def eat(self):
if self._tok_idx >= len(self.tokens):
return Token.fromEOF()
else:
tok = self.tokens[self._tok_idx]
self._tok_idx += 1
return tok
def peek(self, lookahead=0):
if len(self.tokens) <= self._tok_idx + lookahead:
return Token.fromEOF()
return self.tokens[self._tok_idx + lookahead]