ref: ef17043327d999101009f85aae72f77399db15ac
dir: /sys/src/cmd/python/Doc/tools/cmpcsyms/
#! /usr/bin/env python
from __future__ import with_statement
import errno
import os
import re
import sys
import string
if __name__ == "__main__":
_base = sys.argv[0]
else:
_base = __file__
_script_home = os.path.abspath(os.path.dirname(_base))
srcdir = os.path.dirname(os.path.dirname(_script_home))
EXCLUDES = ["bitset.h", "cStringIO.h", "graminit.h", "grammar.h",
"longintrepr.h", "metagrammar.h",
"node.h", "opcode.h", "osdefs.h", "pgenheaders.h",
"py_curses.h", "parsetok.h", "symtable.h", "token.h"]
def list_headers():
"""Return a list of headers."""
incdir = os.path.join(srcdir, "Include")
return [os.path.join(incdir, fn) for fn in os.listdir(incdir)
if fn.endswith(".h") and fn not in EXCLUDES]
def matcher(pattern):
return re.compile(pattern).search
MATCHERS = [
# XXX this should also deal with ctypedesc, cvardesc and cmemberdesc
matcher(r"\\begin\{cfuncdesc\}\{(?P<result>[^}]*)\}\{(?P<sym>[^}]*)\}{(?P<params>[^}]*)\}"),
matcher(r"\\cfuncline\{(?P<result>[^})]*)\}\{(?P<sym>[^}]*)\}{(?P<params>[^}]*)\}"),
]
def list_documented_items():
"""Return a list of everything that's already documented."""
apidir = os.path.join(srcdir, "Doc", "api")
files = [fn for fn in os.listdir(apidir) if fn.endswith(".tex")]
L = []
for fn in files:
fullname = os.path.join(apidir, fn)
data = open(fullname).read()
for matcher in MATCHERS:
pos = 0
while 1:
m = matcher(data, pos)
if not m: break
pos = m.end()
sym = m.group("sym")
result = m.group("result")
params = m.group("params")
# replace all whitespace with a single one
params = " ".join(params.split())
L.append((sym, result, params, fn))
return L
def normalize_type(t):
t = t.strip()
s = t.rfind("*")
if s != -1:
# strip everything after the pointer name
t = t[:s+1]
# Drop the variable name
s = t.split()
typenames = 1
if len(s)>1 and s[0]=='unsigned' and s[1]=='int':
typenames = 2
if len(s) > typenames and s[-1][0] in string.letters:
del s[-1]
if not s:
print "XXX", t
return ""
# Drop register
if s[0] == "register":
del s[0]
# discard all spaces
return ''.join(s)
def compare_type(t1, t2):
t1 = normalize_type(t1)
t2 = normalize_type(t2)
if t1 == r'\moreargs' and t2 == '...':
return False
if t1 != t2:
#print "different:", t1, t2
return False
return True
def compare_types(ret, params, hret, hparams):
if not compare_type(ret, hret):
return False
params = params.split(",")
hparams = hparams.split(",")
if not params and hparams == ['void']:
return True
if not hparams and params == ['void']:
return True
if len(params) != len(hparams):
return False
for p1, p2 in zip(params, hparams):
if not compare_type(p1, p2):
return False
return True
def main():
headers = list_headers()
documented = list_documented_items()
lines = []
for h in headers:
data = open(h).read()
data, n = re.subn(r"PyAPI_FUNC\(([^)]*)\)", r"\1", data)
name = os.path.basename(h)
with open(name, "w") as f:
f.write(data)
cmd = ("ctags -f - --file-scope=no --c-kinds=p --fields=S "
"-Istaticforward -Istatichere=static " + name)
with os.popen(cmd) as f:
lines.extend(f.readlines())
os.unlink(name)
L = {}
prevsym = None
for line in lines:
if not line:
break
sym, filename, signature = line.split(None, 2)
if sym == prevsym:
continue
expr = "\^(.*)%s" % sym
m = re.search(expr, signature)
if not m:
print "Could not split",signature, "using",expr
rettype = m.group(1).strip()
m = re.search("signature:\(([^)]*)\)", signature)
if not m:
print "Could not get signature from", signature
params = m.group(1)
L[sym] = (rettype, params)
for sym, ret, params, fn in documented:
if sym not in L:
print "No declaration for '%s'" % sym
continue
hret, hparams = L[sym]
if not compare_types(ret, params, hret, hparams):
print "Declaration error for %s (%s):" % (sym, fn)
print ret+": "+params
print hret+": "+hparams
if __name__ == "__main__":
main()