Re: Distinguishing between different access modifiers for a method in the MethodVisitor

You can pass access flags from class visitor to method visitor when
the latter is created.



On Mon, Feb 26, 2018 at 7:43 PM, Aniket Panse <[email protected]> wrote:
> Hello List!
>
> I'm trying to call a function before every "synchronized" method, but I'm
> having trouble with it.
>
> Say I have a class like so:
>
> public class HelloWorld {
>   public static void main() {
>     myMethod();
>   }
>   public synchronized myMethod() {
>     System.out.println("Hello World!");
>   }
> }
>
> I'd like to print something out every time a synchronized method is called.
> So I write a MethodAdaptor:
>
> public class MethodAdapter extends MethodVisitor {
>   @Override
>   public void visitMethodInsn(int opcode, String owner, String name, String
> desc, boolean itf) {
>     // I'll add a call to System.out.println() here
>     // but how do I know whether this method is synchronized??
>   }
> }
>
> I realize that the class visitor does have access to the method's modifiers,
> but how do I make that information available to the MethodAdapter?
>
> Thanks!
> -- Aniket
>
>
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