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Index › Programming Questions & Help › Syntax Questions › Defining an enum.  What's the trick
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Defining an enum.  What's the trick? (Read 665 times)
cloister
Defining an enum.  What's the trick?
Feb 2nd, 2009, 8:53pm  
I'm trying to create an enumeration to define node types for a tree structure I'm creating.  Only, processing doesn't like it.  If I define it after draw(), I get this:

processing.app.debug.RunnerException: unexpected token: Node

and the code editor hilights the line:

public enum NodeType {

If I move the definition to the front of the file, it gives me a different message:

processing.app.debug.RunnerException: expecting "class", found 'enum'

So yes, I'm a newbie, but I've read all the docs (which, by the way, don't mention enum) as well as the java language reference, so as far as I can tell I'm defining the enum correctly.  What's the trick?
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koogy
Re: Defining an enum.  What's the trick?
Reply #1 - Feb 2nd, 2009, 9:21pm  
whilst java supports enums since 1.5 and processing uses java 1.5 (or later) unfortunately the parser that the processing development environment uses doesn't understand them.
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PhiLho 
Re: Defining an enum.  What's the trick?
Reply #2 - Feb 3rd, 2009, 12:47am  
As said by koogs, Processing uses Java 1.6 but has a pre-processor whose grammar is still at 1.4, so new constructs are not usable in .pde files.
Now, as somebody pointed out smartly, you can put such special definitions in a .java file in the sketch.
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WWW  
cloister
Re: Defining an enum.  What's the trick?
Reply #3 - Feb 3rd, 2009, 1:25am  
Ok.  Well, I guess I feel better knowing that it wasn't me screwing up something really dumb.

I'll probably just define some constants instead.  Simpler.

Thanks for the info!
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