{- |

Module : $Header$

Copyright : (c) Till Mossakowski, Uni Bremen 2004

License : similar to LGPL, see HetCATS/LICENSE.txt or LIZENZ.txt

Maintainer : hets@tzi.de

Stability : provisional

Portability : portable

Abstract syntax for COL extension of CASL

Only the added syntax is specified

-}

module COL.AS_COL where

import Common.Id

import Common.AS_Annotation

import CASL.AS_Basic_CASL

-- DrIFT command

{-! global: UpPos !-}

type COL_BASIC_SPEC = BASIC_SPEC () COL_SIG_ITEM ()

data COL_SIG_ITEM =

Constructor_items [Id] [Pos]

-- pos: ids

| Observer_items [(Id, Maybe Int)] [Pos]

-- pos: ids

deriving (Eq, Show)

constructorS, constructorsS :: String

constructorS = "constructor"

constructorsS = constructorS ++ "s"

observerS, observersS :: String

observerS = "observer"

observersS = observerS ++ "s"

col_reserved_words :: [String]

col_reserved_words = [constructorS,constructorsS,observerS,observersS]