abi_type_parser.py

import parsimonious

parser = parsimonious.Grammar(r"""
type = tuple_type / basic_type

tuple_type = "(" type ("," type)* ")"

basic_type = base sub? arrlist?

base = alphas

sub = (digits "x" digits) / digits

arrlist = (const_arr / dynam_arr)+
const_arr = "[" digits "]"
dynam_arr = "[]"

alphas = ~"[a-z]+"
digits = ~"[0-9]+"
""")

uint = parser.parse('uint')
uint256 = parser.parse('uint256')
fixed128x19 = parser.parse('fixed128x19')
tup = parser.parse('(uint,bool,fixed128x19)')