From a45f1908f186e73908e37ac7a3fc6b1172b4f928 Mon Sep 17 00:00:00 2001
From: Andrea Cavalli <andrea@cavallium.it>
Date: Thu, 24 Feb 2022 02:24:24 +0100
Subject: [PATCH] Avoid creating itself if the value set is equal

---
 .../it/cavallium/data/generator/SourcesGenerator.java     | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/java/it/cavallium/data/generator/SourcesGenerator.java b/src/main/java/it/cavallium/data/generator/SourcesGenerator.java
index a2dffaf..554d9b7 100644
--- a/src/main/java/it/cavallium/data/generator/SourcesGenerator.java
+++ b/src/main/java/it/cavallium/data/generator/SourcesGenerator.java
@@ -2733,6 +2733,14 @@ public class SourcesGenerator {
 		setterMethod.returns(classType);
 		if (!fieldType.isPrimitive()) {
 			setterMethod.addStatement("$T.requireNonNull(" + fieldName + ")", Objects.class);
+
+			setterMethod.beginControlFlow("if ($T.equals(" + fieldName + ", this." + fieldName + "))", Objects.class);
+			setterMethod.addStatement("return this");
+			setterMethod.endControlFlow();
+		} else {
+			setterMethod.beginControlFlow("if (" + fieldName + " == this." + fieldName + ")");
+			setterMethod.addStatement("return this");
+			setterMethod.endControlFlow();
 		}
 		setterMethod.addCode("$[return $T.of(\n$]", classType);
 		setterMethod.addCode("$>");