From 34eb2678348c7e6bf154c31b698c3af83db3517b Mon Sep 17 00:00:00 2001
From: tcurtis <tyler.l.curtis@gmail.com>
Date: Sat, 7 Aug 2010 21:10:02 -0500
Subject: [PATCH] Add Tree::Optimizer::Pass.transformer-class method to
 simplify subclassing.

---
 src/Tree/Optimizer/Pass.nqp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Tree/Optimizer/Pass.nqp b/src/Tree/Optimizer/Pass.nqp
index 63b8a18..de082f1 100644
--- a/src/Tree/Optimizer/Pass.nqp
+++ b/src/Tree/Optimizer/Pass.nqp
@@ -68,10 +68,14 @@ method run ($tree) {
     }
 }
 
+method transformer-class () {
+    Tree::Optimizer::Transformer::Single;
+}
+
 method generate-transformer () {
     if pir::defined__IP($!when) {
         $!when.transformer_class.new($!when, $!transformation);
     } else {
-        Tree::Optimizer::Transformer::Single.new($!transformation);
+        self.transformer-class.new($!transformation);
     }
 }