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70 righe
1.6 KiB
Java
70 righe
1.6 KiB
Java
import org.aspectj.testing.Tester;
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public class AroundChangeThis {
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public static void main(String[] args) {
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C c1 = new C("c1");
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C c2 = new C("c2");
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SubC sc = new SubC("sc");
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c1.m(c2);
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Tester.checkAndClearEvents(new String[] { "c1.m(c2)", "c2.m(c1)" });
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c1.m(sc);
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Tester.checkAndClearEvents(new String[] { "c1.m(sc)", "sc.m(c1)" });
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// this is the 1.3 behaviour
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// sc.m(c1);
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// Tester.checkAndClearEvents(new String[] { "sc.m(c1)", "c1.m(sc)" });
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try {
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// the 1.4 behaviour is....
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// in byte code we have a call to SubC.m
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sc.m(c1);
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Tester.checkFailed("Expected ClassCastException");
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} catch (ClassCastException e) {
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}
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try {
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sc.m1(c1);
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Tester.checkFailed("Expected ClassCastException");
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} catch (ClassCastException e) {
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}
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Tester.printEvents();
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}
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}
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class C {
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private String name;
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public C(String name) { this.name = name; }
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public String toString() { return name; }
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public void m(Object other) {
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Tester.event(this + ".m(" + other + ")");
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}
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}
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class SubC extends C {
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public SubC(String name) { super(name); }
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public void m1(Object other) {
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Tester.event(this + ".m1(" + other + ")");
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}
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}
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aspect A {
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/* Swaps this with arg for calls of C.m(C) */
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void around(C thisC, C argC): execution(void m*(*)) && this(thisC) && args(argC) {
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proceed(argC, thisC);
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proceed(thisC, argC);
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}
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void around(C thisC, C argC): call(void m*(*)) && target(thisC) && args(argC) {
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proceed(argC, thisC);
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}
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}
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