Revert "Revert "Bratseth/allocation free hit field traversal""

3 files changed, 30 insertions, 0 deletions

diff --git a/vespajlib/src/main/java/com/yahoo/lang/MutableBoolean.java b/vespajlib/src/main/java/com/yahoo/lang/MutableBoolean.java
new file mode 100644
index 00000000000..b009ffdd2b6
--- /dev/null
+++ b/vespajlib/src/main/java/com/yahoo/lang/MutableBoolean.java
@@ -0,0 +1,24 @@
+// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.lang;
+
+/**
+ * A mutable boolean
+ *
+ * @author bratseth
+ */
+public class MutableBoolean {
+
+    private boolean value;
+
+    public MutableBoolean(boolean value) {
+        this.value = value;
+    }
+
+    public boolean get() { return value; }
+
+    public void set(boolean value) { this.value = value; }
+
+    @Override
+    public String toString() { return Boolean.toString(value); }
+
+}
diff --git a/vespajlib/src/main/java/com/yahoo/lang/MutableInteger.java b/vespajlib/src/main/java/com/yahoo/lang/MutableInteger.java
index 34e928db674..a988a3f6fa2 100644
--- a/vespajlib/src/main/java/com/yahoo/lang/MutableInteger.java
+++ b/vespajlib/src/main/java/com/yahoo/lang/MutableInteger.java
@@ -30,4 +30,7 @@ public class MutableInteger {
         return value;
     }
 
+    @Override
+    public String toString() { return Integer.toString(value); }
+
 }
diff --git a/vespajlib/src/main/java/com/yahoo/lang/MutableLong.java b/vespajlib/src/main/java/com/yahoo/lang/MutableLong.java
index e0e4a0828a9..36d3a8a6343 100644
--- a/vespajlib/src/main/java/com/yahoo/lang/MutableLong.java
+++ b/vespajlib/src/main/java/com/yahoo/lang/MutableLong.java
@@ -30,4 +30,7 @@ public class MutableLong {
         return value;
     }
 
+    @Override
+    public String toString() { return Long.toString(value); }
+
 }