instance Show Terminal where
    show (LiteralDecimal x) = show x
    show (LiteralInteiro x) = show x
    show (LiteralCaracter x) =  show x
    show (LiteralString x) = show x
    show (LiteralBooleano x) = show x

instance Show Tipo where
    show (TipoFloat) = "float"
    show (TipoInt) = "int"
    show (TipoChar) = "char"
    show (TipoString) = "String"
    show (TipoBoolean) = "boolean"
    show (TipoVoid) = "void"
    show (TipoNada) = ""