self.error()
def get_next_token(self): while self.current_char is not None: compiler design book of aa puntambekar pdf 71 2021
def skip_whitespace(self): while self.current_char is not None and self.current_char.isspace(): self.advance() compiler design book of aa puntambekar pdf 71 2021
def advance(self): self.pos += 1 if self.pos > len(self.text) - 1: self.current_char = None else: self.current_char = self.text[self.pos] compiler design book of aa puntambekar pdf 71 2021