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