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#!/usr/bin/python
import sys
import re
import io
# --------------------------------------------------------------------------------------------
# globals
# --------------------------------------------------------------------------------------------
definitionSet = set() # set of tuple(return_type, name_and_params)
definitionToSourceLocationMap = dict()
calledFromDict = dict()
calledFromOutsideSet = set()
largeFunctionSet = set() # set of tuple(return_type, name_and_params)
addressOfSet = set() # set of tuple(return_type, name_and_params)
# 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)
# --------------------------------------------------------------------------------------------
# primary input loop
# --------------------------------------------------------------------------------------------
with io.open("loplugin.expandablemethods.log", "rb", buffering=1024*1024) as txt:
for line in txt:
tokens = line.strip().split("\t")
if tokens[0] == "definition:":
access = tokens[1]
returnType = tokens[2]
nameAndParams = tokens[3]
sourceLocation = tokens[4]
funcInfo = (normalizeTypeParams(returnType), normalizeTypeParams(nameAndParams))
definitionSet.add(funcInfo)
definitionToSourceLocationMap[funcInfo] = sourceLocation
elif tokens[0] == "calledFrom:":
calleeLocation = tokens[1]
returnType = tokens[2]
nameAndParams = tokens[3]
funcInfo = (normalizeTypeParams(returnType), normalizeTypeParams(nameAndParams))
if not funcInfo in calledFromDict:
calledFromDict[funcInfo] = set()
calledFromDict[funcInfo].add(calleeLocation)
elif tokens[0] == "outside:":
returnType = tokens[1]
nameAndParams = tokens[2]
calledFromOutsideSet.add((normalizeTypeParams(returnType), normalizeTypeParams(nameAndParams)))
elif tokens[0] == "large:":
returnType = tokens[1]
nameAndParams = tokens[2]
largeFunctionSet.add((normalizeTypeParams(returnType), normalizeTypeParams(nameAndParams)))
elif tokens[0] == "addrof:":
returnType = tokens[1]
nameAndParams = tokens[2]
addressOfSet.add((normalizeTypeParams(returnType), normalizeTypeParams(nameAndParams)))
else:
print( "unknown line: " + line)
# Invert the definitionToSourceLocationMap.
# If we see more than one method at the same sourceLocation, it's being autogenerated as part of a template
# and we should just ignore it.
sourceLocationToDefinitionMap = {}
for k, v in definitionToSourceLocationMap.iteritems():
sourceLocationToDefinitionMap[v] = sourceLocationToDefinitionMap.get(v, [])
sourceLocationToDefinitionMap[v].append(k)
for k, definitions in sourceLocationToDefinitionMap.iteritems():
if len(definitions) > 1:
for d in definitions:
definitionSet.remove(d)
def isOtherConstness( d, callSet ):
method = d[0] + " " + d[1]
# if this method is const, and there is a non-const variant of it, and the non-const variant is in use, then leave it alone
if d[0].startswith("const ") and d[1].endswith(" const"):
if ((d[0][6:],d[1][:-6]) in callSet):
return True
elif method.endswith(" const"):
method2 = method[:len(method)-6] # strip off " const"
if ((d[0],method2) in callSet):
return True
if method.endswith(" const") and ("::iterator" in method):
method2 = method[:len(method)-6] # strip off " const"
method2 = method2.replace("::const_iterator", "::iterator")
if ((d[0],method2) in callSet):
return True
# if this method is non-const, and there is a const variant of it, and the const variant is in use, then leave it alone
if (not method.endswith(" const")) and ((d[0],"const " + method + " const") in callSet):
return True
if (not method.endswith(" const")) and ("::iterator" in method):
method2 = method.replace("::iterator", "::const_iterator") + " const"
if ((d[0],method2) in callSet):
return True
return False
# sort the results using a "natural order" so sequences like [item1,item2,item10] sort nicely
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)]
def sort_set_by_natural_key(s):
return sorted(s, key=lambda v: natural_sort_key(v[1]))
# --------------------------------------------------------------------------------------------
# Methods that are only called from inside their own class, and are only called from one spot
# --------------------------------------------------------------------------------------------
tmp4set = set()
for d in definitionSet:
if d in calledFromOutsideSet:
continue
if isOtherConstness(d, calledFromOutsideSet):
continue
if d not in definitionToSourceLocationMap:
print("warning, method has no location: " + d[0] + " " + d[1])
continue
# ignore external code
if definitionToSourceLocationMap[d].startswith("external/"):
continue
# ignore constructors, calledFromOutsideSet does not provide accurate info for them
tokens = d[1].split("(")[0].split("::")
if len(tokens)>1 and tokens[-2] == tokens[-1]:
continue
# ignore large methods, which make the code clearer by being out of line
if d in largeFunctionSet:
continue
# ignore methods whose address we take
if d in addressOfSet:
continue
# ignore unused methods, leave them to the dedicated analysis
if d not in calledFromDict:
continue
# ignore methods called from more than one site
if len(calledFromDict[d]) > 1:
continue
method = d[0] + " " + d[1]
tmp4set.add((method, definitionToSourceLocationMap[d]))
# print output, sorted by name and line number
with open("loplugin.expandablemethods.report", "wt") as f:
for t in sort_set_by_natural_key(tmp4set):
f.write(t[1] + "\n")
f.write(" " + t[0] + "\n")
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