[project @ 2002-04-29 14:03:38 by simonmar]

FastString cleanup, stage 1.

The FastString type is no longer a mixture of hashed strings and
literal strings, it contains hashed strings only with O(1) comparison
(except for UnicodeStr, but that will also go away in due course).  To
create a literal instance of FastString, use FSLIT("..").

By far the most common use of the old literal version of FastString
was in the pattern

	  ptext SLIT("...")

this combination still works, although it doesn't go via FastString
any more.  The next stage will be to remove the need to use this
special combination at all, using a RULE.

To convert a FastString into an SDoc, now use 'ftext' instead of
'ptext'.

I've also removed all the FAST_STRING related macros from HsVersions.h
except for SLIT and FSLIT, just use the relevant functions from
FastString instead.

1 files changed, 3 insertions, 34 deletions

diff --git a/ghc/compiler/HsVersions.h b/ghc/compiler/HsVersions.h
index 4900e5663a..40a58517b4 100644
--- a/ghc/compiler/HsVersions.h
+++ b/ghc/compiler/HsVersions.h
@@ -37,8 +37,6 @@ name = Util.global (value) :: IORef (ty); \
 #define UASSERT2(e,msg)
 #endif
 
-#if __GLASGOW_HASKELL__ >= 23
-
 -- This #ifndef lets us switch off the "import FastString"
 -- when compiling FastString itself
 #ifndef COMPILING_FAST_STRING
@@ -46,36 +44,7 @@ name = Util.global (value) :: IORef (ty); \
 import qualified FastString 
 #endif
 
-# define USE_FAST_STRINGS 1
-# define FAST_STRING	FastString.FastString
-# define SLIT(x)	(FastString.mkFastCharString# (x#))
-# define FSLIT(x)	(FastString.mkFastString# (x#))
-# define _NULL_		FastString.nullFastString
-# define _NIL_		(FastString.mkFastString "")
-# define _CONS_		FastString.consFS
-# define _HEAD_		FastString.headFS
-# define _HEAD_INT_	FastString.headIntFS
-# define _TAIL_		FastString.tailFS
-# define _LENGTH_	FastString.lengthFS
-# define _PK_		FastString.mkFastString
-# define _UNPK_		FastString.unpackFS
-# define _UNPK_INT_	FastString.unpackIntFS
-# define _APPEND_	`FastString.appendFS`
-#else
-# error I think that FastString is now always used. If not, fix this.
-# define FAST_STRING String
-# define SLIT(x)      (x)
-# define _CMP_STRING_ cmpString
-# define _NULL_	      null
-# define _NIL_	      ""
-# define _CONS_	      (:)
-# define _HEAD_	      head
-# define _TAIL_	      tail
-# define _LENGTH_     length
-# define _PK_	      (\x->x)
-# define _UNPK_	      (\x->x)
-# define _SUBSTR_     substr{-from Utils-}
-# define _APPEND_     ++
-#endif
+#define SLIT(x)	 (FastString.mkLitString# (x#))
+#define FSLIT(x) (FastString.mkFastString# (x#))
 
-#endif
+#endif // HSVERSIONS_H