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import java.lang.annotation.*;
@Retention(RetentionPolicy.RUNTIME)
@interface Colored { String color();}
@Colored(color="red") class RedClass {
public void m() { System.err.println("RedClass.m() running"); }
}
@Colored(color="green") class GreenClass {
public GreenClass() { System.err.println("GreenClass.ctor() running"); }
public void m() { System.err.println("GreenClass.m() running"); }
}
class NormalClass {
public void m() { System.err.println("NormalClass.m() running"); }
}
public class WithinBinding2 {
public static void main(String[]argv) {
new RedClass().m();
new NormalClass().m();
new GreenClass().m();
X.verifyRun();
}
}
aspect X {
static int red = 0;
static int green=0;
before(Colored c): @within(c) {
System.err.println(thisJoinPoint+" color="+c.color());
if (c.color().startsWith("r")) red++;
else if (c.color().startsWith("g")) green++;
else throw new RuntimeException("Didn't expect this color: "+c.color());
}
public static void verifyRun() {
System.err.println(red+" "+green);
if (red!=7) throw new RuntimeException("Expected 7 red join points but got "+red);
if (green!=9) throw new RuntimeException("Expected 9 green join points but got "+green);
}
}
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