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Throw IllegalArgumentException if trackParentCause() is given a Block.

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sk89q 2014-08-18 02:35:41 -07:00
parent 095f2aa67e
commit 3eb5c65a3d
1 changed files with 10 additions and 0 deletions
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10
src/main/java/com/sk89q/worldguard/bukkit/cause/Cause.java
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@ -180,10 +180,20 @@ public static Cause unknown() {
/** /**
* Add a parent cause to a {@code Metadatable} object. * Add a parent cause to a {@code Metadatable} object.
* *
* <p>Note that {@code target} cannot be an instance of
* {@link Block} because {@link #create(Object...)} will not bother
* checking for such data on blocks (because it is relatively costly
* to do so).</p>
*
* @param target the target * @param target the target
* @param parent the parent cause * @param parent the parent cause
* @throws IllegalArgumentException thrown if {@code target} is an instance of {@link Block}
*/ */
public static void trackParentCause(Metadatable target, Object parent) { public static void trackParentCause(Metadatable target, Object parent) {
if (target instanceof Block) {
throw new IllegalArgumentException("Can't track causes on Blocks because Cause doesn't check block metadata");
}
WGMetadata.put(target, CAUSE_KEY, parent); WGMetadata.put(target, CAUSE_KEY, parent);
} }