Add Throwables utilities, inspired by Guava

src/main/java/net/openhft/chronicle/hash/impl/util/Throwables.java

@@ -0,0 +1,48 @@
+/*
+ *      Copyright (C) 2012, 2016  higherfrequencytrading.com
+ *      Copyright (C) 2016 Roman Leventov
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU Lesser General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU Lesser General Public License for more details.
+ *
+ *      You should have received a copy of the GNU Lesser General Public License
+ *      along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.openhft.chronicle.hash.impl.util;
+
+/**
+ * Inspired by Guava's Throwables
+ */
+public final class Throwables {
+
+    public static RuntimeException propagate(Throwable t) {
+        Objects.requireNonNull(t);
+        if (t instanceof Error)
+            throw (Error) t;
+        if (t instanceof RuntimeException)
+            throw (RuntimeException) t;
+        throw new RuntimeException(t);
+    }
+
+    public static <T extends Throwable> T propagateNotWrapping(
+            Throwable t, Class<T> notWrappingThrowableType) throws T {
+        Objects.requireNonNull(t);
+        Objects.requireNonNull(notWrappingThrowableType);
+        if (t instanceof Error)
+            throw (Error) t;
+        if (t instanceof RuntimeException)
+            throw (RuntimeException) t;
+        if (notWrappingThrowableType.isInstance(t))
+            throw notWrappingThrowableType.cast(t);
+        throw new RuntimeException(t);
+    }
+
+    private Throwables() {}
+}