Pretty AST

Pretty-print an abstract syntax tree (AST). Primarily written with GF ASTs in mind, but probably useful for other things.

Before:

PhrUtt otherwise_PConj (UttImpSg PNeg (ImpVP (ComplSlash (Slash2V3 talk_V3 something_NP) (DetNP every_Det)))) (VocNP something_NP)

After:

PhrUtt
  otherwise_PConj
  UttImpSg
    PNeg
    ImpVP
      ComplSlash
        Slash2V3
          talk_V3
          something_NP
        DetNP
          every_Det
  VocNP
    something_NP

Usage

• Choose Pretty print AST from a context menu or the command pretty-ast:pretty-print from the command palette.
• Reverse it with Collapse pretty-printed AST or pretty-ast:collapse
• Toggle back and forth with pretty-ast:toggle (single line selection will be pretty printed, multilines will be collapsed).