text: # Copyright (c) 2013, Laurent Peuch <cortex@worlddomination.be>
  #
  # All rights reserved.
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are met:
  #
  # * Redistributions of source code must retain the above copyright
  #   notice, this list of conditions and the following disclaimer.
  # * Redistributions in binary form must reproduce the above copyright
  #   notice, this list of conditions and the following disclaimer in the
  #   documentation and/or other materials provided with the distribution.
  # * Neither the name of the University of California, Berkeley nor the
  #   names of its contributors may be used to endorse or promote products
  #   derived from this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
  # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  # DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
  # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  from _ast import AST
  from ast import parse
  
  
  def ast2json(node):
      assert isinstance(node, AST)
      to_return = {}
      to_return['_type'] = node.__class__.__name__
      for attr in dir(node):
          if attr.startswith("_"):
              continue
          to_return[attr] = get_value(getattr(node, attr))
  
      return to_return
  
  
  def str2json(string):
      return ast2json(parse(string))
  
  
  def get_value(attr_value):
      if attr_value is None:
          return attr_value
      if isinstance(attr_value, (int, basestring, float, long, complex, bool)):
          return attr_value
      if isinstance(attr_value, list):
          return [get_value(x) for x in attr_value]
      if isinstance(attr_value, AST):
          return ast2json(attr_value)
      else:
          raise Exception("unknow case for '%s' of type '%s'" % (attr_value, type(attr_value)))
  
  
  if __name__ == '__main__':
      import json
      print json.dumps(ast2json(parse(open(__file__, "r").read())), indent=4)
  