Create more compact children lists for Nodes with a single child.

jruby · May 14, 2015 · 5ed91b4 · 5ed91b4
1 parent 99bcc89
commit 5ed91b4
Showing 1 changed file with 3 additions and 6 deletions.
diff --git a/core/src/main/java/org/jruby/ast/Node.java b/core/src/main/java/org/jruby/ast/Node.java
@@ -34,6 +34,7 @@
 package org.jruby.ast;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 import org.jruby.ParseResult;
@@ -79,11 +80,7 @@ public void setPosition(ISourcePosition position) {
     public abstract List<Node> childNodes();
 
     protected static List<Node> createList(Node node) {
-        ArrayList<Node> list = new ArrayList<>(1);
-
-        list.add(node);
-
-        return list;
+        return Collections.singletonList(node);
     }
 
     protected static List<Node> createList(Node node1, Node node2) {
@@ -218,4 +215,4 @@ public boolean needsDefinitionCheck() {
     public boolean containsVariableAssignment() {
         return containsVariableAssignment;
     }
-}
+}