347 lines
17 KiB
Haskell
347 lines
17 KiB
Haskell
{-# LANGUAGE NoImplicitPrelude #-}
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module Language.Haskell.Brittany.Internal.ParseExact
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( parseModule
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, parseModuleFromString
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)
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where
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import Language.Haskell.Brittany.Internal.Prelude
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import qualified Control.Monad
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import qualified Control.Monad.Trans.Except as Except
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import qualified GHC hiding ( parseModule )
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import qualified GHC.ByteOrder
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import qualified GHC.Data.Bag
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import qualified GHC.Data.StringBuffer
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import qualified GHC.Driver.Session
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import qualified GHC.Parser.Header
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import qualified GHC.Platform
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import qualified GHC.Settings
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import qualified GHC.Types.SrcLoc
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import qualified GHC.Utils.Error
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import qualified GHC.Utils.Fingerprint
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import qualified Language.Haskell.GHC.ExactPrint.Parsers
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as ExactPrint
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import qualified System.IO
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-- TODO why are redirecting to parseModuleFromString here?
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parseModule
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:: [String]
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-> System.IO.FilePath
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-> (GHC.DynFlags -> IO (Either String a))
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-> IO (Either String (GHC.ParsedSource, a))
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parseModule args fp dynCheck = do
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str <- System.IO.readFile fp
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parseModuleFromString args fp dynCheck str
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-- | Parses a Haskell module. Although this nominally requires IO, it is
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-- morally pure. It should have no observable effects.
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parseModuleFromString
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:: [String]
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-> System.IO.FilePath
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-> (GHC.DynFlags -> IO (Either String a))
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-> String
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-> IO (Either String (GHC.ParsedSource, a))
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parseModuleFromString arguments1 filePath checkDynFlags string =
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Except.runExceptT $ do
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let dynFlags1 = GHC.Driver.Session.gopt_set
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-- It feels like this should be either @Sf_Ignore@ or @Sf_None@, but both
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-- of those modes have trouble parsing safe imports (@import safe ...@).
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-- Neither passing in @"-XUnsafe"@ as a command line argument nor having
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-- @{-# LANGUAGE Unsafe #-}@ in the source file seem to help.
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initialDynFlags { GHC.Driver.Session.safeHaskell = GHC.Sf_Unsafe }
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GHC.Driver.Session.Opt_KeepRawTokenStream
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(dynFlags2, leftovers1, _) <-
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GHC.Driver.Session.parseDynamicFlagsCmdLine dynFlags1
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$ fmap GHC.Types.SrcLoc.noLoc arguments1
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handleLeftovers leftovers1
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let stringBuffer = GHC.Data.StringBuffer.stringToStringBuffer string
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arguments2 =
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GHC.Parser.Header.getOptions dynFlags2 stringBuffer filePath
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(dynFlags3, leftovers2, _) <- GHC.Driver.Session.parseDynamicFilePragma
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dynFlags2
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arguments2
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handleLeftovers leftovers2
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dynFlagsResult <- Except.ExceptT $ checkDynFlags dynFlags3
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let parseResult =
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ExactPrint.parseModuleFromStringInternal dynFlags3 filePath string
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case parseResult of
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Left errorMessages -> handleErrorMessages errorMessages
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-- Right parsedMod -> case ExactPrint.makeDeltaAst' parsedMod of
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-- res -> pure (res, dynFlagsResult)
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-- Right (L l (GHC.HsModule ann lay name xprt imp decls depr hdr)) ->
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-- case ExactPrint.runTransform (ExactPrint.balanceCommentsList decls) of
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-- (decls', _, _) ->
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-- pure
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-- ( L l (GHC.HsModule ann lay name xprt imp decls' depr hdr)
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-- , dynFlagsResult
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-- )
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Right res -> pure (res, dynFlagsResult)
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handleLeftovers
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:: Monad m => [GHC.Types.SrcLoc.Located String] -> Except.ExceptT String m ()
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handleLeftovers leftovers =
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Control.Monad.unless (null leftovers) . Except.throwE $ "leftovers: " <> show
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(fmap GHC.Types.SrcLoc.unLoc leftovers)
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handleErrorMessages
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:: Monad m => GHC.Utils.Error.ErrorMessages -> Except.ExceptT String m a
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handleErrorMessages =
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Except.throwE . mappend "errorMessages: " . show . GHC.Data.Bag.bagToList
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initialDynFlags :: GHC.Driver.Session.DynFlags
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initialDynFlags =
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GHC.Driver.Session.defaultDynFlags initialSettings initialLlvmConfig
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initialSettings :: GHC.Driver.Session.Settings
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initialSettings = GHC.Driver.Session.Settings
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{ GHC.Driver.Session.sGhcNameVersion = initialGhcNameVersion
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, GHC.Driver.Session.sFileSettings = initialFileSettings
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, GHC.Driver.Session.sTargetPlatform = initialTargetPlatform
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, GHC.Driver.Session.sToolSettings = initialToolSettings
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, GHC.Driver.Session.sPlatformMisc = initialPlatformMisc
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, GHC.Driver.Session.sRawSettings = []
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}
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initialFileSettings :: GHC.Driver.Session.FileSettings
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initialFileSettings = GHC.Driver.Session.FileSettings
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{ GHC.Driver.Session.fileSettings_ghciUsagePath = ""
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, GHC.Driver.Session.fileSettings_ghcUsagePath = ""
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, GHC.Driver.Session.fileSettings_globalPackageDatabase = ""
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, GHC.Driver.Session.fileSettings_tmpDir = ""
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, GHC.Driver.Session.fileSettings_toolDir = Nothing
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, GHC.Driver.Session.fileSettings_topDir = ""
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}
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initialGhcNameVersion :: GHC.Driver.Session.GhcNameVersion
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initialGhcNameVersion = GHC.Driver.Session.GhcNameVersion
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{ GHC.Driver.Session.ghcNameVersion_programName = ""
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, GHC.Driver.Session.ghcNameVersion_projectVersion = ""
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}
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initialPlatformMisc :: GHC.Driver.Session.PlatformMisc
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initialPlatformMisc = GHC.Driver.Session.PlatformMisc
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{ GHC.Driver.Session.platformMisc_ghcRTSWays = ""
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, GHC.Driver.Session.platformMisc_ghcRtsWithLibdw = False
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, GHC.Driver.Session.platformMisc_ghcWithInterpreter = False
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, GHC.Driver.Session.platformMisc_ghcWithSMP = False
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, GHC.Driver.Session.platformMisc_libFFI = False
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, GHC.Driver.Session.platformMisc_llvmTarget = ""
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, GHC.Driver.Session.platformMisc_targetPlatformString = ""
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}
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initialLlvmConfig :: GHC.Driver.Session.LlvmConfig
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initialLlvmConfig = GHC.Driver.Session.LlvmConfig
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{ GHC.Driver.Session.llvmPasses = []
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, GHC.Driver.Session.llvmTargets = []
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}
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_initialPlatformConstants :: GHC.Platform.PlatformConstants
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_initialPlatformConstants = GHC.Platform.PlatformConstants
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{ GHC.Platform.pc_AP_STACK_SPLIM = 0
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, GHC.Platform.pc_BITMAP_BITS_SHIFT = 0
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, GHC.Platform.pc_BLOCK_SIZE = 0
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, GHC.Platform.pc_BLOCKS_PER_MBLOCK = 0
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, GHC.Platform.pc_CINT_SIZE = 0
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, GHC.Platform.pc_CLONG_LONG_SIZE = 0
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, GHC.Platform.pc_CLONG_SIZE = 0
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, GHC.Platform.pc_CONTROL_GROUP_CONST_291 = 0
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, GHC.Platform.pc_ILDV_CREATE_MASK = 0
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, GHC.Platform.pc_ILDV_STATE_CREATE = 0
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, GHC.Platform.pc_ILDV_STATE_USE = 0
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, GHC.Platform.pc_LDV_SHIFT = 0
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, GHC.Platform.pc_MAX_CHARLIKE = 0
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, GHC.Platform.pc_MAX_Double_REG = 0
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, GHC.Platform.pc_MAX_Float_REG = 0
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, GHC.Platform.pc_MAX_INTLIKE = 0
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, GHC.Platform.pc_MAX_Long_REG = 0
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, GHC.Platform.pc_MAX_Real_Double_REG = 0
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, GHC.Platform.pc_MAX_Real_Float_REG = 0
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, GHC.Platform.pc_MAX_Real_Long_REG = 0
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, GHC.Platform.pc_MAX_Real_Vanilla_REG = 0
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, GHC.Platform.pc_MAX_Real_XMM_REG = 0
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, GHC.Platform.pc_MAX_SPEC_AP_SIZE = 0
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, GHC.Platform.pc_MAX_SPEC_SELECTEE_SIZE = 0
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, GHC.Platform.pc_MAX_Vanilla_REG = 0
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, GHC.Platform.pc_MAX_XMM_REG = 0
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, GHC.Platform.pc_MIN_CHARLIKE = 0
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, GHC.Platform.pc_MIN_INTLIKE = 0
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, GHC.Platform.pc_MIN_PAYLOAD_SIZE = 0
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, GHC.Platform.pc_MUT_ARR_PTRS_CARD_BITS = 0
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, GHC.Platform.pc_OFFSET_bdescr_blocks = 0
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, GHC.Platform.pc_OFFSET_bdescr_flags = 0
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, GHC.Platform.pc_OFFSET_bdescr_free = 0
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, GHC.Platform.pc_OFFSET_bdescr_start = 0
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, GHC.Platform.pc_OFFSET_Capability_r = 0
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, GHC.Platform.pc_OFFSET_CostCentreStack_mem_alloc = 0
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, GHC.Platform.pc_OFFSET_CostCentreStack_scc_count = 0
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, GHC.Platform.pc_OFFSET_StgArrBytes_bytes = 0
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, GHC.Platform.pc_OFFSET_stgEagerBlackholeInfo = 0
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, GHC.Platform.pc_OFFSET_StgEntCounter_allocd = 0
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, GHC.Platform.pc_OFFSET_StgEntCounter_allocs = 0
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, GHC.Platform.pc_OFFSET_StgEntCounter_entry_count = 0
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, GHC.Platform.pc_OFFSET_StgEntCounter_link = 0
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, GHC.Platform.pc_OFFSET_StgEntCounter_registeredp = 0
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, GHC.Platform.pc_OFFSET_StgFunInfoExtraFwd_arity = 0
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, GHC.Platform.pc_OFFSET_StgFunInfoExtraRev_arity = 0
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, GHC.Platform.pc_OFFSET_stgGCEnter1 = 0
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, GHC.Platform.pc_OFFSET_stgGCFun = 0
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, GHC.Platform.pc_OFFSET_StgHeader_ccs = 0
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, GHC.Platform.pc_OFFSET_StgHeader_ldvw = 0
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, GHC.Platform.pc_OFFSET_StgMutArrPtrs_ptrs = 0
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, GHC.Platform.pc_OFFSET_StgMutArrPtrs_size = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rCCCS = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rCurrentNursery = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rCurrentTSO = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rD1 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rD2 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rD3 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rD4 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rD5 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rD6 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rF1 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rF2 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rF3 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rF4 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rF5 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rF6 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rHp = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rHpAlloc = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rHpLim = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rL1 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR1 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR10 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR2 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR3 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR4 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR5 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR6 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR7 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR8 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rR9 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rSp = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rSpLim = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rXMM1 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rXMM2 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rXMM3 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rXMM4 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rXMM5 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rXMM6 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rYMM1 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rYMM2 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rYMM3 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rYMM4 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rYMM5 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rYMM6 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rZMM1 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rZMM2 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rZMM3 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rZMM4 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rZMM5 = 0
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, GHC.Platform.pc_OFFSET_StgRegTable_rZMM6 = 0
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, GHC.Platform.pc_OFFSET_StgSmallMutArrPtrs_ptrs = 0
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, GHC.Platform.pc_OFFSET_StgStack_sp = 0
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, GHC.Platform.pc_OFFSET_StgStack_stack = 0
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, GHC.Platform.pc_OFFSET_StgTSO_alloc_limit = 0
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, GHC.Platform.pc_OFFSET_StgTSO_cccs = 0
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, GHC.Platform.pc_OFFSET_StgTSO_stackobj = 0
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, GHC.Platform.pc_OFFSET_StgUpdateFrame_updatee = 0
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, GHC.Platform.pc_PROF_HDR_SIZE = 0
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, GHC.Platform.pc_REP_CostCentreStack_mem_alloc = 0
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, GHC.Platform.pc_REP_CostCentreStack_scc_count = 0
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, GHC.Platform.pc_REP_StgEntCounter_allocd = 0
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, GHC.Platform.pc_REP_StgEntCounter_allocs = 0
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, GHC.Platform.pc_REP_StgFunInfoExtraFwd_arity = 0
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, GHC.Platform.pc_REP_StgFunInfoExtraRev_arity = 0
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, GHC.Platform.pc_RESERVED_C_STACK_BYTES = 0
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, GHC.Platform.pc_RESERVED_STACK_WORDS = 0
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, GHC.Platform.pc_SIZEOF_CostCentreStack = 0
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, GHC.Platform.pc_SIZEOF_StgArrBytes_NoHdr = 0
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, GHC.Platform.pc_SIZEOF_StgFunInfoExtraRev = 0
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, GHC.Platform.pc_SIZEOF_StgMutArrPtrs_NoHdr = 0
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, GHC.Platform.pc_SIZEOF_StgSmallMutArrPtrs_NoHdr = 0
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, GHC.Platform.pc_SIZEOF_StgSMPThunkHeader = 0
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, GHC.Platform.pc_SIZEOF_StgUpdateFrame_NoHdr = 0
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, GHC.Platform.pc_STD_HDR_SIZE = 0
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, GHC.Platform.pc_TAG_BITS = 0
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, GHC.Platform.pc_TICKY_BIN_COUNT = 0
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, GHC.Platform.pc_WORD_SIZE = 0
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}
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-- initialPlatformMini :: GHC.Settings.PlatformMini
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-- initialPlatformMini = GHC.Settings.PlatformMini
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-- { GHC.Settings.platformMini_arch = GHC.Platform.ArchX86_64
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-- , GHC.Settings.platformMini_os = GHC.Platform.OSLinux
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-- }
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initialTargetPlatform :: GHC.Settings.Platform
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initialTargetPlatform = GHC.Settings.Platform
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{ GHC.Settings.platformArchOS = initialArchOS
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, GHC.Settings.platformByteOrder = GHC.ByteOrder.LittleEndian
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, GHC.Settings.platformHasGnuNonexecStack = False
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, GHC.Settings.platformHasIdentDirective = False
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, GHC.Settings.platformHasSubsectionsViaSymbols = False
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, GHC.Settings.platformIsCrossCompiling = False
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, GHC.Settings.platformLeadingUnderscore = False
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-- , GHC.Settings.platformMini = initialPlatformMini
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, GHC.Settings.platformTablesNextToCode = False
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, GHC.Settings.platformUnregisterised = False
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, GHC.Settings.platformWordSize = GHC.Platform.PW8
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, GHC.Settings.platform_constants = Nothing
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}
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initialArchOS :: GHC.Platform.ArchOS
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initialArchOS = GHC.Platform.ArchOS
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{ GHC.Platform.archOS_arch = GHC.Platform.ArchUnknown -- why do we need to specify these?
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, GHC.Platform.archOS_OS = GHC.Platform.OSUnknown -- why do we need to specify these?
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}
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initialToolSettings :: GHC.Settings.ToolSettings
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initialToolSettings = GHC.Settings.ToolSettings
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{ GHC.Settings.toolSettings_ccSupportsNoPie = False
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, GHC.Settings.toolSettings_extraGccViaCFlags = []
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, GHC.Settings.toolSettings_ldIsGnuLd = False
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, GHC.Settings.toolSettings_ldSupportsBuildId = False
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, GHC.Settings.toolSettings_ldSupportsCompactUnwind = False
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, GHC.Settings.toolSettings_ldSupportsFilelist = False
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, GHC.Settings.toolSettings_opt_a = []
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, GHC.Settings.toolSettings_opt_c = []
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, GHC.Settings.toolSettings_opt_cxx = []
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, GHC.Settings.toolSettings_opt_F = []
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, GHC.Settings.toolSettings_opt_i = []
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, GHC.Settings.toolSettings_opt_l = []
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, GHC.Settings.toolSettings_opt_L = []
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, GHC.Settings.toolSettings_opt_lc = []
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, GHC.Settings.toolSettings_opt_lcc = []
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, GHC.Settings.toolSettings_opt_lm = []
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, GHC.Settings.toolSettings_opt_lo = []
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, GHC.Settings.toolSettings_opt_P = []
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, GHC.Settings.toolSettings_opt_P_fingerprint =
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GHC.Utils.Fingerprint.fingerprint0
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, GHC.Settings.toolSettings_opt_windres = []
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, GHC.Settings.toolSettings_pgm_a = ("", [])
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, GHC.Settings.toolSettings_pgm_ar = ""
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, GHC.Settings.toolSettings_pgm_c = ""
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, GHC.Settings.toolSettings_pgm_dll = ("", [])
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, GHC.Settings.toolSettings_pgm_F = ""
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, GHC.Settings.toolSettings_pgm_i = ""
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, GHC.Settings.toolSettings_pgm_install_name_tool = ""
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, GHC.Settings.toolSettings_pgm_l = ("", [])
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, GHC.Settings.toolSettings_pgm_L = ""
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, GHC.Settings.toolSettings_pgm_lc = ("", [])
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, GHC.Settings.toolSettings_pgm_lcc = ("", [])
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, GHC.Settings.toolSettings_pgm_libtool = ""
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, GHC.Settings.toolSettings_pgm_lm = ("", [])
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, GHC.Settings.toolSettings_pgm_lo = ("", [])
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, GHC.Settings.toolSettings_pgm_otool = ""
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, GHC.Settings.toolSettings_pgm_P = ("", [])
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, GHC.Settings.toolSettings_pgm_ranlib = ""
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, GHC.Settings.toolSettings_pgm_T = ""
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, GHC.Settings.toolSettings_pgm_windres = ""
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}
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