{- |

Module : $Header$

Copyright : (c) Zicheng Wang, Uni Bremen 2002-2004

Licence : similar to LGPL, see HetCATS/LICENCE.txt or LIZENZ.txt

Maintainer : hets@tzi.de

Stability : provisional

Portability : portable

Coding out subsorting (SubPCFOL= -> PCFOL=),

following Chap. III:3.1 of the CASL Reference Manual

-}

{-

testen mit

make ghci

:l Comorphisms/CASL2PCFOL.hs

wenn es druch geht, dann in hets.hs einf�gen

import Comorphisms.CASL2PCFOL

und dann einchecken, wenn es durch geht (make hets)

cvs commit

-}

module Comorphisms.CASL2PCFOL where

import Test

import Logic.Logic

import Logic.Comorphism

import Common.Id

import qualified Common.Lib.Map as Map

import qualified Common.Lib.Set as Set

import qualified Common.Lib.Rel as Rel

import Common.AS_Annotation

-- CASL

import CASL.Logic_CASL

import CASL.AS_Basic_CASL

import CASL.Sign

import CASL.Morphism

-- | Add injection, projection and membership symbols to a signature

encodeSig :: Sign f e -> Sign f e

encodeSig sig = error "encodeSig not yet implemented"

{- todo

setRel sig angucken

Liste von Paaren (s,s') daraus generieren (siehe toList aus Common/Lib/Rel.hs)

zur�ckgeben

sig {opMap = ... ein Id "_inj" mit Typmenge { s->s' | s<=s'}

+ ein Id "_proj" mit Typmegen {s'->?s | s<=s' }

predMap = ... pro s einen neuen Id "_elem_s" einf�gen, mit entsprechender Typmenge ( alle s' mit s<=s')

}

-}

generateAxioms :: Sign f e -> [Named (FORMULA f)]

generateAxioms sig =

[NamedSen {senName = "ga_embedding_injectivity", sentence =

Implication (Strong_equation (Sorted_term (Application (Qual_op_name

inj (Total_op_type [s] s' []) []) [Sorted_term (Qual_var x s []) s []]

[]) s' []) (Sorted_term (Application (Qual_op_name inj (Total_op_type

[s] s' []) []) [Sorted_term (Qual_var y s []) s []] []) s' [])

[]) (Strong_equation (Sorted_term

(Qual_var x s []) s []) (Sorted_term (Qual_var y s []) s [])

[]) True []}

| (s,s') <- Rel.toList (sortRel sig)]

where x = mkSimpleId "x"

y = mkSimpleId "y"

inj = mkId [mkSimpleId "_inj"]

{- todo

Axiome auf S. 407, oder RefMan S. 173

einfacher evtl.: mit Hets erzeugen

library encode

spec sp =

sorts s < s'

op inj : s->s'

op proj : s'->?s

pred in_s : s'

var x,y:s

. inj(x)=inj(y) => x=y %(ga_embedding_injectivity)%

end

und dann

sens <- getCASLSens "../CASL-lib/encode.casl"

*Main> sig <- getCASLSig "../CASL-lib/encode.casl"

<interactive>:1: Warning: Defined but not used: sig

Reading ../CASL-lib/encode.casl

Analyzing spec sp

Writing ../CASL-lib/encode.env

*Main> sig

Sign {sortSet = {s,s'}, sortRel = {(s,s')}, opMap = {inj:={OpType {opKind = Total, opArgs = [s], opRes = s'}}}, assocOps = {}, predMap = {}, varMap = {}, sentences = [], envDiags = [], extendedInfo = ()}

*Main> sens <- getCASLSens "../CASL-lib/encode.casl"

<interactive>:1: Warning: Defined but not used: sens

Reading ../CASL-lib/encode.casl

Analyzing spec sp

Writing ../CASL-lib/encode.env

*Main> sens

[NamedSen {senName = "ga_embedding_injectivity", sentence = Implication (Strong_equation (Sorted_term (Application (Qual_op_name inj (Total_op_type [s] s' []) []) [Sorted_term (Qual_var x s []) s []] []) s' []) (Sorted_term (Application (Qual_op_name inj (Total_op_type [s] s' []) []) [Sorted_term (Qual_var y s []) s []] []) s' []) [../CASL-lib/encode.casl:7.16]) (Strong_equation (Sorted_term (Qual_var x s []) s []) (Sorted_term (Qual_var y s []) s []) [../CASL-lib/encode.casl:7.28]) True [../CASL-lib/encode.casl:7.24]}]

*Main>

-}

encodeFORMULA :: Named (FORMULA f) -> Named (FORMULA f)

encodeFORMULA phi = error "encodeFORMULA not yet implemented"