agtest/gen.py

import textwrap
import os
from lark import Lark

from agast import Parser, Interface

p = Lark(open("grammar.lark").read(), parser="lalr", transformer=Parser())

if __name__ == "__main__":
	with open("arith.ag") as f:
		data = f.read()

	t = p.parse(data)
	print(t)

	if not os.path.exists("gen"):
		os.makedirs("gen")
	with open("gen/arith.py", "w") as f:
		f.write(textwrap.dedent("""
			from typing import Generic, TypeVar
			T = TypeVar('T')
			class Thunk(Generic[T]):
				pass
		"""))