+++ /dev/null
-%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1995
-%
-\section[AbsSyntax]{Abstract syntax definition}
-
-This module glues together the pieces of the Haskell abstract syntax,
-which is declared in the various \tr{Hs*} modules. This module,
-therefore, is almost nothing but re-exporting.
-
-The abstract syntax, used in the front end of the compiler, follows
-that of a paper on the static semantics of Haskell by Simon Peyton
-Jones and Phil Wadler.
-
-The abstract syntax is parameterised with respect to variables
-(abbrev: \tr{name}) and patterns (abbrev: \tr{pat}); here is a typical
-example:
-\begin{pseudocode}
-type ProtoNameExpr = Expr ProtoName ProtoNamePat
-type TypecheckedExpr = Expr Id TypecheckedPat
-\end{pseudocode}
-Some parts of the syntax are unparameterised, because there is no
-need for them to be.
-
-\begin{code}
-#include "HsVersions.h"
-
-module AbsSyn (
- -- the mostly-parameterised data types
- ArithSeqInfo(..),
- Bind(..),
- Binds(..),
- ClassDecl(..),
- ClassPragmas, -- abstract
- ConDecl(..),
- DefaultDecl(..),
- Expr(..),
- FixityDecl(..),
- GRHSsAndBinds(..),
- GRHS(..),
- IE(..),
- ImportedInterface(..),
- IfaceImportDecl(..),
- InPat(..),
- InstDecl(..),
- InstancePragmas, -- abstract
- Interface(..),
- Literal(..),
- Match(..),
- Module(..),
- MonoBinds(..),
- MonoType(..),
- PolyType(..),
- Qual(..),
- Renaming(..),
- Sig(..),
- GenPragmas, -- abstract
- ClassOpPragmas, -- abstract
- TyDecl(..),
- DataPragmas, -- abstract
- TypePragmas, -- abstract
- TypecheckedPat(..),
- SpecialisedInstanceSig(..), -- a user pragma
- DataTypeSig(..),
-
- Context(..), -- synonyms
- ClassAssertion(..),
-
- -- synonyms for the (unparameterised) typechecker input
- ProtoNameArithSeqInfo(..),
- ProtoNameBind(..),
- ProtoNameBinds(..),
- ProtoNameClassDecl(..),
- ProtoNameClassPragmas(..),
- ProtoNameConDecl(..),
- ProtoNameContext(..),
- ProtoNameDefaultDecl(..),
- ProtoNameExpr(..),
- ProtoNameFixityDecl(..),
- ProtoNameGRHSsAndBinds(..),
- ProtoNameGRHS(..),
- ProtoNameImportedInterface(..),
- ProtoNameInstDecl(..),
- ProtoNameInstancePragmas(..),
- ProtoNameInterface(..),
- ProtoNameMatch(..),
- ProtoNameModule(..),
- ProtoNameMonoBinds(..),
- ProtoNameMonoType(..),
- ProtoNamePat(..),
- ProtoNamePolyType(..),
- ProtoNameQual(..),
- ProtoNameSig(..),
- ProtoNameClassOpSig(..),
- ProtoNameGenPragmas(..),
- ProtoNameClassOpPragmas(..),
- ProtoNameTyDecl(..),
- ProtoNameDataPragmas(..),
- ProtoNameSpecialisedInstanceSig(..),
- ProtoNameDataTypeSig(..),
-
- RenamedArithSeqInfo(..),
- RenamedBind(..),
- RenamedBinds(..),
- RenamedClassDecl(..),
- RenamedClassPragmas(..),
- RenamedConDecl(..),
- RenamedContext(..),
- RenamedDefaultDecl(..),
- RenamedExpr(..),
- RenamedFixityDecl(..),
- RenamedGRHSsAndBinds(..),
- RenamedGRHS(..),
- RenamedImportedInterface(..),
- RenamedInstDecl(..),
- RenamedInstancePragmas(..),
- RenamedInterface(..),
- RenamedMatch(..),
- RenamedModule(..),
- RenamedMonoBinds(..),
- RenamedMonoType(..),
- RenamedPat(..),
- RenamedPolyType(..),
- RenamedQual(..),
- RenamedSig(..),
- RenamedClassOpSig(..),
- RenamedGenPragmas(..),
- RenamedClassOpPragmas(..),
- RenamedTyDecl(..),
- RenamedDataPragmas(..),
- RenamedSpecialisedInstanceSig(..),
- RenamedDataTypeSig(..),
-
- -- synonyms for the (unparameterised) typechecker output
- TypecheckedArithSeqInfo(..),
- TypecheckedBind(..),
- TypecheckedBinds(..),
- TypecheckedExpr(..),
- TypecheckedGRHSsAndBinds(..),
- TypecheckedGRHS(..),
- TypecheckedMatch(..),
- TypecheckedMonoBinds(..),
- TypecheckedModule(..),
- TypecheckedQual(..),
-
- -- little help functions (AbsSynFuns)
- collectTopLevelBinders,
- collectBinders, collectTypedBinders,
- collectMonoBinders,
- collectMonoBindersAndLocs,
- collectQualBinders,
- collectPatBinders,
- collectTypedPatBinders,
- extractMonoTyNames,
- cmpInstanceTypes, getNonPrelOuterTyCon,
- getIEStrings, getRawIEStrings, ImExportListInfo(..),
---OLD: getMentionedVars,
- mkDictApp,
- mkDictLam,
- mkTyApp,
- mkTyLam,
- nullBinds,
- nullMonoBinds,
- isLitPat, patsAreAllLits, isConPat, patsAreAllCons,
- irrefutablePat,
-#ifdef DPH
- patsAreAllProcessor,
-#endif
- unfailablePat, unfailablePats,
- pprContext,
- typeOfPat,
- negLiteral,
-
- eqConDecls, eqMonoType, cmpPolyType,
-
- -- imported things so we get a closed interface
- Outputable(..), NamedThing(..),
- ExportFlag, SrcLoc,
- Pretty(..), PprStyle, PrettyRep,
-
- OptIdInfo(..), -- I hate the instance virus!
- IdInfo, SpecEnv, StrictnessInfo, UpdateInfo, ArityInfo,
- DemandInfo, Demand, ArgUsageInfo, ArgUsage, DeforestInfo,
- FBTypeInfo, FBType, FBConsum, FBProd,
-
- Name(..), -- NB: goes out *WITH* constructors
- Id, DictVar(..), Inst, ProtoName, TyVar, UniType, TauType(..),
- Maybe, PreludeNameFun(..), Unique,
- FullName, ShortName, Arity(..), TyCon, Class, ClassOp,
- UnfoldingGuidance, BinderInfo, BasicLit, PrimOp, PrimKind,
- IdEnv(..), UniqFM, FiniteMap,
- CoreExpr, CoreAtom, UnfoldingCoreAtom, UnfoldingCoreExpr,
- UnfoldingPrimOp, UfCostCentre, Bag
- IF_ATTACK_PRAGMAS(COMMA cmpClass COMMA cmpTyCon COMMA cmpTyVar)
- IF_ATTACK_PRAGMAS(COMMA cmpUniType COMMA pprPrimOp)
-#ifndef __GLASGOW_HASKELL__
- ,TAG_
-#endif
-#ifdef DPH
- ,ParQuals(..), ProtoNameParQuals(..),
- RenamedParQuals(..), TypecheckedParQuals(..),
- collectParQualBinders
-#endif {- Data Parallel Haskell -}
- ) where
-
-
-import AbsSynFuns -- help functions
-
-import HsBinds -- the main stuff to export
-import HsCore
-import HsDecls
-import HsExpr
-import HsImpExp
-import HsLit
-import HsMatches
-import HsPat
-import HsPragmas
-import HsTypes
-
-import AbsPrel ( PrimKind, PrimOp
- IF_ATTACK_PRAGMAS(COMMA tagOf_PrimOp)
- IF_ATTACK_PRAGMAS(COMMA pprPrimOp)
- )
-import AbsUniType ( TyVar, TyCon, Arity(..), Class, ClassOp, TauType(..)
- IF_ATTACK_PRAGMAS(COMMA cmpTyVar)
- IF_ATTACK_PRAGMAS(COMMA cmpClass)
- IF_ATTACK_PRAGMAS(COMMA cmpTyCon)
- IF_ATTACK_PRAGMAS(COMMA cmpUniType)
- )
-import BasicLit ( BasicLit )
-import FiniteMap ( FiniteMap )
-import Id ( Id, DictVar(..), DataCon(..) )
-import IdInfo
-import Inst ( Inst )
-import Maybes ( Maybe )
-import Name
-import NameTypes ( ShortName, FullName ) -- .. for pragmas only
-import Outputable
-import Pretty
-import ProtoName ( ProtoName(..) ) -- .. for pragmas only
-import SrcLoc ( SrcLoc )
-import Unique ( Unique )
-import Util
-\end{code}
-
-All we actually declare here is the top-level structure for a module.
-\begin{code}
-data Module name pat
- = Module
- FAST_STRING -- module name
- [IE] -- export list
- [ImportedInterface name pat]
- -- We snaffle interesting stuff out of the
- -- imported interfaces early on, adding that
- -- info to TyDecls/etc; so this list is
- -- often empty, downstream.
- [FixityDecl name]
- [TyDecl name]
- [DataTypeSig name] -- user pragmas that modify TyDecls;
- -- (much like "Sigs" modify value "Binds")
- [ClassDecl name pat]
- [InstDecl name pat]
- [SpecialisedInstanceSig name] -- user pragmas that modify InstDecls
- [DefaultDecl name]
- (Binds name pat) -- the main stuff!
- [Sig name] -- "Sigs" are folded into the "Binds"
- -- pretty early on, so this list is
- -- often either empty or just the
- -- interface signatures.
- SrcLoc
-\end{code}
-
-\begin{code}
-type ProtoNameModule = Module ProtoName ProtoNamePat
-type RenamedModule = Module Name RenamedPat
-type TypecheckedModule = Module Id TypecheckedPat
-\end{code}
-
-\begin{code}
-instance (NamedThing name, Outputable name, NamedThing pat, Outputable pat) =>
- Outputable (Module name pat) where
-
- ppr sty (Module name exports imports fixities
- typedecls typesigs classdecls instdecls instsigs
- defdecls binds sigs src_loc)
- = ppAboves [
- ifPprShowAll sty (ppr sty src_loc),
- if (null exports)
- then (ppCat [ppPStr SLIT("module"), ppPStr name, ppPStr SLIT("where")])
- else (ppAboves [
- ppCat [ppPStr SLIT("module"), ppPStr name, ppLparen],
- ppNest 8 (interpp'SP sty exports),
- ppNest 4 (ppPStr SLIT(") where"))
- ]),
- ppr sty imports, ppr sty fixities,
- ppr sty typedecls, ppr sty typesigs,
- ppr sty classdecls,
- ppr sty instdecls, ppr sty instsigs,
- ppr sty defdecls,
- ppr sty binds, ppr sty sigs
- ]
-\end{code}
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