From 029c3b5e1370706b850f772fb494171a7259e687 Mon Sep 17 00:00:00 2001
From: mrhbj <1825636423@qq.com>
Date: Wed, 11 Sep 2024 15:46:48 +0800
Subject: [PATCH] Modernize switch statements in FST (#13756)

---
 .../java/org/apache/lucene/util/fst/FST.java  | 20 +++++++------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/lucene/core/src/java/org/apache/lucene/util/fst/FST.java b/lucene/core/src/java/org/apache/lucene/util/fst/FST.java
index ead90dca24c..725ec7bcedd 100644
--- a/lucene/core/src/java/org/apache/lucene/util/fst/FST.java
+++ b/lucene/core/src/java/org/apache/lucene/util/fst/FST.java
@@ -481,19 +481,13 @@ public final class FST<T> implements Accountable {
     }
     INPUT_TYPE inputType;
     final byte t = metaIn.readByte();
-    switch (t) {
-      case 0:
-        inputType = INPUT_TYPE.BYTE1;
-        break;
-      case 1:
-        inputType = INPUT_TYPE.BYTE2;
-        break;
-      case 2:
-        inputType = INPUT_TYPE.BYTE4;
-        break;
-      default:
-        throw new CorruptIndexException("invalid input type " + t, metaIn);
-    }
+    inputType =
+        switch (t) {
+          case 0 -> INPUT_TYPE.BYTE1;
+          case 1 -> INPUT_TYPE.BYTE2;
+          case 2 -> INPUT_TYPE.BYTE4;
+          default -> throw new CorruptIndexException("invalid input type " + t, metaIn);
+        };
     long startNode = metaIn.readVLong();
     long numBytes = metaIn.readVLong();
     return new FSTMetadata<>(inputType, outputs, emptyOutput, startNode, version, numBytes);