[GHC] #11301: Using GHC's parser and rendering the results is unreasonably difficult

[GHC]

#11301: Using GHC's parser and rendering the results is unreasonably difficult
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        Reporter:  bitemyapp         |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  GHC API           |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"5aa29231ab7603537284eff5e4caff3a73dba6d2/ghc"
 5aa29231/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="5aa29231ab7603537284eff5e4caff3a73dba6d2"
 'DynFlag'-free version of 'mkParserFlags'

 Obtaining a `DynFlags` is difficult, making using the lexer/parser
 for pure parsing/lexing unreasonably difficult, even with
 `mkPStatePure`.
 This is despite the fact that we only really need

   * language extension flags
   * warning flags
   * a handful of boolean options

 The new `mkParserFlags'` function makes is easier to directly construct
 a `ParserFlags`. Furthermore, since `pExtsBitmap` is just a footgun,
 I've gone ahead and made `ParserFlags` an abstract type.

 Reviewers: bgamari, alanz, sjakobi

 Reviewed By: bgamari, sjakobi

 Subscribers: mpickering, sjakobi, rwbarton, carter

 GHC Trac Issues: #11301

 Differential Revision: https://phabricator.haskell.org/D5269
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11301#comment:5>
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