from sys import stderr

EXIT_CODE_FILE_ERROR = 1
EXIT_CODE_INVALID_TOKEN = 2
EXIT_CODE_SYNTAX_ERROR = 4
EXIT_CODE_EOF = 7

# vim autoindent misbehaves if I type these verbatim in strings
LEFT_BRACE = "{"
RIGHT_BRACE = "}"
LEFT_BRACKET = "["
RIGHT_BRACKET = "]"
LEFT_PAREN = "("
RIGHT_PAREN = ")"

class JackSyntaxError(Exception):
    def __init__(self, msg, token):
        self.message = msg
        self.token = token
        super().__init__(msg)


def print_err(msg):
    print(msg, file=stderr)