andrea agostini

what is the best way of knowing if a given object is a MSP one?

the way I came up with is checking object_method(x, gensym("dsp")), but I was wondering if there is something better - something like class_is_ui(), or checking some flags or magic number or I don't know...

knowing-whether-an-object-is-msp

Checking for a dsp method is the recommended way to do this.

object_method() doesn't return 0 for a non-existing method (which would be the expected behaviour, according to the documentation).

It returns the same address for every non-existing method, instead - I'd guess it is a do-nothing method, but I did not test it.

is_msp = object_method(x, _sym_dsp) != object_method(x, gensym(" ");

... does it make sense? is there a better solution?

object_method() doesn't return 0 for a non-existing method (which would be the expected behaviour, according to the documentation). 

So what I'm currently doing is
is_msp = object_method(x, _sym_dsp) != object_method(x, gensym(" ");

Assuming you meant to write "object_getmethod" in place of "object_method", yes that is an acceptable solution. I would suggest you cache this once.

Alternately, you can use z_getfn and test for NULL.

Assuming you meant to write "object_getmethod" in place of "object_method", yes that is an acceptable solution. I would suggest you cache this once. 

Alternately, you can use z_getfn and test for NULL.


yes, it was object_getmethod() of course :)

yes, it was object_getmethod() of course :)
but I like better the z_getfn() solution
thank you!
aa


knowing whether an object is msp