{-# LANGUAGE MultiParamTypeClasses, TypeSynonymInstances, FlexibleInstances #-}

{- |

Module : $Header$

Copyright : (c) Till Mossakowski and Uni Bremen 2003

License : GPLv2 or higher, see LICENSE.txt

Maintainer : M.Roggenbach@swansea.ac.uk

Stability : provisional

Portability : non-portable (imports Logic.Logic)

The embedding comorphism from CASL to CspCASL.

-}

module Comorphisms.CASL2CspCASL where

import Logic.Logic

import Logic.Comorphism

import Common.ProofTree

-- CASL

import CASL.AS_Basic_CASL

import CASL.Fold

import CASL.Logic_CASL

import CASL.Morphism

import CASL.Sign

import CASL.Sublogic as SL

-- CspCASL

import CspCASL.Logic_CspCASL

import CspCASL.StatAnaCSP (CspBasicSpec)

import CspCASL.SignCSP

import CspCASL.Morphism (CspCASLMorphism, emptyCspAddMorphism)

import CspCASL.SymbItems

import CspCASL.Symbol

import qualified Data.Set as Set

-- | The identity of the comorphism

data CASL2CspCASL = CASL2CspCASL deriving (Show)

instance Language CASL2CspCASL -- default definition is okay

instance Comorphism CASL2CspCASL

CASL CASL_Sublogics CASLBasicSpec CASLFORMULA SYMB_ITEMS SYMB_MAP_ITEMS

CASLSign CASLMor Symbol RawSymbol ProofTree

CspCASL () CspBasicSpec CspCASLSen CspSymbItems CspSymbMapItems

CspCASLSign CspCASLMorphism CspSymbol CspRawSymbol () where

sourceLogic CASL2CspCASL = CASL

sourceSublogic CASL2CspCASL = SL.top

targetLogic CASL2CspCASL = cspCASL

mapSublogic CASL2CspCASL _ = Just ()

map_theory CASL2CspCASL =

return . simpleTheoryMapping mapSig casl2CspCASLSen

map_symbol CASL2CspCASL _ = Set.singleton . caslToCspSymbol

map_morphism CASL2CspCASL = return . mapMor

map_sentence CASL2CspCASL _sig = return . casl2CspCASLSen

has_model_expansion CASL2CspCASL = True

is_weakly_amalgamable CASL2CspCASL = True

isInclusionComorphism CASL2CspCASL = True

casl2CspCASLSen :: CASLFORMULA -> CspCASLSen

casl2CspCASLSen = foldFormula (mapRecord $ error "casl2CspCASLSen")

mapSig :: CASLSign -> CspCASLSign

mapSig sign =

(emptySign emptyCspSign)

{ sortRel = sortRel sign

, opMap = opMap sign

, assocOps = assocOps sign

, predMap = predMap sign }

mapMor :: CASLMor -> CspCASLMorphism

mapMor m =

(embedMorphism emptyCspAddMorphism (mapSig $ msource m) $ mapSig $ mtarget m)

{ sort_map = sort_map m

, op_map = op_map m

, pred_map = pred_map m }