def create_symbols(lines):
global symbols
rules = make_rules(lines)
for rule in rules:
name = rule[1:-1]
symbol = Symbol(name)
symbols.append(symbol)
for rule in rules:
name = rule[1:-1]
symbol = get_symbol(name)
if "regex" in rules[rule]:
symbol.regex = extract_regex(rules[rule])
symbol.is_regex = True
else:
prods = make_prods(rules[rule])
symbol.prods = prods