[GHC] #11140: add command-line option to GHC to dump raw parse trees of Haskell programs

[GHC]

#11140: add command-line option to GHC to dump raw parse trees of Haskell programs
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        Reporter:  bollu             |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  low               |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:  newcomer
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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Changes (by thomie):

 * type:  bug => feature request


Comment:

 See the description of #11024 for example output.


 irc confo:
 * rwbarton > I think this is going to be kind of a messy continuum between
 representing all the data in the AST and producing output that's at all
 comprehensible to a human
 * mpickering > rwbarton: we have some code in ghc-exactprint which dumps
 the while AST and it has been very useful for us fwiw
 * mpickering > it's useful when you want to check what exact SrcSpan
 something has for example

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11140#comment:1>
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