libreoffice/compilerplugins/clang/unnecessaryvirtual.py

#!/usr/bin/python

import sys
import io

definitionSet = set()
overridingSet = set()


with io.open("loplugin.unnecessaryvirtual.log", "rb", buffering=1024*1024) as txt:
    for line in txt:
        tokens = line.strip().split("\t")
        if tokens[0] == "definition:":
            clazzName = tokens[1]
            definitionSet.add(clazzName)
        elif tokens[0] == "overriding:":
            clazzName = tokens[1]
            overridingSet.add(clazzName)
            
with open("loplugin.unnecessaryvirtual.report", "wt") as f:
    for clazz in sorted(definitionSet - overridingSet):
        # external code
        if clazz.startswith("std::"): continue
        if clazz.startswith("icu_"): continue
        if clazz.startswith("__cxx"): continue
        # windows-specific stuff
        if clazz.startswith("canvas::"): continue
        if clazz.startswith("psp::PrinterInfoManager"): continue
        # some test magic
        if clazz.startswith("apitest::"): continue
        f.write(clazz + "\n")
    # add an empty line at the end to make it easier for the removevirtuals plugin to mmap() the output file 
    f.write("\n")