[Mono-list] gen-treedump.cs not in use?

[linkspeed]

Hi, All:
  There is a file called "gen-treedump.cs" in mcs package.
  From the code, it is a dumper for the parser tree in MCS
  compiler. 

  But this file is not used in any test program or the compiler.
  I tried to change the driver.cs to create a dumper for every
  file it compiles. Then I realised that the dumper does not
  use the right attributes or packages in current implementation.

  for example, it uses Unary.Operator.PreIncrement which is not
  in the Unary class but UnaryMutator. 

  Is this file not in use?

  I am studying the parser tree in this compiler. 

Thanks
linkspeed
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