#!/usr/bin/python import sys import re import io definitionSet = set() definitionToSourceLocationMap = dict() callParamSet = dict() # things we need to exclude for reasons like : # - it's a weird template thingy that confuses the plugin exclusionSet = set([ ]) # 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) # The parsing here is designed to avoid grabbing stuff which is mixed in from gbuild. # I have not yet found a way of suppressing the gbuild output. with io.open(sys.argv[1], "rb", buffering=1024*1024) as txt: for line in txt: idx1 = line.find("\t") idx2 = line.find("\t",idx1+1) idx3 = line.find("\t",idx2+1) idx4 = line.find("\t",idx3+1) returnType = line[:idx1] nameAndParams = line[idx1+1:idx2] sourceLocation = line[idx2+1:idx3] paramName = line[idx3+1:idx4] callValue = line[idx4+1:].strip() callInfo = (normalizeTypeParams(returnType), normalizeTypeParams(nameAndParams), paramName) if callInfo in callParamSet: callParamSet[callInfo].add(callValue) else: callParamSet[callInfo] = set([callValue]) definitionToSourceLocationMap[callInfo] = sourceLocation tmp1set = set() for callInfo, callValues in callParamSet.iteritems(): if len(callValues) == 1 and "unknown" not in callValues and ("0" in callValues or "1" in callValues or "nullptr" in callValues): v1 = (" ".join(callInfo)) + " " + (",".join(callValues)) v2 = definitionToSourceLocationMap[callInfo] tmp1set.add((v1,v2)) # sort results by name and line number 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 = sorted(tmp1set, key=lambda v: natural_sort_key(v[1])) # print out the results with open("unused.constantparams", "wt") as f: for t in tmp1list: f.write(t[1] + "\n") f.write(" " + t[0] + "\n")