1. 04 Aug, 2008 1 commit
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  7. 17 Jan, 2008 1 commit
    • Isaac Dupree's avatar
      lots of portability changes (#1405) · 206b4dec
      Isaac Dupree authored
      re-recording to avoid new conflicts was too hard, so I just put it
      all in one big patch :-(  (besides, some of the changes depended on
      each other.)  Here are what the component patches were:
      
      Fri Dec 28 11:02:55 EST 2007  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * document BreakArray better
      
      Fri Dec 28 11:39:22 EST 2007  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * properly ifdef BreakArray for GHCI
      
      Fri Jan  4 13:50:41 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * change ifs on __GLASGOW_HASKELL__ to account for... (#1405)
        for it not being defined. I assume it being undefined implies
        a compiler with relatively modern libraries but without most
        unportable glasgow extensions.
      
      Fri Jan  4 14:21:21 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * MyEither-->EitherString to allow Haskell98 instance
      
      Fri Jan  4 16:13:29 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * re-portabilize Pretty, and corresponding changes
      
      Fri Jan  4 17:19:55 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * Augment FastTypes to be much more complete
      
      Fri Jan  4 20:14:19 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * use FastFunctions, cleanup FastString slightly
      
      Fri Jan  4 21:00:22 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * Massive de-"#", mostly Int# --> FastInt (#1405)
      
      Fri Jan  4 21:02:49 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * miscellaneous unnecessary-extension-removal
      
      Sat Jan  5 19:30:13 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * add FastFunctions
      206b4dec
  8. 10 Dec, 2007 1 commit
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  13. 04 Aug, 2007 1 commit
  14. 21 Jun, 2007 1 commit
    • David Himmelstrup's avatar
      Add several new record features · 2eb04ca0
      David Himmelstrup authored
      1. Record disambiguation (-fdisambiguate-record-fields)
      
      In record construction and pattern matching (although not
      in record updates) it is clear which field name is intended
      even if there are several in scope.  This extension uses
      the constructor to disambiguate.  Thus
      	C { x=3 }
      uses the 'x' field from constructor C (assuming there is one)
      even if there are many x's in scope.
      
      
      2. Record punning (-frecord-puns)
      
      In a record construction or pattern match or update you can 
      omit the "=" part, thus
      	C { x, y }
      This is just syntactic sugar for
      	C { x=x, y=y }
      
      
      3.  Dot-dot notation for records (-frecord-dot-dot)
      
      In record construction or pattern match (but not update) 
      you can use ".." to mean "all the remaining fields".  So
      
      	C { x=v, .. }
      
      means to fill in the remaining fields to give
      
      	C { x=v, y=y }
      
      (assuming C has fields x and y).  This might reasonably
      considered very dodgy stuff.  For pattern-matching it brings
      into scope a bunch of things that are not explictly mentioned;
      and in record construction it just picks whatver 'y' is in
      scope for the 'y' field.   Still, Lennart Augustsson really
      wants it, and it's a feature that is extremely easy to explain.
      
      
      Implementation
      ~~~~~~~~~~~~~~
      I thought of using the "parent" field in the GlobalRdrEnv, but
      that's really used for import/export and just isn't right for this.
      For example, for import/export a field is a subordinate of the *type
      constructor* whereas here we need to know what fields belong to a
      particular *data* constructor.
      
      The main thing is that we need to map a data constructor to its
      fields, and we need to do so in the renamer.   For imported modules
      it's easy: just look in the imported TypeEnv.  For the module being
      compiled, we make a new field tcg_field_env in the TcGblEnv.
      The important functions are
      	RnEnv.lookupRecordBndr
      	RnEnv.lookupConstructorFields
      
      There is still a significant infelicity in the way the renamer
      works on patterns, which I'll tackle next.
      
      
      I also did quite a bit of refactoring in the representation of
      record fields (mainly in HsPat).***END OF DESCRIPTION***
      
      Place the long patch description above the ***END OF DESCRIPTION*** marker.
      The first line of this file will be the patch name.
      
      
      This patch contains the following changes:
      
      M ./compiler/deSugar/Check.lhs -3 +5
      M ./compiler/deSugar/Coverage.lhs -6 +7
      M ./compiler/deSugar/DsExpr.lhs -6 +13
      M ./compiler/deSugar/DsMeta.hs -8 +8
      M ./compiler/deSugar/DsUtils.lhs -1 +1
      M ./compiler/deSugar/MatchCon.lhs -2 +2
      M ./compiler/hsSyn/Convert.lhs -3 +3
      M ./compiler/hsSyn/HsDecls.lhs -9 +25
      M ./compiler/hsSyn/HsExpr.lhs -13 +3
      M ./compiler/hsSyn/HsPat.lhs -25 +63
      M ./compiler/hsSyn/HsUtils.lhs -3 +3
      M ./compiler/main/DynFlags.hs +6
      M ./compiler/parser/Parser.y.pp -13 +17
      M ./compiler/parser/RdrHsSyn.lhs -16 +18
      M ./compiler/rename/RnBinds.lhs -2 +2
      M ./compiler/rename/RnEnv.lhs -22 +82
      M ./compiler/rename/RnExpr.lhs -34 +12
      M ./compiler/rename/RnHsSyn.lhs -3 +2
      M ./compiler/rename/RnSource.lhs -50 +78
      M ./compiler/rename/RnTypes.lhs -50 +84
      M ./compiler/typecheck/TcExpr.lhs -18 +18
      M ./compiler/typecheck/TcHsSyn.lhs -20 +21
      M ./compiler/typecheck/TcPat.lhs -8 +6
      M ./compiler/typecheck/TcRnMonad.lhs -6 +15
      M ./compiler/typecheck/TcRnTypes.lhs -2 +11
      M ./compiler/typecheck/TcTyClsDecls.lhs -3 +4
      M ./docs/users_guide/flags.xml +7
      M ./docs/users_guide/glasgow_exts.xml +42
      2eb04ca0
  15. 11 May, 2007 1 commit
    • chak@cse.unsw.edu.au.'s avatar
      Remove the distinction between data and newtype families · 6777144f
      chak@cse.unsw.edu.au. authored
      - This patch removes "newtype family" declarations.
      - "newtype instance" declarations can now be instances of data families
      - This also fixes bug #1331
      
        ** This patch changes the interface format.  All libraries and all of **
        ** Stage 2 & 3 need to be re-compiled from scratch.                   **
      6777144f
  16. 25 Apr, 2007 1 commit
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  19. 03 Jan, 2007 1 commit
  20. 02 Jan, 2007 1 commit
    • simonpj@microsoft.com's avatar
      Big tidy-up of deriving code · 84923cc7
      simonpj@microsoft.com authored
      This tidy-up, triggered by Trac #1068, re-factors the way that 'deriving' 
      happens.  It took me way longer than I had intended.  The main changes,
      by far are to TcDeriv; everyting else is a minor consequence.
      
      While I was at it, I changed the syntax for standalone deriving, so that
      it goes
      	derive instance Show (T a)
      
      (instead of "derive Show for T").  However, there's still an implicit
      context, generated by the deriving code, and I wonder if it shouldn't really
      be
      	derive instance (..) => Show (T a)
      but I have left it simple for now.
      
      I also added a function Type.substTyVars, and used it here and there, which
      led to some one-line changes otherwise unrelated (sorry).
      
      Loose ends:
        * 'deriving Typeable' for indexed data types is still not right
        * standalone deriving should be documented
      84923cc7
  21. 29 Nov, 2006 1 commit
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  27. 15 Sep, 2006 7 commits
  28. 09 Aug, 2006 1 commit
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  30. 25 Jun, 2006 1 commit
  31. 07 Apr, 2006 1 commit
    • Simon Marlow's avatar
      Reorganisation of the source tree · 0065d5ab
      Simon Marlow authored
      Most of the other users of the fptools build system have migrated to
      Cabal, and with the move to darcs we can now flatten the source tree
      without losing history, so here goes.
      
      The main change is that the ghc/ subdir is gone, and most of what it
      contained is now at the top level.  The build system now makes no
      pretense at being multi-project, it is just the GHC build system.
      
      No doubt this will break many things, and there will be a period of
      instability while we fix the dependencies.  A straightforward build
      should work, but I haven't yet fixed binary/source distributions.
      Changes to the Building Guide will follow, too.
      0065d5ab