/**
 * Copyright 2013 Netflix, Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package rx.util;

public class Exceptions {
    private Exceptions() {

    }

    public static RuntimeException propagate(Throwable t) {
        /**
         * The return type of RuntimeException is a trick for code to be like this:
         * 
         * throw Exceptions.propagate(e);
         * 
         * Even though nothing will return and throw via that 'throw', it allows the code to look like it
         * so it's easy to read and understand that it will always result in a throw.
         */
        if (t instanceof RuntimeException) {
            throw (RuntimeException) t;
        } else if (t instanceof Error) {
            throw (Error) t;
        } else {
            throw new RuntimeException(t);
        }
    }

}
/**
 * Copyright 2013 Netflix, Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package rx.util;

public class Exceptions {
    private Exceptions() {

    }

    public static RuntimeException propagate(Throwable t) {
        if (t instanceof RuntimeException) {
            throw (RuntimeException) t;
        } else {
            throw new RuntimeException(t);
        }
    }

}
--- 
+++ 
@@ -21,8 +21,18 @@
     }
 
     public static RuntimeException propagate(Throwable t) {
+        /**
+         * The return type of RuntimeException is a trick for code to be like this:
+         * 
+         * throw Exceptions.propagate(e);
+         * 
+         * Even though nothing will return and throw via that 'throw', it allows the code to look like it
+         * so it's easy to read and understand that it will always result in a throw.
+         */
         if (t instanceof RuntimeException) {
             throw (RuntimeException) t;
+        } else if (t instanceof Error) {
+            throw (Error) t;
         } else {
             throw new RuntimeException(t);
         }
Add Error propagation now that we use Throwable.
