Initial checkin of HetMet / -XModalTypes modifications

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

diff --git a/compiler/main/DynFlags.hs b/compiler/main/DynFlags.hs
index 854b83a..a94a3f4 100644 (file)
--- a/compiler/main/DynFlags.hs
+++ b/compiler/main/DynFlags.hs
@@ -181,6 +181,7 @@ data DynFlag
    | Opt_WarnHiShadows
    | Opt_WarnImplicitPrelude
    | Opt_WarnIncompletePatterns
+   | Opt_WarnIncompleteUniPatterns
    | Opt_WarnIncompletePatternsRecUpd
    | Opt_WarnMissingFields
    | Opt_WarnMissingImportList
@@ -307,6 +308,7 @@ 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
@@ -805,7 +807,14 @@ languageExtensions (Just Haskell98)
     = [Opt_ImplicitPrelude,
        Opt_MonomorphismRestriction,
        Opt_NPlusKPatterns,
-       Opt_DatatypeContexts]
+       Opt_DatatypeContexts,
+       Opt_NondecreasingIndentation
+           -- strictly speaking non-standard, but we always had this
+           -- on implicitly before the option was added in 7.1, and
+           -- turning it off breaks code, so we're keeping it on for
+           -- backwards compatibility.  Cabal uses -XHaskell98 by
+           -- default unless you specify another language.
+      ]
 
 languageExtensions (Just Haskell2010)
     = [Opt_ImplicitPrelude,
@@ -1420,6 +1429,7 @@ fFlags = [
   ( "warn-hi-shadowing",                Opt_WarnHiShadows, nop ),
   ( "warn-implicit-prelude",            Opt_WarnImplicitPrelude, nop ),
   ( "warn-incomplete-patterns",         Opt_WarnIncompletePatterns, nop ),
+  ( "warn-incomplete-uni-patterns",     Opt_WarnIncompleteUniPatterns, nop ),
   ( "warn-incomplete-record-updates",   Opt_WarnIncompletePatternsRecUpd, nop ),
   ( "warn-missing-fields",              Opt_WarnMissingFields, nop ),
   ( "warn-missing-import-lists",        Opt_WarnMissingImportList, nop ),
@@ -1577,6 +1587,7 @@ 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 ),
@@ -1666,6 +1677,11 @@ 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)
@@ -1742,6 +1758,7 @@ standardWarnings
       ]
 
 minusWOpts :: [DynFlag]
+-- Things you get with -W
 minusWOpts
     = standardWarnings ++
       [ Opt_WarnUnusedBinds,
@@ -1753,6 +1770,7 @@ minusWOpts
       ]
 
 minusWallOpts :: [DynFlag]
+-- Things you get with -Wall
 minusWallOpts
     = minusWOpts ++
       [ Opt_WarnTypeDefaults,
@@ -1760,21 +1778,21 @@ minusWallOpts
         Opt_WarnMissingSigs,
         Opt_WarnHiShadows,
         Opt_WarnOrphans,
-        Opt_WarnUnusedDoBind,
-        Opt_WarnIdentities
+        Opt_WarnUnusedDoBind
       ]
 
--- minuswRemovesOpts should be every warning option
 minuswRemovesOpts :: [DynFlag]
+-- minuswRemovesOpts should be every warning option 
 minuswRemovesOpts
     = minusWallOpts ++
-      [Opt_WarnImplicitPrelude,
+      [Opt_WarnTabs,
        Opt_WarnIncompletePatternsRecUpd,
+       Opt_WarnIncompleteUniPatterns,
        Opt_WarnMonomorphism,
        Opt_WarnUnrecognisedPragmas,
        Opt_WarnAutoOrphans,
-       Opt_WarnTabs
-      ]
+       Opt_WarnImplicitPrelude
+     ]       
 
 enableGlasgowExts :: DynP ()
 enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
@@ -2296,6 +2314,7 @@ compilerInfo = [("Project name",                String cProjectName),
                 ("LibDir",                      FromDynFlags topDir),
                 ("Global Package DB",           FromDynFlags systemPackageConfig),
                 ("C compiler flags",            String (show cCcOpts)),
-                ("Linker flags",                String (show cLdOpts))
+                ("Gcc Linker flags",            String (show cGccLinkerOpts)),
+                ("Ld Linker flags",             String (show cLdLinkerOpts))
                ]