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b9a2658a3e
This patch implements the forwarding to frozen C++03 headers as discussed in https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc. In the RFC, we initially proposed selecting the right headers from the Clang driver, however consensus seemed to steer towards handling this in the library itself. This patch implements that direction. At a high level, the changes basically amount to making each public header look like this: ``` // inside <vector> #ifdef _LIBCPP_CXX03_LANG # include <__cxx03/vector> #else // normal <vector> content #endif ``` In most cases, public headers are simple umbrella headers so there isn't much code in the #else branch. In other cases, the #else branch contains the actual implementation of the header.
199 lines
3.6 KiB
C++
199 lines
3.6 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_CSTDINT
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#define _LIBCPP_CSTDINT
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/*
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cstdint synopsis
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Macros:
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INT8_MIN
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INT16_MIN
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INT32_MIN
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INT64_MIN
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INT8_MAX
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INT16_MAX
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INT32_MAX
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INT64_MAX
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UINT8_MAX
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UINT16_MAX
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UINT32_MAX
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UINT64_MAX
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INT_LEAST8_MIN
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INT_LEAST16_MIN
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INT_LEAST32_MIN
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INT_LEAST64_MIN
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INT_LEAST8_MAX
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INT_LEAST16_MAX
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INT_LEAST32_MAX
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INT_LEAST64_MAX
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UINT_LEAST8_MAX
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UINT_LEAST16_MAX
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UINT_LEAST32_MAX
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UINT_LEAST64_MAX
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INT_FAST8_MIN
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INT_FAST16_MIN
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INT_FAST32_MIN
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INT_FAST64_MIN
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INT_FAST8_MAX
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INT_FAST16_MAX
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INT_FAST32_MAX
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INT_FAST64_MAX
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UINT_FAST8_MAX
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UINT_FAST16_MAX
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UINT_FAST32_MAX
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UINT_FAST64_MAX
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INTPTR_MIN
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INTPTR_MAX
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UINTPTR_MAX
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INTMAX_MIN
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INTMAX_MAX
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UINTMAX_MAX
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PTRDIFF_MIN
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PTRDIFF_MAX
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SIG_ATOMIC_MIN
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SIG_ATOMIC_MAX
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SIZE_MAX
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WCHAR_MIN
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WCHAR_MAX
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WINT_MIN
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WINT_MAX
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INT8_C(value)
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INT16_C(value)
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INT32_C(value)
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INT64_C(value)
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UINT8_C(value)
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UINT16_C(value)
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UINT32_C(value)
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UINT64_C(value)
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INTMAX_C(value)
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UINTMAX_C(value)
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namespace std
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{
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Types:
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int8_t
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int16_t
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int32_t
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int64_t
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uint8_t
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uint16_t
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uint32_t
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uint64_t
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int_least8_t
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int_least16_t
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int_least32_t
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int_least64_t
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uint_least8_t
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uint_least16_t
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uint_least32_t
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uint_least64_t
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int_fast8_t
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int_fast16_t
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int_fast32_t
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int_fast64_t
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uint_fast8_t
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uint_fast16_t
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uint_fast32_t
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uint_fast64_t
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intptr_t
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uintptr_t
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intmax_t
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uintmax_t
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} // std
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*/
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#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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# include <__cxx03/cstdint>
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#else
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# include <__config>
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# if __has_include(<stdint.h>)
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# include <stdint.h>
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# endif
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# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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# endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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using ::int8_t _LIBCPP_USING_IF_EXISTS;
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using ::int16_t _LIBCPP_USING_IF_EXISTS;
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using ::int32_t _LIBCPP_USING_IF_EXISTS;
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using ::int64_t _LIBCPP_USING_IF_EXISTS;
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using ::uint8_t _LIBCPP_USING_IF_EXISTS;
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using ::uint16_t _LIBCPP_USING_IF_EXISTS;
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using ::uint32_t _LIBCPP_USING_IF_EXISTS;
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using ::uint64_t _LIBCPP_USING_IF_EXISTS;
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using ::int_least8_t _LIBCPP_USING_IF_EXISTS;
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using ::int_least16_t _LIBCPP_USING_IF_EXISTS;
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using ::int_least32_t _LIBCPP_USING_IF_EXISTS;
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using ::int_least64_t _LIBCPP_USING_IF_EXISTS;
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using ::uint_least8_t _LIBCPP_USING_IF_EXISTS;
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using ::uint_least16_t _LIBCPP_USING_IF_EXISTS;
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using ::uint_least32_t _LIBCPP_USING_IF_EXISTS;
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using ::uint_least64_t _LIBCPP_USING_IF_EXISTS;
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using ::int_fast8_t _LIBCPP_USING_IF_EXISTS;
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using ::int_fast16_t _LIBCPP_USING_IF_EXISTS;
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using ::int_fast32_t _LIBCPP_USING_IF_EXISTS;
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using ::int_fast64_t _LIBCPP_USING_IF_EXISTS;
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using ::uint_fast8_t _LIBCPP_USING_IF_EXISTS;
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using ::uint_fast16_t _LIBCPP_USING_IF_EXISTS;
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using ::uint_fast32_t _LIBCPP_USING_IF_EXISTS;
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using ::uint_fast64_t _LIBCPP_USING_IF_EXISTS;
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using ::intptr_t _LIBCPP_USING_IF_EXISTS;
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using ::uintptr_t _LIBCPP_USING_IF_EXISTS;
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using ::intmax_t _LIBCPP_USING_IF_EXISTS;
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using ::uintmax_t _LIBCPP_USING_IF_EXISTS;
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_LIBCPP_END_NAMESPACE_STD
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#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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#endif // _LIBCPP_CSTDINT
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