tcRnExtCore
) where
-#include "HsVersions.h"
-
import IO
#ifdef GHCI
import {-# SOURCE #-} TcSplice ( tcSpliceDecls )
import StaticFlags
import HsSyn
import RdrHsSyn
-
import PrelNames
import RdrName
import TcHsSyn
import FamInst
import InstEnv
import FamInstEnv
+import TcAnnotations
import TcBinds
import TcDefaults
import TcEnv
import IfaceSyn
import TcSimplify
import TcTyClsDecls
+import TcUnify ( withBox )
import LoadIface
import RnNames
import RnEnv
import CoreSyn
import ErrUtils
import Id
+import VarEnv
import Var
import Module
import LazyUniqFM
import NameEnv
import NameSet
import TyCon
+import TysWiredIn
import SrcLoc
import HscTypes
import ListSetOps
import Outputable
+import DataCon
+import Type
+import Class
+import Data.List ( sortBy )
#ifdef GHCI
import Linker
-import DataCon
import TcHsType
import TcMType
import TcMatches
-import TcGadt
import RnTypes
import RnExpr
import IfaceEnv
import MkId
-import TysWiredIn
import IdInfo
import {- Kind parts of -} Type
import BasicTypes
import Foreign.Ptr( Ptr )
+import TidyPgm ( globaliseAndTidyId )
#endif
import FastString
import Control.Monad
import Data.Maybe ( isJust )
+#include "HsVersions.h"
\end{code}
-- thing (especially via 'module Foo' export item)
-- That is, only uses in the *body* of the module are complained about
traceRn (text "rn3") ;
- failIfErrsM ; -- finishDeprecations crashes sometimes
+ failIfErrsM ; -- finishWarnings crashes sometimes
-- as a result of typechecker repairs (e.g. unboundNames)
- tcg_env <- finishDeprecations (hsc_dflags hsc_env) mod_deprec tcg_env ;
+ tcg_env <- finishWarnings (hsc_dflags hsc_env) mod_deprec tcg_env ;
-- Process the export list
- traceRn (text "rn4a: before exports");
+ traceRn (text "rn4a: before exports");
tcg_env <- rnExports (isJust maybe_mod) export_ies tcg_env ;
traceRn (text "rn4b: after exportss") ;
-- Must be done after processing the exports
tcg_env <- checkHiBootIface tcg_env boot_iface ;
- -- Make the new type env available to stuff slurped from interface files
- -- Must do this after checkHiBootIface, because the latter might add new
- -- bindings for boot_dfuns, which may be mentioned in imported unfoldings
- writeMutVar (tcg_type_env_var tcg_env) (tcg_type_env tcg_env) ;
+ -- The new type env is already available to stuff slurped from
+ -- interface files, via TcEnv.updateGlobalTypeEnv
+ -- It's important that this includes the stuff in checkHiBootIface,
+ -- because the latter might add new bindings for boot_dfuns,
+ -- which may be mentioned in imported unfoldings
-- Rename the Haddock documentation
tcg_env <- rnHaddock module_info maybe_doc tcg_env ;
gbl {
tcg_rdr_env = plusOccEnv (tcg_rdr_env gbl) rdr_env,
tcg_imports = tcg_imports gbl `plusImportAvails` imports,
- tcg_rn_imports = fmap (const rn_imports) (tcg_rn_imports gbl),
+ tcg_rn_imports = rn_imports,
tcg_inst_env = extendInstEnvList (tcg_inst_env gbl) home_insts,
tcg_fam_inst_env = extendFamInstEnvList (tcg_fam_inst_env gbl)
home_fam_insts,
-- Check type-familily consistency
; traceRn (text "rn1: checking family instance consistency")
- ; let { dir_imp_mods = map (\ (mod, _) -> mod)
- . moduleEnvElts
+ ; let { dir_imp_mods = moduleEnvKeys
. imp_mods
$ imports }
; checkFamInstConsistency (imp_finsts imports) dir_imp_mods ;
-- (b) tcExtCoreBindings doesn't need anything
-- (in fact, it might not even need to be in the scope of
-- this tcg_env at all)
- tcg_env <- importsFromLocalDecls False (mkFakeGroup ldecls)
- emptyUFM {- no fixity decls -} ;
+ avails <- getLocalNonValBinders (mkFakeGroup ldecls) ;
+ tc_envs <- extendGlobalRdrEnvRn avails emptyFsEnv {- no fixity decls -} ;
- setGblEnv tcg_env $ do {
+ setEnvs tc_envs $ do {
rn_decls <- checkNoErrs $ rnTyClDecls ldecls ;
-- Typecheck them all together so that
-- any mutually recursive types are done right
- tcg_env <- tcTyAndClassDecls emptyModDetails rn_decls ;
- -- Make the new type env available to stuff slurped from interface files
+ -- Just discard the auxiliary bindings; they are generated
+ -- only for Haskell source code, and should already be in Core
+ (tcg_env, _aux_binds) <- tcTyAndClassDecls emptyModDetails rn_decls ;
setGblEnv tcg_env $ do {
+ -- Make the new type env available to stuff slurped from interface files
-- Now the core bindings
core_binds <- initIfaceExtCore (tcExtCoreBindings src_binds) ;
my_exports = map (Avail . idName) bndrs ;
-- ToDo: export the data types also?
- final_type_env = extendTypeEnvWithIds (tcg_type_env tcg_env) bndrs ;
+ final_type_env =
+ extendTypeEnvWithIds (tcg_type_env tcg_env) bndrs ;
mod_guts = ModGuts { mg_module = this_mod,
mg_boot = False,
-- Stubs
mg_rdr_env = emptyGlobalRdrEnv,
mg_fix_env = emptyFixityEnv,
- mg_deprecs = NoDeprecs,
+ mg_warns = NoWarnings,
mg_foreign = NoStubs,
mg_hpc_info = emptyHpcInfo False,
mg_modBreaks = emptyModBreaks,
-- Even tcSimplifyTop may do some unification.
traceTc (text "Tc9") ;
let { (tcg_env, _) = tc_envs
- ; TcGblEnv { tcg_type_env = type_env, tcg_binds = binds,
- tcg_rules = rules, tcg_fords = fords } = tcg_env
+ ; TcGblEnv { tcg_type_env = type_env,
+ tcg_binds = binds,
+ tcg_rules = rules,
+ tcg_fords = fords } = tcg_env
; all_binds = binds `unionBags` inst_binds } ;
failIfErrsM ; -- Don't zonk if there have been errors
(bind_ids, binds', fords', rules') <- zonkTopDecls all_binds rules fords ;
+
let { final_type_env = extendTypeEnvWithIds type_env bind_ids
- ; tcg_env' = tcg_env { tcg_type_env = final_type_env,
- tcg_binds = binds',
+ ; tcg_env' = tcg_env { tcg_binds = binds',
tcg_rules = rules',
tcg_fords = fords' } } ;
- return (tcg_env' { tcg_binds = tcg_binds tcg_env' })
+ setGlobalTypeEnv tcg_env' final_type_env
}
tc_rn_src_decls :: ModDetails -> [LHsDecl RdrName] -> TcM (TcGblEnv, TcLclEnv)
Nothing -> return ()
-- Rename the declarations
- ; (tcg_env, rn_group) <- rnTopSrcDecls first_group
+ ; (tcg_env, HsGroup {
+ hs_tyclds = tycl_decls,
+ hs_instds = inst_decls,
+ hs_derivds = deriv_decls,
+ hs_fords = _,
+ hs_defds = _, -- Todo: check no foreign decls, no rules,
+ hs_ruleds = _, -- no default decls and no annotation decls
+ hs_annds = _,
+ hs_valds = val_binds }) <- rnTopSrcDecls first_group
; setGblEnv tcg_env $ do {
- -- Todo: check no foreign decls, no rules, no default decls
-- Typecheck type/class decls
; traceTc (text "Tc2")
- ; let tycl_decls = hs_tyclds rn_group
- ; tcg_env <- tcTyAndClassDecls emptyModDetails tycl_decls
+ ; (tcg_env, aux_binds) <- tcTyAndClassDecls emptyModDetails tycl_decls
; setGblEnv tcg_env $ do {
-- Typecheck instance decls
; traceTc (text "Tc3")
; (tcg_env, inst_infos, _deriv_binds)
- <- tcInstDecls1 tycl_decls (hs_instds rn_group) (hs_derivds rn_group)
+ <- tcInstDecls1 tycl_decls inst_decls deriv_decls
; setGblEnv tcg_env $ do {
-- Typecheck value declarations
; traceTc (text "Tc5")
- ; val_ids <- tcHsBootSigs (hs_valds rn_group)
+ ; val_ids <- tcHsBootSigs val_binds
-- Wrap up
-- No simplification or zonking to do
-- Make the final type-env
-- Include the dfun_ids so that their type sigs
- -- are written into the interface file
+ -- are written into the interface file.
+ -- And similarly the aux_ids from aux_binds
; let { type_env0 = tcg_type_env gbl_env
; type_env1 = extendTypeEnvWithIds type_env0 val_ids
; type_env2 = extendTypeEnvWithIds type_env1 dfun_ids
- ; dfun_ids = map iDFunId inst_infos }
- ; return (gbl_env { tcg_type_env = type_env2 })
+ ; type_env3 = extendTypeEnvWithIds type_env1 aux_ids
+ ; dfun_ids = map iDFunId inst_infos
+ ; aux_ids = case aux_binds of
+ ValBindsOut _ sigs -> [id | L _ (IdSig id) <- sigs]
+ _ -> panic "tcRnHsBoodDecls"
+ }
+
+ ; setGlobalTypeEnv gbl_env type_env2
}}}}
spliceInHsBootErr (SpliceDecl (L loc _), _)
- = addErrAt loc (ptext SLIT("Splices are not allowed in hs-boot files"))
+ = addErrAt loc (ptext (sLit "Splices are not allowed in hs-boot files"))
\end{code}
Once we've typechecked the body of the module, we want to compare what
-- Check the exports of the boot module, one by one
; mapM_ check_export boot_exports
- -- Check instance declarations
- ; mb_dfun_prs <- mapM check_inst boot_insts
- ; let tcg_env' = tcg_env { tcg_binds = binds `unionBags` dfun_binds,
- tcg_type_env = extendTypeEnvWithIds local_type_env boot_dfuns }
- dfun_prs = catMaybes mb_dfun_prs
- boot_dfuns = map fst dfun_prs
- dfun_binds = listToBag [ noLoc $ VarBind boot_dfun (nlHsVar dfun)
- | (boot_dfun, dfun) <- dfun_prs ]
-
-- Check for no family instances
; unless (null boot_fam_insts) $
panic ("TcRnDriver.checkHiBootIface: Cannot handle family " ++
-- be the equivalent to the dfun bindings returned for class
-- instances? We can't easily equate tycons...
- ; return tcg_env' }
+ -- Check instance declarations
+ ; mb_dfun_prs <- mapM check_inst boot_insts
+ ; let tcg_env' = tcg_env { tcg_binds = binds `unionBags` dfun_binds }
+ final_type_env = extendTypeEnvWithIds local_type_env boot_dfuns
+ dfun_prs = catMaybes mb_dfun_prs
+ boot_dfuns = map fst dfun_prs
+ dfun_binds = listToBag [ noLoc $ VarBind boot_dfun (nlHsVar dfun)
+ | (boot_dfun, dfun) <- dfun_prs ]
+
+ ; failIfErrsM
+ ; setGlobalTypeEnv tcg_env' final_type_env }
where
check_export boot_avail -- boot_avail is exported by the boot iface
| name `elem` dfun_names = return ()
-- Check that the actual module exports the same thing
| not (null missing_names)
- = addErrTc (missingBootThing (head missing_names) "exported by")
+ = addErrAt (nameSrcSpan (head missing_names))
+ (missingBootThing (head missing_names) "exported by")
-- If the boot module does not *define* the thing, we are done
-- (it simply re-exports it, and names match, so nothing further to do)
-- Check that the actual module also defines the thing, and
-- then compare the definitions
- | Just real_thing <- lookupTypeEnv local_type_env name
- = do { let boot_decl = tyThingToIfaceDecl (fromJust mb_boot_thing)
- real_decl = tyThingToIfaceDecl real_thing
- ; checkTc (checkBootDecl boot_decl real_decl)
- (bootMisMatch real_thing boot_decl real_decl) }
- -- The easiest way to check compatibility is to convert to
- -- iface syntax, where we already have good comparison functions
+ | Just real_thing <- lookupTypeEnv local_type_env name,
+ Just boot_thing <- mb_boot_thing
+ = when (not (checkBootDecl boot_thing real_thing))
+ $ addErrAt (nameSrcSpan (getName boot_thing))
+ (let boot_decl = tyThingToIfaceDecl
+ (fromJust mb_boot_thing)
+ real_decl = tyThingToIfaceDecl real_thing
+ in bootMisMatch real_thing boot_decl real_decl)
| otherwise
= addErrTc (missingBootThing name "defined in")
local_boot_dfun = Id.mkExportedLocalId (idName boot_dfun) boot_inst_ty
+-- This has to compare the TyThing from the .hi-boot file to the TyThing
+-- in the current source file. We must be careful to allow alpha-renaming
+-- where appropriate, and also the boot declaration is allowed to omit
+-- constructors and class methods.
+--
+-- See rnfail055 for a good test of this stuff.
+
+checkBootDecl :: TyThing -> TyThing -> Bool
+
+checkBootDecl (AnId id1) (AnId id2)
+ = ASSERT(id1 == id2)
+ (idType id1 `tcEqType` idType id2)
+
+checkBootDecl (ATyCon tc1) (ATyCon tc2)
+ | isSynTyCon tc1 && isSynTyCon tc2
+ = ASSERT(tc1 == tc2)
+ let tvs1 = tyConTyVars tc1; tvs2 = tyConTyVars tc2
+ env = rnBndrs2 env0 tvs1 tvs2
+
+ eqSynRhs (OpenSynTyCon k1 _) (OpenSynTyCon k2 _)
+ = tcEqTypeX env k1 k2
+ eqSynRhs (SynonymTyCon t1) (SynonymTyCon t2)
+ = tcEqTypeX env t1 t2
+ in
+ equalLength tvs1 tvs2 &&
+ eqSynRhs (synTyConRhs tc1) (synTyConRhs tc2)
+
+ | isAlgTyCon tc1 && isAlgTyCon tc2
+ = ASSERT(tc1 == tc2)
+ eqListBy tcEqPred (tyConStupidTheta tc1) (tyConStupidTheta tc2)
+ && eqAlgRhs (algTyConRhs tc1) (algTyConRhs tc2)
+
+ | isForeignTyCon tc1 && isForeignTyCon tc2
+ = tyConExtName tc1 == tyConExtName tc2
+ where
+ env0 = mkRnEnv2 emptyInScopeSet
+
+ eqAlgRhs AbstractTyCon _ = True
+ eqAlgRhs OpenTyCon{} OpenTyCon{} = True
+ eqAlgRhs tc1@DataTyCon{} tc2@DataTyCon{} =
+ eqListBy eqCon (data_cons tc1) (data_cons tc2)
+ eqAlgRhs tc1@NewTyCon{} tc2@NewTyCon{} =
+ eqCon (data_con tc1) (data_con tc2)
+ eqAlgRhs _ _ = False
+
+ eqCon c1 c2
+ = dataConName c1 == dataConName c2
+ && dataConIsInfix c1 == dataConIsInfix c2
+ && dataConStrictMarks c1 == dataConStrictMarks c2
+ && dataConFieldLabels c1 == dataConFieldLabels c2
+ && let tvs1 = dataConUnivTyVars c1 ++ dataConExTyVars c1
+ tvs2 = dataConUnivTyVars c2 ++ dataConExTyVars c2
+ env = rnBndrs2 env0 tvs1 tvs2
+ in
+ equalLength tvs1 tvs2 &&
+ eqListBy (tcEqPredX env)
+ (dataConEqTheta c1 ++ dataConDictTheta c1)
+ (dataConEqTheta c2 ++ dataConDictTheta c2) &&
+ eqListBy (tcEqTypeX env)
+ (dataConOrigArgTys c1)
+ (dataConOrigArgTys c2)
+
+checkBootDecl (AClass c1) (AClass c2)
+ = let
+ (clas_tyvars1, clas_fds1, sc_theta1, _, _, op_stuff1)
+ = classExtraBigSig c1
+ (clas_tyvars2, clas_fds2, sc_theta2, _, _, op_stuff2)
+ = classExtraBigSig c2
+
+ env0 = mkRnEnv2 emptyInScopeSet
+ env = rnBndrs2 env0 clas_tyvars1 clas_tyvars2
+
+ eqSig (id1, def_meth1) (id2, def_meth2)
+ = idName id1 == idName id2 &&
+ tcEqTypeX env op_ty1 op_ty2
+ where
+ (_, rho_ty1) = splitForAllTys (idType id1)
+ op_ty1 = funResultTy rho_ty1
+ (_, rho_ty2) = splitForAllTys (idType id2)
+ op_ty2 = funResultTy rho_ty2
+
+ eqFD (as1,bs1) (as2,bs2) =
+ eqListBy (tcEqTypeX env) (mkTyVarTys as1) (mkTyVarTys as2) &&
+ eqListBy (tcEqTypeX env) (mkTyVarTys bs1) (mkTyVarTys bs2)
+ in
+ equalLength clas_tyvars1 clas_tyvars2 &&
+ eqListBy eqFD clas_fds1 clas_fds2 &&
+ (null sc_theta1 && null op_stuff1
+ ||
+ eqListBy (tcEqPredX env) sc_theta1 sc_theta2 &&
+ eqListBy eqSig op_stuff1 op_stuff2)
+
+checkBootDecl (ADataCon dc1) (ADataCon dc2)
+ = pprPanic "checkBootDecl" (ppr dc1)
+
+checkBootDecl _ _ = False -- probably shouldn't happen
+
----------------
missingBootThing thing what
- = ppr thing <+> ptext SLIT("is exported by the hs-boot file, but not")
- <+> text what <+> ptext SLIT("the module")
+ = ppr thing <+> ptext (sLit "is exported by the hs-boot file, but not")
+ <+> text what <+> ptext (sLit "the module")
bootMisMatch thing boot_decl real_decl
- = vcat [ppr thing <+> ptext SLIT("has conflicting definitions in the module and its hs-boot file"),
- ptext SLIT("Main module:") <+> ppr real_decl,
- ptext SLIT("Boot file: ") <+> ppr boot_decl]
+ = vcat [ppr thing <+> ptext (sLit "has conflicting definitions in the module and its hs-boot file"),
+ ptext (sLit "Main module:") <+> ppr real_decl,
+ ptext (sLit "Boot file: ") <+> ppr boot_decl]
instMisMatch inst
= hang (ppr inst)
- 2 (ptext SLIT("is defined in the hs-boot file, but not in the module itself"))
+ 2 (ptext (sLit "is defined in the hs-boot file, but not in the module itself"))
\end{code}
rnTopSrcDecls :: HsGroup RdrName -> TcM (TcGblEnv, HsGroup Name)
-- Fails if there are any errors
rnTopSrcDecls group
- = do { -- Rename the source decls (with no shadowing; error on duplicates)
- (tcg_env, rn_decls) <- checkNoErrs $ rnSrcDecls False group ;
+ = do { -- Rename the source decls
+ (tcg_env, rn_decls) <- checkNoErrs $ rnSrcDecls group ;
-- save the renamed syntax, if we want it
let { tcg_env'
hs_derivds = deriv_decls,
hs_fords = foreign_decls,
hs_defds = default_decls,
+ hs_annds = annotation_decls,
hs_ruleds = rule_decls,
hs_valds = val_binds })
= do { -- Type-check the type and class decls, and all imported decls
-- The latter come in via tycl_decls
traceTc (text "Tc2") ;
- tcg_env <- tcTyAndClassDecls boot_details tycl_decls ;
+ (tcg_env, aux_binds) <- tcTyAndClassDecls boot_details tycl_decls ;
-- If there are any errors, tcTyAndClassDecls fails here
- -- Make these type and class decls available to stuff slurped from interface files
- writeMutVar (tcg_type_env_var tcg_env) (tcg_type_env tcg_env) ;
-
-
setGblEnv tcg_env $ do {
-- Source-language instances, including derivings,
-- and import the supporting declarations
<- tcInstDecls1 tycl_decls inst_decls deriv_decls;
setGblEnv tcg_env $ do {
- -- Foreign import declarations next. No zonking necessary
- -- here; we can tuck them straight into the global environment.
+ -- Foreign import declarations next.
traceTc (text "Tc4") ;
(fi_ids, fi_decls) <- tcForeignImports foreign_decls ;
tcExtendGlobalValEnv fi_ids $ do {
default_tys <- tcDefaults default_decls ;
updGblEnv (\gbl -> gbl { tcg_default = default_tys }) $ do {
+ -- Now GHC-generated derived bindings, generics, and selectors
+ -- Do not generate warnings from compiler-generated code;
+ -- hence the use of discardWarnings
+ (tc_aux_binds, tcl_env) <- discardWarnings (tcTopBinds aux_binds) ;
+ (tc_deriv_binds, tcl_env) <- setLclTypeEnv tcl_env $
+ discardWarnings (tcTopBinds deriv_binds) ;
+
-- Value declarations next
- -- We also typecheck any extra binds that came out
- -- of the "deriving" process (deriv_binds)
traceTc (text "Tc5") ;
- (tc_val_binds, tcl_env) <- tcTopBinds val_binds ;
- setLclTypeEnv tcl_env $ do {
-
- -- Now GHC-generated derived bindings and generics.
- -- Do not generate warnings from compiler-generated code.
- (tc_deriv_binds, tcl_env) <- discardWarnings $
- tcTopBinds deriv_binds ;
+ (tc_val_binds, tcl_env) <- setLclTypeEnv tcl_env $
+ tcTopBinds val_binds;
-- Second pass over class and instance declarations,
traceTc (text "Tc6") ;
- (inst_binds, tcl_env) <- setLclTypeEnv tcl_env $ tcInstDecls2 tycl_decls inst_infos ;
- showLIE (text "after instDecls2") ;
+ (inst_binds, tcl_env) <- setLclTypeEnv tcl_env $
+ tcInstDecls2 tycl_decls inst_infos ;
+ showLIE (text "after instDecls2") ;
+
+ setLclTypeEnv tcl_env $ do { -- Environment doesn't change now
-- Foreign exports
- -- They need to be zonked, so we return them
traceTc (text "Tc7") ;
(foe_binds, foe_decls) <- tcForeignExports foreign_decls ;
+ -- Annotations
+ annotations <- tcAnnotations annotation_decls ;
+
-- Rules
rules <- tcRules rule_decls ;
tcg_env <- getGblEnv ;
let { all_binds = tc_val_binds `unionBags`
tc_deriv_binds `unionBags`
+ tc_aux_binds `unionBags`
inst_binds `unionBags`
- foe_binds ;
+ foe_binds;
-- Extend the GblEnv with the (as yet un-zonked)
-- bindings, rules, foreign decls
tcg_env' = tcg_env { tcg_binds = tcg_binds tcg_env `unionBags` all_binds,
tcg_rules = tcg_rules tcg_env ++ rules,
+ tcg_anns = tcg_anns tcg_env ++ annotations,
tcg_fords = tcg_fords tcg_env ++ foe_decls ++ fi_decls } } ;
return (tcg_env', tcl_env)
}}}}}}
return tcg_env
| otherwise
- = do { mb_main <- lookupSrcOcc_maybe main_fn
+ = do { mb_main <- lookupGlobalOccRn_maybe main_fn
-- Check that 'main' is in scope
-- It might be imported from another module!
; case mb_main of {
Just main_name -> do
{ traceTc (text "checkMain found" <+> ppr main_mod <+> ppr main_fn)
- ; let { rhs = nlHsApp (nlHsVar runMainIOName) (nlHsVar main_name) }
- -- :Main.main :: IO () = runMainIO main
-
- ; (main_expr, ty) <- addErrCtxt mainCtxt $
- setSrcSpan (srcLocSpan (getSrcLoc main_name)) $
- tcInferRho rhs
+ ; let loc = srcLocSpan (getSrcLoc main_name)
+ ; ioTyCon <- tcLookupTyCon ioTyConName
+ ; (main_expr, res_ty)
+ <- addErrCtxt mainCtxt $
+ withBox liftedTypeKind $ \res_ty ->
+ tcMonoExpr (L loc (HsVar main_name)) (mkTyConApp ioTyCon [res_ty])
-- See Note [Root-main Id]
+ -- Construct the binding
+ -- :Main.main :: IO res_ty = runMainIO res_ty main
+ ; run_main_id <- tcLookupId runMainIOName
; let { root_main_name = mkExternalName rootMainKey rOOT_MAIN
- (mkVarOccFS FSLIT("main"))
+ (mkVarOccFS (fsLit "main"))
(getSrcSpan main_name)
- ; root_main_id = Id.mkExportedLocalId root_main_name ty
- ; main_bind = noLoc (VarBind root_main_id main_expr) }
+ ; root_main_id = Id.mkExportedLocalId root_main_name
+ (mkTyConApp ioTyCon [res_ty])
+ ; co = mkWpTyApps [res_ty]
+ ; rhs = nlHsApp (mkLHsWrap co (nlHsVar run_main_id)) main_expr
+ ; main_bind = noLoc (VarBind root_main_id rhs) }
; return (tcg_env { tcg_binds = tcg_binds tcg_env
`snocBag` main_bind,
where
mod = tcg_mod tcg_env
main_mod = mainModIs dflags
- main_is_flag = mainFunIs dflags
-
- main_fn = case main_is_flag of
- Just fn -> mkRdrUnqual (mkVarOccFS (mkFastString fn))
- Nothing -> main_RDR_Unqual
+ main_fn = getMainFun dflags
complain_no_main | ghcLink dflags == LinkInMemory = return ()
| otherwise = failWithTc noMainMsg
-- In other modes, fail altogether, so that we don't go on
-- and complain a second time when processing the export list.
- mainCtxt = ptext SLIT("When checking the type of the") <+> pp_main_fn
- noMainMsg = ptext SLIT("The") <+> pp_main_fn
- <+> ptext SLIT("is not defined in module") <+> quotes (ppr main_mod)
- pp_main_fn | isJust main_is_flag = ptext SLIT("main function") <+> quotes (ppr main_fn)
- | otherwise = ptext SLIT("function") <+> quotes (ppr main_fn)
+ mainCtxt = ptext (sLit "When checking the type of the") <+> pp_main_fn
+ noMainMsg = ptext (sLit "The") <+> pp_main_fn
+ <+> ptext (sLit "is not defined in module") <+> quotes (ppr main_mod)
+ pp_main_fn | main_fn == main_RDR_Unqual = ptext (sLit "function") <+> quotes (ppr main_fn)
+ | otherwise = ptext (sLit "main function") <+> quotes (ppr main_fn)
+
+-- | Get the unqualified name of the function to use as the \"main\" for the main module.
+-- Either returns the default name or the one configured on the command line with -main-is
+getMainFun :: DynFlags -> RdrName
+getMainFun dflags = case (mainFunIs dflags) of
+ Just fn -> mkRdrUnqual (mkVarOccFS (mkFastString fn))
+ Nothing -> main_RDR_Unqual
\end{code}
Note [Root-main Id]
tcRnStmt :: HscEnv
-> InteractiveContext
-> LStmt RdrName
- -> IO (Maybe ([Id], LHsExpr Id))
+ -> IO (Messages, Maybe ([Id], LHsExpr Id))
-- The returned [Id] is the list of new Ids bound by
-- this statement. It can be used to extend the
-- InteractiveContext via extendInteractiveContext.
mapM bad_unboxed (filter (isUnLiftedType . idType) zonked_ids) ;
traceTc (text "tcs 1") ;
- let { global_ids = map globaliseAndTidy zonked_ids } ;
-
+ let { global_ids = map globaliseAndTidyId zonked_ids } ;
+ -- Note [Interactively-bound Ids in GHCi]
+
{- ---------------------------------------------
At one stage I removed any shadowed bindings from the type_env;
they are inaccessible but might, I suppose, cause a space leak if we leave them there.
return (global_ids, zonked_expr)
}
where
- bad_unboxed id = addErr (sep [ptext SLIT("GHCi can't bind a variable of unlifted type:"),
+ bad_unboxed id = addErr (sep [ptext (sLit "GHCi can't bind a variable of unlifted type:"),
nest 2 (ppr id <+> dcolon <+> ppr (idType id))])
-
-globaliseAndTidy :: Id -> Id
-globaliseAndTidy id -- Note [Interactively-bound Ids in GHCi]
- = Id.setIdType (globaliseId VanillaGlobal id) tidy_type
- where
- tidy_type = tidyTopType (idType id)
\end{code}
Note [Interactively-bound Ids in GHCi]
tcRnExpr :: HscEnv
-> InteractiveContext
-> LHsExpr RdrName
- -> IO (Maybe Type)
+ -> IO (Messages, Maybe Type)
tcRnExpr hsc_env ictxt rdr_expr
= initTcPrintErrors hsc_env iNTERACTIVE $
setInteractiveContext hsc_env ictxt $ do {
zonkTcType all_expr_ty
}
where
- smpl_doc = ptext SLIT("main expression")
+ smpl_doc = ptext (sLit "main expression")
\end{code}
tcRnType just finds the kind of a type
tcRnType :: HscEnv
-> InteractiveContext
-> LHsType RdrName
- -> IO (Maybe Kind)
+ -> IO (Messages, Maybe Kind)
tcRnType hsc_env ictxt rdr_type
= initTcPrintErrors hsc_env iNTERACTIVE $
setInteractiveContext hsc_env ictxt $ do {
failIfErrsM ;
-- Now kind-check the type
- (ty', kind) <- kcHsType rn_type ;
+ (ty', kind) <- kcLHsType rn_type ;
return kind
}
where
- doc = ptext SLIT("In GHCi input")
+ doc = ptext (sLit "In GHCi input")
#endif /* GHCi */
\end{code}
\begin{code}
#ifdef GHCI
--- ASSUMES that the module is either in the HomePackageTable or is
+-- | ASSUMES that the module is either in the 'HomePackageTable' or is
-- a package module with an interface on disk. If neither of these is
-- true, then the result will be an error indicating the interface
-- could not be found.
-- argument).
tcGetModuleExports :: Module -> [Module] -> TcM [AvailInfo]
tcGetModuleExports mod directlyImpMods
- = do { let doc = ptext SLIT("context for compiling statements")
+ = do { let doc = ptext (sLit "context for compiling statements")
; iface <- initIfaceTcRn $ loadSysInterface doc mod
-- Load any orphan-module and family instance-module
; ifaceExportNames (mi_exports iface)
}
-tcRnLookupRdrName :: HscEnv -> RdrName -> IO (Maybe [Name])
+tcRnLookupRdrName :: HscEnv -> RdrName -> IO (Messages, Maybe [Name])
tcRnLookupRdrName hsc_env rdr_name
= initTcPrintErrors hsc_env iNTERACTIVE $
setInteractiveContext hsc_env (hsc_IC hsc_env) $
return good_names
}
-tcRnLookupName :: HscEnv -> Name -> IO (Maybe TyThing)
+tcRnLookupName :: HscEnv -> Name -> IO (Messages, Maybe TyThing)
tcRnLookupName hsc_env name
= initTcPrintErrors hsc_env iNTERACTIVE $
setInteractiveContext hsc_env (hsc_IC hsc_env) $
tcRnGetInfo :: HscEnv
-> Name
- -> IO (Maybe (TyThing, Fixity, [Instance]))
+ -> IO (Messages, Maybe (TyThing, Fixity, [Instance]))
-- Used to implemnent :info in GHCi
--
not (isInternalName name),
isTcOcc (nameOccName name), -- Types and classes only
unQualOK gre ] -- In scope unqualified
- doc = ptext SLIT("Need interface for module whose export(s) are in scope unqualified")
+ doc = ptext (sLit "Need interface for module whose export(s) are in scope unqualified")
#endif /* GHCI */
\end{code}
, ppr_fam_insts fam_insts
, vcat (map ppr rules)
, ppr_gen_tycons (typeEnvTyCons type_env)
- , ptext SLIT("Dependent modules:") <+> ppr (eltsUFM (imp_dep_mods imports))
- , ptext SLIT("Dependent packages:") <+> ppr (imp_dep_pkgs imports)]
+ , ptext (sLit "Dependent modules:") <+>
+ ppr (sortBy cmp_mp $ eltsUFM (imp_dep_mods imports))
+ , ptext (sLit "Dependent packages:") <+>
+ ppr (sortBy stablePackageIdCmp $ imp_dep_pkgs imports)]
+ where -- The two uses of sortBy are just to reduce unnecessary
+ -- wobbling in testsuite output
+ cmp_mp (mod_name1, is_boot1) (mod_name2, is_boot2)
+ = (mod_name1 `stableModuleNameCmp` mod_name2)
+ `thenCmp`
+ (is_boot1 `compare` is_boot2)
pprModGuts :: ModGuts -> SDoc
pprModGuts (ModGuts { mg_types = type_env,
where
le_sig tycon1 tycon2 = getOccName tycon1 <= getOccName tycon2
ppr_tycon tycon
- | isCoercionTyCon tycon = ptext SLIT("coercion") <+> ppr tycon
+ | isCoercionTyCon tycon = ptext (sLit "coercion") <+> ppr tycon
| otherwise = ppr (tyThingToIfaceDecl (ATyCon tycon))
ppr_rules :: [CoreRule] -> SDoc
ppr_rules [] = empty
-ppr_rules rs = vcat [ptext SLIT("{-# RULES"),
+ppr_rules rs = vcat [ptext (sLit "{-# RULES"),
nest 4 (pprRules rs),
- ptext SLIT("#-}")]
+ ptext (sLit "#-}")]
ppr_gen_tycons [] = empty
-ppr_gen_tycons tcs = vcat [ptext SLIT("Tycons with generics:"),
+ppr_gen_tycons tcs = vcat [ptext (sLit "Tycons with generics:"),
nest 2 (fsep (map ppr (filter tyConHasGenerics tcs)))]
\end{code}
projects / ghc-hetmet.git / blobdiff