toxcore/other/analysis/check_includes
iphydf 1859d0f44a
cleanup: Ensure we limit the system headers included in .h files.
Most system headers contain functions (e.g. `memcpy` in `string.h`)
which aren't needed in our own header files. For the most part, our own
headers should only include types needed to declare our own types and
functions. We now enforce this so we think twice about which headers we
really need in the .h files.
2022-02-04 20:54:37 +00:00

58 lines
1.5 KiB
Python
Executable File

#!/usr/bin/env python3
import subprocess
import sys
from typing import Tuple
ALLOWLIST: Tuple[str, ...] = (
# system headers
"pthread.h",
"stdarg.h",
"stdbool.h",
"stddef.h",
"stdint.h",
# toxav stuff, maybe not worth abstracting away
"opus.h",
"vpx/vp8cx.h",
"vpx/vp8dx.h",
"vpx/vpx_decoder.h",
"vpx/vpx_encoder.h",
"vpx/vpx_image.h",
)
out = (subprocess.run(
[
"grep", "-R", "^#include <.*>", "other", "toxav", "toxcore",
"toxencryptsave"
],
check=True,
capture_output=True,
).stdout.decode("utf-8").rstrip())
errors = 0
for line in out.split("\n"):
# other/fun can do what it wants.
if "/fun/" in line:
continue
filename, include = line.split(":", 1)
# We only check headers.
if not filename.endswith(".h"):
continue
# ccompat.h can include some things we don't really want elsewhere.
allowlist = ALLOWLIST
if filename == "toxcore/ccompat.h":
allowlist += ("alloca.h", "malloc.h", "stdlib.h")
header = include[include.index("<") + 1:include.index(">")]
if header not in allowlist:
source = filename[:-2] + ".c"
print(
f"{filename}: includes system header <{header}>, which is not allowed in .h files"
)
print(
" " * len(filename) +
f" consider including it in {source} and exporting an abstraction, instead"
)
errors += 1
if errors:
sys.exit(1)