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#!/usr/bin/python2
import sys
import re
import io
callDict = dict() # callInfo tuple -> callValue
definitionToSourceLocationMap = dict()
paramSet = set() # paraminfo tuple
# clang does not always use exactly the same numbers in the type-parameter vars it generates
# so I need to substitute them to ensure we can match correctly.
normalizeTypeParamsRegex = re.compile(r"type-parameter-\d+-\d+")
def normalizeTypeParams( line ):
return normalizeTypeParamsRegex.sub("type-parameter-?-?", line)
# reading as binary (since we known it is pure ascii) is much faster than reading as unicode
with io.open("workdir/loplugin.virtualdead.log", "rb", buffering=1024*1024) as txt:
for line in txt:
try:
tokens = line.strip().split("\t")
if tokens[0] == "virtual:":
nameAndParams = normalizeTypeParams(tokens[1])
sourceLocation = tokens[2]
returnValue = tokens[3]
callInfo = (nameAndParams, sourceLocation)
if not callInfo in callDict:
callDict[callInfo] = set()
callDict[callInfo].add(returnValue)
definitionToSourceLocationMap[nameAndParams] = sourceLocation
elif tokens[0] == "param:":
name = normalizeTypeParams(tokens[1])
if len(tokens)>2:
bitfield = tokens[2]
paramSet.add((name,bitfield))
else:
print( "unknown line: " + line)
except IndexError:
print "problem with line " + line.strip()
raise
tmp1list = list()
for callInfo, callValues in callDict.iteritems():
nameAndParams = callInfo[1]
if len(callValues) != 1:
continue
callValue = next(iter(callValues))
if "unknown-stmt" in callValue:
continue
if "unknown2" in callValue:
continue
if "unknown3" in callValue:
continue
if "unknown4" in callValue:
continue
if "pure" in callValue:
continue
srcloc = callInfo[1]
if srcloc.startswith("workdir/"): continue
# ignore Qt stuff
if srcloc.startswith("Gui/"): continue
if srcloc.startswith("Widgets/"): continue
if srcloc.startswith("Core/"): continue
functionSig = callInfo[0]
tmp1list.append((srcloc, functionSig, callValue))
def merge_bitfield(a, b):
if len(a) == 0: return b
ret = ""
for i, c in enumerate(b):
if c == "1" or a[i] == "1":
ret += "1"
else:
ret += "0"
return ret;
tmp2dict = dict()
tmp2list = list()
for paramInfo in paramSet:
name = paramInfo[0]
bitfield = paramInfo[1]
if re.match( r"\w+ com::", name): continue
if re.match( r"\w+ ooo::vba::", name): continue
if re.match( r"\w+ orcus::", name): continue
if re.match( r"\w+ std::", name): continue
if not name in tmp2dict:
tmp2dict[name] = bitfield
else:
tmp2dict[name] = merge_bitfield(tmp2dict[name], bitfield)
for name, bitfield in tmp2dict.iteritems():
srcloc = definitionToSourceLocationMap[name]
# ignore Qt stuff
if srcloc.startswith("Gui/"): continue
if srcloc.startswith("Widgets/"): continue
if srcloc.startswith("Core/"): continue
# ignore external stuff
if srcloc.startswith("workdir/"): continue
# referenced by generated code in workdir/
if srcloc.startswith("writerfilter/source/ooxml/OOXMLFactory.hxx"): continue
if "0" in bitfield:
tmp2list.append((srcloc, name, bitfield))
# sort results by filename:lineno
def natural_sort_key(s, _nsre=re.compile('([0-9]+)')):
return [int(text) if text.isdigit() else text.lower()
for text in re.split(_nsre, s)]
tmp1list.sort(key=lambda v: natural_sort_key(v[0]))
tmp2list.sort(key=lambda v: natural_sort_key(v[0]))
# print out the results
with open("compilerplugins/clang/virtualdead.results", "wt") as f:
for v in tmp1list:
f.write(v[0] + "\n")
f.write(" " + v[1] + "\n")
f.write(" " + v[2] + "\n")
with open("compilerplugins/clang/virtualdead.unusedparams.results", "wt") as f:
for v in tmp2list:
f.write(v[0] + "\n")
f.write(" " + v[1] + "\n")
f.write(" " + v[2] + "\n")
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