[ve-dev] Bug in VE decoder helper?

["Mark S. Millard" <mmillard@xxxxxxxxxx>]

I have a decoder helper for a “label” widget I’m writing. I have a “look” property that is being changed in the Property view.

 

The decoder helper is defined as follows:

 

public class LabelDecoderHelper extends SimpleAttributeDecoderHelper

{

    private static final String LOOK_TRY_EXCEPTION = "try {\n";

    private static final String LOOK_CATCH_EXCEPTION = "} catch (HInvalidLookException ex) {}";

 

    public LabelDecoderHelper(BeanPart bean, Statement exp, IJavaFeatureMapper fm, IExpressionDecoder owner)

    {

        super(bean, exp, fm, owner);

    }

 

    /* (non-Javadoc)

     * @see org.eclipse.ve.internal.java.codegen.java.IExpressionDecoderHelper#generate(java.lang.Object[])

    */

    public String generate(Object[] noArgs) throws CodeGenException

    {                  

        String result = super.generate(noArgs);

       

        // Add a try/catch block for the HInvalidLookException.

        int idx = result.lastIndexOf(';') + 1;

        return LOOK_TRY_EXCEPTION + result.substring(0, idx) + LOOK_CATCH_EXCEPTION + result.substring(idx, result.length());

    }

}

 

I would expect the final generated code to have the try/catch block surrounding the code generated by VE:

 

try {

label.setLook(new FillDecorator());

} catch (HInvalidLookException ex) {}

 

Instead, the catch code is truncated to:

 

try {

label.setLook(new FillDecorator());

 

I have tried different variations of the LOOK_CATCH_EXCEPTION string and the final code is always truncated, sometimes generating part of the LOOK_CATCH_EXCEPTION string (depending on what the string is).

 

Any help here is appreciated.

 

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Mark S. Millard, Software Architect