#!/usr/bin/env python
import json
import grako

if __name__ == "__main__":
    grammar_ebnf = """
        bracketed = '{' @:( { bracketed }+ | any ) '}' ;
            any = /[.*{}]+?/ ;
    """
    model = grako.genmodel("Bracketed", grammar_ebnf)
    ast=model.parse("{ { a } { b } { { { c } } } }", "bracketed")
    #model.parse(config, "bracketed")
    print(json.dumps(ast, indent=4))