[2.4] improve AnnotationInstance.hashCode() #332
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The `AnnotationInstance.equals()` method considers two annotations that are basically the same as distinct if they don't have the same `target`. However, the `AnnotationInstance.hashCode()` method does not take the `target` into account at all, which leads to hash table collisions. This commit uses the `AnnotationTarget` information to spread out the `AnnotationInstance` hash code to make collisions less likely.
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The
AnnotationInstance.equals()method considers two annotations that are basically the same as distinct if they don't have the sametarget. However, theAnnotationInstance.hashCode()method does not take thetargetinto account at all, which leads to hash table collisions. This commit uses theAnnotationTargetinformation to spread out theAnnotationInstancehash code to make collisions less likely.