Pyparsing c prototype to golang

parser.py

from pyparsing import *


class Function:
    def __init__(self, tokens):
        self.type = tokens[0]
        self.name = tokens[1]
        self.args = tokens[2] if len(tokens) > 2 else ""

    def __repr__(self):
        return "func {name}({args}) {type}".format(
            name=self.name,
            args=self.args,
            type=self.type
        )

class Arg:
    def __init__(self, tokens):
        self.type = tokens[0]
        self.name = tokens[1]

    def __repr__(self):
        return "{} {}".format(self.name, self.type)

TYPES = Word("int") | Word("float") | Word("string")
ID = Word(alphas, alphanums)

ARG = TYPES + ID
ARG.setParseAction(Arg)


LANG = TYPES + ID + Suppress('(') + Optional(delimitedList(ARG)) + Suppress(');')
LANG.setParseAction(Function)


l = [
        "int main();",
        "int main(int a);",
        "int main(int a, int b);",
        "int main(int xax, float var17);",
        "int main18(int xax, float var17);"
]


for i in l:
    res = LANG.parseString(i)[0]
    print("{} -> {}".format(i, res))