Mr Preskovik

 method has been properly executed? I’ve tried with a 

 statement. But it does not seem to work that way.

 Is there a way with the Javascript LiveApi to check if aset() or a call() method has been properly executed?  I’ve tried with a try/catch and with an if() statement. But it does not seem to work that way.

 Is there a way with the Javascript LiveApi to check if aset() or a call() method has been properly executed?  I’ve tried with a try/catch a

javascript-liveapi-check-set«»-or-call«»-execution

What do you mean by 'properly executed'? If you try to set a parameter or call a method, if its not a parameter/method, or the syntax is wrong, I believe you will get a warning in the max Editor. Right?

Indeed Evan, I receive messages in the Max console. So, it’s okay for the debugging phase. But these messages do not interrupt the code execution of the following lines. And for the finale device, I would like to provide 

 messages to end users if the device is not able to behave the way it is supposed to.

I’ve found no way yet to evaluate the success or failure of the LiveAPI methods. I’ve tested the code forms below.

If (MyLiveApi.set(paramName, value)) { …} else { …}

Try { MyLiveApi.call(functionName, value) } catch(e) { …}

In both forms, the lines execute as if everything were fine. I wonder if there would be another way to evaluate the success of these method execution?

Indeed Evan, I receive messages in the Max console. So, it’s okay for the debugging phase. But these messages do not interrupt the code execution of the following lines. And for the finale device, I would like to provide ad hoc messages to end users if the device is not able to behave the way it is supposed to.

I’ve found no way yet to evaluate the success or failure of the LiveAPI methods. I’ve tested the code forms below. 

If (MyLiveApi.set(paramName, value)) { …} else { …}
or
Try { MyLiveApi.call(functionName, value) } catch(e) { …}

In both forms, the lines execute as if everything were fine. I wonder if there would be another way to evaluate the success of these method execution? 

I don't know if there's a simple or quick way to do this actually, but I could be totally wrong here.

You might want to approach it from the front end, rather than the back. Not if it has been executed, but if it can be executed. It'll be a bit more work, as you'll have to make functions that handle different situations (device parameters, object functions, etc.).

Here's a bit of code I threw together to check if an object has a method. Input an object id, and a method name. The outlet will tell you if its valid, or not.

//input an id, and a method name.
function has_method(id,method){
    var object = new LiveAPI("id " + id);
    info = object.info;
    valid_methods = [];
    methods = []
    slices = [];
    for(i = 0; i < info.length ; i ++){
        if (info[i] == 'f'){
            if(info[i + 1] == "u" && info[i + 2] == "n" && info[i + 3] == "c"){
                methods = info.slice(i);
                break;
            }
        }
    }

    
    for (i = 0; i < methods.length; i ++){  
        if(methods[i] == "f" && methods[i + 1] == "u" && methods[i + 2] == "n"){
            slices.push(i);
        }
    }
    
    for (i = 0; i < slices.length -1; i ++){
        index = slices[i];
        next_index = slices[i + 1];
        valid_methods.push(methods.slice(index + 9, next_index -1))
    }

    for(m = 0; m < valid_methods.length; m ++){
        if (String(valid_methods[m]) == String(method)){
            outlet(0, "valid")
            break;
        }else{
            outlet(0, "not_valid");
        }
    }
    
}

I don't know if there's a simple or quick way to do this actually, but I could be totally wrong here. 

You might want to approach it from the front end, rather than the back. Not if it has been executed, but if it can be executed. It'll be a bit more work, as you'll have to make functions that handle different situations (device parameters, object functions, etc.). 

Here's a bit of code I threw together to check if an object has a method. Input an object id, and a method name. The outlet will tell you if its valid, or not. 

basecomp.js

Thank you very much for your help and support Evan. In some ways, your code example allows to validate the object type connected through the API by confirming the availability of a certain method. In my case, I’m quite confident about the object type (it would have failed before during the API initialisation, because of an inappropriate path). But I face problem of execution of certain methods.

Actually, I’m trying to move the loop markers of a clip inside the Arrangement view. And I’ve realized that problems can happen when you set the loop marker further and that another clip is in the way.

And I was wondering if there would be a way to “notify” my Javascript subpatch about this. But that seems complicated, apparently.

(I’ve attached the js file to my post if ever you're curious and want to take a peek.)

Thank you very much for your help and support Evan. In some ways, your code example allows to validate the object type connected through the API by confirming the availability of a certain method. In my case, I’m quite confident about the object type (it would have failed before during the API initialisation, because of an inappropriate path).  But I face problem of execution of certain methods.

In that case, first, the Live Api does not execute the myClip.set('loop_end', new_end); statement, but without raising any error ! 

And second, if I move later theloop_start marker to a higher value than the unchanged loop_end, Live will raise an error in the Max console (of course!), but my code will continue to execute without being warned about it.

(I’ve attached the js file to my post if ever you're curious and want to take a peek.)  

Javascript LiveApi - check set() or call() execution