( HsExpr(..), HsLit(..), ArithSeqInfo(..),
HsStmtContext(..),
Match(..), GRHSs(..), GRHS(..), HsPred(..),
- HsDecl(..), TyClDecl(..), InstDecl(..), ConDecl(..),
+ HsDecl(..), InstDecl(..), ConDecl(..),
Stmt(..), HsBinds(..), MonoBinds(..), Sig(..),
Pat(..), HsConDetails(..), HsOverLit, BangType(..),
placeHolderType, HsType(..), HsTupCon(..),
import RdrName ( RdrName, mkRdrUnqual, mkRdrQual, mkOrig )
import Module ( mkModuleName )
-import RdrHsSyn ( mkHsIntegral, mkClassDecl, mkTyData )
+import RdrHsSyn ( mkHsIntegral, mkHsFractional, mkClassDecl, mkTyData )
import OccName
import SrcLoc ( SrcLoc, generatedSrcLoc )
import TyCon ( DataConDetails(..) )
import Type ( Type )
import BasicTypes( Boxity(..), RecFlag(Recursive),
NewOrData(..), StrictnessMark(..) )
-import FastString( mkFastString )
+import ForeignCall ( Safety(..), CCallConv(..), CCallTarget(..) )
+import HsDecls ( CImportSpec(..), ForeignImport(..), ForeignDecl(..) )
+import FastString( mkFastString, nilFS )
import Char ( ord, isAlphaNum )
import List ( partition )
import Outputable
-------------------------------------------------------------------
convertToHsDecls :: [Meta.Dec] -> [HsDecl RdrName]
-convertToHsDecls ds
- = ValD (cvtdecs binds_and_sigs) : map cvt_top top_decls
- where
- (binds_and_sigs, top_decls) = partition sigOrBindP ds
+convertToHsDecls ds = map cvt_top ds
+
+cvt_top d@(Val _ _ _) = ValD (cvtd d)
+cvt_top d@(Fun _ _) = ValD (cvtd d)
+
cvt_top (Data tc tvs constrs derivs)
= TyClD (mkTyData DataType
(noContext, tconName tc, cvt_tvs tvs)
(cvt_context tys)
(HsPredTy (cvt_pred ty))
+cvt_top (Proto nm typ) = SigD (Sig (vName nm) (cvtType typ) loc0)
+
+cvt_top (Foreign (Import callconv safety from nm typ))
+ = ForD (ForeignImport (vName nm) (cvtType typ) fi False loc0)
+ where fi = CImport callconv' safety' c_header nilFS cis
+ callconv' = case callconv of
+ CCall -> CCallConv
+ StdCall -> StdCallConv
+ safety' = case safety of
+ Unsafe -> PlayRisky
+ Safe -> PlaySafe False
+ Threadsafe -> PlaySafe True
+ (c_header', c_func') = break (== ' ') from
+ c_header = mkFastString c_header'
+ c_func = tail c_func'
+ cis = CFunction (StaticTarget (mkFastString c_func))
+
noContext = []
noExistentials = []
noFunDeps = []
cvt (Infix Nothing s (Just y)) = SectionR (HsVar(vName s)) (cvt y)
cvt (Infix (Just x) s Nothing ) = SectionL (cvt x) (HsVar(vName s))
cvt (Infix Nothing s Nothing ) = HsVar(vName s) -- Can I indicate this is an infix thing?
-
+cvt (SigExp e t) = ExprWithTySig (cvt e) (cvtType t)
cvtdecs :: [Meta.Dec] -> HsBinds RdrName
cvtdecs [] = EmptyBinds
ResultStmt (cvt y) loc0] loc0
cvtOverLit :: Lit -> HsOverLit
-cvtOverLit (Int i) = mkHsIntegral (fromInt i)
--- An Int is like an an (overloaded) '3' in a Haskell source program
+cvtOverLit (Integer i) = mkHsIntegral i
+cvtOverLit (Rational r) = mkHsFractional r
+-- An Integer is like an an (overloaded) '3' in a Haskell source program
+-- Similarly 3.5 for fractionals
cvtLit :: Lit -> HsLit
-cvtLit (Char c) = HsChar (ord c)
-cvtLit (CrossStage s) = error "What do we do about crossStage constants?"
+cvtLit (Char c) = HsChar (ord c)
+cvtLit (String s) = HsString (mkFastString s)
cvtp :: Meta.Pat -> Hs.Pat RdrName
cvtp (Plit l)
cvt_tvs :: [String] -> [HsTyVarBndr RdrName]
cvt_tvs tvs = map (UserTyVar . tName) tvs
-cvt_context :: Context -> HsContext RdrName
+cvt_context :: Cxt -> HsContext RdrName
cvt_context tys = map cvt_pred tys
cvt_pred :: Typ -> HsPred RdrName
other -> panic "Malformed predicate"
cvtType :: Meta.Typ -> HsType RdrName
-cvtType (Tvar nm) = HsTyVar(tName nm)
-cvtType (Tapp x y) = trans (root x [y])
- where root (Tapp a b) zs = root a (b:zs)
- root t zs = (t,zs)
- trans (Tcon (Tuple n),args) = HsTupleTy (HsTupCon Boxed n) (map cvtType args)
- trans (Tcon Arrow,[x,y]) = HsFunTy (cvtType x) (cvtType y)
- trans (Tcon List,[x]) = HsListTy (cvtType x)
- trans (Tcon (Name nm),args) = HsTyVar(tconName nm)
- trans (t,args) = panic "bad type application"
+cvtType ty = trans (root ty [])
+ where root (Tapp a b) zs = root a (cvtType b : zs)
+ root t zs = (t,zs)
+
+ trans (Tcon (Tuple n),args) | length args == n
+ = HsTupleTy (HsTupCon Boxed n) args
+ trans (Tcon Arrow, [x,y]) = HsFunTy x y
+ trans (Tcon List, [x]) = HsListTy x
+
+ trans (Tvar nm, args) = foldl HsAppTy (HsTyVar (tName nm)) args
+ trans (Tcon tc, args) = foldl HsAppTy (HsTyVar (tc_name tc)) args
+
+ tc_name (TconName nm) = tconName nm
+ tc_name Arrow = tconName "->"
+ tc_name List = tconName "[]"
+ tc_name (Tuple 0) = tconName "()"
+ tc_name (Tuple n) = tconName ("(" ++ replicate (n-1) ',' ++ ")")
split_ty_app :: Typ -> (Typ, [Typ])
split_ty_app ty = go ty []
sigP (Proto _ _) = True
sigP other = False
-sigOrBindP :: Dec -> Bool
-sigOrBindP (Proto _ _) = True
-sigOrBindP (Val _ _ _) = True
-sigOrBindP (Fun _ _) = True
-sigOrBindP other = False
-
-----------------------------------------------------------
-- some useful things
overloadedLit :: Lit -> Bool
-- True for literals that Haskell treats as overloaded
-overloadedLit (Int l) = True
-overloadedLit l = False
+overloadedLit (Integer l) = True
+overloadedLit (Rational l) = True
+overloadedLit l = False
void :: Type.Type
void = placeHolderType
loc0 :: SrcLoc
loc0 = generatedSrcLoc
-fromInt :: Int -> Integer
-fromInt x = toInteger x
-
-- variable names
vName :: String -> RdrName
vName = mkName varName
projects / ghc-hetmet.git / blobdiff