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1900 :: struggling template

• yuutayamada (orginal) [2015-12-27T17:42:55+01:00] view original

  Hi, I'm struggling to convert following code by using template:

  import emacs_module as emacs
  proc Fmod_test_return_t(env: ptr emacs_env, nargs: ptrdiff_t,
                          args: ptr emacs_value, data: pointer): emacs_value
       {.exportc.} =
    env.intern(env, "t".cstring)
  Run

  I wrote below template:

  template addFunc*(name: expr, body: stmt):stmt {.immediate.} =
    proc name*(env: ptr emacs_env, nargs: ptrdiff_t,
               args: ptr emacs_value, data: pointer): emacs_value
       {.exportc.} =
      body
  
  emacs.addFunc(Fmod_test_return_t):
    env.intern(env, "t".cstring)
  Run

  But I got undeclared identifier: env error...

  Am I missing something? (I could compile if I write without that template and complete code is here https://github.com/yuutayamada/nim-emacs-module/blob/master/emacs_module.nim)

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• yuutayamada (orginal) [2015-12-27T21:52:20+01:00] view original

  Sorry, somehow I could solve myself.

  After I just added dirty pragma, the error was disappeared (and could call nim's function from Emacs)

  template addFunc*(function_name: expr, body: stmt): stmt {.immediate, dirty.} =
    proc function_name*(env: ptr emacs_env, nargs: ptrdiff_t,
                        args: ptr emacs_value, data: pointer): emacs_value
       {.exportc.} =
      body
  Run

  though I don't know what I'm doing

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