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8460 :: Help needed - issue wrapping header with c2nim

• mantielero (orginal) [2021-09-26T13:37:00+02:00] view original

  I am struggling with this header: Standard_Handle.hxx.

  I hit several issues with it. I reported a couple of the issues: parsing issue and the most problematic one for me: Token pasting operator `##`.

  The closest I got was by using the modded version of the header Standard_Handle.hxx. I have tried with this standard_handle.c2nim:

  
  #ifdef C2NIM
  #skipcomments
  #skipinclude
  #pp DEFINE_STANDARD_HANDLE
  #pp Handle
  #pp DEFINE_STANDARD_HANDLECLASS
  #pp DEFINE_STANDARD_RTTIEXT
  #pp DEFINE_STANDARD_RTTI_INLINE
  #pp DEFINE_NCOLLECTION_ALLOC
  #endif
  Run

  but when I run:

  
  $ c2nim --cpp --header --strict --skipcomments --out:borrame.nim standard_handle.c2nim Standard_Handle.hxx
  Standard_Handle.hxx(345, 52) Error: token expected: ( but got: [identifier]
  Run

  So I am struggling at the very end:

  ++
  #define DEFINE_STANDARD_HANDLECLASS(C1,C2,BC) class C1; typedef Handle(C1) Handle_##C1;
  Run

  What can I do to make it work?

---

• mantielero (orginal) [2021-09-26T20:41:44+02:00] view original

  I wonder if the last line should be converted into something like:

  template DEFINE_STANDARD_HANDLECLASS*(C1, C2, BC: untyped): untyped =
    discard "forward decl of C1"
    type
      `Handle C1` = Handle[C1]
  Run

  and then I should replace Handle_ with Handle everywhere.

  What do you think?

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