1 files changed, 46 insertions, 0 deletions
diff --git a/examples/func_defs.py b/examples/func_defs.py
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+++ b/examples/func_defs.py
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+#-----------------------------------------------------------------
+# 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
+#-----------------------------------------------------------------
+from __future__ import print_function
+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_parser, 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)