Make irb work with the ripper shim #3849
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This is everything that `irb` uses. It works in their test-suite, but there are 20 failures when using the shim that I haven't looked into at all. `parse` is not used by `irb`. `scan` is, and it's basically `parse` but also including errors. `irb` doesn't seem to care about the errors, so I didn't implement that.
Earlopain
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In ruby#3849, I wondered why for the lex method I added some files as excludes for the first time. Turns out, the result contains different token types that lie about equality for `LexTest`. That seems useful only for testing, so I removed it. It's better to explicitly list the excludes and handle specially certain cases when asserting (like ignoring state for `on_heredoc_end`). Since `RipperLex` already contains full tests for the lex method, I removed the ones in `LexTest`. They make more sense in the ripper class to me. Also, some of the special token types were not necessary anymore, like `EndContentToken`. Probably was fixed at some point.
Earlopain
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`RipperTest` already does this (added in ruby#3849) Since it doesn't use the token classes, it also lists out all the excludes instead of just claiming some are passing.
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This is everything that
irbuses. It works in their test-suite, but there are 20 failures when using the shim that I haven't looked into at all.parseis not used byirb.scanis, and it's basicallyparsebut also including errors.irbdoesn't seem to care about the errors, so I didn't implement that.Ref #3838