| #----------------------------------------------------------------- | |
| # pycparser: func_defs.py | |
| # | |
| # Using pycparser for printing out all the functions defined in a | |
| # C file. | |
| # | |
| # This is a simple example of traversing the AST generated by | |
| # pycparser. Call it from the root directory of pycparser. | |
| # | |
| # Eli Bendersky [https://eli.thegreenplace.net/] | |
| # License: BSD | |
| #----------------------------------------------------------------- | |
| import sys | |
| # This is not required if you've installed pycparser into | |
| # your site-packages/ with setup.py | |
| sys.path.extend(['.', '..']) | |
| from pycparser import c_ast, parse_file | |
| # A simple visitor for FuncDef nodes that prints the names and | |
| # locations of function definitions. | |
| class FuncDefVisitor(c_ast.NodeVisitor): | |
| def visit_FuncDef(self, node): | |
| print('%s at %s' % (node.decl.name, node.decl.coord)) | |
| def show_func_defs(filename): | |
| # Note that cpp is used. Provide a path to your own cpp or | |
| # make sure one exists in PATH. | |
| ast = parse_file(filename, use_cpp=True, | |
| cpp_args=r'-Iutils/fake_libc_include') | |
| v = FuncDefVisitor() | |
| v.visit(ast) | |
| if __name__ == "__main__": | |
| if len(sys.argv) > 1: | |
| filename = sys.argv[1] | |
| else: | |
| filename = 'examples/c_files/memmgr.c' | |
| show_func_defs(filename) | |