Method expect

Tools/peg_generator/pegen/parser.py:261–273

(self, type: str)

    @memoize
    def expect(self, type: str) -> tokenize.TokenInfo | None:
        tok = self._tokenizer.peek()
        if tok.string == type:
            return self._tokenizer.getnext()
        if type in exact_token_types:
            if tok.type == exact_token_types[type]:
                return self._tokenizer.getnext()
        if type in token.__dict__:
            if tok.type == token.__dict__[type]:
                return self._tokenizer.getnext()
        if tok.type == token.OP and tok.string == type:
            return self._tokenizer.getnext()
        return None

    def expect_forced(self, res: Any, expectation: str) -> tokenize.TokenInfo | None:
        if res is None: