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.
276 lines
4.3 KiB
C++
276 lines
4.3 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_CINTTYPES
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#define _LIBCPP_CINTTYPES
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/*
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cinttypes synopsis
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This entire header is C99 / C++0X
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#include <cstdint> // <cinttypes> includes <cstdint>
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Macros:
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PRId8
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PRId16
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PRId32
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PRId64
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PRIdLEAST8
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PRIdLEAST16
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PRIdLEAST32
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PRIdLEAST64
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PRIdFAST8
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PRIdFAST16
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PRIdFAST32
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PRIdFAST64
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PRIdMAX
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PRIdPTR
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PRIi8
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PRIi16
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PRIi32
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PRIi64
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PRIiLEAST8
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PRIiLEAST16
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PRIiLEAST32
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PRIiLEAST64
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PRIiFAST8
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PRIiFAST16
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PRIiFAST32
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PRIiFAST64
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PRIiMAX
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PRIiPTR
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PRIo8
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PRIo16
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PRIo32
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PRIo64
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PRIoLEAST8
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PRIoLEAST16
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PRIoLEAST32
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PRIoLEAST64
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PRIoFAST8
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PRIoFAST16
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PRIoFAST32
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PRIoFAST64
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PRIoMAX
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PRIoPTR
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PRIu8
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PRIu16
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PRIu32
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PRIu64
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PRIuLEAST8
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PRIuLEAST16
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PRIuLEAST32
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PRIuLEAST64
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PRIuFAST8
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PRIuFAST16
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PRIuFAST32
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PRIuFAST64
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PRIuMAX
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PRIuPTR
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PRIx8
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PRIx16
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PRIx32
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PRIx64
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PRIxLEAST8
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PRIxLEAST16
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PRIxLEAST32
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PRIxLEAST64
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PRIxFAST8
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PRIxFAST16
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PRIxFAST32
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PRIxFAST64
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PRIxMAX
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PRIxPTR
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PRIX8
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PRIX16
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PRIX32
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PRIX64
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PRIXLEAST8
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PRIXLEAST16
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PRIXLEAST32
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PRIXLEAST64
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PRIXFAST8
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PRIXFAST16
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PRIXFAST32
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PRIXFAST64
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PRIXMAX
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PRIXPTR
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SCNd8
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SCNd16
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SCNd32
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SCNd64
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SCNdLEAST8
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SCNdLEAST16
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SCNdLEAST32
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SCNdLEAST64
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SCNdFAST8
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SCNdFAST16
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SCNdFAST32
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SCNdFAST64
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SCNdMAX
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SCNdPTR
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SCNi8
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SCNi16
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SCNi32
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SCNi64
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SCNiLEAST8
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SCNiLEAST16
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SCNiLEAST32
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SCNiLEAST64
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SCNiFAST8
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SCNiFAST16
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SCNiFAST32
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SCNiFAST64
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SCNiMAX
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SCNiPTR
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SCNo8
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SCNo16
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SCNo32
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SCNo64
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SCNoLEAST8
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SCNoLEAST16
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SCNoLEAST32
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SCNoLEAST64
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SCNoFAST8
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SCNoFAST16
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SCNoFAST32
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SCNoFAST64
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SCNoMAX
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SCNoPTR
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SCNu8
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SCNu16
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SCNu32
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SCNu64
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SCNuLEAST8
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SCNuLEAST16
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SCNuLEAST32
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SCNuLEAST64
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SCNuFAST8
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SCNuFAST16
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SCNuFAST32
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SCNuFAST64
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SCNuMAX
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SCNuPTR
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SCNx8
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SCNx16
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SCNx32
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SCNx64
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SCNxLEAST8
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SCNxLEAST16
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SCNxLEAST32
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SCNxLEAST64
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SCNxFAST8
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SCNxFAST16
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SCNxFAST32
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SCNxFAST64
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SCNxMAX
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SCNxPTR
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namespace std
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{
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Types:
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imaxdiv_t
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intmax_t imaxabs(intmax_t j);
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imaxdiv_t imaxdiv(intmax_t numer, intmax_t denom);
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intmax_t strtoimax(const char* restrict nptr, char** restrict endptr, int base);
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uintmax_t strtoumax(const char* restrict nptr, char** restrict endptr, int base);
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intmax_t wcstoimax(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base);
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uintmax_t wcstoumax(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base);
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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/cinttypes>
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#else
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# include <__config>
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// standard-mandated includes
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// [cinttypes.syn]
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# include <cstdint>
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# include <inttypes.h>
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# ifndef _LIBCPP_INTTYPES_H
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# error <cinttypes> tried including <inttypes.h> but didn't find libc++'s <inttypes.h> header. \
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This usually means that your header search paths are not configured properly. \
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The header search paths should contain the C++ Standard Library headers before \
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any C Standard Library, and you are probably using compiler flags that make that \
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not be the case.
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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 ::imaxdiv_t _LIBCPP_USING_IF_EXISTS;
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using ::imaxabs _LIBCPP_USING_IF_EXISTS;
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using ::imaxdiv _LIBCPP_USING_IF_EXISTS;
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using ::strtoimax _LIBCPP_USING_IF_EXISTS;
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using ::strtoumax _LIBCPP_USING_IF_EXISTS;
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using ::wcstoimax _LIBCPP_USING_IF_EXISTS;
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using ::wcstoumax _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_CINTTYPES
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