[JSR308] Simple question regarding jsr308 compiler for localvariable annotation processing

[Chester Chen]

Ok, after reading the checker framework and browse the archive emails, 
I think I figure out how to do this. 


I should extends the TreeScaner instead of ElementScanner6. TreeScanner 
will allow me to visit Local Variables, and then I can get the annotation
from the AST Tree node (somehow, I still need to figure this part out). 


Chester




-----Original Message-----
From: jsr308-bounces at lists.csail.mit.edu
[mailto:jsr308-bounces at lists.csail.mit.edu]On Behalf Of Chester Chen
Sent: Tuesday, December 16, 2008 4:25 PM
To: jsr308 at lists.csail.mit.edu
Subject: [JSR308] Simple question regarding jsr308 compiler for
localvariable annotation processing


Hi, 
   
   I am interested in using JSR308 compiler to processing my local variable annotations. 
   
   for example, 

   public void myMethod() {
     String myValue = null;

     if (!testCondition(myTest))  {
         @ErrorMessage(messageFormat="this is annoation on local variable, value = {0} ";
         String errorCode = "EC_101";
         throw new MyException(errorCode, myValue);
     }
     else 
        doSomething();
   }


   It looks like JSR308 (later Java 7) will be able to do this. With JSR308 compiler, after the installation (replacing tools.jar will toos-jsr308.jar) in JDK 1.6.x; Would I be able to pick local variable annotation ?

   For example overwrite the ElementScanner6 class method

    /**
     * {@inheritDoc} This implementation scans the enclosed elements.
     *
     * @param e  the element to visit
     * @param p  a visitor-specified parameter
     * @return the result of scanning
     */
    public R visitVariable(VariableElement e, P p) {
	//print annotation here 
    }


Please advise. 

Thanks

Chester


   

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