1. 15 Jul, 2014 2 commits
    • Simon Peyton Jones's avatar
      Entirely re-jig the handling of default type-family instances (fixes Trac #9063) · 9b8ba629
      Simon Peyton Jones authored
      In looking at Trac #9063 I decided to re-design the default
      instances for associated type synonyms.  Previously it was all
      jolly complicated, to support generality that no one wanted, and
      was arguably undesirable.
      
      Specifically
      
      * The default instance for an associated type can have only
        type variables on the LHS.  (Not type patterns.)
      
      * There can be at most one default instances declaration for
        each associated type.
      
      To achieve this I had to do a surprisingly large amount of refactoring
      of HsSyn, specifically to parameterise HsDecls.TyFamEqn over the type
      of the LHS patterns.
      
      That change in HsDecls has a (trivial) knock-on effect in Haddock, so
      this commit does a submodule update too.
      
      The net result is good though.  The code is simpler; the language
      specification is simpler.  Happy days.
      
      Trac #9263 and #9264 are thereby fixed as well.
      9b8ba629
    • Simon Peyton Jones's avatar
      Define PrelNames.allNameStrings and use it in TcHsType · f692e8e7
      Simon Peyton Jones authored
      Refactoring only.
      f692e8e7
  2. 14 Jul, 2014 9 commits
  3. 13 Jul, 2014 4 commits
  4. 12 Jul, 2014 11 commits
  5. 11 Jul, 2014 5 commits
  6. 10 Jul, 2014 6 commits
  7. 09 Jul, 2014 3 commits