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1141 :: Basic AST

• GravityWell (orginal) [2015-04-18T15:15:02+02:00] view original

  I'd like to see the AST for a code file or procedure. I've seen references to renderTree, but I'm struggling to get a simple working example.

  The following works for Python. How can I do something similar with Nim?

  import ast
  print ast.dump(ast.parse("for i in range(10): print i"),True,True)
  Run

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• def (orginal) [2015-04-18T15:28:26+02:00] view original

  import macros
  
  dumpTree:
    for i in 0..9:
      echo i
  Run

  This prints:

  
  StmtList
    ForStmt
      Ident !"i"
      Infix
        Ident !".."
        IntLit 0
        IntLit 9
      StmtList
        Command
          Ident !"echo"
          Ident !"i"
  Run

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• jboy (orginal) [2015-04-18T15:32:29+02:00] view original

  Hi @GravityWell,

  Have you seen treeRepr and dumpTree in the macros module?

  dumpTree dumps-to-stdout the AST of block statements inside it. treeRepr converts the AST of its NimNode argument into a string, which you can then output using hint.

  Edit: Heh, and I just saw @def's reply before mine.

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• GravityWell (orginal) [2015-04-18T16:42:43+02:00] view original

  Thanks def and jboy. This gets me started.

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