cppcheck/addons/findcasts.py

#!/usr/bin/env python3
#
# Locate casts in the code
#

import cppcheckdata
import sys

for arg in sys.argv[1:]:
    if arg.startswith('-'):
        continue

    print('Checking %s...' % arg)
    data = cppcheckdata.CppcheckData(arg)

    for cfg in data.iterconfigurations():
        print('Checking %s, config %s...' % (arg, cfg.name))
        for token in cfg.tokenlist:
            if token.str != '(' or not token.astOperand1 or token.astOperand2:
                continue

            # Is it a lambda?
            if token.astOperand1.str == '{':
                continue

            # we probably have a cast.. if there is something inside the parentheses
            # there is a cast. Otherwise this is a function call.
            typetok = token.next
            if not typetok.isName:
                continue

            # cast number => skip output
            if token.astOperand1.isNumber:
                continue

            # void cast => often used to suppress compiler warnings
            if typetok.str == 'void':
                continue

            cppcheckdata.reportError(token, 'information', 'found a cast', 'findcasts', 'cast')