\begin{code}
module TcModule (
typecheckModule, typecheckIface, typecheckStmt, typecheckExpr,
+ typecheckExtraDecls,
TcResults(..)
) where
#include "HsVersions.h"
-import CmdLineOpts ( DynFlag(..), DynFlags )
+import CmdLineOpts ( DynFlag(..), DynFlags, dopt )
import HsSyn ( HsBinds(..), MonoBinds(..), HsDecl(..), HsExpr(..),
- Stmt(..), InPat(..), HsMatchContext(..), RuleDecl(..),
- isIfaceRuleDecl, nullBinds, andMonoBindList, mkSimpleMatch
+ Stmt(..), InPat(..), HsMatchContext(..), HsDoContext(..), RuleDecl(..),
+ isIfaceRuleDecl, nullBinds, andMonoBindList, mkSimpleMatch, placeHolderType
)
-import PrelNames ( SyntaxMap, mAIN_Name, mainName, ioTyConName, printName,
+import PrelNames ( mAIN_Name, mainName, ioTyConName, printName,
returnIOName, bindIOName, failIOName,
itName
)
import MkIface ( pprModDetails )
import TcExpr ( tcMonoExpr )
import TcMonad
-import TcType ( newTyVarTy, zonkTcType, tcInstType )
+import TcMType ( unifyTauTy, newTyVarTy, zonkTcType, tcInstType )
+import TcType ( Type, liftedTypeKind, openTypeKind,
+ tyVarsOfType, tidyType, tcFunResultTy,
+ mkForAllTys, mkFunTys, mkTyConApp, tcSplitForAllTys
+ )
import TcMatches ( tcStmtsAndThen )
-import TcUnify ( unifyTauTy )
import Inst ( emptyLIE, plusLIE )
import TcBinds ( tcTopBinds )
import TcClassDcl ( tcClassDecls2 )
import TcInstDcls ( tcInstDecls1, tcInstDecls2 )
import TcSimplify ( tcSimplifyTop, tcSimplifyInfer )
import TcTyClsDecls ( tcTyAndClassDecls )
-
import CoreUnfold ( unfoldingTemplate, hasUnfolding )
import TysWiredIn ( mkListTy, unitTy )
-import Type
import ErrUtils ( printErrorsAndWarnings, errorsFound,
dumpIfSet_dyn, dumpIfSet_dyn_or, showPass )
import Id ( Id, idType, idUnfolding )
import Module ( Module, moduleName )
import Name ( Name )
-import NameEnv ( nameEnvElts, lookupNameEnv )
+import NameEnv ( lookupNameEnv )
import TyCon ( tyConGenInfo )
import BasicTypes ( EP(..), Fixity, RecFlag(..) )
import SrcLoc ( noSrcLoc )
import Outputable
+import IO ( stdout )
import HscTypes ( PersistentCompilerState(..), HomeSymbolTable,
PackageTypeEnv, ModIface(..),
ModDetails(..), DFunId,
- TypeEnv, extendTypeEnvList,
- TyThing(..), implicitTyThingIds,
+ TypeEnv, extendTypeEnvList, typeEnvTyCons, typeEnvElts,
+ TyThing(..),
mkTypeEnv
)
-import VarSet
\end{code}
-> PrintUnqualified -- For error printing
-> Module -- Is this really needed
-> [Name] -- Names bound by the Stmt (empty for expressions)
- -> (SyntaxMap,
- RenamedStmt, -- The stmt itself
+ -> (RenamedStmt, -- The stmt itself
[RenamedHsDecl]) -- Plus extra decls it sucked in from interface files
-> IO (Maybe (PersistentCompilerState,
TypecheckedHsExpr,
-- The returned [Id] is the same as the input except for
-- ExprStmt, in which case the returned [Name] is [itName]
-typecheckStmt dflags pcs hst ic_type_env unqual this_mod names (syn_map, stmt, iface_decls)
- = typecheck dflags syn_map pcs hst unqual $
+typecheckStmt dflags pcs hst ic_type_env unqual this_mod names (stmt, iface_decls)
+ = typecheck dflags pcs hst unqual $
-- use the default default settings, i.e. [Integer, Double]
tcSetDefaultTys defaultDefaultTys $
\begin{code}
tcUserStmt :: [Name] -> RenamedStmt -> TcM (TypecheckedHsExpr, [Id])
-tcUserStmt names (ExprStmt expr loc)
+tcUserStmt names (ExprStmt expr _ loc)
= ASSERT( null names )
tcGetUnique `thenNF_Tc` \ uniq ->
let
fresh_it = itName uniq
the_bind = FunMonoBind fresh_it False
- [ mkSimpleMatch [] expr Nothing loc ] loc
+ [ mkSimpleMatch [] expr placeHolderType loc ] loc
in
tryTc_ (traceTc (text "tcs 1b") `thenNF_Tc_`
tc_stmts [fresh_it] [
LetStmt (MonoBind the_bind [] NonRecursive),
- ExprStmt (HsApp (HsVar printName) (HsVar fresh_it)) loc])
+ ExprStmt (HsApp (HsVar printName) (HsVar fresh_it)) placeHolderType loc])
( traceTc (text "tcs 1a") `thenNF_Tc_`
tc_stmts [fresh_it] [BindStmt (VarPatIn fresh_it) expr loc])
-- mk_return builds the expression
-- returnIO @ [()] [coerce () x, .., coerce () z]
mk_return ids = HsApp (TyApp (HsVar return_id) [mkListTy unitTy])
- (ExplicitListOut unitTy (map mk_item ids))
+ (ExplicitList unitTy (map mk_item ids))
mk_item id = HsApp (TyApp (HsVar unsafeCoerceId) [idType id, unitTy])
(HsVar id)
in
traceTc (text "tcs 2") `thenNF_Tc_`
- tcStmtsAndThen combine DoExpr io_ty stmts (
+ tcStmtsAndThen combine (DoCtxt DoExpr) io_ty stmts (
-- Look up the names right in the middle,
-- where they will all be in scope
mapNF_Tc tcLookupId names `thenNF_Tc` \ ids ->
- returnTc ((ids, [ExprStmt (mk_return ids) noSrcLoc]), emptyLIE)
+ returnTc ((ids, [ResultStmt (mk_return ids) noSrcLoc]), emptyLIE)
) `thenTc` \ ((ids, tc_stmts), lie) ->
-- Simplify the context right here, so that we fail
-> TypeEnv -- The interactive context's type envt
-> PrintUnqualified -- For error printing
-> Module
- -> (SyntaxMap,
- RenamedHsExpr, -- The expression itself
+ -> (RenamedHsExpr, -- The expression itself
[RenamedHsDecl]) -- Plus extra decls it sucked in from interface files
-> IO (Maybe (PersistentCompilerState,
TypecheckedHsExpr,
[Id], -- always empty (matches typecheckStmt)
Type))
-typecheckExpr dflags pcs hst ic_type_env unqual this_mod (syn_map, expr, decls)
- = typecheck dflags syn_map pcs hst unqual $
+typecheckExpr dflags pcs hst ic_type_env unqual this_mod (expr, decls)
+ = typecheck dflags pcs hst unqual $
-- use the default default settings, i.e. [Integer, Double]
tcSetDefaultTys defaultDefaultTys $
newTyVarTy openTypeKind `thenTc` \ ty ->
tcMonoExpr expr ty `thenTc` \ (e', lie) ->
- tcSimplifyInfer smpl_doc (varSetElems (tyVarsOfType ty)) lie
- `thenTc` \ (qtvs, lie_free, dict_binds, dict_ids) ->
+ tcSimplifyInfer smpl_doc (tyVarsOfType ty) lie
+ `thenTc` \ (qtvs, lie_free, dict_binds, dict_ids) ->
tcSimplifyTop lie_free `thenTc` \ const_binds ->
let all_expr = mkHsLet const_binds $
%************************************************************************
%* *
+\subsection{Typechecking extra declarations}
+%* *
+%************************************************************************
+
+\begin{code}
+typecheckExtraDecls
+ :: DynFlags
+ -> PersistentCompilerState
+ -> HomeSymbolTable
+ -> PrintUnqualified -- For error printing
+ -> Module -- Is this really needed
+ -> [RenamedHsDecl] -- extra decls sucked in from interface files
+ -> IO (Maybe PersistentCompilerState)
+
+typecheckExtraDecls dflags pcs hst unqual this_mod decls
+ = typecheck dflags pcs hst unqual $
+ fixTc (\ ~(unf_env, _, _, _, _) ->
+ tcImports unf_env pcs hst get_fixity this_mod decls
+ ) `thenTc` \ (env, new_pcs, local_inst_info, deriv_binds, local_rules) ->
+ ASSERT( null local_inst_info && nullBinds deriv_binds && null local_rules )
+ returnTc new_pcs
+ where
+ get_fixity n = pprPanic "typecheckExpr" (ppr n)
+\end{code}
+
+%************************************************************************
+%* *
\subsection{Typechecking a module}
%* *
%************************************************************************
-> HomeSymbolTable
-> ModIface -- Iface for this module
-> PrintUnqualified -- For error printing
- -> (SyntaxMap, [RenamedHsDecl])
+ -> [RenamedHsDecl]
-> IO (Maybe (PersistentCompilerState, TcResults))
-- The new PCS is Augmented with imported information,
-- (but not stuff from this module)
}
-typecheckModule dflags pcs hst mod_iface unqual (syn_map, decls)
- = do { maybe_tc_result <- typecheck dflags syn_map pcs hst unqual $
+typecheckModule dflags pcs hst mod_iface unqual decls
+ = do { maybe_tc_result <- typecheck dflags pcs hst unqual $
tcModule pcs hst get_fixity this_mod decls
- ; printTcDump dflags maybe_tc_result
+ ; printTcDump dflags unqual maybe_tc_result
; return maybe_tc_result }
where
this_mod = mi_module mod_iface
tcModule pcs hst get_fixity this_mod decls
= fixTc (\ ~(unf_env, _, _) ->
- -- Loop back the final environment, including the fully zonkec
+ -- Loop back the final environment, including the fully zonked
-- versions of bindings from this module. In the presence of mutual
-- recursion, interface type signatures may mention variables defined
-- in this module, which is why the knot is so big
lie_rules
in
tcSimplifyTop lie_alldecls `thenTc` \ const_inst_binds ->
+ traceTc (text "endsimpltop") `thenTc_`
-- Backsubstitution. This must be done last.
-- Even tcSimplifyTop may do some unification.
zonkRules more_local_rules `thenNF_Tc` \ more_local_rules' ->
- let local_things = filter (isLocalThing this_mod) (nameEnvElts (getTcGEnv final_env))
-
- -- Create any necessary "implicit" bindings (data constructors etc)
- -- Should we create bindings for dictionary constructors?
- -- They are always fully applied, and the bindings are just there
- -- to support partial applications. But it's easier to let them through.
- implicit_binds = andMonoBindList [ CoreMonoBind id (unfoldingTemplate unf)
- | id <- implicitTyThingIds local_things
- , let unf = idUnfolding id
- , hasUnfolding unf
- ]
+ let local_things = filter (isLocalThing this_mod) (typeEnvElts (getTcGEnv final_env))
local_type_env :: TypeEnv
local_type_env = mkTypeEnv local_things
new_pcs,
TcResults { tc_env = local_type_env,
tc_insts = map iDFunId local_insts,
- tc_binds = implicit_binds `AndMonoBinds` all_binds',
+ tc_binds = all_binds',
tc_fords = foi_decls ++ foe_decls',
tc_rules = all_local_rules
}
-> PersistentCompilerState
-> HomeSymbolTable
-> ModIface -- Iface for this module (just module & fixities)
- -> (SyntaxMap, [RenamedHsDecl])
+ -> [RenamedHsDecl]
-> IO (Maybe (PersistentCompilerState, ModDetails))
-- The new PCS is Augmented with imported information,
-- (but not stuff from this module).
-typecheckIface dflags pcs hst mod_iface (syn_map, decls)
- = do { maybe_tc_stuff <- typecheck dflags syn_map pcs hst alwaysQualify $
+typecheckIface dflags pcs hst mod_iface decls
+ = do { maybe_tc_stuff <- typecheck dflags pcs hst alwaysQualify $
tcIfaceImports pcs hst get_fixity this_mod decls
; printIfaceDump dflags maybe_tc_stuff
; return maybe_tc_stuff }
deriv_binds, local_rules) ->
ASSERT(nullBinds deriv_binds)
let
- local_things = filter (isLocalThing this_mod) (nameEnvElts (getTcGEnv env))
+ local_things = filter (isLocalThing this_mod) (typeEnvElts (getTcGEnv env))
mod_details = ModDetails { md_types = mkTypeEnv local_things,
md_insts = map iDFunId local_inst_info,
-- tcImports recovers internally, but if anything gave rise to
-- an error we'd better stop now, to avoid a cascade
- traceTc (text "Tc1") `thenNF_Tc_`
- tcTyAndClassDecls unf_env tycl_decls `thenTc` \ env ->
- tcSetEnv env $
+ traceTc (text "Tc1") `thenNF_Tc_`
+ tcTyAndClassDecls unf_env this_mod tycl_decls `thenTc` \ env ->
+ tcSetEnv env $
-- Typecheck the instance decls, includes deriving
traceTc (text "Tc2") `thenNF_Tc_`
tcExtendGlobalValEnv sig_ids $
- tcIfaceRules (pcs_rules pcs) this_mod iface_rules `thenNF_Tc` \ (new_pcs_rules, local_rules) ->
+ tcIfaceRules unf_env (pcs_rules pcs) this_mod iface_rules `thenNF_Tc` \ (new_pcs_rules, local_rules) ->
-- When relinking this module from its interface-file decls
-- we'll have IfaceRules that are in fact local to this module
-- That's the reason we we get any local_rules out here
tcGetEnv `thenTc` \ unf_env ->
let
- all_things = nameEnvElts (getTcGEnv unf_env)
+ all_things = typeEnvElts (getTcGEnv unf_env)
-- sometimes we're compiling in the context of a package module
-- (on the GHCi command line, for example). In this case, we
\begin{code}
typecheck :: DynFlags
- -> SyntaxMap
-> PersistentCompilerState
-> HomeSymbolTable
-> PrintUnqualified -- For error printing
-> TcM r
-> IO (Maybe r)
-typecheck dflags syn_map pcs hst unqual thing_inside
+typecheck dflags pcs hst unqual thing_inside
= do { showPass dflags "Typechecker";
- ; env <- initTcEnv syn_map hst (pcs_PTE pcs)
+ ; env <- initTcEnv hst (pcs_PTE pcs)
; (maybe_tc_result, errs) <- initTc dflags env thing_inside
%************************************************************************
\begin{code}
-printTcDump dflags Nothing = return ()
-printTcDump dflags (Just (_, results))
- = do dumpIfSet_dyn_or dflags [Opt_D_dump_types, Opt_D_dump_tc]
- "Interface" (dump_tc_iface results)
+printTcDump dflags unqual Nothing = return ()
+printTcDump dflags unqual (Just (_, results))
+ = do if dopt Opt_D_dump_types dflags || dopt Opt_D_dump_tc dflags then
+ printForUser stdout unqual (dump_tc_iface dflags results)
+ else return ()
dumpIfSet_dyn dflags Opt_D_dump_tc
"Typechecked" (ppr (tc_binds results))
= dumpIfSet_dyn_or dflags [Opt_D_dump_types, Opt_D_dump_tc]
"Interface" (pprModDetails details)
-dump_tc_iface results
+dump_tc_iface dflags results
= vcat [pprModDetails (ModDetails {md_types = tc_env results,
md_insts = tc_insts results,
md_rules = [], md_binds = []}) ,
ppr_rules (tc_rules results),
- ppr_gen_tycons [tc | ATyCon tc <- nameEnvElts (tc_env results)]
+ if dopt Opt_Generics dflags then
+ ppr_gen_tycons (typeEnvTyCons (tc_env results))
+ else
+ empty
]
ppr_rules [] = empty
| otherwise = ppr tycon <> colon <+> ptext SLIT("Not derivable")
ppr_ep (EP from to)
- = vcat [ ptext SLIT("Rep type:") <+> ppr (funResultTy from_tau),
+ = vcat [ ptext SLIT("Rep type:") <+> ppr (tcFunResultTy from_tau),
ptext SLIT("From:") <+> ppr (unfoldingTemplate (idUnfolding from)),
ptext SLIT("To:") <+> ppr (unfoldingTemplate (idUnfolding to))
]
where
- (_,from_tau) = splitForAllTys (idType from)
-
+ (_,from_tau) = tcSplitForAllTys (idType from)
\end{code}
projects / ghc-hetmet.git / blobdiff