%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
\section[HsBinds]{Abstract syntax: top-level bindings and signatures}
#include "HsVersions.h"
import {-# SOURCE #-} HsExpr ( pprExpr, HsExpr )
-import {-# SOURCE #-} HsMatches ( pprMatches, Match, pprGRHSsAndBinds, GRHSsAndBinds )
+import {-# SOURCE #-} HsMatches ( pprMatches, Match, pprGRHSs, GRHSs )
-- friends:
-import HsPragmas ( GenPragmas, ClassOpPragmas )
import HsTypes ( HsType )
import CoreSyn ( CoreExpr )
import PprCore () -- Instances for Outputable
--others:
-import Id ( DictVar, Id, GenId )
-import Name ( OccName, NamedThing(..) )
-import BasicTypes ( RecFlag(..) )
+import Id ( Id )
+import NameSet ( NameSet, nameSetToList )
+import BasicTypes ( RecFlag(..), Fixity )
import Outputable
import Bag
import SrcLoc ( SrcLoc )
-import Type ( GenType )
-import TyVar ( GenTyVar )
+import Var ( TyVar )
\end{code}
%************************************************************************
Collections of bindings, created by dependency analysis and translation:
\begin{code}
-data HsBinds flexi id pat -- binders and bindees
+data HsBinds id pat -- binders and bindees
= EmptyBinds
- | ThenBinds (HsBinds flexi id pat)
- (HsBinds flexi id pat)
+ | ThenBinds (HsBinds id pat)
+ (HsBinds id pat)
- | MonoBind (MonoBinds flexi id pat)
+ | MonoBind (MonoBinds id pat)
[Sig id] -- Empty on typechecker output
RecFlag
\end{code}
\begin{code}
-nullBinds :: HsBinds flexi id pat -> Bool
+nullBinds :: HsBinds id pat -> Bool
nullBinds EmptyBinds = True
nullBinds (ThenBinds b1 b2) = nullBinds b1 && nullBinds b2
\end{code}
\begin{code}
-instance (Outputable pat, NamedThing id, Outputable id) =>
- Outputable (HsBinds flexi id pat) where
+instance (Outputable pat, Outputable id) =>
+ Outputable (HsBinds id pat) where
ppr binds = ppr_binds binds
ppr_binds EmptyBinds = empty
Global bindings (where clauses)
\begin{code}
-data MonoBinds flexi id pat
+data MonoBinds id pat
= EmptyMonoBinds
- | AndMonoBinds (MonoBinds flexi id pat)
- (MonoBinds flexi id pat)
+ | AndMonoBinds (MonoBinds id pat)
+ (MonoBinds id pat)
| PatMonoBind pat
- (GRHSsAndBinds flexi id pat)
+ (GRHSs id pat)
SrcLoc
| FunMonoBind id
- Bool -- True => infix declaration
- [Match flexi id pat] -- must have at least one Match
+ Bool -- True => infix declaration
+ [Match id pat]
SrcLoc
| VarMonoBind id -- TRANSLATION
- (HsExpr flexi id pat)
+ (HsExpr id pat)
| CoreMonoBind id -- TRANSLATION
CoreExpr -- No zonking; this is a final CoreExpr with Ids and Types!
- | AbsBinds -- Binds abstraction; TRANSLATION
- [GenTyVar flexi] -- Type variables
- [id] -- Dicts
- [([GenTyVar flexi], id, id)] -- (type variables, polymorphic, momonmorphic) triples
- (MonoBinds flexi id pat) -- The "business end"
+ | AbsBinds -- Binds abstraction; TRANSLATION
+ [TyVar] -- Type variables
+ [id] -- Dicts
+ [([TyVar], id, id)] -- (type variables, polymorphic, momonmorphic) triples
+ NameSet -- Set of *polymorphic* variables that have an INLINE pragma
+ (MonoBinds id pat) -- The "business end"
-- Creates bindings for *new* (polymorphic, overloaded) locals
-- in terms of *old* (monomorphic, non-overloaded) ones.
in (fm,gm)
\begin{code}
-nullMonoBinds :: MonoBinds flexi id pat -> Bool
+nullMonoBinds :: MonoBinds id pat -> Bool
nullMonoBinds EmptyMonoBinds = True
nullMonoBinds (AndMonoBinds bs1 bs2) = nullMonoBinds bs1 && nullMonoBinds bs2
nullMonoBinds other_monobind = False
-andMonoBinds :: [MonoBinds flexi id pat] -> MonoBinds flexi id pat
-andMonoBinds binds = foldr AndMonoBinds EmptyMonoBinds binds
+andMonoBinds :: MonoBinds id pat -> MonoBinds id pat -> MonoBinds id pat
+andMonoBinds EmptyMonoBinds mb = mb
+andMonoBinds mb EmptyMonoBinds = mb
+andMonoBinds mb1 mb2 = AndMonoBinds mb1 mb2
+
+andMonoBindList :: [MonoBinds id pat] -> MonoBinds id pat
+andMonoBindList binds = foldr AndMonoBinds EmptyMonoBinds binds
\end{code}
\begin{code}
-instance (NamedThing id, Outputable id, Outputable pat) =>
- Outputable (MonoBinds flexi id pat) where
+instance (Outputable id, Outputable pat) =>
+ Outputable (MonoBinds id pat) where
ppr mbind = ppr_monobind mbind
+ppr_monobind :: (Outputable id, Outputable pat) => MonoBinds id pat -> SDoc
ppr_monobind EmptyMonoBinds = empty
ppr_monobind (AndMonoBinds binds1 binds2)
- = ($$) (ppr_monobind binds1) (ppr_monobind binds2)
+ = ppr_monobind binds1 $$ ppr_monobind binds2
-ppr_monobind (PatMonoBind pat grhss_n_binds locn)
- = sep [ppr pat, nest 4 (pprGRHSsAndBinds False grhss_n_binds)]
+ppr_monobind (PatMonoBind pat grhss locn)
+ = sep [ppr pat, nest 4 (pprGRHSs False grhss)]
ppr_monobind (FunMonoBind fun inf matches locn)
= pprMatches (False, ppr fun) matches
ppr_monobind (CoreMonoBind name expr)
= sep [ppr name <+> equals, nest 4 (ppr expr)]
-ppr_monobind (AbsBinds tyvars dictvars exports val_binds)
- = ($$) (sep [ptext SLIT("AbsBinds"),
- brackets (interpp'SP tyvars),
- brackets (interpp'SP dictvars),
- brackets (interpp'SP exports)])
- (nest 4 (ppr val_binds))
+ppr_monobind (AbsBinds tyvars dictvars exports inlines val_binds)
+ = sep [ptext SLIT("AbsBinds"),
+ brackets (interpp'SP tyvars),
+ brackets (interpp'SP dictvars),
+ brackets (sep (punctuate comma (map ppr exports))),
+ brackets (interpp'SP (nameSetToList inlines))]
+ $$
+ nest 4 (ppr val_binds)
\end{code}
%************************************************************************
(HsType name)
SrcLoc
- | ClassOpSig name -- Selector name
- (Maybe name) -- Default-method name (if any)
+ | ClassOpSig name -- Selector name
+ name -- Default-method name (if any)
+ Bool -- True <=> there is an explicit, programmer-supplied
+ -- default declaration in the class decl
(HsType name)
SrcLoc
| SpecSig name -- specialise a function or datatype ...
- (HsType name) -- ... to these types
- (Maybe name) -- ... maybe using this as the code for it
+ (HsType name) -- ... to these types
+ SrcLoc
+
+ | InlineSig name -- INLINE f
+ (Maybe Int) -- phase
SrcLoc
- | InlineSig name -- INLINE f
+ | NoInlineSig name -- NOINLINE f
+ (Maybe Int) -- phase
SrcLoc
- | MagicUnfoldingSig
- name -- Associate the "name"d function with
- FAST_STRING -- the compiler-builtin unfolding (known
- SrcLoc -- by the String name)
+ | SpecInstSig (HsType name) -- (Class tys); should be a specialisation of the
+ -- current instance decl
+ SrcLoc
+
+ | FixSig (FixitySig name) -- Fixity declaration
+
+
+data FixitySig name = FixitySig name Fixity SrcLoc
\end{code}
\begin{code}
-instance (NamedThing name, Outputable name) => Outputable (Sig name) where
+sigsForMe :: (name -> Bool) -> [Sig name] -> [Sig name]
+sigsForMe f sigs
+ = filter sig_for_me sigs
+ where
+ sig_for_me (Sig n _ _) = f n
+ sig_for_me (ClassOpSig n _ _ _ _) = f n
+ sig_for_me (SpecSig n _ _) = f n
+ sig_for_me (InlineSig n _ _) = f n
+ sig_for_me (NoInlineSig n _ _) = f n
+ sig_for_me (SpecInstSig _ _) = False
+ sig_for_me (FixSig (FixitySig n _ _)) = f n
+
+isFixitySig :: Sig name -> Bool
+isFixitySig (FixSig _) = True
+isFixitySig _ = False
+
+isClassOpSig :: Sig name -> Bool
+isClassOpSig (ClassOpSig _ _ _ _ _) = True
+isClassOpSig _ = False
+
+isPragSig :: Sig name -> Bool
+ -- Identifies pragmas
+isPragSig (SpecSig _ _ _) = True
+isPragSig (InlineSig _ _ _) = True
+isPragSig (NoInlineSig _ _ _) = True
+isPragSig (SpecInstSig _ _) = True
+isPragSig other = False
+\end{code}
+
+\begin{code}
+instance (Outputable name) => Outputable (Sig name) where
ppr sig = ppr_sig sig
+instance Outputable name => Outputable (FixitySig name) where
+ ppr (FixitySig name fixity loc) = sep [ppr fixity, ppr name]
+
ppr_sig (Sig var ty _)
- = sep [ppr var <+> ptext SLIT("::"),
- nest 4 (ppr ty)]
+ = sep [ppr var <+> dcolon, nest 4 (ppr ty)]
-ppr_sig (ClassOpSig var _ ty _)
- = sep [ppr (getOccName var) <+> ptext SLIT("::"),
- nest 4 (ppr ty)]
+ppr_sig (ClassOpSig var _ _ ty _)
+ = sep [ppr var <+> dcolon, nest 4 (ppr ty)]
-ppr_sig (SpecSig var ty using _)
- = sep [ hsep [text "{-# SPECIALIZE", ppr var, ptext SLIT("::")],
- nest 4 (hsep [ppr ty, pp_using using, text "#-}"])
+ppr_sig (SpecSig var ty _)
+ = sep [ hsep [text "{-# SPECIALIZE", ppr var, dcolon],
+ nest 4 (ppr ty <+> text "#-}")
]
- where
- pp_using Nothing = empty
- pp_using (Just me) = hsep [char '=', ppr me]
-ppr_sig (InlineSig var _)
- = hsep [text "{-# INLINE", ppr var, text "#-}"]
+ppr_sig (InlineSig var phase _)
+ = hsep [text "{-# INLINE", ppr_phase phase, ppr var, text "#-}"]
+
+ppr_sig (NoInlineSig var phase _)
+ = hsep [text "{-# NOINLINE", ppr_phase phase, ppr var, text "#-}"]
+
+ppr_sig (SpecInstSig ty _)
+ = hsep [text "{-# SPECIALIZE instance", ppr ty, text "#-}"]
+
+ppr_sig (FixSig fix_sig) = ppr fix_sig
-ppr_sig (MagicUnfoldingSig var str _)
- = hsep [text "{-# MAGIC_UNFOLDING", ppr var, ptext str, text "#-}"]
+ppr_phase Nothing = empty
+ppr_phase (Just n) = int n
\end{code}
projects / ghc-hetmet.git / blobdiff