Function callbacks

[Magtheridon96]

What is the best and most efficient way to do function callbacks?
This is my situation:
I'm using a timer with a 0 timeout to callback a function, but unfortunately,
I can't use boolexprs (which I'm using instead of code due to the lack of code arrays).

 

[LeP]

What is the best and most efficient way to do function callbacks?
This is my situation:
I'm using a timer with a 0 timeout to callback a function, but unfortunately,
I can't use boolexprs (which I'm using instead of code due to the lack of code arrays).

Not that you gave much information, but use function interfaces.

 

[Dr Super Good]

You mean you can not create a code array? I never new this as I created a code variable fine the other day.

 

[Geries]

You mean you can not create a code array? I never new this as I created a code variable fine the other day.

Older jass syntax checkers will not recognise that, but warcraft will not open the map.

 

[Dr Super Good]

Thats rather lame of JASS...

I guess you have to use an intermitent function, which then runs the desired function but acts as the callback for the timer.

 

[Magtheridon96]

That'll probably work.
I'll have to use a hashtable though.
Thanks for the help

 

[Dr Super Good]

As long as the timeout is not very small, it should not make much of a difference.

 

[Magtheridon96]

Actually, I just decided to create an Execute Function library
It uses dynamic triggers (That way, it could support boolexpr and code varaibles )

edit
Check this out:

library ExecuteFunction
    function ExecuteBoolexpr takes boolexpr b returns nothing
        local trigger t = CreateTrigger()
        call TriggerAddCondition(t,b)
        call TriggerEvaluate(t)
        call DestroyTrigger(t)
        set t = null
    endfunction
    
    function ExecuteCode takes code c returns nothing
        local trigger t = CreateTrigger()
        call TriggerAddCondition(t,Condition(c))
        call TriggerEvaluate(t)
        call DestroyTrigger(t)
        set t = null
    endfunction
endlibrary

 

[Deaod]

Okay. Since you apparently didnt read what lep posted, i guess ill have to list all the reasons you shouldnt be using that snippet.

• What you call executing should actually be called evaluating
• Youre dynamically creating and destroying triggers, the overhead of which makes this solution terribly slow
• Youre entirely missing the ability to pass arguments to the invoked function and return what the invoked function returned (only works when evaluating code)

 

[Dr Super Good]

JASS can not dynamicly execute functions passing arguments. VJASS just emulates it in a simar method of evaluation.

 

[Troll-Brain]

Sure, but at least you don't have to handle the trigger creation yourself, and it will be done only one time during map init.
Also you can use functions arguments and choice to returns something (in the background it will use global variables).

vJass is more friendly to use.

 

[Magtheridon96]

I know that snippet is slow, but it's an alternative for ExecuteFunc .. especially when you can't get the name of the function. (Or so I've heard)
It's alright for now.

Just one question:
Assume I have a boolexpr variable called func
If I input func.name, would it return the name of the boolexpr? Or would it just return something like SCOPE_PREFIX+func?

 

[Deaod]

You dont seem to get it... Dont use the snippet you wrote.
Use SomeFunction.evaluate(<Params>) or SomeFunction.exeucte(<Params>)

Or declare a function interface and an array of it and then execute whichever index of this array that you like.

 

[Magtheridon96]

I'm not going to use the snippet.
If you read the last few sentences in the section above function interfaces in the Manual, you'd know what I'm talking about when I say:

Assume I have a boolexpr variable called func
If I input func.name, would it return the name of the boolexpr? Or would it just return something like SCOPE_PREFIX+func?

Anyway, close this thread.
Problem Solved.

 

[Deaod]

Assume I have a boolexpr variable called func
If I input func.name, would it return the name of the boolexpr?

func.name wouldnt work, ie. youd get a syntax error thrown at you.

 

[Magtheridon96]

Thanks for the help Deaod
My problem is solved and my resource has been submitted ^^