X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FCmdLineOpts.lhs;h=8bf17a65495a43d68203e003af4ba8e93d14e663;hb=99f2474458f8eec90ee51305a3855df469cb023a;hp=a5ef6c44df83ef5cb8df3308695719dd70cf2637;hpb=4ca454b80a8620051f5ad8c93f7b447f809de075;p=ghc-hetmet.git diff --git a/ghc/compiler/main/CmdLineOpts.lhs b/ghc/compiler/main/CmdLineOpts.lhs index a5ef6c4..8bf17a6 100644 --- a/ghc/compiler/main/CmdLineOpts.lhs +++ b/ghc/compiler/main/CmdLineOpts.lhs @@ -1,11 +1,9 @@ % -% (c) The AQUA Project, Glasgow University, 1996 +% (c) The AQUA Project, Glasgow University, 1996-98 % \section[CmdLineOpts]{Things to do with command-line options} \begin{code} -#include "HsVersions.h" - module CmdLineOpts ( CoreToDo(..), SimplifierSwitch(..), @@ -16,19 +14,19 @@ module CmdLineOpts ( intSwitchSet, switchIsOn, - maybe_CompilingGhcInternals, - opt_AllDemanded, opt_AllStrict, + opt_AllowOverlappingInstances, + opt_AllowUndecidableInstances, opt_AutoSccsOnAllToplevs, opt_AutoSccsOnExportedToplevs, opt_AutoSccsOnIndividualCafs, - opt_CompilingGhcInternals, opt_D_dump_absC, opt_D_dump_asm, - opt_D_dump_deforest, opt_D_dump_deriv, opt_D_dump_ds, opt_D_dump_flatC, + opt_D_dump_inlinings, + opt_D_dump_foreign, opt_D_dump_occur_anal, opt_D_dump_rdr, opt_D_dump_realC, @@ -41,89 +39,90 @@ module CmdLineOpts ( opt_D_dump_tc, opt_D_show_passes, opt_D_show_rn_trace, + opt_D_show_rn_imports, opt_D_simplifier_stats, opt_D_source_stats, opt_D_verbose_core2core, opt_D_verbose_stg2stg, + opt_DictsStrict, opt_DoCoreLinting, opt_DoStgLinting, opt_DoSemiTagging, opt_DoEtaReduction, opt_DoTickyProfiling, + opt_EmitCExternDecls, opt_EnsureSplittableC, opt_FoldrBuildOn, - opt_FoldrBuildTrace, - opt_ForConcurrent, opt_GlasgowExts, opt_GranMacros, opt_HiMap, + opt_HiVersion, opt_IgnoreIfacePragmas, - opt_IgnoreStrictnessPragmas, - opt_IrrefutableEverything, opt_IrrefutableTuples, opt_LiberateCaseThreshold, + opt_MaxContextReductionDepth, + opt_MultiParamClasses, + opt_NoHiCheck, opt_NoImplicitPrelude, + opt_NoPreInlining, opt_NumbersStrict, opt_OmitBlackHoling, - opt_OmitDefaultInstanceMethods, opt_OmitInterfacePragmas, - opt_PprStyle_All, + opt_PprStyle_NoPrags, opt_PprStyle_Debug, - opt_PprStyle_User, opt_PprUserLength, opt_ProduceC, opt_ProduceHi, opt_ProduceS, - opt_ReportWhyUnfoldingsDisallowed, - opt_ReturnInRegsThreshold, + opt_ProduceExportCStubs, + opt_ProduceExportHStubs, + opt_ReportCompile, opt_SccGroup, opt_SccProfilingOn, - opt_ShowImportSpecs, - opt_ShowPragmaNameErrs, - opt_SigsRequired, opt_SourceUnchanged, - opt_SpecialiseAll, - opt_SpecialiseImports, - opt_SpecialiseOverloaded, - opt_SpecialiseTrace, - opt_SpecialiseUnboxed, opt_StgDoLetNoEscapes, + opt_Parallel, opt_InterfaceUnfoldThreshold, + opt_UnfoldCasms, opt_UnfoldingCreationThreshold, opt_UnfoldingConDiscount, opt_UnfoldingUseThreshold, + opt_UnfoldingKeenessFactor, opt_Verbose, + opt_WarnNameShadowing, - opt_WarnUnusedNames, - opt_WarnIncompletePatterns, opt_WarnOverlappedPatterns, + opt_WarnUnusedMatches, + opt_WarnUnusedBinds, + opt_WarnUnusedImports, + opt_WarnIncompletePatterns, + opt_WarnOverlappingPatterns, + opt_WarnSimplePatterns, + opt_WarnTypeDefaults, + opt_WarnMissingMethods, + opt_WarnDuplicateExports, + opt_WarnHiShadows, + opt_WarnMissingSigs, opt_PruneTyDecls, opt_PruneInstDecls, - opt_D_show_unused_imports, - opt_D_show_rn_stats, - - all_toplev_ids_visible + opt_D_show_rn_stats ) where -IMPORT_1_3(Array(array, (//))) -#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ <= 201 -import PreludeGlaST -- bad bad bad boy, Will (_Array internals) -#else +#include "HsVersions.h" + +import Array ( array, (//) ) import GlaExts -import ArrBase --- 2.04 and later exports Lift from GlaExts -#if __GLASGOW_HASKELL__ < 204 -import PrelBase (Lift(..)) -#endif -#endif import Argv - -CHK_Ubiq() -- debugging consistency check - import Constants -- Default values for some flags import Maybes ( assocMaybe, firstJust, maybeToBool ) -import Util ( startsWith, panic, panic#, assertPanic ) +import Panic ( panic, panic# ) + +#if __GLASGOW_HASKELL__ < 301 +import ArrBase ( Array(..) ) +#else +import PrelArr ( Array(..) ) +#endif \end{code} A command-line {\em switch} is (generally) either on or off; e.g., the @@ -171,7 +170,6 @@ data CoreToDo -- These are diff core-to-core passes, | CoreDoStaticArgs | CoreDoStrictness | CoreDoSpecialising - | CoreDoDeforest | CoreDoFoldrBuildWorkerWrapper | CoreDoFoldrBuildWWAnal \end{code} @@ -194,7 +192,6 @@ data SimplifierSwitch | SimplOkToFloatPrimOps | SimplAlwaysFloatLetsFromLets | SimplDoCaseElim - | SimplReuseCon | SimplCaseOfCase | SimplLetToCase | SimplMayDeleteConjurableIds @@ -213,33 +210,14 @@ data SimplifierSwitch -- do unfoldings that *must* be done -- (to saturate constructors and primitives) - | ShowSimplifierProgress -- report counts on every interation - | MaxSimplifierIterations Int - | KeepSpecPragmaIds -- We normally *toss* Ids we can do without - | KeepUnusedBindings - | SimplNoLetFromCase -- used when turning off floating entirely | SimplNoLetFromApp -- (for experimentation only) WDP 95/10 | SimplNoLetFromStrictLet - | SimplDontFoldBackAppend - -- we fold `foldr (:)' back into flip (++), - -- but we *don't* want to do it when compiling - -- List.hs, otherwise - -- xs ++ ys = foldr (:) ys xs - -- {- via our loopback -} - -- xs ++ ys = xs ++ ys - -- Oops! - -- So only use this flag inside List.hs - -- (Sigh, what a HACK, Andy. WDP 96/01) - | SimplCaseMerge - | SimplCaseScrutinee -- This flag tells that the expression being simplified is - -- the scrutinee of a case expression, so we should - -- apply the scrutinee discount when considering inlinings. - -- See SimplVar.lhs + | SimplPleaseClone \end{code} %************************************************************************ @@ -249,10 +227,11 @@ data SimplifierSwitch %************************************************************************ \begin{code} -lookUp :: FAST_STRING -> Bool -lookup_int :: String -> Maybe Int -lookup_def_int :: String -> Int -> Int -lookup_str :: String -> Maybe String +lookUp :: FAST_STRING -> Bool +lookup_int :: String -> Maybe Int +lookup_def_int :: String -> Int -> Int +lookup_def_float :: String -> Float -> Float +lookup_str :: String -> Maybe String lookUp sw = maybeToBool (assoc_opts sw) @@ -266,24 +245,46 @@ lookup_def_int sw def = case (lookup_str sw) of Nothing -> def -- Use default Just xx -> read xx +lookup_def_float sw def = case (lookup_str sw) of + Nothing -> def -- Use default + Just xx -> read xx + assoc_opts = assocMaybe [ (a, True) | a <- argv ] unpacked_opts = map _UNPK_ argv + +{- + Putting the compiler options into temporary at-files + may turn out to be necessary later on if we turn hsc into + a pure Win32 application where I think there's a command-line + length limit of 255. unpacked_opts understands the @ option. + +assoc_opts = assocMaybe [ (_PK_ a, True) | a <- unpacked_opts ] + +unpacked_opts :: [String] +unpacked_opts = + concat $ + map (expandAts) $ + map _UNPK_ argv + where + expandAts ('@':fname) = words (unsafePerformIO (readFile fname)) + expandAts l = [l] +-} \end{code} \begin{code} -opt_AllDemanded = lookUp SLIT("-fall-demanded") opt_AllStrict = lookUp SLIT("-fall-strict") +opt_AllowOverlappingInstances = lookUp SLIT("-fallow-overlapping-instances") +opt_AllowUndecidableInstances = lookUp SLIT("-fallow-undecidable-instances") opt_AutoSccsOnAllToplevs = lookUp SLIT("-fauto-sccs-on-all-toplevs") opt_AutoSccsOnExportedToplevs = lookUp SLIT("-fauto-sccs-on-exported-toplevs") opt_AutoSccsOnIndividualCafs = lookUp SLIT("-fauto-sccs-on-individual-cafs") -opt_CompilingGhcInternals = maybeToBool maybe_CompilingGhcInternals -maybe_CompilingGhcInternals = lookup_str "-fcompiling-ghc-internals=" opt_D_dump_absC = lookUp SLIT("-ddump-absC") opt_D_dump_asm = lookUp SLIT("-ddump-asm") -opt_D_dump_deforest = lookUp SLIT("-ddump-deforest") opt_D_dump_deriv = lookUp SLIT("-ddump-deriv") opt_D_dump_ds = lookUp SLIT("-ddump-ds") opt_D_dump_flatC = lookUp SLIT("-ddump-flatC") +opt_D_dump_inlinings = lookUp SLIT("-ddump-inlinings") +opt_D_dump_foreign = lookUp SLIT("-ddump-foreign-stubs") opt_D_dump_occur_anal = lookUp SLIT("-ddump-occur-anal") opt_D_dump_rdr = lookUp SLIT("-ddump-rdr") opt_D_dump_realC = lookUp SLIT("-ddump-realC") @@ -296,95 +297,84 @@ opt_D_dump_stranal = lookUp SLIT("-ddump-stranal") opt_D_dump_tc = lookUp SLIT("-ddump-tc") opt_D_show_passes = lookUp SLIT("-dshow-passes") opt_D_show_rn_trace = lookUp SLIT("-dshow-rn-trace") +opt_D_show_rn_imports = lookUp SLIT("-dshow-rn-imports") opt_D_simplifier_stats = lookUp SLIT("-dsimplifier-stats") opt_D_source_stats = lookUp SLIT("-dsource-stats") opt_D_verbose_core2core = lookUp SLIT("-dverbose-simpl") opt_D_verbose_stg2stg = lookUp SLIT("-dverbose-stg") +opt_DictsStrict = lookUp SLIT("-fdicts-strict") opt_DoCoreLinting = lookUp SLIT("-dcore-lint") opt_DoStgLinting = lookUp SLIT("-dstg-lint") +opt_DoEtaReduction = lookUp SLIT("-fdo-eta-reduction") opt_DoSemiTagging = lookUp SLIT("-fsemi-tagging") opt_DoTickyProfiling = lookUp SLIT("-fticky-ticky") -opt_DoEtaReduction = lookUp SLIT("-fdo-eta-reduction") +opt_EmitCExternDecls = lookUp SLIT("-femit-extern-decls") opt_EnsureSplittableC = lookUp SLIT("-fglobalise-toplev-names") opt_FoldrBuildOn = lookUp SLIT("-ffoldr-build-on") -opt_FoldrBuildTrace = lookUp SLIT("-ffoldr-build-trace") -opt_ForConcurrent = lookUp SLIT("-fconcurrent") opt_GranMacros = lookUp SLIT("-fgransim") opt_GlasgowExts = lookUp SLIT("-fglasgow-exts") ---UNUSED:opt_Haskell_1_3 = lookUp SLIT("-fhaskell-1.3") -opt_HiMap = lookup_str "-himap=" -- file saying where to look for .hi files +opt_HiMap = lookup_str "-himap=" -- file saying where to look for .hi files +opt_HiVersion = lookup_def_int "-fhi-version=" 0 -- what version we're compiling. opt_IgnoreIfacePragmas = lookUp SLIT("-fignore-interface-pragmas") -opt_IgnoreStrictnessPragmas = lookUp SLIT("-fignore-strictness-pragmas") -opt_IrrefutableEverything = lookUp SLIT("-firrefutable-everything") opt_IrrefutableTuples = lookUp SLIT("-firrefutable-tuples") +opt_MaxContextReductionDepth = lookup_def_int "-fcontext-stack" mAX_CONTEXT_REDUCTION_DEPTH +opt_MultiParamClasses = opt_GlasgowExts +opt_NoHiCheck = lookUp SLIT("-fno-hi-version-check") opt_NoImplicitPrelude = lookUp SLIT("-fno-implicit-prelude") +opt_NoPreInlining = lookUp SLIT("-fno-pre-inlining") opt_NumbersStrict = lookUp SLIT("-fnumbers-strict") opt_OmitBlackHoling = lookUp SLIT("-dno-black-holing") -opt_OmitDefaultInstanceMethods = lookUp SLIT("-fomit-default-instance-methods") opt_OmitInterfacePragmas = lookUp SLIT("-fomit-interface-pragmas") -opt_PprStyle_All = lookUp SLIT("-dppr-all") +opt_PprStyle_NoPrags = lookUp SLIT("-dppr-noprags") opt_PprStyle_Debug = lookUp SLIT("-dppr-debug") -opt_PprStyle_User = lookUp SLIT("-dppr-user") opt_PprUserLength = lookup_def_int "-dppr-user-length" 5 --ToDo: give this a name opt_ProduceC = lookup_str "-C=" opt_ProduceS = lookup_str "-S=" +opt_ProduceExportCStubs = lookup_str "-F=" +opt_ProduceExportHStubs = lookup_str "-FH=" opt_ProduceHi = lookup_str "-hifile=" -- the one to produce this time -opt_ReportWhyUnfoldingsDisallowed= lookUp SLIT("-freport-disallowed-unfoldings") +opt_ReportCompile = lookUp SLIT("-freport-compile") opt_SccProfilingOn = lookUp SLIT("-fscc-profiling") -opt_ShowImportSpecs = lookUp SLIT("-fshow-import-specs") -opt_ShowPragmaNameErrs = lookUp SLIT("-fshow-pragma-name-errs") -opt_SigsRequired = lookUp SLIT("-fsignatures-required") opt_SourceUnchanged = lookUp SLIT("-fsource-unchanged") -opt_SpecialiseAll = lookUp SLIT("-fspecialise-all") -opt_SpecialiseImports = lookUp SLIT("-fspecialise-imports") -opt_SpecialiseOverloaded = lookUp SLIT("-fspecialise-overloaded") -opt_SpecialiseTrace = lookUp SLIT("-ftrace-specialisation") -opt_SpecialiseUnboxed = lookUp SLIT("-fspecialise-unboxed") opt_StgDoLetNoEscapes = lookUp SLIT("-flet-no-escape") -opt_ReturnInRegsThreshold = lookup_int "-freturn-in-regs-threshold" +opt_Parallel = lookUp SLIT("-fparallel") opt_SccGroup = lookup_str "-G=" opt_Verbose = lookUp SLIT("-v") +opt_UnfoldCasms = lookUp SLIT("-funfold-casms-in-hi-file") opt_InterfaceUnfoldThreshold = lookup_def_int "-funfolding-interface-threshold" iNTERFACE_UNFOLD_THRESHOLD opt_UnfoldingCreationThreshold = lookup_def_int "-funfolding-creation-threshold" uNFOLDING_CREATION_THRESHOLD opt_UnfoldingUseThreshold = lookup_def_int "-funfolding-use-threshold" uNFOLDING_USE_THRESHOLD opt_UnfoldingConDiscount = lookup_def_int "-funfolding-con-discount" uNFOLDING_CON_DISCOUNT_WEIGHT opt_LiberateCaseThreshold = lookup_def_int "-fliberate-case-threshold" lIBERATE_CASE_THRESHOLD +opt_UnfoldingKeenessFactor = lookup_def_float "-funfolding-keeness-factor" uNFOLDING_KEENESS_FACTOR opt_WarnNameShadowing = lookUp SLIT("-fwarn-name-shadowing") -opt_WarnIncompletePatterns = not (lookUp SLIT("-fno-warn-incomplete-patterns")) -opt_WarnOverlappedPatterns = not (lookUp SLIT("-fno-warn-overlapped-patterns")) -opt_WarnUnusedNames = lookUp SLIT("-fwarn-unused-names") +opt_WarnHiShadows = lookUp SLIT("-fwarn-hi-shadowing") +opt_WarnIncompletePatterns = lookUp SLIT("-fwarn-incomplete-patterns") +opt_WarnOverlappingPatterns = lookUp SLIT("-fwarn-overlapping-patterns") +opt_WarnSimplePatterns = lookUp SLIT("-fwarn-simple-patterns") +opt_WarnTypeDefaults = lookUp SLIT("-fwarn-type-defaults") +opt_WarnUnusedMatches = lookUp SLIT("-fwarn-unused-matches") +opt_WarnUnusedBinds = lookUp SLIT("-fwarn-unused-binds") +opt_WarnUnusedImports = lookUp SLIT("-fwarn-unused-imports") +opt_WarnMissingMethods = lookUp SLIT("-fwarn-missing-methods") +opt_WarnDuplicateExports = lookUp SLIT("-fwarn-duplicate-exports") +opt_WarnMissingSigs = lookUp SLIT("-fwarn-missing-signatures") opt_PruneTyDecls = not (lookUp SLIT("-fno-prune-tydecls")) opt_PruneInstDecls = not (lookUp SLIT("-fno-prune-instdecls")) -opt_D_show_unused_imports = lookUp SLIT("-dshow-unused-imports") opt_D_show_rn_stats = lookUp SLIT("-dshow-rn-stats") -- opt_UnfoldingOverrideThreshold = lookup_int "-funfolding-override-threshold" \end{code} - -\begin{code} -all_toplev_ids_visible :: Bool -all_toplev_ids_visible = - not opt_OmitInterfacePragmas || -- Pragmas can make them visible - opt_EnsureSplittableC || -- Splitting requires visiblilty - opt_AutoSccsOnAllToplevs -- ditto for profiling - -- (ToDo: fix up the auto-annotation - -- pass in the desugarer to avoid having - -- to do this) - -\end{code} - - - \begin{code} classifyOpts :: ([CoreToDo], -- Core-to-Core processing spec [StgToDo]) -- STG-to-STG processing spec classifyOpts = sep argv [] [] -- accumulators... where - sep :: [FAST_STRING] -- cmd-line opts (input) + sep :: [FAST_STRING] -- cmd-line opts (input) -> [CoreToDo] -> [StgToDo] -- to_do accumulators -> ([CoreToDo], [StgToDo]) -- result @@ -393,13 +383,10 @@ classifyOpts = sep argv [] [] -- accumulators... # define CORE_TD(to_do) sep opts (to_do:core_td) stg_td # define STG_TD(to_do) sep opts core_td (to_do:stg_td) -# define IGNORE_ARG() sep opts core_td stg_td sep (opt1:opts) core_td stg_td - = - case (_UNPK_ opt1) of -- the non-"just match a string" options are at the end... - - ',' : _ -> IGNORE_ARG() -- it is for the parser + = case (_UNPK_ opt1) of -- the non-"just match a string" options are at the end... + ',' : _ -> sep opts core_td stg_td -- it is for the parser "-fsimplify" -> -- gather up SimplifierSwitches specially... simpl_sep opts defaultSimplSwitches core_td stg_td @@ -413,7 +400,6 @@ classifyOpts = sep argv [] [] -- accumulators... "-fstatic-args" -> CORE_TD(CoreDoStaticArgs) "-fstrictness" -> CORE_TD(CoreDoStrictness) "-fspecialise" -> CORE_TD(CoreDoSpecialising) - "-fdeforest" -> CORE_TD(CoreDoDeforest) "-ffoldr-build-worker-wrapper" -> CORE_TD(CoreDoFoldrBuildWorkerWrapper) "-ffoldr-build-ww-anal" -> CORE_TD(CoreDoFoldrBuildWWAnal) @@ -424,14 +410,14 @@ classifyOpts = sep argv [] [] -- accumulators... "-fmassage-stg-for-profiling" -> STG_TD(StgDoMassageForProfiling) _ -> -- NB: the driver is really supposed to handle bad options - IGNORE_ARG() + sep opts core_td stg_td ---------------- - simpl_sep :: [FAST_STRING] -- cmd-line opts (input) - -> [SimplifierSwitch] -- simplifier-switch accumulator - -> [CoreToDo] -> [StgToDo] -- to_do accumulators - -> ([CoreToDo], [StgToDo]) -- result + simpl_sep :: [FAST_STRING] -- cmd-line opts (input) + -> [SimplifierSwitch] -- simplifier-switch accumulator + -> [CoreToDo] -> [StgToDo] -- to_do accumulators + -> ([CoreToDo], [StgToDo]) -- result -- "simpl_sep" tailcalls "sep" once it's seen one set -- of SimplifierSwitches for a CoreDoSimplify. @@ -454,7 +440,6 @@ classifyOpts = sep argv [] [] -- accumulators... # define SIMPL_SW(sw) simpl_sep opts (sw:simpl_sw) core_td stg_td -- the non-"just match a string" options are at the end... - "-fshow-simplifier-progress" -> SIMPL_SW(ShowSimplifierProgress) "-fcode-duplication-ok" -> SIMPL_SW(SimplOkToDupCode) "-ffloat-lets-exposing-whnf" -> SIMPL_SW(SimplFloatLetsExposingWHNF) "-ffloat-primops-ok" -> SIMPL_SW(SimplOkToFloatPrimOps) @@ -462,22 +447,19 @@ classifyOpts = sep argv [] [] -- accumulators... "-fdo-case-elim" -> SIMPL_SW(SimplDoCaseElim) "-fdo-lambda-eta-expansion" -> SIMPL_SW(SimplDoLambdaEtaExpansion) "-fdo-foldr-build" -> SIMPL_SW(SimplDoFoldrBuild) - "-fdo-not-fold-back-append" -> SIMPL_SW(SimplDontFoldBackAppend) "-fdo-arity-expand" -> SIMPL_SW(SimplDoArityExpand) "-fdo-inline-foldr-build" -> SIMPL_SW(SimplDoInlineFoldrBuild) - "-freuse-con" -> SIMPL_SW(SimplReuseCon) "-fcase-of-case" -> SIMPL_SW(SimplCaseOfCase) "-fcase-merge" -> SIMPL_SW(SimplCaseMerge) "-flet-to-case" -> SIMPL_SW(SimplLetToCase) "-fpedantic-bottoms" -> SIMPL_SW(SimplPedanticBottoms) - "-fkeep-spec-pragma-ids" -> SIMPL_SW(KeepSpecPragmaIds) - "-fkeep-unused-bindings" -> SIMPL_SW(KeepUnusedBindings) "-fmay-delete-conjurable-ids" -> SIMPL_SW(SimplMayDeleteConjurableIds) "-fessential-unfoldings-only" -> SIMPL_SW(EssentialUnfoldingsOnly) "-fignore-inline-pragma" -> SIMPL_SW(IgnoreINLINEPragma) "-fno-let-from-case" -> SIMPL_SW(SimplNoLetFromCase) "-fno-let-from-app" -> SIMPL_SW(SimplNoLetFromApp) "-fno-let-from-strict-let" -> SIMPL_SW(SimplNoLetFromStrictLet) + "-fclone-binds" -> SIMPL_SW(SimplPleaseClone) o | starts_with_msi -> SIMPL_SW(MaxSimplifierIterations (read after_msi)) where @@ -511,7 +493,6 @@ tagOf_SimplSwitch SimplFloatLetsExposingWHNF = ILIT(1) tagOf_SimplSwitch SimplOkToFloatPrimOps = ILIT(2) tagOf_SimplSwitch SimplAlwaysFloatLetsFromLets = ILIT(3) tagOf_SimplSwitch SimplDoCaseElim = ILIT(4) -tagOf_SimplSwitch SimplReuseCon = ILIT(5) tagOf_SimplSwitch SimplCaseOfCase = ILIT(6) tagOf_SimplSwitch SimplLetToCase = ILIT(7) tagOf_SimplSwitch SimplMayDeleteConjurableIds = ILIT(9) @@ -522,22 +503,18 @@ tagOf_SimplSwitch SimplDoInlineFoldrBuild = ILIT(14) tagOf_SimplSwitch IgnoreINLINEPragma = ILIT(15) tagOf_SimplSwitch SimplDoLambdaEtaExpansion = ILIT(16) tagOf_SimplSwitch EssentialUnfoldingsOnly = ILIT(19) -tagOf_SimplSwitch ShowSimplifierProgress = ILIT(20) tagOf_SimplSwitch (MaxSimplifierIterations _) = ILIT(21) -tagOf_SimplSwitch KeepSpecPragmaIds = ILIT(25) -tagOf_SimplSwitch KeepUnusedBindings = ILIT(26) tagOf_SimplSwitch SimplNoLetFromCase = ILIT(27) tagOf_SimplSwitch SimplNoLetFromApp = ILIT(28) tagOf_SimplSwitch SimplNoLetFromStrictLet = ILIT(29) -tagOf_SimplSwitch SimplDontFoldBackAppend = ILIT(30) tagOf_SimplSwitch SimplCaseMerge = ILIT(31) -tagOf_SimplSwitch SimplCaseScrutinee = ILIT(32) +tagOf_SimplSwitch SimplPleaseClone = ILIT(32) -- If you add anything here, be sure to change lAST_SIMPL_SWITCH_TAG, too! tagOf_SimplSwitch _ = panic# "tagOf_SimplSwitch" -lAST_SIMPL_SWITCH_TAG = IBOX(tagOf_SimplSwitch SimplCaseScrutinee) +lAST_SIMPL_SWITCH_TAG = IBOX(tagOf_SimplSwitch SimplPleaseClone) \end{code} %************************************************************************ @@ -547,22 +524,6 @@ lAST_SIMPL_SWITCH_TAG = IBOX(tagOf_SimplSwitch SimplCaseScrutinee) %************************************************************************ \begin{code} -#if __GLASGOW_HASKELL__ == 201 -# define ARRAY Array -# define LIFT GHCbase.Lift -# define SET_TO =: -(=:) a b = (a,b) -#elif __GLASGOW_HASKELL__ >= 202 -# define ARRAY Array -# define LIFT Lift -# define SET_TO =: -(=:) a b = (a,b) -#else -# define ARRAY _Array -# define LIFT _Lift -# define SET_TO := -#endif - isAmongSimpl :: [SimplifierSwitch] -> SimplifierSwitch -> SwitchResult isAmongSimpl on_switches -- Switches mentioned later occur *earlier* @@ -578,20 +539,24 @@ isAmongSimpl on_switches -- Switches mentioned later occur *earlier* all_undefined) // defined_elems - all_undefined = [ i SET_TO SwBool False | i <- [0 .. lAST_SIMPL_SWITCH_TAG ] ] + all_undefined = [ (i, SwBool False) | i <- [0 .. lAST_SIMPL_SWITCH_TAG ] ] defined_elems = map mk_assoc_elem tidied_on_switches in -- (avoid some unboxing, bounds checking, and other horrible things:) - case sw_tbl of { ARRAY bounds_who_needs_'em stuff -> + case sw_tbl of { Array bounds_who_needs_'em stuff -> \ switch -> case (indexArray# stuff (tagOf_SimplSwitch switch)) of - LIFT v -> v +#if __GLASGOW_HASKELL__ < 400 + Lift v -> v +#else + (# _, v #) -> v +#endif } where - mk_assoc_elem k@(MaxSimplifierIterations lvl) = IBOX(tagOf_SimplSwitch k) SET_TO SwInt lvl + mk_assoc_elem k@(MaxSimplifierIterations lvl) = (IBOX(tagOf_SimplSwitch k), SwInt lvl) - mk_assoc_elem k = IBOX(tagOf_SimplSwitch k) SET_TO SwBool True -- I'm here, Mom! + mk_assoc_elem k = (IBOX(tagOf_SimplSwitch k), SwBool True) -- I'm here, Mom! -- cannot have duplicates if we are going to use the array thing rm_dups switches_so_far switch @@ -626,15 +591,6 @@ switchIsOn lookup_fn switch SwBool False -> False _ -> True -stringSwitchSet :: (switch -> SwitchResult) - -> (FAST_STRING -> switch) - -> Maybe FAST_STRING - -stringSwitchSet lookup_fn switch - = case (lookup_fn (switch (panic "stringSwitchSet"))) of - SwString str -> Just str - _ -> Nothing - intSwitchSet :: (switch -> SwitchResult) -> (Int -> switch) -> Maybe Int @@ -644,3 +600,17 @@ intSwitchSet lookup_fn switch SwInt int -> Just int _ -> Nothing \end{code} + +\begin{code} +startsWith, endsWith :: String -> String -> Maybe String + +startsWith [] str = Just str +startsWith (c:cs) (s:ss) + = if c /= s then Nothing else startsWith cs ss +startsWith _ [] = Nothing + +endsWith cs ss + = case (startsWith (reverse cs) (reverse ss)) of + Nothing -> Nothing + Just rs -> Just (reverse rs) +\end{code}