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import java.lang.annotation.*;
@Retention(RetentionPolicy.RUNTIME)
@interface Colored { String color(); }
public class PreInitBinding {
public static void main(String[]argv) {
new A();
new B();
new C();
X.verifyRun();
}
}
class A {
@Colored(color="orange") public A() {}
}
class B {
@Colored(color="yellow") public B() {}
}
class C {
@Colored(color="brown") public C() {}
}
aspect X {
// Expected color order
static String exp[] = new String[]{"orange","yellow","brown"};
static int i = 0; // Count of advice executions
before(Colored c): preinitialization(new(..)) && !within(X) && @annotation(c) {
System.err.println(thisJoinPoint+" color="+c.color());
if (!c.color().equals(exp[i])) throw new RuntimeException("not "+exp[i]+"? "+c.color());
i++;
}
public static void verifyRun() {
if (X.i != exp.length)
throw new RuntimeException("Expected "+exp.length+" advice runs but did "+X.i);
}
}
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