{-# OPTIONS -cpp #-}

{- |

Module : $Header$

Copyright : (c) Till Mossakowski, Uni Bremen 2002-2004

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

Maintainer : hets@tzi.de

Stability : provisional

Portability : non-portable (imports Logic)

Instance of class Logic for Isabelle (including Pure, HOL etc.).

-}

module Isabelle.Logic_Isabelle where

import Data.Dynamic

import Common.DynamicUtils

import Isabelle.IsaSign

import Isabelle.IsaPrint

#ifdef UNI_PACKAGE

import Isabelle.IsaProve

#endif

import Logic.Logic

import Common.Lib.Pretty

import Common.AS_Annotation

import Common.PrettyPrint

import ATC.IsaSign

-- a dummy datatype for the LogicGraph and for identifying the right

-- instances

data Isabelle = Isabelle deriving (Show)

instance Language Isabelle where

description _ =

"Isabelle - a generic theorem prover\n" ++

"This logic corresponds to the logic of Isabelle,\n" ++

"a weak intuitionistic type theory\n" ++

"Also, the logics encoded in Isabelle, like FOL, HOL, HOLCF, ZF " ++

"are made available\n" ++

"See http://www.cl.cam.ac.uk/Research/HVG/Isabelle/"

sentenceTc, signTc :: TyCon

sentenceTc = mkTyCon "Isabelle.Sign.Sentence"

signTc = mkTyCon "Isabelle.Sign.Sign"

instance Typeable Sentence where

typeOf _ = mkTyConApp sentenceTc []

instance Typeable Sign where

typeOf _ = mkTyConApp signTc []

instance Category Isabelle Sign ()

where

-- ide :: id -> object -> morphism

ide Isabelle _ = ()

-- comp :: id -> morphism -> morphism -> Maybe morphism

comp Isabelle _ _ = Just ()

-- dom, cod :: id -> morphism -> object

dom Isabelle _ = emptySign

cod Isabelle _ = emptySign

-- legal_obj :: id -> object -> Bool

legal_obj Isabelle _ = True -- ??? too simplistic

-- legal_mor :: id -> morphism -> Bool

legal_mor Isabelle _ = False

-- abstract syntax, parsing (and printing)

instance Logic.Logic.Syntax Isabelle () () ()

-- default implementation is fine!

instance Sentences Isabelle Sentence () Sign () () where

map_sen Isabelle () s = return s

print_named Isabelle ga (NamedSen lab sen) =

(if null lab then empty

else text lab <+> colon <> space) <> printText0 ga sen

#ifdef UNI_PACKAGE

provers Isabelle = [isabelleProver]

#endif

-- other default implementations are fine

instance StaticAnalysis Isabelle () Sentence ()

() ()

Sign

() () () where

sign_to_basic_spec Isabelle _sigma _sens = ()

empty_signature Isabelle = emptySign

instance Logic Isabelle () () Sentence () ()

Sign

() () () ()

-- again default implementations are fine