From 8e4324440db414cd72a548335d6f50d3ec028762 Mon Sep 17 00:00:00 2001
From: Rafael Winterhalter <rafael.wth@gmail.com>
Date: Fri, 16 Feb 2024 13:41:50 +0100
Subject: [PATCH] Support Java 23.

---
 .../java/net/bytebuddy/ClassFileVersion.java  |  9 +++++++
 .../bytebuddy/ClassFileVersionOtherTest.java  |  2 +-
 .../net/bytebuddy/ClassFileVersionTest.java   |  3 ++-
 pom.xml                                       | 27 +++++++++++++++++++
 4 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/byte-buddy-dep/src/main/java/net/bytebuddy/ClassFileVersion.java b/byte-buddy-dep/src/main/java/net/bytebuddy/ClassFileVersion.java
index e3ab1110c6..4d79b72ad6 100644
--- a/byte-buddy-dep/src/main/java/net/bytebuddy/ClassFileVersion.java
+++ b/byte-buddy-dep/src/main/java/net/bytebuddy/ClassFileVersion.java
@@ -155,6 +155,11 @@ public class ClassFileVersion implements Comparable<ClassFileVersion>, Serializa
      */
     public static final ClassFileVersion JAVA_V22 = new ClassFileVersion(Opcodes.V22);
 
+    /**
+     * The class file version of Java 23.
+     */
+    public static final ClassFileVersion JAVA_V23 = new ClassFileVersion(Opcodes.V22 + 1);
+
     /**
      * A version locator for the executing JVM.
      */
@@ -251,6 +256,8 @@ public static ClassFileVersion ofJavaVersionString(String javaVersionString) {
             return JAVA_V21;
         } else if (javaVersionString.equals("1.22") || javaVersionString.equals("22")) {
             return JAVA_V22;
+        } else if (javaVersionString.equals("1.23") || javaVersionString.equals("23")) {
+            return JAVA_V23;
         } else {
             if (OpenedClassReader.EXPERIMENTAL) {
                 try {
@@ -320,6 +327,8 @@ public static ClassFileVersion ofJavaVersion(int javaVersion) {
                 return JAVA_V21;
             case 22:
                 return JAVA_V22;
+            case 23:
+                return JAVA_V23;
             default:
                 if (OpenedClassReader.EXPERIMENTAL && javaVersion > 0) {
                     return new ClassFileVersion(BASE_VERSION + javaVersion);
diff --git a/byte-buddy-dep/src/test/java/net/bytebuddy/ClassFileVersionOtherTest.java b/byte-buddy-dep/src/test/java/net/bytebuddy/ClassFileVersionOtherTest.java
index 6352930af2..bb0b008fbd 100644
--- a/byte-buddy-dep/src/test/java/net/bytebuddy/ClassFileVersionOtherTest.java
+++ b/byte-buddy-dep/src/test/java/net/bytebuddy/ClassFileVersionOtherTest.java
@@ -70,7 +70,7 @@ public void testClassFile() throws Exception {
 
     @Test
     public void testThisVm() {
-        ClassFileVersion.ofThisVm();
+        assertThat(ClassFileVersion.ofThisVm(), is(ClassFileVersion.ofThisVm()));
     }
 
     @Test
diff --git a/byte-buddy-dep/src/test/java/net/bytebuddy/ClassFileVersionTest.java b/byte-buddy-dep/src/test/java/net/bytebuddy/ClassFileVersionTest.java
index e62dd4ffe9..5d0cfef4bc 100644
--- a/byte-buddy-dep/src/test/java/net/bytebuddy/ClassFileVersionTest.java
+++ b/byte-buddy-dep/src/test/java/net/bytebuddy/ClassFileVersionTest.java
@@ -79,7 +79,8 @@ public static Collection<Object[]> data() {
                 {19, 19, Arrays.asList("1.19", "19"), Opcodes.V19, (short) 63, (short) 0, true, true, true},
                 {20, 20, Arrays.asList("1.20", "20"), Opcodes.V20, (short) 64, (short) 0, true, true, true},
                 {21, 21, Arrays.asList("1.21", "21"), Opcodes.V21, (short) 65, (short) 0, true, true, true},
-                {22, 22, Arrays.asList("1.22", "22"), Opcodes.V22, (short) 66, (short) 0, true, true, true}
+                {22, 22, Arrays.asList("1.22", "22"), Opcodes.V22, (short) 66, (short) 0, true, true, true},
+                {23, 23, Arrays.asList("1.23", "23"), Opcodes.V22 + 1, (short) 67, (short) 0, true, true, true}
         });
     }
 
diff --git a/pom.xml b/pom.xml
index a316a6bed1..d1431d527c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -765,6 +765,21 @@
                 <jacoco.skip>true</jacoco.skip>
             </properties>
         </profile>
+        <!-- Runs the build with compatibility for Java 22 JVMs. -->
+        <profile>
+            <id>java23-compatibility</id>
+            <activation>
+                <activeByDefault>false</activeByDefault>
+                <jdk>23</jdk>
+            </activation>
+            <properties>
+                <sourcecode.main.version>8</sourcecode.main.version>
+                <sourcecode.test.version>8</sourcecode.test.version>
+                <bytecode.main.version>8</bytecode.main.version>
+                <bytecode.test.version>8</bytecode.test.version>
+                <jacoco.skip>true</jacoco.skip>
+            </properties>
+        </profile>
         <!-- Builds using a byte code target for Java 6. -->
         <profile>
             <id>java6</id>
@@ -956,6 +971,18 @@
                 <spotbugs.skip>true</spotbugs.skip>
             </properties>
         </profile>
+        <!-- Builds using a byte code target for Java 22. -->
+        <profile>
+            <id>java23</id>
+            <activation>
+                <activeByDefault>false</activeByDefault>
+            </activation>
+            <properties>
+                <bytecode.main.version>23</bytecode.main.version>
+                <bytecode.test.version>23</bytecode.test.version>
+                <spotbugs.skip>true</spotbugs.skip>
+            </properties>
+        </profile>
         <!-- Enables dynamic agent loading when running a JDK 22 or newer. -->
         <profile>
             <id>surefire-enable-dynamic-attach</id>