{- |

Module : $Header$

Description : pretty printing signatures

Copyright : (c) Christian Maeder and Uni Bremen 2002-2003

Maintainer : Christian.Maeder@dfki.de

Stability : experimental

Portability : portable

pretty printing a HasCASL environment

-}

module HasCASL.PrintLe (diffTypeMap, diffType, printMap1) where

import HasCASL.As

import HasCASL.PrintAs

import HasCASL.Le

import HasCASL.Builtin

import HasCASL.ClassAna

import Common.Doc

import Common.DocUtils

import qualified Data.Map as Map

import qualified Data.Set as Set

import Common.Keywords

import Data.List

instance Pretty ClassInfo where

pretty (ClassInfo rk ks) = if Set.null ks then colon <+> pretty rk else

text lessS <+> printList0 (Set.toList ks)

printGenKind :: GenKind -> Doc

printGenKind k = case k of

Loose -> empty

Free -> text freeS

Generated -> text generatedS

instance Pretty TypeDefn where

pretty td = case td of

NoTypeDefn -> empty

PreDatatype -> text "%(data type)%"

AliasTypeDefn s -> text assignS <+> pretty s

DatatypeDefn dd -> text " %[" <> pretty dd <> text "]%"

printAltDefn :: AltDefn -> Doc

printAltDefn (Construct mi ts p sels) = case mi of

Just i -> pretty i <+> fsep (map (parens . semiDs) sels) <> pretty p

Nothing -> text (typeS ++ sS) <+> ppWithCommas ts

instance Pretty Selector where

pretty (Select mi t p) =

(case mi of

Just i -> pretty i <+> (case p of

Partial -> text colonQuMark

Total -> colon) <> space

Nothing -> empty) <> pretty t

instance Pretty TypeInfo where

pretty (TypeInfo _ ks sups def) =

fsep $ [colon, printList0 $ Set.toList ks]

++ (if Set.null sups then []

else [less, printList0 $ Set.toList sups])

++ case def of

NoTypeDefn -> []

_ -> [pretty def]

instance Pretty TypeVarDefn where

pretty (TypeVarDefn v vk _ i) =

printVarKind v vk <+> text ("%(var_" ++ shows i ")%")

instance Pretty VarDefn where

pretty (VarDefn ty) =

colon <+> pretty ty

instance Pretty ConstrInfo where

pretty (ConstrInfo i t) =

pretty i <+> colon <+> pretty t

instance Pretty OpDefn where

pretty od = case od of

NoOpDefn b -> text $ "%(" ++ shows b ")%"

ConstructData _ -> text "%(constructor)%"

SelectData cs _ -> sep [ text "%(selector of constructor(s)"

, printList0 (Set.toList cs) <> text ")%" ]

Definition b t -> fsep [pretty $ NoOpDefn b, equals, pretty t]

instance Pretty OpInfo where

pretty o = let l = Set.toList $ opAttrs o in

fsep $ [pretty (opType o) <> if null l then empty else comma]

++ punctuate comma (map pretty l)

++ [pretty $ opDefn o]

instance Pretty DataEntry where

pretty (DataEntry im i k args _ alts) =

printGenKind k <+> keyword typeS <+>

fsep ([fcat $ pretty i : map (parens . pretty) args

, defn, cat $ punctuate (space <> bar <> space)

$ map printAltDefn $ Set.toList alts]

++ if Map.null im then []

else [text withS, text (typeS ++ sS), printMap1 im])

instance Pretty Sentence where

pretty s = case s of

Formula t -> pretty t

DatatypeSen ls -> vcat (map pretty ls)

ProgEqSen _ _ pe -> keyword programS <+> pretty pe

instance Pretty Env where

pretty (Env{classMap=cm, typeMap=tm, localTypeVars=tvs,

assumps=ops, localVars=vs,

sentences=se, envDiags=ds}) =

let oops = foldr Map.delete ops $ map fst bList

otm = diffTypeMap cm tm bTypes

header s = text "%%" <+> text s

<+> text (replicate (70 - length s) '-')

in noPrint (Map.null cm) (header "Classes")

$+$ printMap0 cm

$+$ noPrint (Map.null otm) (header "Type Constructors")

$+$ printMap0 otm

$+$ noPrint (Map.null tvs) (header "Type Variables")

$+$ printMap0 tvs

$+$ noPrint (Map.null oops) (header "Assumptions")

$+$ printSetMap empty space oops

$+$ noPrint (Map.null vs) (header "Variables")

$+$ printMap0 vs

$+$ noPrint (null se) (header "Sentences")

$+$ vcat (map (pretty . fromLabelledSen) $ reverse se)

$+$ noPrint (null ds) (header "Diagnostics")

$+$ vcat (map pretty $ reverse ds)

printMap0 :: (Pretty a, Ord a, Pretty b) => Map.Map a b -> Doc

printMap0 = printMyMap []

printMap1 :: (Pretty a, Ord a, Pretty b) => Map.Map a b -> Doc

printMap1 = printMyMap [mapsto]

printMyMap :: (Pretty a, Ord a, Pretty b) => [Doc] -> Map.Map a b -> Doc

printMyMap d = printMap id vcat ( \ a b -> fsep $ a : d ++ [b])

instance Pretty Morphism where

pretty m =

let tm = typeIdMap m

fm = funMap m

-- the types in funs are already mapped

-- key und value types only differ wrt. partiality

ds = Map.foldWithKey ( \ (i, _) (j, t) l ->

(pretty i <+> mapsto <+>

pretty j <+> colon <+> pretty t) : l)

[] fm

in (if Map.null tm then empty

else keyword (typeS ++ sS) <+> printMap1 tm)

$+$ (if Map.null fm then empty

else keyword (opS ++ sS) <+> sepByCommas ds)

$+$ colon <+> specBraces (pretty $ msource m)

$+$ mapsto

<+> specBraces (pretty $ mtarget m)

instance Pretty a => Pretty (SymbolType a) where

pretty t = case t of

OpAsItemType sc -> pretty sc

TypeAsItemType k -> pretty k

ClassAsItemType k -> pretty k

instance Pretty Symbol where

pretty s = keyword (case symType s of

OpAsItemType _ -> opS

TypeAsItemType _ -> typeS

ClassAsItemType _ -> classS) <+>

pretty (symName s) <+> colon <+>

pretty (symType s)

instance Pretty RawSymbol where

pretty rs = case rs of

AnID i -> pretty i

AKindedId k i -> printSK k [i] <> pretty i

AQualId i t -> printSK (symbTypeToKind t) [i] <> pretty i <+> colon

<+> pretty t

ASymbol s -> pretty s

diffTypeMap :: ClassMap -> TypeMap -> TypeMap -> TypeMap

diffTypeMap cm t1 t2 =

let t = Map.differenceWith (diffType cm) t1 t2

r = Set.intersection $ Set.union (Map.keysSet t) $ Map.keysSet bTypes

in Map.map ( \ ti -> ti { superTypes = r $ superTypes ti }) t

-- | compute difference of type infos

diffType :: ClassMap -> TypeInfo -> TypeInfo -> Maybe TypeInfo

diffType cm ti1 ti2 =

let k1 = otherTypeKinds ti1

k2 = otherTypeKinds ti2

ks = Set.filter (\ k -> Set.null $

Set.filter (lesserKind cm k) k2) k1

in if Set.null ks then Nothing else

Just $ ti1 { otherTypeKinds = ks

, superTypes = Set.difference (superTypes ti1) $

superTypes ti2 }