%
+% (c) The University of Glasgow 2006
% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
-\section{Dealing with interface files}
+
+Loading interface files
\begin{code}
module LoadIface (
- loadInterface, loadHomeInterface, loadWiredInHomeIface,
+ loadInterface, loadInterfaceForName, loadWiredInHomeIface,
loadSrcInterface, loadSysInterface, loadOrphanModules,
findAndReadIface, readIface, -- Used when reading the module's old interface
- loadDecls, ifaceStats, discardDeclPrags,
- initExternalPackageState
+ loadDecls, -- Should move to TcIface and be renamed
+ initExternalPackageState,
+
+ ifaceStats, pprModIface, showIface
) where
#include "HsVersions.h"
-import {-# SOURCE #-} TcIface( tcIfaceDecl, tcIfaceRule, tcIfaceInst )
-
-import Packages ( PackageState(..), PackageIdH(..), isHomePackage )
-import DynFlags ( DynFlags(..), DynFlag( Opt_IgnoreInterfacePragmas ),
- isOneShot )
-import IfaceSyn ( IfaceDecl(..), IfaceConDecl(..), IfaceClassOp(..),
- IfaceConDecls(..), IfaceIdInfo(..) )
-import IfaceEnv ( newGlobalBinder )
-import HscTypes ( ModIface(..), TyThing, emptyModIface, EpsStats(..),
- addEpsInStats, ExternalPackageState(..),
- PackageTypeEnv, emptyTypeEnv, HscEnv(..),
- lookupIfaceByModule, emptyPackageIfaceTable,
- IsBootInterface, mkIfaceFixCache,
- implicitTyThings
- )
-
-import BasicTypes ( Version, Fixity(..), FixityDirection(..),
- isMarkedStrict )
-import TcRnMonad
+import {-# SOURCE #-} TcIface( tcIfaceDecl, tcIfaceRules, tcIfaceInst,
+ tcIfaceFamInst )
+
+import DynFlags
+import IfaceSyn
+import IfaceEnv
+import HscTypes
-import PrelNames ( gHC_PRIM )
-import PrelInfo ( ghcPrimExports )
-import PrelRules ( builtinRules )
-import Rules ( extendRuleBaseList, mkRuleBase )
-import InstEnv ( emptyInstEnv, extendInstEnvList )
-import Name ( Name {-instance NamedThing-}, getOccName,
- nameModule, nameIsLocalOrFrom, isWiredInName )
+import BasicTypes hiding (SuccessFlag(..))
+import TcRnMonad
+import Type
+
+import PrelNames
+import PrelInfo
+import PrelRules
+import Rules
+import InstEnv
+import FamInstEnv
+import Name
import NameEnv
-import MkId ( seqId )
-import Module ( Module, ModLocation(ml_hi_file), emptyModuleEnv,
- addBootSuffix_maybe,
- extendModuleEnv, lookupModuleEnv, moduleString
- )
-import OccName ( OccName, mkOccEnv, lookupOccEnv, mkClassTyConOcc, mkClassDataConOcc,
- mkSuperDictSelOcc, mkDataConWrapperOcc, mkDataConWorkerOcc )
-import SrcLoc ( importedSrcLoc )
-import Maybes ( MaybeErr(..) )
-import FastString ( mkFastString )
-import ErrUtils ( Message )
-import Finder ( findModule, findPackageModule, FindResult(..), cantFindError )
+import MkId
+import Module
+import OccName
+import SrcLoc
+import Maybes
+import ErrUtils
+import Finder
+import UniqFM
+import StaticFlags
import Outputable
-import BinIface ( readBinIface )
-import Panic ( ghcError, tryMost, showException, GhcException(..) )
-import List ( nub )
+import BinIface
+import Panic
+
+import Data.List
+import Data.Maybe
+import Data.IORef
\end{code}
%************************************************************************
\begin{code}
-loadSrcInterface :: SDoc -> Module -> IsBootInterface -> RnM ModIface
--- This is called for each 'import' declaration in the source code
--- On a failure, fail in the monad with an error message
-
-loadSrcInterface doc mod want_boot
- = do { mb_iface <- initIfaceTcRn $
- loadInterface doc mod (ImportByUser want_boot)
- ; case mb_iface of
- Failed err -> failWithTc (elaborate err)
- Succeeded iface -> return iface
- }
- where
- elaborate err = hang (ptext SLIT("Failed to load interface for") <+>
- quotes (ppr mod) <> colon) 4 err
-
----------------
-loadOrphanModules :: [Module] -> TcM ()
-loadOrphanModules mods
+-- | Load the interface corresponding to an @import@ directive in
+-- source code. On a failure, fail in the monad with an error message.
+loadSrcInterface :: SDoc -> ModuleName -> IsBootInterface -> RnM ModIface
+loadSrcInterface doc mod want_boot = do
+ -- We must first find which Module this import refers to. This involves
+ -- calling the Finder, which as a side effect will search the filesystem
+ -- and create a ModLocation. If successful, loadIface will read the
+ -- interface; it will call the Finder again, but the ModLocation will be
+ -- cached from the first search.
+ hsc_env <- getTopEnv
+ res <- ioToIOEnv $ findImportedModule hsc_env mod Nothing
+ case res of
+ Found _ mod -> do
+ mb_iface <- initIfaceTcRn $ loadInterface doc mod (ImportByUser want_boot)
+ case mb_iface of
+ Failed err -> failWithTc err
+ Succeeded iface -> return iface
+ err ->
+ let dflags = hsc_dflags hsc_env in
+ failWithTc (cannotFindInterface dflags mod err)
+
+-- | Load interfaces for a collection of orphan modules.
+loadOrphanModules :: [Module] -- the modules
+ -> Bool -- these are family instance-modules
+ -> TcM ()
+loadOrphanModules mods isFamInstMod
| null mods = returnM ()
| otherwise = initIfaceTcRn $
do { traceIf (text "Loading orphan modules:" <+>
; returnM () }
where
load mod = loadSysInterface (mk_doc mod) mod
- mk_doc mod = ppr mod <+> ptext SLIT("is a orphan-instance module")
+ mk_doc mod
+ | isFamInstMod = ppr mod <+> ptext SLIT("is a family-instance module")
+ | otherwise = ppr mod <+> ptext SLIT("is a orphan-instance module")
----------------
-loadHomeInterface :: SDoc -> Name -> TcRn ModIface
-loadHomeInterface doc name
+-- | Loads the interface for a given Name.
+loadInterfaceForName :: SDoc -> Name -> TcRn ModIface
+loadInterfaceForName doc name
= do {
#ifdef DEBUG
-- Should not be called with a name from the module being compiled
initIfaceTcRn $ loadSysInterface doc (nameModule name)
}
----------------
-loadWiredInHomeIface :: Name -> IfM lcl ()
--- A IfM function to load the home interface for a wired-in thing,
+-- | An 'IfM' function to load the home interface for a wired-in thing,
-- so that we're sure that we see its instance declarations and rules
+loadWiredInHomeIface :: Name -> IfM lcl ()
loadWiredInHomeIface name
= ASSERT( isWiredInName name )
- do { loadSysInterface doc (nameModule name); return () }
+ do loadSysInterface doc (nameModule name); return ()
where
doc = ptext SLIT("Need home interface for wired-in thing") <+> ppr name
----------------
+-- | A wrapper for 'loadInterface' that throws an exception if it fails
loadSysInterface :: SDoc -> Module -> IfM lcl ModIface
--- A wrapper for loadInterface that Throws an exception if it fails
loadSysInterface doc mod_name
= do { mb_iface <- loadInterface doc mod_name ImportBySystem
; case mb_iface of
%*********************************************************
\begin{code}
-loadInterface :: SDoc -> Module -> WhereFrom
+loadInterface :: SDoc -> Module -> WhereFrom
-> IfM lcl (MaybeErr Message ModIface)
+-- loadInterface looks in both the HPT and PIT for the required interface
+-- If not found, it loads it, and puts it in the PIT (always).
+
-- If it can't find a suitable interface file, we
-- a) modify the PackageIfaceTable to have an empty entry
-- (to avoid repeated complaints)
; traceIf (text "Considering whether to load" <+> ppr mod <+> ppr from)
-- Check whether we have the interface already
- ; case lookupIfaceByModule hpt (eps_PIT eps) mod of {
+ ; dflags <- getDOpts
+ ; case lookupIfaceByModule dflags hpt (eps_PIT eps) mod of {
Just iface
-> returnM (Succeeded iface) ; -- Already loaded
-- The (src_imp == mi_boot iface) test checks that the already-loaded
ImportByUser usr_boot -> usr_boot
ImportBySystem -> sys_boot
- ; mb_dep = lookupModuleEnv (eps_is_boot eps) mod
+ ; mb_dep = lookupUFM (eps_is_boot eps) (moduleName mod)
; sys_boot = case mb_dep of
Just (_, is_boot) -> is_boot
Nothing -> False
} -- based on the dependencies in directly-imported modules
-- READ THE MODULE IN
- ; let explicit | ImportByUser _ <- from = True
- | otherwise = False
- ; read_result <- findAndReadIface explicit doc_str mod hi_boot_file
- ; dflags <- getDOpts
+ ; read_result <- findAndReadIface doc_str mod hi_boot_file
; case read_result of {
Failed err -> do
- { let fake_iface = emptyModIface HomePackage mod
+ { let fake_iface = emptyModIface mod
; updateEps_ $ \eps ->
eps { eps_PIT = extendModuleEnv (eps_PIT eps) (mi_module fake_iface) fake_iface }
; returnM (Failed err) } ;
-- Found and parsed!
- Succeeded (iface, file_path) -- Sanity check:
- | ImportBySystem <- from, -- system-importing...
- isHomePackage (mi_package iface), -- ...a home-package module
- Nothing <- mb_dep -- ...that we know nothing about
+ Succeeded (iface, file_path) -- Sanity check:
+ | ImportBySystem <- from, -- system-importing...
+ modulePackageId (mi_module iface) == thisPackage dflags,
+ -- a home-package module...
+ Nothing <- mb_dep -- that we know nothing about
-> returnM (Failed (badDepMsg mod))
| otherwise ->
-- If we do loadExport first the wrong info gets into the cache (unless we
-- explicitly tag each export which seems a bit of a bore)
- ; ignore_prags <- doptM Opt_IgnoreInterfacePragmas
- ; new_eps_decls <- loadDecls ignore_prags (mi_decls iface)
- ; new_eps_insts <- mapM tcIfaceInst (mi_insts iface)
- ; new_eps_rules <- if ignore_prags
- then return []
- else mapM tcIfaceRule (mi_rules iface)
+ ; ignore_prags <- doptM Opt_IgnoreInterfacePragmas
+ ; new_eps_decls <- loadDecls ignore_prags (mi_decls iface)
+ ; new_eps_insts <- mapM tcIfaceInst (mi_insts iface)
+ ; new_eps_fam_insts <- mapM tcIfaceFamInst (mi_fam_insts iface)
+ ; new_eps_rules <- tcIfaceRules ignore_prags (mi_rules iface)
- ; let { final_iface = iface { mi_decls = panic "No mi_decls in PIT",
- mi_insts = panic "No mi_insts in PIT",
- mi_rules = panic "No mi_rules in PIT" } }
+ ; let { final_iface = iface {
+ mi_decls = panic "No mi_decls in PIT",
+ mi_insts = panic "No mi_insts in PIT",
+ mi_fam_insts = panic "No mi_fam_insts in PIT",
+ mi_rules = panic "No mi_rules in PIT"
+ } }
; updateEps_ $ \ eps ->
- eps { eps_PIT = extendModuleEnv (eps_PIT eps) mod final_iface,
- eps_PTE = addDeclsToPTE (eps_PTE eps) new_eps_decls,
- eps_rule_base = extendRuleBaseList (eps_rule_base eps) new_eps_rules,
- eps_inst_env = extendInstEnvList (eps_inst_env eps) new_eps_insts,
- eps_stats = addEpsInStats (eps_stats eps) (length new_eps_decls)
- (length new_eps_insts) (length new_eps_rules) }
+ eps {
+ eps_PIT = extendModuleEnv (eps_PIT eps) mod final_iface,
+ eps_PTE = addDeclsToPTE (eps_PTE eps) new_eps_decls,
+ eps_rule_base = extendRuleBaseList (eps_rule_base eps)
+ new_eps_rules,
+ eps_inst_env = extendInstEnvList (eps_inst_env eps)
+ new_eps_insts,
+ eps_fam_inst_env = extendFamInstEnvList (eps_fam_inst_env eps)
+ new_eps_fam_insts,
+ eps_mod_fam_inst_env
+ = let
+ fam_inst_env =
+ extendFamInstEnvList emptyFamInstEnv
+ new_eps_fam_insts
+ in
+ extendModuleEnv (eps_mod_fam_inst_env eps)
+ mod
+ fam_inst_env,
+ eps_stats = addEpsInStats (eps_stats eps)
+ (length new_eps_decls)
+ (length new_eps_insts) (length new_eps_rules) }
; return (Succeeded final_iface)
}}}}
badDepMsg mod
= hang (ptext SLIT("Interface file inconsistency:"))
- 2 (sep [ptext SLIT("home-package module") <+> quotes (ppr mod) <+> ptext SLIT("is mentioned,"),
- ptext SLIT("but does not appear in the dependencies of the interface")])
+ 2 (sep [ptext SLIT("home-package module") <+> quotes (ppr mod) <+> ptext SLIT("is mentioned is needed,"),
+ ptext SLIT("but is not among the dependencies of interfaces directly imported by the module being compiled")])
-----------------------------------------------------
-- Loading type/class/value decls
-- each binder with the right package info in it
-- All subsequent lookups, including crucially lookups during typechecking
-- the declaration itself, will find the fully-glorious Name
+--
+-- We handle ATs specially. They are not main declarations, but also not
+-- implict things (in particular, adding them to `implicitTyThings' would mess
+-- things up in the renaming/type checking of source programs).
-----------------------------------------------------
addDeclsToPTE :: PackageTypeEnv -> [(Name,TyThing)] -> PackageTypeEnv
; return (concat thingss)
}
-loadDecl :: Bool -- Don't load pragmas into the decl pool
+loadDecl :: Bool -- Don't load pragmas into the decl pool
-> Module
-> (Version, IfaceDecl)
- -> IfL [(Name,TyThing)] -- The list can be poked eagerly, but the
- -- TyThings are forkM'd thunks
+ -> IfL [(Name,TyThing)] -- The list can be poked eagerly, but the
+ -- TyThings are forkM'd thunks
loadDecl ignore_prags mod (_version, decl)
= do { -- Populate the name cache with final versions of all
-- the names associated with the decl
- main_name <- mk_new_bndr mod Nothing (ifName decl)
- ; implicit_names <- mapM (mk_new_bndr mod (Just main_name)) (ifaceDeclSubBndrs decl)
+ main_name <- mk_new_bndr mod (ifName decl)
+ ; traceIf (text "Loading decl for " <> ppr main_name)
+ ; implicit_names <- mapM (mk_new_bndr mod) (ifaceDeclSubBndrs decl)
-- Typecheck the thing, lazily
- -- NB. firstly, the laziness is there in case we never need the
+ -- NB. Firstly, the laziness is there in case we never need the
-- declaration (in one-shot mode), and secondly it is there so that
-- we don't look up the occurrence of a name before calling mk_new_bndr
-- on the binder. This is important because we must get the right name
-- which includes its nameParent.
- ; thing <- forkM doc (bumpDeclStats main_name >> tcIfaceDecl stripped_decl)
+
+ ; thing <- forkM doc $ do { bumpDeclStats main_name
+ ; tcIfaceDecl ignore_prags decl }
+
+ -- Populate the type environment with the implicitTyThings too
; let mini_env = mkOccEnv [(getOccName t, t) | t <- implicitTyThings thing]
lookup n = case lookupOccEnv mini_env (getOccName n) of
Just thing -> thing
- Nothing -> pprPanic "loadDecl" (ppr main_name <+> ppr n)
+ Nothing ->
+ pprPanic "loadDecl" (ppr main_name <+> ppr n $$ ppr (decl))
- ; returnM ((main_name, thing) : [(n, lookup n) | n <- implicit_names]) }
+ ; returnM $ (main_name, thing) : [(n, lookup n) | n <- implicit_names]
+ }
-- We build a list from the *known* names, with (lookup n) thunks
-- as the TyThings. That way we can extend the PTE without poking the
-- thunks
where
- stripped_decl | ignore_prags = discardDeclPrags decl
- | otherwise = decl
-
-- mk_new_bndr allocates in the name cache the final canonical
-- name for the thing, with the correct
-- * parent
-- * location
-- imported name, to fix the module correctly in the cache
- mk_new_bndr mod mb_parent occ
- = newGlobalBinder mod occ mb_parent
- (importedSrcLoc (moduleString mod))
+ mk_new_bndr mod occ
+ = newGlobalBinder mod occ
+ (importedSrcLoc (showSDoc (ppr (moduleName mod))))
+ -- ToDo: qualify with the package name if necessary
doc = ptext SLIT("Declaration for") <+> ppr (ifName decl)
-discardDeclPrags :: IfaceDecl -> IfaceDecl
-discardDeclPrags decl@(IfaceId {ifIdInfo = HasInfo _}) = decl { ifIdInfo = NoInfo }
-discardDeclPrags decl = decl
-
bumpDeclStats :: Name -> IfL () -- Record that one more declaration has actually been used
bumpDeclStats name
= do { traceIf (text "Loading decl for" <+> ppr name)
; updateEps_ (\eps -> let stats = eps_stats eps
in eps { eps_stats = stats { n_decls_out = n_decls_out stats + 1 } })
}
-
------------------
-ifaceDeclSubBndrs :: IfaceDecl -> [OccName]
--- *Excludes* the 'main' name, but *includes* the implicitly-bound names
--- Deeply revolting, because it has to predict what gets bound,
--- especially the question of whether there's a wrapper for a datacon
-
-ifaceDeclSubBndrs (IfaceClass {ifCtxt = sc_ctxt, ifName = cls_occ, ifSigs = sigs })
- = [tc_occ, dc_occ, dcww_occ] ++
- [op | IfaceClassOp op _ _ <- sigs] ++
- [mkSuperDictSelOcc n cls_occ | n <- [1..n_ctxt]]
- where
- n_ctxt = length sc_ctxt
- n_sigs = length sigs
- tc_occ = mkClassTyConOcc cls_occ
- dc_occ = mkClassDataConOcc cls_occ
- dcww_occ | is_newtype = mkDataConWrapperOcc dc_occ -- Newtypes have wrapper but no worker
- | otherwise = mkDataConWorkerOcc dc_occ -- Otherwise worker but no wrapper
- is_newtype = n_sigs + n_ctxt == 1 -- Sigh
-
-ifaceDeclSubBndrs (IfaceData {ifCons = IfAbstractTyCon})
- = []
--- Newtype
-ifaceDeclSubBndrs (IfaceData {ifCons = IfNewTyCon (IfVanillaCon { ifConOcc = con_occ,
- ifConFields = fields})})
- = fields ++ [con_occ, mkDataConWrapperOcc con_occ]
- -- Wrapper, no worker; see MkId.mkDataConIds
-
-ifaceDeclSubBndrs (IfaceData {ifCons = IfDataTyCon cons})
- = nub (concatMap fld_occs cons) -- Eliminate duplicate fields
- ++ concatMap dc_occs cons
- where
- fld_occs (IfVanillaCon { ifConFields = fields }) = fields
- fld_occs (IfGadtCon {}) = []
- dc_occs con_decl
- | has_wrapper = [con_occ, work_occ, wrap_occ]
- | otherwise = [con_occ, work_occ]
- where
- con_occ = ifConOcc con_decl
- strs = ifConStricts con_decl
- wrap_occ = mkDataConWrapperOcc con_occ
- work_occ = mkDataConWorkerOcc con_occ
- has_wrapper = any isMarkedStrict strs -- See MkId.mkDataConIds (sigh)
- -- ToDo: may miss strictness in existential dicts
-
-ifaceDeclSubBndrs _other = []
-
\end{code}
%*********************************************************
\begin{code}
-findAndReadIface :: Bool -- True <=> explicit user import
- -> SDoc -> Module
+findAndReadIface :: SDoc -> Module
-> IsBootInterface -- True <=> Look for a .hi-boot file
-- False <=> Look for .hi file
-> TcRnIf gbl lcl (MaybeErr Message (ModIface, FilePath))
-- It *doesn't* add an error to the monad, because
-- sometimes it's ok to fail... see notes with loadInterface
-findAndReadIface explicit doc_str mod_name hi_boot_file
+findAndReadIface doc_str mod hi_boot_file
= do { traceIf (sep [hsep [ptext SLIT("Reading"),
if hi_boot_file
then ptext SLIT("[boot]")
else empty,
ptext SLIT("interface for"),
- ppr mod_name <> semi],
+ ppr mod <> semi],
nest 4 (ptext SLIT("reason:") <+> doc_str)])
-- Check for GHC.Prim, and return its static interface
; dflags <- getDOpts
- ; let base_pkg = basePackageId (pkgState dflags)
- ; if mod_name == gHC_PRIM
- then returnM (Succeeded (ghcPrimIface{ mi_package = base_pkg },
- "<built in interface for GHC.Prim>"))
+ ; if mod == gHC_PRIM
+ then returnM (Succeeded (ghcPrimIface,
+ "<built in interface for GHC.Prim>"))
else do
-- Look for the file
; hsc_env <- getTopEnv
- ; mb_found <- ioToIOEnv (findHiFile hsc_env explicit mod_name hi_boot_file)
+ ; mb_found <- ioToIOEnv (findHiFile hsc_env mod hi_boot_file)
; case mb_found of {
Failed err -> do
{ traceIf (ptext SLIT("...not found"))
; dflags <- getDOpts
- ; returnM (Failed (cantFindError dflags mod_name err)) } ;
+ ; returnM (Failed (cannotFindInterface dflags
+ (moduleName mod) err)) } ;
- Succeeded (file_path, pkg) -> do
+ Succeeded file_path -> do
-- Found file, so read it
{ traceIf (ptext SLIT("readIFace") <+> text file_path)
- ; read_result <- readIface mod_name file_path hi_boot_file
+ ; read_result <- readIface mod file_path hi_boot_file
; case read_result of
Failed err -> returnM (Failed (badIfaceFile file_path err))
Succeeded iface
- | mi_module iface /= mod_name ->
- return (Failed (wrongIfaceModErr iface mod_name file_path))
+ | mi_module iface /= mod ->
+ return (Failed (wrongIfaceModErr iface mod file_path))
| otherwise ->
- returnM (Succeeded (iface{mi_package=pkg}, file_path))
+ returnM (Succeeded (iface, file_path))
-- Don't forget to fill in the package name...
}}}
-findHiFile :: HscEnv -> Bool -> Module -> IsBootInterface
- -> IO (MaybeErr FindResult (FilePath, PackageIdH))
-findHiFile hsc_env explicit mod_name hi_boot_file
- = do {
- -- In interactive or --make mode, we are *not allowed* to demand-load
- -- a home package .hi file. So don't even look for them.
- -- This helps in the case where you are sitting in eg. ghc/lib/std
- -- and start up GHCi - it won't complain that all the modules it tries
- -- to load are found in the home location.
- let { home_allowed = isOneShot (ghcMode (hsc_dflags hsc_env)) } ;
- maybe_found <- if home_allowed
- then findModule hsc_env mod_name explicit
- else findPackageModule hsc_env mod_name explicit;
-
- case maybe_found of
- Found loc pkg -> return (Succeeded (path, pkg))
- where
- path = addBootSuffix_maybe hi_boot_file (ml_hi_file loc)
-
- err -> return (Failed err)
- }
+findHiFile :: HscEnv -> Module -> IsBootInterface
+ -> IO (MaybeErr FindResult FilePath)
+findHiFile hsc_env mod hi_boot_file
+ = do
+ maybe_found <- findExactModule hsc_env mod
+ case maybe_found of
+ Found loc mod -> return (Succeeded path)
+ where
+ path = addBootSuffix_maybe hi_boot_file (ml_hi_file loc)
+ err -> return (Failed err)
\end{code}
@readIface@ tries just the one file.
\begin{code}
-readIface :: Module -> String -> IsBootInterface
+readIface :: Module -> FilePath -> IsBootInterface
-> TcRnIf gbl lcl (MaybeErr Message ModIface)
-- Failed err <=> file not found, or unreadable, or illegible
-- Succeeded iface <=> successfully found and parsed
readIface wanted_mod file_path is_hi_boot_file
= do { dflags <- getDOpts
- ; ioToIOEnv $ do
- { res <- tryMost (readBinIface file_path)
+ ; res <- tryMostM $ readBinIface file_path
; case res of
Right iface
| wanted_mod == actual_mod -> return (Succeeded iface)
err = hiModuleNameMismatchWarn wanted_mod actual_mod
Left exn -> return (Failed (text (showException exn)))
- }}
+ }
\end{code}
initExternalPackageState :: ExternalPackageState
initExternalPackageState
= EPS {
- eps_is_boot = emptyModuleEnv,
- eps_PIT = emptyPackageIfaceTable,
- eps_PTE = emptyTypeEnv,
- eps_inst_env = emptyInstEnv,
- eps_rule_base = mkRuleBase builtinRules,
+ eps_is_boot = emptyUFM,
+ eps_PIT = emptyPackageIfaceTable,
+ eps_PTE = emptyTypeEnv,
+ eps_inst_env = emptyInstEnv,
+ eps_fam_inst_env = emptyFamInstEnv,
+ eps_rule_base = mkRuleBase builtinRules,
-- Initialise the EPS rule pool with the built-in rules
+ eps_mod_fam_inst_env
+ = emptyModuleEnv,
eps_stats = EpsStats { n_ifaces_in = 0, n_decls_in = 0, n_decls_out = 0
, n_insts_in = 0, n_insts_out = 0
, n_rules_in = length builtinRules, n_rules_out = 0 }
\begin{code}
ghcPrimIface :: ModIface
ghcPrimIface
- = (emptyModIface HomePackage gHC_PRIM) {
+ = (emptyModIface gHC_PRIM) {
mi_exports = [(gHC_PRIM, ghcPrimExports)],
mi_decls = [],
mi_fixities = fixities,
\end{code}
+%************************************************************************
+%* *
+ Printing interfaces
+%* *
+%************************************************************************
+
+\begin{code}
+-- | Read binary interface, and print it out
+showIface :: HscEnv -> FilePath -> IO ()
+showIface hsc_env filename = do
+ -- skip the version check; we don't want to worry about profiled vs.
+ -- non-profiled interfaces, for example.
+ writeIORef v_IgnoreHiWay True
+ iface <- initTcRnIf 's' hsc_env () () $ readBinIface filename
+ printDump (pprModIface iface)
+\end{code}
+
+\begin{code}
+pprModIface :: ModIface -> SDoc
+-- Show a ModIface
+pprModIface iface
+ = vcat [ ptext SLIT("interface")
+ <+> ppr (mi_module iface) <+> pp_boot
+ <+> ppr (mi_mod_vers iface) <+> pp_sub_vers
+ <+> (if mi_orphan iface then ptext SLIT("[orphan module]") else empty)
+ <+> (if mi_finsts iface then ptext SLIT("[family instance module]") else empty)
+ <+> int opt_HiVersion
+ <+> ptext SLIT("where")
+ , vcat (map pprExport (mi_exports iface))
+ , pprDeps (mi_deps iface)
+ , vcat (map pprUsage (mi_usages iface))
+ , pprFixities (mi_fixities iface)
+ , vcat (map pprIfaceDecl (mi_decls iface))
+ , vcat (map ppr (mi_insts iface))
+ , vcat (map ppr (mi_rules iface))
+ , pprDeprecs (mi_deprecs iface)
+ ]
+ where
+ pp_boot | mi_boot iface = ptext SLIT("[boot]")
+ | otherwise = empty
+
+ exp_vers = mi_exp_vers iface
+ rule_vers = mi_rule_vers iface
+
+ pp_sub_vers | exp_vers == initialVersion && rule_vers == initialVersion = empty
+ | otherwise = brackets (ppr exp_vers <+> ppr rule_vers)
+\end{code}
+
+When printing export lists, we print like this:
+ Avail f f
+ AvailTC C [C, x, y] C(x,y)
+ AvailTC C [x, y] C!(x,y) -- Exporting x, y but not C
+
+\begin{code}
+pprExport :: IfaceExport -> SDoc
+pprExport (mod, items)
+ = hsep [ ptext SLIT("export"), ppr mod, hsep (map pp_avail items) ]
+ where
+ pp_avail :: GenAvailInfo OccName -> SDoc
+ pp_avail (Avail occ) = ppr occ
+ pp_avail (AvailTC _ []) = empty
+ pp_avail (AvailTC n (n':ns))
+ | n==n' = ppr n <> pp_export ns
+ | otherwise = ppr n <> char '|' <> pp_export (n':ns)
+
+ pp_export [] = empty
+ pp_export names = braces (hsep (map ppr names))
+
+pprUsage :: Usage -> SDoc
+pprUsage usage
+ = hsep [ptext SLIT("import"), ppr (usg_name usage),
+ int (usg_mod usage),
+ pp_export_version (usg_exports usage),
+ int (usg_rules usage),
+ pp_versions (usg_entities usage) ]
+ where
+ pp_versions nvs = hsep [ ppr n <+> int v | (n,v) <- nvs ]
+ pp_export_version Nothing = empty
+ pp_export_version (Just v) = int v
+
+pprDeps :: Dependencies -> SDoc
+pprDeps (Deps { dep_mods = mods, dep_pkgs = pkgs, dep_orphs = orphs,
+ dep_finsts = finsts })
+ = vcat [ptext SLIT("module dependencies:") <+> fsep (map ppr_mod mods),
+ ptext SLIT("package dependencies:") <+> fsep (map ppr pkgs),
+ ptext SLIT("orphans:") <+> fsep (map ppr orphs),
+ ptext SLIT("family instance modules:") <+> fsep (map ppr finsts)
+ ]
+ where
+ ppr_mod (mod_name, boot) = ppr mod_name <+> ppr_boot boot
+ ppr_boot True = text "[boot]"
+ ppr_boot False = empty
+
+pprIfaceDecl :: (Version, IfaceDecl) -> SDoc
+pprIfaceDecl (ver, decl)
+ = ppr_vers ver <+> ppr decl
+ where
+ -- Print the version for the decl
+ ppr_vers v | v == initialVersion = empty
+ | otherwise = int v
+
+pprFixities :: [(OccName, Fixity)] -> SDoc
+pprFixities [] = empty
+pprFixities fixes = ptext SLIT("fixities") <+> pprWithCommas pprFix fixes
+ where
+ pprFix (occ,fix) = ppr fix <+> ppr occ
+
+pprDeprecs NoDeprecs = empty
+pprDeprecs (DeprecAll txt) = ptext SLIT("Deprecate all") <+> doubleQuotes (ftext txt)
+pprDeprecs (DeprecSome prs) = ptext SLIT("Deprecate") <+> vcat (map pprDeprec prs)
+ where
+ pprDeprec (name, txt) = ppr name <+> doubleQuotes (ftext txt)
+\end{code}
+
+
%*********************************************************
%* *
\subsection{Errors}
hiModuleNameMismatchWarn :: Module -> Module -> Message
hiModuleNameMismatchWarn requested_mod read_mod =
- hsep [ ptext SLIT("Something is amiss; requested module name")
+ withPprStyle defaultUserStyle $
+ -- we want the Modules below to be qualified with package names,
+ -- so reset the PrintUnqualified setting.
+ hsep [ ptext SLIT("Something is amiss; requested module ")
, ppr requested_mod
, ptext SLIT("differs from name found in the interface file")
, ppr read_mod
]
where iface_file = doubleQuotes (text file_path)
\end{code}
+
projects / ghc-hetmet.git / blobdiff