class TokenType(object):
    END = ''
    ILLEGAL = 'ILLEGAL'
    # Operators
    PLUS = '+'
    MINUS = '-'
    SLASH = '/'
    AT = '@'
    # Identifiers
    NUMBER = 'NUMBER'
    MODIFIER = 'MODIFIER'
    # keywords
    NOW = 'NOW'


class Token(object):
    def __init__(self, tok_type, tok_literal):
        self.token_type = tok_type
        self.token_literal = tok_literal
