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Editing File: /usr/share/doc/python-pycparser-2.14/examples/func_calls.py

#-----------------------------------------------------------------
# pycparser: func_defs.py
#
# Using pycparser for printing out all the calls of some function
# in a C file.
#
# Copyright (C) 2008-2015, Eli Bendersky
# License: BSD
#-----------------------------------------------------------------
from __future__ import print_function
import sys

from pycparser import c_parser, c_ast, parse_file

# A visitor with some state information (the funcname it's
# looking for)
#
class FuncCallVisitor(c_ast.NodeVisitor):
    def __init__(self, funcname):
        self.funcname = funcname

def visit_FuncCall(self, node):
        if node.name.name == self.funcname:
            print('%s called at %s' % (self.funcname, node.name.coord))

def show_func_calls(filename, funcname):
    ast = parse_file(filename, use_cpp=True)
    v = FuncCallVisitor(funcname)
    v.visit(ast)

if __name__ == "__main__":
    if len(sys.argv) > 2:
        filename = sys.argv[1]
        func = sys.argv[2]
    else:
        filename = 'examples/c_files/hash.c'
        func = 'malloc'

show_func_calls(filename, func)

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