eliminate reliance on -XRebindableSyntax

[ghc-hetmet.git] / compiler / main / DynFlags.hs

diff --git a/compiler/main/DynFlags.hs b/compiler/main/DynFlags.hs
index 9147a92..22df6a0 100644 (file)
--- a/compiler/main/DynFlags.hs
+++ b/compiler/main/DynFlags.hs
@@ -32,7 +32,7 @@ module DynFlags (
         Option(..), showOpt,
         DynLibLoader(..),
         fFlags, fLangFlags, xFlags,
-        DPHBackend(..), dphPackage,
+        DPHBackend(..), dphPackageMaybe,
         wayNames,
 
         -- ** Manipulating DynFlags
@@ -101,6 +101,7 @@ import Data.Char
 import Data.List
 import Data.Map (Map)
 import qualified Data.Map as Map
+import Data.Maybe
 import System.FilePath
 import System.IO        ( stderr, hPutChar )
 
@@ -153,8 +154,10 @@ data DynFlag
    | Opt_D_dump_rn_stats
    | Opt_D_dump_opt_cmm
    | Opt_D_dump_simpl_stats
+   | Opt_D_dump_cs_trace       -- Constraint solver in type checker
    | Opt_D_dump_tc_trace
    | Opt_D_dump_if_trace
+   | Opt_D_dump_vt_trace
    | Opt_D_dump_splices
    | Opt_D_dump_BCOs
    | Opt_D_dump_vect
@@ -176,6 +179,10 @@ data DynFlag
    | Opt_DoCmmLinting
    | Opt_DoAsmLinting
 
+   | Opt_F_coqpass                      -- run the core-to-core   coqPass (does whatever CoqPass.hs says)
+   | Opt_D_coqpass                      -- run the core-to-string coqPass and dumps the result
+   | Opt_D_dump_coqpass                 -- dumps the output of the core-to-core coqPass
+
    | Opt_WarnIsError                    -- -Werror; makes warnings fatal
    | Opt_WarnDuplicateExports
    | Opt_WarnHiShadows
@@ -308,6 +315,7 @@ data ExtensionFlag
    | Opt_GHCForeignImportPrim
    | Opt_ParallelArrays                 -- Syntactic support for parallel arrays
    | Opt_Arrows                         -- Arrow-notation syntax
+   | Opt_ModalTypes                     -- Heterogeneous Metaprogramming (modal types, brackets, escape, CSP)
    | Opt_TemplateHaskell
    | Opt_QuasiQuotes
    | Opt_ImplicitParams
@@ -1259,7 +1267,9 @@ dynamic_flags = [
   , Flag "ddump-worker-wrapper"    (setDumpFlag Opt_D_dump_worker_wrapper)
   , Flag "ddump-rn-trace"          (setDumpFlag Opt_D_dump_rn_trace)
   , Flag "ddump-if-trace"          (setDumpFlag Opt_D_dump_if_trace)
+  , Flag "ddump-cs-trace"          (setDumpFlag Opt_D_dump_cs_trace)
   , Flag "ddump-tc-trace"          (setDumpFlag Opt_D_dump_tc_trace)
+  , Flag "ddump-vt-trace"          (setDumpFlag Opt_D_dump_vt_trace)
   , Flag "ddump-splices"           (setDumpFlag Opt_D_dump_splices)
   , Flag "ddump-rn-stats"          (setDumpFlag Opt_D_dump_rn_stats)
   , Flag "ddump-opt-cmm"           (setDumpFlag Opt_D_dump_opt_cmm)
@@ -1286,6 +1296,11 @@ dynamic_flags = [
                                               setVerbosity (Just 2)))
   , Flag "dfaststring-stats"       (NoArg (setDynFlag Opt_D_faststring_stats))
 
+        ------ Coq-in-GHC ---------------------------
+  , Flag "dcoqpass"                (NoArg (setDynFlag Opt_D_coqpass))
+  , Flag "ddump-coqpass"           (NoArg (setDynFlag Opt_D_dump_coqpass))
+  , Flag "fcoqpass"                (NoArg (setDynFlag Opt_F_coqpass))
+
         ------ Machine dependant (-m<blah>) stuff ---------------------------
 
   , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
@@ -1586,6 +1601,7 @@ xFlags = [
     deprecatedForExtension "DoRec"),
   ( "DoRec",                            Opt_DoRec, nop ),
   ( "Arrows",                           Opt_Arrows, nop ),
+  ( "ModalTypes",                      Opt_ModalTypes, nop ),
   ( "ParallelArrays",                   Opt_ParallelArrays, nop ),
   ( "TemplateHaskell",                  Opt_TemplateHaskell, checkTemplateHaskellOk ),
   ( "QuasiQuotes",                      Opt_QuasiQuotes, nop ),
@@ -1675,6 +1691,11 @@ impliedFlags
     , (Opt_PolymorphicComponents,     turnOn, Opt_ExplicitForAll)
     , (Opt_FlexibleInstances,         turnOn, Opt_TypeSynonymInstances)
 
+    , (Opt_ModalTypes,                 turnOn,  Opt_RankNTypes)
+    , (Opt_ModalTypes,                 turnOn,  Opt_ExplicitForAll)
+    --, (Opt_ModalTypes,                 turnOn,  Opt_RebindableSyntax)
+    , (Opt_ModalTypes,                 turnOff, Opt_MonomorphismRestriction)
+
     , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude)      -- NB: turn off!
 
     , (Opt_GADTs,            turnOn, Opt_GADTSyntax)
@@ -2012,18 +2033,15 @@ data DPHBackend = DPHPar    -- "dph-par"
 setDPHBackend :: DPHBackend -> DynP ()
 setDPHBackend backend = upd $ \dflags -> dflags { dphBackend = backend }
 
--- Query the DPH backend package to be used by the vectoriser.
+-- Query the DPH backend package to be used by the vectoriser and desugaring of DPH syntax.
 --
-dphPackage :: DynFlags -> PackageId
-dphPackage dflags 
+dphPackageMaybe :: DynFlags -> Maybe PackageId
+dphPackageMaybe dflags 
   = case dphBackend dflags of
-      DPHPar  -> dphParPackageId
-      DPHSeq  -> dphSeqPackageId
-      DPHThis -> thisPackage dflags
-      DPHNone -> ghcError (CmdLineError dphBackendError)
-
-dphBackendError :: String
-dphBackendError = "To use -fvectorise select a DPH backend with -fdph-par or -fdph-seq"
+      DPHPar  -> Just dphParPackageId
+      DPHSeq  -> Just dphSeqPackageId
+      DPHThis -> Just (thisPackage dflags)
+      DPHNone -> Nothing
 
 setMainIs :: String -> DynP ()
 setMainIs arg
@@ -2279,7 +2297,7 @@ picCCOpts _dflags
 -- Splitting
 
 can_split :: Bool
-can_split = cSplitObjs == "YES"
+can_split = cSupportsSplitObjs == "YES"
 
 -- -----------------------------------------------------------------------------
 -- Compiler Info
@@ -2296,7 +2314,7 @@ compilerInfo = [("Project name",                String cProjectName),
                 ("Host platform",               String cHostPlatformString),
                 ("Target platform",             String cTargetPlatformString),
                 ("Have interpreter",            String cGhcWithInterpreter),
-                ("Object splitting",            String cSplitObjs),
+                ("Object splitting supported",  String cSupportsSplitObjs),
                 ("Have native code generator",  String cGhcWithNativeCodeGen),
                 ("Support SMP",                 String cGhcWithSMP),
                 ("Unregisterised",              String cGhcUnregisterised),