X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fmain%2FBreakArray.hs;h=4d2c07bba93fff188d8e0c312ab0ae9ba0030358;hp=dbae88a1129f6865e46cd8eac409e14a99a7dd7d;hb=edc0bafd3fcd01b85a2e8894e5dfe149eb0e0857;hpb=71f74505bed49cf595bc9df3d1ba050448793c92

diff --git a/compiler/main/BreakArray.hs b/compiler/main/BreakArray.hs
index dbae88a..4d2c07b 100644
--- a/compiler/main/BreakArray.hs
+++ b/compiler/main/BreakArray.hs
@@ -3,31 +3,37 @@
 -- Break Arrays in the IO monad
 -- Entries in the array are Word sized 
 --
+-- Conceptually, a zero-indexed IOArray of Bools, initially False.
+-- They're represented as Words with 0==False, 1==True.
+-- They're used to determine whether GHCI breakpoints are on or off.
+--
 -- (c) The University of Glasgow 2007
 --
 -----------------------------------------------------------------------------
 
 module BreakArray
-  ( BreakArray (BA)
-        -- constructor is exported only for ByteCodeGen
+  ( BreakArray
+#ifdef GHCI
+      (BA)  -- constructor is exported only for ByteCodeGen
+#endif
   , newBreakArray
+#ifdef GHCI
   , getBreak 
   , setBreakOn 
   , setBreakOff
   , showBreakArray
+#endif
   ) where
-
+#ifdef GHCI
 import GHC.Exts
-import GHC.IOBase
-import GHC.Prim
-import GHC.Word
+import GHC.IO ( IO(..) )
 import Constants
 
 data BreakArray = BA (MutableByteArray# RealWorld)
 
 breakOff, breakOn :: Word
-breakOn  = fromIntegral 1
-breakOff = fromIntegral 0
+breakOn  = 1
+breakOff = 0
 
 -- XXX crude
 showBreakArray :: BreakArray -> IO ()
@@ -99,3 +105,14 @@ readBA# array i = IO $ \s ->
 
 readBreakArray :: BreakArray -> Int -> IO Word 
 readBreakArray (BA array) (I# i) = readBA# array i
+
+#else /* GHCI */
+--stub implementation to make main/, etc., code happier.
+--IOArray and IOUArray are increasingly non-portable,
+--still don't have quite the same interface, and (for GHCI)
+--presumably have a different representation.
+data BreakArray = Unspecified
+newBreakArray :: Int -> IO BreakArray
+newBreakArray _ = return Unspecified
+#endif /* GHCI */
+