Override equals()/hashCode() for RS BaseObj.

This will be used by slang reflection to type-check parameters to functions
that are of Allocation types (such as what happens with forEach).

BUG=4203264

Change-Id: I2ba94531bbf53becf7695b253e1faa3dff099894

1 files changed, 30 insertions, 0 deletions

diff --git a/graphics/java/android/renderscript/BaseObj.java b/graphics/java/android/renderscript/BaseObj.java
index a17e735..63e7dd1 100644
--- a/graphics/java/android/renderscript/BaseObj.java
+++ b/graphics/java/android/renderscript/BaseObj.java
@@ -134,5 +134,35 @@ public class BaseObj {
         mName = mRS.nGetName(getID());
     }
 
+    /**
+     * Calculates the hash code value for a BaseObj.
+     *
+     * @return int
+     */
+    @Override
+    public int hashCode() {
+        return mID;
+    }
+
+    /**
+     * Compare the current BaseObj with another BaseObj for equality.
+     *
+     * @param obj The object to check equality with.
+     *
+     * @return boolean
+     */
+    @Override
+    public boolean equals(Object obj) {
+        // Early-out check to see if both BaseObjs are actually the same
+        if (this == obj)
+            return true;
+
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+
+        BaseObj b = (BaseObj) obj;
+        return mID == b.mID;
+    }
 }