mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-16 23:06:34 +00:00
d6e714b10e
Since we don't generate a full dependency graph of headers, we can greatly simplify the script that parses the result of --trace-includes. At the same time, we also unify the mechanism for detecting whether a header is a public/C compat/internal/etc header with the existing mechanism in header_information.py. As a drive-by this fixes the headers_in_modulemap.sh.py test which had been disabled by mistake because it used its own way of determining the list of libc++ headers. By consistently using header_information.py to get that information, problems like this shouldn't happen anymore. This should also unblock #110303, which was blocked because of a brittle implementation of the transitive includes check which broke when the repository was cloned at a path like /path/__something/more.
96 lines
3.1 KiB
Python
96 lines
3.1 KiB
Python
# ===----------------------------------------------------------------------===##
|
||
#
|
||
# 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
|
||
#
|
||
# ===----------------------------------------------------------------------===##
|
||
|
||
import os.path
|
||
import sys
|
||
|
||
from libcxx.header_information import module_c_headers, module_headers, header_restrictions, headers_not_available, libcxx_root
|
||
|
||
|
||
def write_file(module):
|
||
with open(libcxx_root / "modules" / f"{module}.cppm.in", "w") as module_cpp_in:
|
||
module_cpp_in.write(
|
||
"""\
|
||
// -*- 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
|
||
//
|
||
//===----------------------------------------------------------------------===//
|
||
|
||
// WARNING, this entire header is generated by
|
||
// utils/generate_libcxx_cppm_in.py
|
||
// DO NOT MODIFY!
|
||
|
||
module;
|
||
|
||
#include <__config>
|
||
|
||
// The headers of Table 24: C++ library headers [tab:headers.cpp]
|
||
// and the headers of Table 25: C++ headers for C library facilities [tab:headers.cpp.c]
|
||
"""
|
||
)
|
||
for header in sorted(module_headers if module == "std" else module_c_headers):
|
||
if header in header_restrictions:
|
||
module_cpp_in.write(
|
||
f"""\
|
||
#if {header_restrictions[header]}
|
||
# include <{header}>
|
||
#endif
|
||
"""
|
||
)
|
||
else:
|
||
module_cpp_in.write(f"#include <{header}>\n")
|
||
|
||
module_cpp_in.write(
|
||
"""
|
||
// *** Headers not yet available ***
|
||
//
|
||
// This validation is mainly to catch when a new header is added but adding the
|
||
// corresponding .inc file is forgotten. However, the check based on __has_include
|
||
// alone doesn't work on Windows because the Windows SDK is on the include path,
|
||
// and that means the MSVC STL headers can be found as well, tricking __has_include
|
||
// into thinking that libc++ provides the header.
|
||
//
|
||
#ifndef _WIN32
|
||
"""
|
||
)
|
||
for header in sorted(headers_not_available):
|
||
module_cpp_in.write(
|
||
f"""\
|
||
# if __has_include(<{header}>)
|
||
# error "please update the header information for <{header}> in headers_not_available in utils/libcxx/header_information.py"
|
||
# endif // __has_include(<{header}>)
|
||
"""
|
||
)
|
||
|
||
module_cpp_in.write(
|
||
f"""#endif // _WIN32
|
||
|
||
export module {module};
|
||
{'export import std;' if module == 'std.compat' else ''}
|
||
|
||
{'@LIBCXX_MODULE_STD_INCLUDE_SOURCES@' if module == 'std' else ''}
|
||
{'@LIBCXX_MODULE_STD_COMPAT_INCLUDE_SOURCES@' if module == 'std.compat' else ''}"""
|
||
)
|
||
|
||
|
||
if __name__ == "__main__":
|
||
if len(sys.argv) != 2 or (sys.argv[1] != "std" and sys.argv[1] != "std.compat"):
|
||
sys.stderr.write(
|
||
f"""\
|
||
Usage:
|
||
{os.path.basename(__file__)} (std|std.compat)
|
||
"""
|
||
)
|
||
sys.exit(1)
|
||
|
||
write_file(sys.argv[1])
|