIBCPP_END_NAMESPACE_EXPERIMENTAL } _LIBCPP_END_UNVERSIONED_NAMESPACE_STD
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#define _LIBCPP_BEGIN_NAMESPACE_LFTS _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL inline namespace fundamentals_v1 {
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#define _LIBCPP_END_NAMESPACE_LFTS } _LIBCPP_END_NAMESPACE_EXPERIMENTAL
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#define _LIBCPP_BEGIN_NAMESPACE_LFTS_V2 _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL inline namespace fundamentals_v2 {
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#define _LIBCPP_END_NAMESPACE_LFTS_V2 } _LIBCPP_END_NAMESPACE_EXPERIMENTAL
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#ifdef _LIBCPP_ABI_NO_FILESYSTEM_INLINE_NAMESPACE
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# define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM _LIBCPP_BEGIN_NAMESPACE_STD namespace filesystem {
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# define _LIBCPP_END_NAMESPACE_FILESYSTEM } _LIBCPP_END_NAMESPACE_STD
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#else
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# define _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM _LIBCPP_BEGIN_NAMESPACE_STD \
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inline namespace __fs { namespace filesystem {
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# define _LIBCPP_END_NAMESPACE_FILESYSTEM }} _LIBCPP_END_NAMESPACE_STD
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#endif
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// clang-format on
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#endif // _LIBCPP___CONFIGURATION_NAMESPACE_H
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