Loading interface files
\begin{code}
-{-# OPTIONS -w #-}
--- The above warning supression flag is a temporary kludge.
--- While working on this module you are encouraged to remove it and fix
--- any warnings in the module. See
--- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
--- for details
-
module LoadIface (
loadInterface, loadInterfaceForName, loadWiredInHomeIface,
loadSrcInterface, loadSysInterface, loadOrphanModules,
import MkId
import Module
import OccName
-import SrcLoc
import Maybes
import ErrUtils
import Finder
import Panic
import Util
import FastString
+import Fingerprint
import Control.Monad
import Data.List
import Data.Maybe
-import Data.IORef
\end{code}
\begin{code}
-- | 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
+loadSrcInterface :: SDoc
+ -> ModuleName
+ -> IsBootInterface -- {-# SOURCE #-} ?
+ -> Maybe FastString -- "package", if any
+ -> RnM ModIface
+
+loadSrcInterface doc mod want_boot maybe_pkg = 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 <- liftIO $ findImportedModule hsc_env mod Nothing
+ res <- liftIO $ findImportedModule hsc_env mod maybe_pkg
case res of
Found _ mod -> do
mb_iface <- initIfaceTcRn $ loadInterface doc mod (ImportByUser want_boot)
{ this_mod <- getModule
; MASSERT2( not (nameIsLocalOrFrom this_mod name), ppr name <+> parens doc )
}
- ; initIfaceTcRn $ loadSysInterface doc (nameModule name)
+ ; ASSERT2( isExternalName name, ppr name )
+ initIfaceTcRn $ loadSysInterface doc (nameModule name)
}
-- | An 'IfM' function to load the home interface for a wired-in thing,
-- The (src_imp == mi_boot iface) test checks that the already-loaded
-- interface isn't a boot iface. This can conceivably happen,
-- if an earlier import had a before we got to real imports. I think.
- other -> do {
+ _ -> do {
let { hi_boot_file = case from of
ImportByUser usr_boot -> usr_boot
; return (Succeeded final_iface)
}}}}
+badDepMsg :: Module -> SDoc
badDepMsg mod
= hang (ptext (sLit "Interface file inconsistency:"))
2 (sep [ptext (sLit "home-package module") <+> quotes (ppr mod) <+> ptext (sLit "is needed,"),
addDeclsToPTE pte things = extendNameEnvList pte things
loadDecls :: Bool
- -> [(Version, IfaceDecl)]
+ -> [(Fingerprint, IfaceDecl)]
-> IfL [(Name,TyThing)]
loadDecls ignore_prags ver_decls
= do { mod <- getIfModule
loadDecl :: Bool -- Don't load pragmas into the decl pool
-> Module
- -> (Version, IfaceDecl)
+ -> (Fingerprint, IfaceDecl)
-> IfL [(Name,TyThing)] -- The list can be poked eagerly, but the
-- TyThings are forkM'd thunks
loadDecl ignore_prags mod (_version, decl)
-- All a bit too finely-balanced for my liking.
-- This mini-env and lookup function mediates between the
- -- *Name*s n and the map from *OccName*s to the implicit TyThings
+ --'Name's n and the map from 'OccName's to the implicit TyThings
; let mini_env = mkOccEnv [(getOccName t, t) | t <- implicitTyThings thing]
lookup n = case lookupOccEnv mini_env (getOccName n) of
Just thing -> thing
; mb_found <- liftIO (findExactModule hsc_env mod)
; case mb_found of {
- err | notFound err -> do
- { traceIf (ptext (sLit "...not found"))
- ; dflags <- getDOpts
- ; return (Failed (cannotFindInterface dflags
- (moduleName mod) err)) } ;
Found loc mod -> do
-- Found file, so read it
| otherwise ->
return (Succeeded (iface, file_path))
-- Don't forget to fill in the package name...
- }}}}
-
-notFound (Found _ _) = False
-notFound _ = True
+ }}
+ ; err -> do
+ { traceIf (ptext (sLit "...not found"))
+ ; dflags <- getDOpts
+ ; return (Failed (cannotFindInterface dflags
+ (moduleName mod) err)) }
+ }
+ }
\end{code}
@readIface@ tries just the one file.
-- 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
- ; res <- tryMostM $
+readIface wanted_mod file_path _
+ = do { res <- tryMostM $
readBinIface CheckHiWay QuietBinIFaceReading file_path
; case res of
Right iface
-- Show a ModIface
pprModIface iface
= vcat [ ptext (sLit "interface")
- <+> ppr (mi_module iface) <+> pp_boot
- <+> ppr (mi_mod_vers iface) <+> pp_sub_vers
+ <+> ppr (mi_module iface) <+> pp_boot
<+> (if mi_orphan iface then ptext (sLit "[orphan module]") else empty)
<+> (if mi_finsts iface then ptext (sLit "[family instance module]") else empty)
<+> (if mi_hpc iface then ptext (sLit "[hpc]") else empty)
<+> integer opt_HiVersion
- <+> ptext (sLit "where")
+ , nest 2 (text "interface hash:" <+> ppr (mi_iface_hash iface))
+ , nest 2 (text "ABI hash:" <+> ppr (mi_mod_hash iface))
+ , nest 2 (text "export-list hash:" <+> ppr (mi_exp_hash iface))
+ , nest 2 (text "orphan hash:" <+> ppr (mi_orphan_hash iface))
+ , nest 2 (ptext (sLit "where"))
, vcat (map pprExport (mi_exports iface))
, pprDeps (mi_deps iface)
, vcat (map pprUsage (mi_usages iface))
, vcat (map ppr (mi_fam_insts iface))
, vcat (map ppr (mi_rules iface))
, pprVectInfo (mi_vect_info iface)
- , pprDeprecs (mi_deprecs iface)
+ , ppr (mi_warns 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:
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
+pprUsage usage@UsagePackageModule{}
+ = hsep [ptext (sLit "import"), ppr (usg_mod usage),
+ ppr (usg_mod_hash usage)]
+pprUsage usage@UsageHomeModule{}
+ = hsep [ptext (sLit "import"), ppr (usg_mod_name usage),
+ ppr (usg_mod_hash usage)] $$
+ nest 2 (
+ maybe empty (\v -> text "exports: " <> ppr v) (usg_exports usage) $$
+ vcat [ ppr n <+> ppr v | (n,v) <- usg_entities usage ]
+ )
pprDeps :: Dependencies -> SDoc
pprDeps (Deps { dep_mods = mods, dep_pkgs = pkgs, dep_orphs = orphs,
ppr_boot True = text "[boot]"
ppr_boot False = empty
-pprIfaceDecl :: (Version, IfaceDecl) -> SDoc
+pprIfaceDecl :: (Fingerprint, 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
+ = ppr ver $$ nest 2 (ppr decl)
pprFixities :: [(OccName, Fixity)] -> SDoc
pprFixities [] = empty
, ptext (sLit "vectorised reused tycons:") <+> hsep (map ppr tyconsReuse)
]
-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)
+instance Outputable Warnings where
+ ppr = pprWarns
+
+pprWarns :: Warnings -> SDoc
+pprWarns NoWarnings = empty
+pprWarns (WarnAll txt) = ptext (sLit "Warn all") <+> ppr txt
+pprWarns (WarnSome prs) = ptext (sLit "Warnings")
+ <+> vcat (map pprWarning prs)
+ where pprWarning (name, txt) = ppr name <+> ppr txt
\end{code}
%*********************************************************
\begin{code}
+badIfaceFile :: String -> SDoc -> SDoc
badIfaceFile file err
= vcat [ptext (sLit "Bad interface file:") <+> text file,
nest 4 err]
, ppr read_mod
]
+wrongIfaceModErr :: ModIface -> Module -> String -> SDoc
wrongIfaceModErr iface mod_name file_path
= sep [ptext (sLit "Interface file") <+> iface_file,
ptext (sLit "contains module") <+> quotes (ppr (mi_module iface)) <> comma,
]
where iface_file = doubleQuotes (text file_path)
+homeModError :: Module -> ModLocation -> SDoc
homeModError mod location
= ptext (sLit "attempting to use module ") <> quotes (ppr mod)
<> (case ml_hs_file location of
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