-----------------------------------------------------------------------------
-module DsMeta( dsBracket,
+module DsMeta( dsBracket, dsReify,
templateHaskellNames, qTyConName,
- liftName, exprTyConName, declTyConName ) where
+ liftName, exprTyConName, declTyConName,
+ decTyConName, typTyConName ) where
#include "HsVersions.h"
HsStmtContext(ListComp,DoExpr), ArithSeqInfo(..),
HsBinds(..), MonoBinds(..), HsConDetails(..),
TyClDecl(..), HsGroup(..),
+ HsReify(..), ReifyFlavour(..),
HsType(..), HsContext(..), HsPred(..), HsTyOp(..),
HsTyVarBndr(..), Sig(..), ForeignDecl(..),
InstDecl(..), ConDecl(..), BangType(..),
PendingSplice, splitHsInstDeclTy,
placeHolderType, tyClDeclNames,
collectHsBinders, collectPatBinders, collectPatsBinders,
- hsTyVarName, hsConArgs, getBangType
+ hsTyVarName, hsConArgs, getBangType,
+ toHsType
)
-import PrelNames ( mETA_META_Name, varQual, tcQual )
+import PrelNames ( mETA_META_Name )
+import MkIface ( ifaceTyThing )
import Name ( Name, nameOccName, nameModule )
import OccName ( isDataOcc, isTvOcc, occNameUserString )
-import Module ( moduleUserString )
-import Id ( Id )
+-- To avoid clashes with DsMeta.varName we must make a local alias for OccName.varName
+-- we do this by removing varName from the import of OccName above, making
+-- a qualified instance of OccName and using OccNameAlias.varName where varName
+-- ws previously used in this file.
+import qualified OccName( varName, tcName )
+
+import Module ( Module, mkThPkgModule, moduleUserString )
+import Id ( Id, idType )
+import Name ( mkKnownKeyExternalName )
+import OccName ( mkOccFS )
import NameEnv
import NameSet
-import Type ( Type, mkGenTyConApp )
+import Type ( Type, TyThing(..), mkGenTyConApp )
import TyCon ( DataConDetails(..) )
import TysWiredIn ( stringTy )
import CoreSyn
import Maybe ( catMaybes )
import Panic ( panic )
import Unique ( mkPreludeTyConUnique, mkPreludeMiscIdUnique )
-import BasicTypes ( NewOrData(..), StrictnessMark(..) )
+import BasicTypes ( NewOrData(..), StrictnessMark(..), isBoxed )
import Outputable
import FastString ( mkFastString )
do_brack (TypBr t) = do { MkC t1 <- repTy t ; return t1 }
do_brack (DecBr ds) = do { MkC ds1 <- repTopDs ds ; return ds1 }
+-----------------------------------------------------------------------------
+dsReify :: HsReify Id -> DsM CoreExpr
+-- Returns a CoreExpr of type reifyType --> M.Typ
+-- reifyDecl --> M.Dec
+-- reifyFixty --> M.Fix
+dsReify (ReifyOut ReifyType name)
+ = do { thing <- dsLookupGlobal name ;
+ -- By deferring the lookup until now (rather than doing it
+ -- in the type checker) we ensure that all zonking has
+ -- been done.
+ case thing of
+ AnId id -> do { MkC e <- repTy (toHsType (idType id)) ;
+ return e }
+ other -> pprPanic "dsReify: reifyType" (ppr name)
+ }
+
+dsReify r@(ReifyOut ReifyDecl name)
+ = do { thing <- dsLookupGlobal name ;
+ mb_d <- repTyClD (ifaceTyThing thing) ;
+ case mb_d of
+ Just (MkC d) -> return d
+ Nothing -> pprPanic "dsReify" (ppr r)
+ }
+
{- -------------- Examples --------------------
[| \x -> x |]
groupBinders (HsGroup { hs_valds = val_decls, hs_tyclds = tycl_decls,
hs_fords = foreign_decls })
+-- Collect the binders of a Group
= collectHsBinders val_decls ++
[n | d <- tycl_decls, (n,_) <- tyClDeclNames d] ++
[n | ForeignImport n _ _ _ _ <- foreign_decls]
repTy other_ty = pprPanic "repTy" (ppr other_ty) -- HsForAllTy, HsKindSig
------------------------------------------------------------------------------
+-----------------------------------------------------------------------------
-- Expressions
------------------------------------------------------------------------------
+-----------------------------------------------------------------------------
repEs :: [HsExpr Name] -> DsM (Core [M.Expr])
repEs es = do { es' <- mapM repE es ;
coreList exprTyConName es' }
+-- FIXME: some of these panics should be converted into proper error messages
+-- unless we can make sure that constructs, which are plainly not
+-- supported in TH already lead to error messages at an earlier stage
repE :: HsExpr Name -> DsM (Core M.Expr)
-repE (HsVar x)
- = do { mb_val <- dsLookupMetaEnv x
- ; case mb_val of
- Nothing -> do { str <- globalVar x
- ; repVarOrCon x str }
- Just (Bound y) -> repVarOrCon x (coreVar y)
- Just (Splice e) -> do { e' <- dsExpr e
- ; return (MkC e') } }
-
-repE (HsIPVar x) = panic "Can't represent implicit parameters"
-repE (HsLit l) = do { a <- repLiteral l; repLit a }
-repE (HsOverLit l) = do { a <- repOverloadedLiteral l; repLit a }
-
-repE (HsSplice n e loc)
- = do { mb_val <- dsLookupMetaEnv n
- ; case mb_val of
- Just (Splice e) -> do { e' <- dsExpr e
- ; return (MkC e') }
- other -> pprPanic "HsSplice" (ppr n) }
-
-
-repE (HsLam m) = repLambda m
-repE (HsApp x y) = do {a <- repE x; b <- repE y; repApp a b}
-repE (NegApp x nm) = panic "No negate yet"
-repE (SectionL x y) = do { a <- repE x; b <- repE y; repSectionL a b }
-repE (SectionR x y) = do { a <- repE x; b <- repE y; repSectionR a b }
-
-repE (OpApp e1 (HsVar op) fix e2)
- = do { arg1 <- repE e1;
- arg2 <- repE e2;
- the_op <- lookupOcc op ;
- repInfixApp arg1 the_op arg2 }
-
-repE (HsCase e ms loc)
- = do { arg <- repE e
- ; ms2 <- mapM repMatchTup ms
- ; repCaseE arg (nonEmptyCoreList ms2) }
-
--- I havn't got the types here right yet
-repE (HsDo DoExpr sts _ ty loc) = do { (ss,zs) <- repSts sts;
- e <- repDoE (nonEmptyCoreList zs);
- wrapGenSyns expTyConName ss e }
-repE (HsDo ListComp sts _ ty loc) = do { (ss,zs) <- repSts sts;
- e <- repComp (nonEmptyCoreList zs);
- wrapGenSyns expTyConName ss e }
-
-repE (ArithSeqIn (From e)) = do { ds1 <- repE e; repFrom ds1 }
-repE (ArithSeqIn (FromThen e1 e2)) = do { ds1 <- repE e1; ds2 <- repE e2;
- repFromThen ds1 ds2 }
-repE (ArithSeqIn (FromTo e1 e2)) = do { ds1 <- repE e1; ds2 <- repE e2;
- repFromTo ds1 ds2 }
-repE (ArithSeqIn (FromThenTo e1 e2 e3)) = do { ds1 <- repE e1; ds2 <- repE e2;
- ds3 <- repE e3; repFromThenTo ds1 ds2 ds3 }
-
-repE (HsIf x y z loc) = do { a <- repE x; b <- repE y; c <- repE z; repCond a b c }
-
-repE (HsLet bs e) = do { (ss,ds) <- repBinds bs
- ; e2 <- addBinds ss (repE e)
- ; z <- repLetE ds e2
- ; wrapGenSyns expTyConName ss z }
-repE (ExplicitList ty es) = do { xs <- repEs es; repListExp xs }
-repE (ExplicitTuple es boxed) = do { xs <- repEs es; repTup xs }
-
-repE (HsWith _ _ _) = panic "No with for implicit parameters yet"
-repE (ExplicitPArr ty es) = panic "No parallel arrays yet"
-repE (RecordConOut _ _ _) = panic "No record construction yet"
-repE (RecordUpdOut _ _ _ _) = panic "No record update yet"
-repE (ExprWithTySig e ty) = panic "No expressions with type signatures yet"
-
+repE (HsVar x) =
+ do { mb_val <- dsLookupMetaEnv x
+ ; case mb_val of
+ Nothing -> do { str <- globalVar x
+ ; repVarOrCon x str }
+ Just (Bound y) -> repVarOrCon x (coreVar y)
+ Just (Splice e) -> do { e' <- dsExpr e
+ ; return (MkC e') } }
+repE (HsIPVar x) =
+ panic "DsMeta.repE: Can't represent implicit parameters"
+repE (HsOverLit l) = do { a <- repOverloadedLiteral l; repLit a }
+repE (HsLit l) = do { a <- repLiteral l; repLit a }
+repE (HsLam m) = repLambda m
+repE (HsApp x y) = do {a <- repE x; b <- repE y; repApp a b}
+repE (OpApp e1 op fix e2) =
+ case op of
+ HsVar op -> do { arg1 <- repE e1;
+ arg2 <- repE e2;
+ the_op <- lookupOcc op ;
+ repInfixApp arg1 the_op arg2 }
+ _ -> panic "DsMeta.repE: Operator is not a variable"
+repE (NegApp x nm) = panic "DsMeta.repE: No negate yet"
+repE (HsPar x) = repE x
+repE (SectionL x y) = do { a <- repE x; b <- repE y; repSectionL a b }
+repE (SectionR x y) = do { a <- repE x; b <- repE y; repSectionR a b }
+repE (HsCase e ms loc) = do { arg <- repE e
+ ; ms2 <- mapM repMatchTup ms
+ ; repCaseE arg (nonEmptyCoreList ms2) }
+repE (HsIf x y z loc) = do
+ a <- repE x
+ b <- repE y
+ c <- repE z
+ repCond a b c
+repE (HsLet bs e) = do { (ss,ds) <- repBinds bs
+ ; e2 <- addBinds ss (repE e)
+ ; z <- repLetE ds e2
+ ; wrapGenSyns expTyConName ss z }
+-- FIXME: I haven't got the types here right yet
+repE (HsDo ctxt sts _ ty loc)
+ | isComprCtxt ctxt = do { (ss,zs) <- repSts sts;
+ e <- repDoE (nonEmptyCoreList zs);
+ wrapGenSyns expTyConName ss e }
+ | otherwise =
+ panic "DsMeta.repE: Can't represent mdo and [: :] yet"
+ where
+ isComprCtxt ListComp = True
+ isComprCtxt DoExpr = True
+ isComprCtxt _ = False
+repE (ExplicitList ty es) = do { xs <- repEs es; repListExp xs }
+repE (ExplicitPArr ty es) =
+ panic "DsMeta.repE: No explicit parallel arrays yet"
+repE (ExplicitTuple es boxed)
+ | isBoxed boxed = do { xs <- repEs es; repTup xs }
+ | otherwise = panic "DsMeta.repE: Can't represent unboxed tuples"
+repE (RecordConOut _ _ _) = panic "DsMeta.repE: No record construction yet"
+repE (RecordUpdOut _ _ _ _) = panic "DsMeta.repE: No record update yet"
+repE (ExprWithTySig e ty) =
+ panic "DsMeta.repE: No expressions with type signatures yet"
+repE (ArithSeqOut _ aseq) =
+ case aseq of
+ From e -> do { ds1 <- repE e; repFrom ds1 }
+ FromThen e1 e2 -> do
+ ds1 <- repE e1
+ ds2 <- repE e2
+ repFromThen ds1 ds2
+ FromTo e1 e2 -> do
+ ds1 <- repE e1
+ ds2 <- repE e2
+ repFromTo ds1 ds2
+ FromThenTo e1 e2 e3 -> do
+ ds1 <- repE e1
+ ds2 <- repE e2
+ ds3 <- repE e3
+ repFromThenTo ds1 ds2 ds3
+repE (PArrSeqOut _ aseq) = panic "DsMeta.repE: parallel array seq.s missing"
+repE (HsCCall _ _ _ _ _) = panic "DsMeta.repE: Can't represent __ccall__"
+repE (HsSCC _ _) = panic "DsMeta.repE: Can't represent SCC"
+repE (HsBracketOut _ _) =
+ panic "DsMeta.repE: Can't represent Oxford brackets"
+repE (HsSplice n e loc) = do { mb_val <- dsLookupMetaEnv n
+ ; case mb_val of
+ Just (Splice e) -> do { e' <- dsExpr e
+ ; return (MkC e') }
+ other -> pprPanic "HsSplice" (ppr n) }
+repE (HsReify _) = panic "DsMeta.repE: Can't represent reification"
+repE e =
+ pprPanic "DsMeta.repE: Illegal expression form" (ppr e)
-----------------------------------------------------------------------------
-- Building representations of auxillary structures like Match, Clause, Stmt,
= do { core1 <- rep_monobind bs
; core2 <- rep_sigs sigs
; return (core1 ++ core2) }
+rep_binds (IPBinds _ _)
+ = panic "DsMeta:repBinds: can't do implicit parameters"
rep_monobind :: MonoBinds Name -> DsM [Core M.Decl]
rep_monobind EmptyMonoBinds = return []
constrName,
exprTyConName, declTyConName, pattTyConName, mtchTyConName,
clseTyConName, stmtTyConName, consTyConName, typeTyConName,
- qTyConName, expTyConName, matTyConName, clsTyConName ]
-
-
-
-intLName = varQual mETA_META_Name FSLIT("intL") intLIdKey
-charLName = varQual mETA_META_Name FSLIT("charL") charLIdKey
-plitName = varQual mETA_META_Name FSLIT("plit") plitIdKey
-pvarName = varQual mETA_META_Name FSLIT("pvar") pvarIdKey
-ptupName = varQual mETA_META_Name FSLIT("ptup") ptupIdKey
-pconName = varQual mETA_META_Name FSLIT("pcon") pconIdKey
-ptildeName = varQual mETA_META_Name FSLIT("ptilde") ptildeIdKey
-paspatName = varQual mETA_META_Name FSLIT("paspat") paspatIdKey
-pwildName = varQual mETA_META_Name FSLIT("pwild") pwildIdKey
-varName = varQual mETA_META_Name FSLIT("var") varIdKey
-conName = varQual mETA_META_Name FSLIT("con") conIdKey
-litName = varQual mETA_META_Name FSLIT("lit") litIdKey
-appName = varQual mETA_META_Name FSLIT("app") appIdKey
-infixEName = varQual mETA_META_Name FSLIT("infixE") infixEIdKey
-lamName = varQual mETA_META_Name FSLIT("lam") lamIdKey
-tupName = varQual mETA_META_Name FSLIT("tup") tupIdKey
-doEName = varQual mETA_META_Name FSLIT("doE") doEIdKey
-compName = varQual mETA_META_Name FSLIT("comp") compIdKey
-listExpName = varQual mETA_META_Name FSLIT("listExp") listExpIdKey
-condName = varQual mETA_META_Name FSLIT("cond") condIdKey
-letEName = varQual mETA_META_Name FSLIT("letE") letEIdKey
-caseEName = varQual mETA_META_Name FSLIT("caseE") caseEIdKey
-infixAppName = varQual mETA_META_Name FSLIT("infixApp") infixAppIdKey
-sectionLName = varQual mETA_META_Name FSLIT("sectionL") sectionLIdKey
-sectionRName = varQual mETA_META_Name FSLIT("sectionR") sectionRIdKey
-guardedName = varQual mETA_META_Name FSLIT("guarded") guardedIdKey
-normalName = varQual mETA_META_Name FSLIT("normal") normalIdKey
-bindStName = varQual mETA_META_Name FSLIT("bindSt") bindStIdKey
-letStName = varQual mETA_META_Name FSLIT("letSt") letStIdKey
-noBindStName = varQual mETA_META_Name FSLIT("noBindSt") noBindStIdKey
-parStName = varQual mETA_META_Name FSLIT("parSt") parStIdKey
-fromName = varQual mETA_META_Name FSLIT("from") fromIdKey
-fromThenName = varQual mETA_META_Name FSLIT("fromThen") fromThenIdKey
-fromToName = varQual mETA_META_Name FSLIT("fromTo") fromToIdKey
-fromThenToName = varQual mETA_META_Name FSLIT("fromThenTo") fromThenToIdKey
-liftName = varQual mETA_META_Name FSLIT("lift") liftIdKey
-gensymName = varQual mETA_META_Name FSLIT("gensym") gensymIdKey
-returnQName = varQual mETA_META_Name FSLIT("returnQ") returnQIdKey
-bindQName = varQual mETA_META_Name FSLIT("bindQ") bindQIdKey
+ qTyConName, expTyConName, matTyConName, clsTyConName,
+ decTyConName, typTyConName ]
+
+
+varQual = mk_known_key_name OccName.varName
+tcQual = mk_known_key_name OccName.tcName
+
+thModule :: Module
+-- NB: the THSyntax module comes from the "haskell-src" package
+thModule = mkThPkgModule mETA_META_Name
+
+mk_known_key_name space str uniq
+ = mkKnownKeyExternalName thModule (mkOccFS space str) uniq
+
+intLName = varQual FSLIT("intL") intLIdKey
+charLName = varQual FSLIT("charL") charLIdKey
+plitName = varQual FSLIT("plit") plitIdKey
+pvarName = varQual FSLIT("pvar") pvarIdKey
+ptupName = varQual FSLIT("ptup") ptupIdKey
+pconName = varQual FSLIT("pcon") pconIdKey
+ptildeName = varQual FSLIT("ptilde") ptildeIdKey
+paspatName = varQual FSLIT("paspat") paspatIdKey
+pwildName = varQual FSLIT("pwild") pwildIdKey
+varName = varQual FSLIT("var") varIdKey
+conName = varQual FSLIT("con") conIdKey
+litName = varQual FSLIT("lit") litIdKey
+appName = varQual FSLIT("app") appIdKey
+infixEName = varQual FSLIT("infixE") infixEIdKey
+lamName = varQual FSLIT("lam") lamIdKey
+tupName = varQual FSLIT("tup") tupIdKey
+doEName = varQual FSLIT("doE") doEIdKey
+compName = varQual FSLIT("comp") compIdKey
+listExpName = varQual FSLIT("listExp") listExpIdKey
+condName = varQual FSLIT("cond") condIdKey
+letEName = varQual FSLIT("letE") letEIdKey
+caseEName = varQual FSLIT("caseE") caseEIdKey
+infixAppName = varQual FSLIT("infixApp") infixAppIdKey
+sectionLName = varQual FSLIT("sectionL") sectionLIdKey
+sectionRName = varQual FSLIT("sectionR") sectionRIdKey
+guardedName = varQual FSLIT("guarded") guardedIdKey
+normalName = varQual FSLIT("normal") normalIdKey
+bindStName = varQual FSLIT("bindSt") bindStIdKey
+letStName = varQual FSLIT("letSt") letStIdKey
+noBindStName = varQual FSLIT("noBindSt") noBindStIdKey
+parStName = varQual FSLIT("parSt") parStIdKey
+fromName = varQual FSLIT("from") fromIdKey
+fromThenName = varQual FSLIT("fromThen") fromThenIdKey
+fromToName = varQual FSLIT("fromTo") fromToIdKey
+fromThenToName = varQual FSLIT("fromThenTo") fromThenToIdKey
+liftName = varQual FSLIT("lift") liftIdKey
+gensymName = varQual FSLIT("gensym") gensymIdKey
+returnQName = varQual FSLIT("returnQ") returnQIdKey
+bindQName = varQual FSLIT("bindQ") bindQIdKey
-- type Mat = ...
-matchName = varQual mETA_META_Name FSLIT("match") matchIdKey
-
--- type Cls = ...
-clauseName = varQual mETA_META_Name FSLIT("clause") clauseIdKey
-
--- data Dec = ...
-funName = varQual mETA_META_Name FSLIT("fun") funIdKey
-valName = varQual mETA_META_Name FSLIT("val") valIdKey
-dataDName = varQual mETA_META_Name FSLIT("dataD") dataDIdKey
-classDName = varQual mETA_META_Name FSLIT("classD") classDIdKey
-instName = varQual mETA_META_Name FSLIT("inst") instIdKey
-protoName = varQual mETA_META_Name FSLIT("proto") protoIdKey
-
--- data Typ = ...
-tvarName = varQual mETA_META_Name FSLIT("tvar") tvarIdKey
-tconName = varQual mETA_META_Name FSLIT("tcon") tconIdKey
-tappName = varQual mETA_META_Name FSLIT("tapp") tappIdKey
-
--- data Tag = ...
-arrowTyConName = varQual mETA_META_Name FSLIT("arrowTyCon") arrowIdKey
-tupleTyConName = varQual mETA_META_Name FSLIT("tupleTyCon") tupleIdKey
-listTyConName = varQual mETA_META_Name FSLIT("listTyCon") listIdKey
-namedTyConName = varQual mETA_META_Name FSLIT("namedTyCon") namedTyConIdKey
-
--- data Con = ...
-constrName = varQual mETA_META_Name FSLIT("constr") constrIdKey
-
-exprTyConName = tcQual mETA_META_Name FSLIT("Expr") exprTyConKey
-declTyConName = tcQual mETA_META_Name FSLIT("Decl") declTyConKey
-pattTyConName = tcQual mETA_META_Name FSLIT("Patt") pattTyConKey
-mtchTyConName = tcQual mETA_META_Name FSLIT("Mtch") mtchTyConKey
-clseTyConName = tcQual mETA_META_Name FSLIT("Clse") clseTyConKey
-stmtTyConName = tcQual mETA_META_Name FSLIT("Stmt") stmtTyConKey
-consTyConName = tcQual mETA_META_Name FSLIT("Cons") consTyConKey
-typeTyConName = tcQual mETA_META_Name FSLIT("Type") typeTyConKey
-
-qTyConName = tcQual mETA_META_Name FSLIT("Q") qTyConKey
-expTyConName = tcQual mETA_META_Name FSLIT("Exp") expTyConKey
-matTyConName = tcQual mETA_META_Name FSLIT("Mat") matTyConKey
-clsTyConName = tcQual mETA_META_Name FSLIT("Cls") clsTyConKey
+matchName = varQual FSLIT("match") matchIdKey
+
+-- type Cls = ...
+clauseName = varQual FSLIT("clause") clauseIdKey
+
+-- data Dec = ...
+funName = varQual FSLIT("fun") funIdKey
+valName = varQual FSLIT("val") valIdKey
+dataDName = varQual FSLIT("dataD") dataDIdKey
+classDName = varQual FSLIT("classD") classDIdKey
+instName = varQual FSLIT("inst") instIdKey
+protoName = varQual FSLIT("proto") protoIdKey
+
+-- data Typ = ...
+tvarName = varQual FSLIT("tvar") tvarIdKey
+tconName = varQual FSLIT("tcon") tconIdKey
+tappName = varQual FSLIT("tapp") tappIdKey
+
+-- data Tag = ...
+arrowTyConName = varQual FSLIT("arrowTyCon") arrowIdKey
+tupleTyConName = varQual FSLIT("tupleTyCon") tupleIdKey
+listTyConName = varQual FSLIT("listTyCon") listIdKey
+namedTyConName = varQual FSLIT("namedTyCon") namedTyConIdKey
+
+-- data Con = ...
+constrName = varQual FSLIT("constr") constrIdKey
+
+exprTyConName = tcQual FSLIT("Expr") exprTyConKey
+declTyConName = tcQual FSLIT("Decl") declTyConKey
+pattTyConName = tcQual FSLIT("Patt") pattTyConKey
+mtchTyConName = tcQual FSLIT("Mtch") mtchTyConKey
+clseTyConName = tcQual FSLIT("Clse") clseTyConKey
+stmtTyConName = tcQual FSLIT("Stmt") stmtTyConKey
+consTyConName = tcQual FSLIT("Cons") consTyConKey
+typeTyConName = tcQual FSLIT("Type") typeTyConKey
+
+qTyConName = tcQual FSLIT("Q") qTyConKey
+expTyConName = tcQual FSLIT("Exp") expTyConKey
+decTyConName = tcQual FSLIT("Dec") decTyConKey
+typTyConName = tcQual FSLIT("Typ") typTyConKey
+matTyConName = tcQual FSLIT("Mat") matTyConKey
+clsTyConName = tcQual FSLIT("Cls") clsTyConKey
-- TyConUniques available: 100-119
-- Check in PrelNames if you want to change this
stmtTyConKey = mkPreludeTyConUnique 109
consTyConKey = mkPreludeTyConUnique 110
typeTyConKey = mkPreludeTyConUnique 111
+typTyConKey = mkPreludeTyConUnique 112
+decTyConKey = mkPreludeTyConUnique 113
+
-- IdUniques available: 200-299
projects / ghc-hetmet.git / blobdiff