{- |

Module : $Header$

Description : rename symbols of sentences according to a signature morphisms

Copyright : (c) Christian Maeder, Till Mossakowski and Uni Bremen 2002-2006

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

Maintainer : maeder@tzi.de

Stability : provisional

Portability : portable

Rename symbols of sentences according to a signature morphisms

-}

module CASL.MapSentence where

import CASL.Sign

import CASL.Morphism

import CASL.AS_Basic_CASL

import CASL.Fold

import qualified Data.Map as Map

mapSrt :: Morphism f e m -> SORT -> SORT

mapSrt m = mapSort (sort_map m)

type MapSen f e m = Morphism f e m -> f -> f

mapMorphism :: MapSen f e m -> Morphism f e m

-> Record f (FORMULA f) (TERM f)

mapMorphism mf m = (mapRecord $ mf m)

{ foldQual_var = \ _ v s ps -> Qual_var v (mapSrt m s) ps

, foldApplication = \ _ o ts ps -> Application (mapOpSymb m o) ts ps

, foldSorted_term = \ _ st s ps -> Sorted_term st (mapSrt m s) ps

, foldCast = \ _ st s ps -> Cast st (mapSrt m s) ps

, foldQuantification = \ _ q vs f ps ->

Quantification q (map (mapVars m) vs) f ps

, foldPredication = \ _ p ts ps -> Predication (mapPrSymb m p) ts ps

, foldMembership = \ _ t s ps -> Membership t (mapSrt m s) ps

, foldSort_gen_ax = \ _ constrs isFree -> let

newConstrs = map (mapConstr m) constrs in Sort_gen_ax newConstrs isFree

}

nullMor :: Morphism f e m -> Bool

nullMor m =

Map.null (sort_map m) && Map.null (fun_map m) && Map.null (pred_map m)

mapTerm :: MapSen f e m -> Morphism f e m -> TERM f -> TERM f

mapTerm mf = foldTerm . mapMorphism mf

mapSen :: MapSen f e m -> Morphism f e m -> FORMULA f -> FORMULA f

mapSen mf m = if nullMor m then id else foldFormula $ mapMorphism mf m

mapOpSymb :: Morphism f e m -> OP_SYMB -> OP_SYMB

mapOpSymb m (Qual_op_name i t ps) =

let (j, ty) = mapOpSym (sort_map m) (fun_map m) (i, toOpType t)

in Qual_op_name j (toOP_TYPE ty) ps

mapOpSymb _ (Op_name os) =

error $ "mapOpSymb: unexpected op symb: " ++ show os

mapVars :: Morphism f e m -> VAR_DECL -> VAR_DECL

mapVars m (Var_decl vs s ps) = Var_decl vs (mapSrt m s) ps

mapDecoratedOpSymb :: Morphism f e m -> (OP_SYMB,[Int]) -> (OP_SYMB,[Int])

mapDecoratedOpSymb m (os,indices) = let

newOs = mapOpSymb m os

in (newOs,indices)

mapConstr :: Morphism f e m -> Constraint -> Constraint

mapConstr m constr =

let newS = mapSrt m (newSort constr)

newOps = map (mapDecoratedOpSymb m) (opSymbs constr)

in (constr {newSort = newS, opSymbs = newOps})

mapPrSymb :: Morphism f e m -> PRED_SYMB -> PRED_SYMB

mapPrSymb m (Qual_pred_name i t ps) =

let (j, ty) = mapPredSym (sort_map m) (pred_map m) (i, toPredType t)

in Qual_pred_name j (toPRED_TYPE ty) ps

mapPrSymb _ (Pred_name p) =

error $ "mapPrSymb: unexpected pred symb: " ++ show p