Add helper method to rethrow checked as unchecked

2 files changed, 23 insertions, 1 deletions

diff --git a/yolean/abi-spec.json b/yolean/abi-spec.json
index 4b68b2527b8..82bf59ebf87 100644
--- a/yolean/abi-spec.json
+++ b/yolean/abi-spec.json
@@ -40,7 +40,8 @@
       "public static void uncheckAndIgnore(com.yahoo.yolean.Exceptions$RunnableThrowingIOException, java.lang.Class)",
       "public static java.lang.Object uncheck(com.yahoo.yolean.Exceptions$SupplierThrowingIOException)",
       "public static varargs java.lang.Object uncheck(com.yahoo.yolean.Exceptions$SupplierThrowingIOException, java.lang.String, java.lang.String[])",
-      "public static java.lang.Object uncheckAndIgnore(com.yahoo.yolean.Exceptions$SupplierThrowingIOException, java.lang.Class)"
+      "public static java.lang.Object uncheckAndIgnore(com.yahoo.yolean.Exceptions$SupplierThrowingIOException, java.lang.Class)",
+      "public static java.lang.RuntimeException throwUnchecked(java.lang.Throwable)"
     ],
     "fields": []
   },
diff --git a/yolean/src/main/java/com/yahoo/yolean/Exceptions.java b/yolean/src/main/java/com/yahoo/yolean/Exceptions.java
index 063ba70c75d..c377ee3ac37 100644
--- a/yolean/src/main/java/com/yahoo/yolean/Exceptions.java
+++ b/yolean/src/main/java/com/yahoo/yolean/Exceptions.java
@@ -160,4 +160,25 @@ public class Exceptions {
     public interface SupplierThrowingIOException<T> {
         T get() throws IOException;
     }
+
+    /**
+     * Allows treating checked exceptions as unchecked.
+     * Usage:
+     * throw throwUnchecked(e);
+     * The reason for the return type is to allow writing throw at the call site
+     * instead of just calling throwUnchecked. Just calling throwUnchecked
+     * means that the java compiler won't know that the statement will throw an exception,
+     * and will therefore complain on things such e.g. missing return value.
+     */
+    public static RuntimeException throwUnchecked(Throwable e) {
+        throwUncheckedImpl(e);
+        return new RuntimeException(); // Non-null return value to stop tooling from complaining about potential NPE
+    }
+
+    @SuppressWarnings("unchecked")
+    private static <T extends Throwable> void throwUncheckedImpl(Throwable t) throws T {
+        throw (T)t;
+    }
+
+
 }