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4095 :: Generating pascal interface

• markprocess (orginal) [2018-08-01T07:26:54+02:00] view original

  Is there a way that I can use a macro to create:

  procedure p1 (a: integer); cdecl; external 'libx'; name 'p1';

  from a nim file named 'libx.nim' that contains:

  proc p1(a: int) =
      ...

  I want the pascal interface to be written to a separate file. The nim file is a library that is linked to a pascal program.

  Thanks, Mark

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• Stefan_Salewski (orginal) [2018-08-01T07:50:44+02:00] view original

  I think what you wants to do is plain text processing. For that you do not need Nim macros, you may use module strutils and related modules, maybe also pattern matching. Basically you parse the input nim file, and then write the pascal interface file with that data.

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• markprocess (orginal) [2018-08-01T08:40:44+02:00] view original

  I was hoping that a macro could generate the text by processing the ast of a proc signature and write the result to a file instead of being further processed by the nim compiler.

  Nim proc to pascal procedure might nearly be just some text juggling, but I'd also like to convert nim object types to pascal record types.

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• Araq (orginal) [2018-08-01T09:08:18+02:00] view original

  I have used Nim's macro system to generate Squeak source code but the easiest route might be to use the compiler as a library and adapt compiler/renderer.nim to produce Pascal code.

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• markprocess (orginal) [2018-08-01T09:45:36+02:00] view original

  Thanks. Is it reasonable to start with nimpretty, make a copy of renderer.nim in pascalinterfacerenderer.nim, import that instead and start modifying it?

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