From a1237a636bfc99076a0c2874b6ff97e96e839e96 Mon Sep 17 00:00:00 2001
From: Andreas Schildbach <andreas@schildbach.de>
Date: Wed, 5 Apr 2023 18:19:21 +0200
Subject: [PATCH] ScriptBuilder: extract private helper `p2whOutputScript()`

---
 .../main/java/org/bitcoinj/script/ScriptBuilder.java | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/core/src/main/java/org/bitcoinj/script/ScriptBuilder.java b/core/src/main/java/org/bitcoinj/script/ScriptBuilder.java
index 8c959f52b..f3e53bf18 100644
--- a/core/src/main/java/org/bitcoinj/script/ScriptBuilder.java
+++ b/core/src/main/java/org/bitcoinj/script/ScriptBuilder.java
@@ -317,16 +317,20 @@ public class ScriptBuilder {
             else
                 throw new IllegalStateException("Cannot handle " + scriptType);
         } else if (to instanceof SegwitAddress) {
-            // OP_0 <pubKeyHash|scriptHash>
-            SegwitAddress toSegwit = (SegwitAddress) to;
-            smallNum(toSegwit.getWitnessVersion());
-            data(toSegwit.getWitnessProgram());
+            p2whOutputScript((SegwitAddress) to);
         } else {
             throw new IllegalStateException("Cannot handle " + to);
         }
         return this;
     }
 
+    private ScriptBuilder p2whOutputScript(SegwitAddress address) {
+        checkState(chunks.isEmpty());
+        // OP_0 <pubKeyHash|scriptHash>
+        return smallNum(address.getWitnessVersion())
+                .data(address.getWitnessProgram());
+    }
+
     /**
      * Creates a scriptSig that can redeem a P2PKH output.
      * If given signature is null, incomplete scriptSig will be created with OP_0 instead of signature