[GHC] #15252: syn_arg_wraps and syn_res_wrap are only populated after typechecking

[GHC]

#15252: syn_arg_wraps and syn_res_wrap are only populated after typechecking
-------------------------------------+-------------------------------------
           Reporter:  mpickering     |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.3
           Keywords:  newcomer       |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 The definition for `SyntaxExpr` has two fields which are only populated
 after type checking. `SyntaxExpr` should have an extension point which
 contains these two fields.

 {{{
  data SyntaxExpr p = SyntaxExpr { syn_expr      :: HsExpr p
                                  , syn_arg_wraps :: [HsWrapper]
                                  , syn_res_wrap  :: HsWrapper }
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15252>
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