{-# LANGUAGE MultiParamTypeClasses, TypeSynonymInstances #-}

{- |

Module : $Header$

Description : translating from HolLight to Isabelle

Copyright : (c) M. Codescu, DFKI 2010

License : GPLv2 or higher, see LICENSE.txt

Maintainer : Mihai.Codescu@dfki.de

Stability : provisional

Portability : portable

-}

module Comorphisms.HolLight2Isabelle where

import Logic.Comorphism

import Logic.Logic

import qualified Isabelle.IsaSign as IsaSign

import Isabelle.Logic_Isabelle

import Isabelle.IsaConsts

import Common.Result

import Common.AS_Annotation

import qualified Data.Map as Map

import qualified Data.Set as Set

import HolLight.Sign

import HolLight.Sentence

import HolLight.Term

import HolLight.Logic_HolLight

import HolLight.Sublogic

data HolLight2Isabelle = HolLight2Isabelle deriving Show

instance Language HolLight2Isabelle

instance Comorphism HolLight2Isabelle

HolLight

HolLightSL -- sublogic

() -- basic_spec

Sentence -- sentence

() -- symb_items

() -- symb_map_items

Sign -- sign

HolLightMorphism -- morphism

() -- symbol

() -- raw_symbol

() -- proof_tree

Isabelle () () IsaSign.Sentence () ()

IsaSign.Sign

IsabelleMorphism () () () where

sourceLogic _ = HolLight

sourceSublogic _ = Top

targetLogic _ = Isabelle

mapSublogic _ _ = Just ()

map_theory HolLight2Isabelle = mapTheory

map_morphism = error "nyi"

map_sentence HolLight2Isabelle = mapSentence

-- mapping sentences

mapSentence :: Sign -> Sentence -> Result IsaSign.Sentence

mapSentence _ s = return $ mapHolSen s

mapHolSen :: Sentence -> IsaSign.Sentence

mapHolSen (Sentence _n t _p) = IsaSign.Sentence{

IsaSign.isSimp = False

,IsaSign.isRefuteAux = False

,IsaSign.metaTerm =

IsaSign.Term $ translateTerm t

, IsaSign.thmProof = Nothing

}

tp2DTyp :: HolType -> IsaSign.DTyp

tp2DTyp tp = IsaSign.Hide{

IsaSign.typ = tp2Typ tp,

IsaSign.kon = IsaSign.TCon,

IsaSign.arit = Nothing

}

translateTerm :: Term -> IsaSign.Term

translateTerm (Var s _tp _) = IsaSign.Free $ IsaSign.mkVName s

translateTerm (Const s tp _) = IsaSign.Const (IsaSign.mkVName s)

$ tp2DTyp tp

translateTerm (Comb tm1 tm2) = IsaSign.App (translateTerm tm1)

(translateTerm tm2)

IsaSign.NotCont

translateTerm (Abs tm1 tm2) = IsaSign.Abs (translateTerm tm1)

(translateTerm tm2)

IsaSign.NotCont

-- mapping theories

mapTheory :: (Sign, [Named Sentence]) ->

Result(IsaSign.Sign, [Named IsaSign.Sentence])

mapTheory (sig, n_sens) = let

sig' = mapSign sig

n_sens' = map mapNamedSen n_sens

in return (sig', n_sens')

mapSign :: Sign -> IsaSign.Sign

mapSign (Sign t o) = IsaSign.emptySign{

IsaSign.baseSig = IsaSign.MainHC_thy,

IsaSign.constTab = mapOps o,

IsaSign.tsig = mapTypes t

}

mapOps :: Map.Map String (Set.Set HolType) -> IsaSign.ConstTab

mapOps f = Map.fromList $

map (\(x,y) -> (IsaSign.mkVName x, tp2Typ y)) $

concatMap (\(x, s) -> Set.toList $ Set.map (\a -> (x,a)) s)

$ Map.toList f

tp2Typ :: HolType -> IsaSign.Typ

tp2Typ (TyVar s) = IsaSign.Type s holType []

tp2Typ (TyApp s tps) = IsaSign.Type s holType $ map tp2Typ tps

mapTypes :: Set.Set HolType -> IsaSign.TypeSig

mapTypes tps = IsaSign.emptyTypeSig {

IsaSign.arities = Map.fromList $ map extractTypeName (Set.toList tps)}

where

extractTypeName t@(TyVar s) = (s, [(isaTerm, [(tp2Typ t, holType)])])

extractTypeName t@(TyApp s _tps') = (s, [(isaTerm, [(tp2Typ t, holType)])])

mapNamedSen :: Named Sentence -> Named IsaSign.Sentence

mapNamedSen n_sen = let

sen = sentence n_sen

trans = mapHolSen sen

in

n_sen{sentence = trans}