Re: [HOWTO] call a method on a PMC in PIR

2006-09-28 Thread Leopold Toetsch 
Am Donnerstag, 28. September 2006 12:47 schrieb Karl Forner:
 I suppose that again it is a trivial question, but I did not manage to find
 the answer by myself in the documentation.
 So I want for example to call diretly the elements method on a
 FixedBooleanArray

 I tried

pmc.elements()
pmc.elements()
pmc._elements()
pmc.__elements()

 But it did not work...

Exactly. Due to asymmetry of methods and vtables, the latter are not 
accessible as methods. You have to use the equivalent opcode:

  $I0 = elements ar_pmc

But you can code a PIR wrapper for it:

.namespace ['FixedBooleanArray']
.sub 'elements' :method
   $I0 = elements self
   .return ($I0)
.end

usable as:

  $I0 = ar_pmc.'elements'()

 In fact, what I really want to do, for debugging purposes, is to add a
 custom method in the FixedBooleanArray.pmc (e.g get_allocated_size() ) and
 be able to call it
 from PIR test code.

As you need PMC internals for this, you'd have to add it to the .pmc itself 
(temporarely):

  METHOD INTVAL get_allocated_size() {
 return PMC_int_val2(SELF);  /* or whatever */
  }

 Thanks
 Karl Forner

HTH,
leo

Re: [HOWTO] call a method on a PMC in PIR

2006-09-28 Thread Karl Forner 


  METHOD INTVAL get_allocated_size() {
 return PMC_int_val2(SELF);  /* or whatever */
  }



great, exactly what I needed
thanks
karl