Accessing the current JavaCompiler.CompilationTask within a Processor?
So,
I'd like to access the current CompilationTask to cast it to a com.sun.source.util.JavacTask in order to register a TaskListener.
This would all be done within the context of a javax.annotation.processing.Processor.
Is such a thing possible? (Basically, my Processor would like to compile a piece of code, but only after the CompilationTask has compiled a certain piece of code.--otherwise my Processor's compilation gets overwritten)
On another note, is there any way to get a list of all queued or running CompilationTasks? Or access to the outer JavaCompiler instance? ToolProvider.getSystemJavaCompiler() seems to give a new instance or one that is not configured with the same classpath...
Thanks.
[745 byte] By [
pfnguyena] at [2007-11-27 1:52:36]
# 2
Bruce,
I haven't tried that, but I've been looking at javac sources, and unless that's new for java 7, it won't work. ProcessingEnvironment is actually an instance of JavacProcessingEnvironment (which doesn't implement o r extend any other classes [that I'm interested in]).
Doing some hacks, I'm able to do what I want... but since it involves using many of the javac internal classes, I'm afraid it won't work going forward :(
[
// Going with
com.sun.tools.javac.util.Context ctx = ((JavacProcessingEnvironment)processingEnv).getContext();
ctx.put(TaskListener.class, myTaskListener);
]
# 4
> Am I right that your task listener is a
> 'post-bytecode-generation' hook and that it enables
> you to instrument the bytecode once
> compilation/bytecode generation is done? that would
> be so cool (even though no-api)
Yes, it was my intent to do compile-time instrumentation, but that approach did not work--instead, see my @Property annotation thread to see how it's done.
