module Language.Haskell.Tools.AST.FromGHC.Types where
import ApiAnnotation as GHC (AnnKeywordId(..))
import HsExpr (HsSplice(..))
import HsTypes as GHC
import Id (mkVanillaGlobal)
import SrcLoc as GHC
import TyCon as GHC (TyCon(..))
import TysWiredIn (heqTyCon)
import Control.Applicative (Applicative(..), (<$>), Alternative(..))
import Control.Monad.Reader.Class (asks)
import Control.Reference ((^.))
import Data.List (find)
import Data.Maybe (Maybe(..), fromJust)
import Language.Haskell.Tools.AST as AST
import Language.Haskell.Tools.AST.FromGHC.GHCUtils (GHCName(..), cleanHsType)
import Language.Haskell.Tools.AST.FromGHC.Kinds (trfKindSig, trfKind, trfPromoted')
import Language.Haskell.Tools.AST.FromGHC.Monad
import Language.Haskell.Tools.AST.FromGHC.Names
import Language.Haskell.Tools.AST.FromGHC.TH (trfSplice, trfQuasiQuotation')
import Language.Haskell.Tools.AST.FromGHC.Utils
trfType :: TransformName n r => Located (HsType n) -> Trf (Ann AST.UType (Dom r) RangeStage)
trfType typ | RealSrcSpan loce <- getLoc typ
= do othSplices <- asks typeSplices
let contSplice = find (\sp -> case getSpliceLoc sp of (RealSrcSpan spLoc) -> spLoc `containsSpan` loce; _ -> False) othSplices
case contSplice of Just sp -> let loc = pure $ getSpliceLoc sp
in typeSpliceInserted sp (annLocNoSema loc (AST.UTySplice <$> trfSplice sp))
Nothing -> trfLocNoSema trfType' typ
| otherwise = trfLocNoSema trfType' typ
trfType' :: TransformName n r => HsType n -> Trf (AST.UType (Dom r) RangeStage)
trfType' = trfType'' . cleanHsType where
trfType'' (HsForAllTy [] typ) = trfType' (unLoc typ)
trfType'' (HsForAllTy bndrs typ) = AST.UTyForall <$> defineTypeVars (trfBindings bndrs)
<*> addToScope bndrs (trfType typ)
trfType'' (HsQualTy (L _ []) typ) = trfType' (unLoc typ)
trfType'' (HsQualTy ctx typ) = AST.UTyCtx <$> (fromJust . (^. annMaybe) <$> trfCtx atTheStart ctx)
<*> trfType typ
trfType'' (HsTyVar name) = AST.UTyVar <$> transformingPossibleVar name (trfName name)
trfType'' (HsAppsTy apps) | Just (head, args) <- getAppsTyHead_maybe apps
= foldl (\core t -> AST.UTyApp <$> annLocNoSema (pure $ getLoc head `combineSrcSpans` getLoc t) core <*> trfType t) (trfType' (unLoc head)) args
trfType'' (HsAppTy t1 t2) = AST.UTyApp <$> trfType t1 <*> trfType t2
trfType'' (HsFunTy t1 t2) = AST.UTyFun <$> trfType t1 <*> trfType t2
trfType'' (HsListTy typ) = AST.UTyList <$> trfType typ
trfType'' (HsPArrTy typ) = AST.UTyParArray <$> trfType typ
trfType'' (HsTupleTy HsBoxedOrConstraintTuple typs) = AST.UTyTuple <$> trfAnnList ", " trfType' typs
trfType'' (HsTupleTy HsBoxedTuple typs) = AST.UTyTuple <$> trfAnnList ", " trfType' typs
trfType'' (HsTupleTy HsUnboxedTuple typs) = AST.UTyUnbTuple <$> trfAnnList ", " trfType' typs
trfType'' (HsOpTy t1 op t2) = AST.UTyInfix <$> trfType t1 <*> trfOperator op <*> trfType t2
trfType'' (HsParTy typ) = AST.UTyParen <$> trfType typ
trfType'' (HsKindSig typ kind) = AST.UTyKinded <$> trfType typ <*> trfKind kind
trfType'' (HsSpliceTy qq@(HsQuasiQuote {}) _) = AST.UTyQuasiQuote <$> annContNoSema (trfQuasiQuotation' qq)
trfType'' (HsSpliceTy splice _) = AST.UTySplice <$> trfSplice splice
trfType'' (HsBangTy (HsSrcBang _ SrcUnpack _) typ) = AST.UTyUnpack <$> trfType typ
trfType'' (HsBangTy (HsSrcBang _ SrcNoUnpack _) typ) = AST.UTyNoUnpack <$> trfType typ
trfType'' (HsBangTy (HsSrcBang _ _ SrcStrict) typ) = AST.UTyBang <$> trfType typ
trfType'' (HsBangTy (HsSrcBang _ _ SrcLazy) typ) = AST.UTyLazy <$> trfType typ
trfType'' pt@(HsExplicitListTy {}) = AST.UTyPromoted <$> annContNoSema (trfPromoted' trfType' pt)
trfType'' pt@(HsExplicitTupleTy {}) = AST.UTyPromoted <$> annContNoSema (trfPromoted' trfType' pt)
trfType'' pt@(HsTyLit {}) = AST.UTyPromoted <$> annContNoSema (trfPromoted' trfType' pt)
trfType'' (HsWildCardTy _) = pure AST.UTyWildcard
trfType'' t = unhandledElement "type" t
trfBindings :: TransformName n r => [Located (HsTyVarBndr n)] -> Trf (AnnListG AST.UTyVar (Dom r) RangeStage)
trfBindings vars = trfAnnList " " trfTyVar' vars
trfTyVar :: TransformName n r => Located (HsTyVarBndr n) -> Trf (Ann AST.UTyVar (Dom r) RangeStage)
trfTyVar = trfLocNoSema trfTyVar'
trfTyVar' :: TransformName n r => HsTyVarBndr n -> Trf (AST.UTyVar (Dom r) RangeStage)
trfTyVar' (UserTyVar name) = AST.UTyVarDecl <$> typeVarTransform (trfName name)
<*> (nothing " " "" atTheEnd)
trfTyVar' (KindedTyVar name kind) = AST.UTyVarDecl <$> typeVarTransform (trfName name)
<*> trfKindSig (Just kind)
trfCtx :: TransformName n r => Trf SrcLoc -> Located (HsContext n) -> Trf (AnnMaybeG AST.UContext (Dom r) RangeStage)
trfCtx sp (L _ []) = nothing " " "" sp
trfCtx _ (L l [L _ (HsParTy t)])
= makeJust <$> annLocNoSema (combineSrcSpans l <$> tokenLoc AnnDarrow)
(AST.UContext <$> annLocNoSema (pure l) (AST.UTupleAssert <$> (trfAnnList ", " trfAssertion' [t])))
trfCtx _ (L l [t])
= makeJust <$> annLocNoSema (combineSrcSpans l <$> tokenLoc AnnDarrow)
(AST.UContext <$> trfAssertion t)
trfCtx _ (L l ctx) = makeJust <$> annLocNoSema (combineSrcSpans l <$> tokenLoc AnnDarrow)
(AST.UContext <$> annLocNoSema (pure l) (AST.UTupleAssert <$> (trfAnnList ", " trfAssertion' ctx)))
trfAssertion :: TransformName n r => LHsType n -> Trf (Ann AST.UAssertion (Dom r) RangeStage)
trfAssertion = trfLocNoSema trfAssertion'
trfAssertion' :: forall n r . TransformName n r => HsType n -> Trf (AST.UAssertion (Dom r) RangeStage)
trfAssertion' (cleanHsType -> HsParTy t)
= trfAssertion' (unLoc t)
trfAssertion' (cleanHsType -> HsOpTy left op right)
= AST.UInfixAssert <$> trfType left <*> trfOperator op <*> trfType right
trfAssertion' (cleanHsType -> HsTupleTy _ tys)
= AST.UTupleAssert <$> makeList ", " (after AnnOpenP) (mapM trfAssertion tys)
trfAssertion' (cleanHsType -> HsWildCardTy _)
= pure AST.UWildcardAssert
trfAssertion' (cleanHsType -> t) = case cleanHsType base of
HsTyVar name -> AST.UClassAssert <$> trfName name <*> trfAnnList " " trfType' args
HsEqTy t1 t2 -> AST.UInfixAssert <$> trfType t1 <*> annLocNoSema (tokenLoc AnnTilde) (trfOperator' typeEq) <*> trfType t2
HsIParamTy name t -> do loc <- tokenLoc AnnVal
AST.UImplicitAssert <$> define (focusOn loc (trfImplicitName name)) <*> trfType t
t -> unhandledElement "assertion" t
where (args, _, base) = getArgs t
getArgs :: HsType n -> ([LHsType n], Maybe SrcSpan, HsType n)
getArgs (HsAppTy (L l ft) at) = case getArgs ft of (args, sp, base) -> (args++[at], sp <|> Just l, base)
getArgs t = ([], Nothing, t)
typeEq :: n
typeEq = nameFromId (mkVanillaGlobal (tyConName heqTyCon) (tyConKind heqTyCon))