- Added concat methods

1 files changed, 9 insertions, 0 deletions

diff --git a/sources/scalac/ast/Tree.java.tmpl b/sources/scalac/ast/Tree.java.tmpl
index ca2f06242a..e39768b597 100644
--- a/sources/scalac/ast/Tree.java.tmpl
+++ b/sources/scalac/ast/Tree.java.tmpl
@@ -165,6 +165,15 @@ public class Tree {
         return clone;
     }
 
+    /** Returns the concatenation of the two arrays. */
+    public static Tree[] concat(Tree[] array1, Tree[] array2) {
+        if (array1.length == 0) return array2;
+        if (array2.length == 0) return array1;
+        Tree[] clone = cloneArray(array1.length, array2);
+        for (int i = 0; i < array1.length; i++) clone[i] = array1[i];
+        return clone;
+    }
+
     public Tree duplicate() {
 	return duplicator.transform(this);
     }