12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- import java.lang.reflect.Method;
-
- public class StackError {
- public static void main(String args[]) {
- new StackError().testEqualsNull();
- }
-
- void assertTrue(String msg, boolean b) {}
-
- public void testEqualsNull() {
- StackError one = new StackError();
- StackError two = new StackError();
- assertTrue("equal", one.equals(two)); // does not work
- //boolean yes = one.equals(two); // works
- }
-
- public boolean equals(Object other) {
- return true;
- }
- }
-
- aspect EqualsContract {
- pointcut equalsCall(Object thisOne, Object otherOne):
- target(Object+) &&
-
- target(thisOne) &&
- call(public boolean equals(Object+)) &&
- args(otherOne) &&
- !within(EqualsContract);
-
- boolean around(Object thisOne, Object otherOne):
- equalsCall(thisOne, otherOne) {
- boolean result = proceed(thisOne, otherOne);
- Class cls = thisOne.getClass();
- String name = cls.getName();
- boolean hasHashCode = false;
- try {
- Method m = cls.getDeclaredMethod("hashCode", null);
- String lookFor = "public int " + name + ".hashCode()";
- hasHashCode = lookFor.equals(m.toString());
- }
- catch (NoSuchMethodException nsme) {
- }
- return result;
- }
- }
|