[vJASS] Detecting object type (JAVA relevant issue)

[Starquizer]

Is it possible to detect an object in JASS, meaning that I could know whether the object saved on a variable is a unit, destructable, item, etc ?

 

[Nestharus]

You can detect what's inside a variable by writing it to a hashtable and reading it back out.

Read out all handle types from the hashtable until one of them isn't null

 

[Troll-Brain]

Use SaveAgentHandle and if LoadWhateverType != null then the agent variable is this type.
Of course there are other ways.

Not sure how it could be useful though, just for the fun probably.

EDIT : Well, Nestharus beat me, i've forgotten these Have... functions.

 

[Nestharus]

Using the have natives will only be needed for quick checking null values

HaveSavedHandle?

 

[Troll-Brain]

What's the point of using HaveSavedHandle here, except checking if it's a valid handle (no null, nor ghost one).

Oh and btw i vaguely remember that HaveSaved... functions were slower than the same Load... != null.
(just maybe because jass is interpreted and HaveSaved... is longer than Load... != null)
But my stress test could be wrong.

I'm just saying that for the sake of accuracy, i don't care.

 

[Starquizer]

Not sure how it could be useful though, just for the fun probably.

I was hoping to make an Array List (like in JAVA) feature that can accept data types.

 

[Nestharus]

I was hoping to make an Array List (like in JAVA) feature that can accept data types.

That's best done at the preprocessor level .

You can do it like void* in SC2 though with function references =). I have totally generic collections in SC2 ; P.

 

[Troll-Brain]

What is SC2

Back on topic have you a concrete sample of usage with a such list, i mean maybe there is a better way to do it, instead of this "typecasting".
Remember that jass is limited.

 

[Starquizer]

Remember that jass is limited.

Yes and also a pain in the jASS.