CLJ-855: Util.sneakyThrow() throws any exception without being required to declare or catch it

Signed-off-by: Rich Hickey <[email protected]>

Author: bpsm

src/jvm/clojure/lang/Util.java

@@ -179,4 +179,24 @@ static public RuntimeException runtimeException(Throwable e){
 	return new RuntimeException(e);
 }
 
+/**
+ * Throw even checked exceptions without being required
+ * to declare them or catch them. Suggested idiom:
+ * <p>
+ * <code>throw sneakyThrow( some exception );</code>
+ */
+static public RuntimeException sneakyThrow(Throwable t) {
+    // http://www.mail-archive.com/[email protected]/msg05984.html
+	if (t == null)
+		throw new NullPointerException();
+	Util.<RuntimeException>sneakyThrow0(t);
+	return null;
+}
+
+@SuppressWarnings("unchecked")
+static private <T extends Throwable> void sneakyThrow0(Throwable t) throws T {
+	throw (T) t;
 }
+
+}
+