JBR-8602 Migrate JBR API backend to Classfile API

Author: YaaZ

src/java.base/share/classes/com/jetbrains/bootstrap/JBRApiBootstrap.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2023 JetBrains s.r.o.
+ * Copyright 2025 JetBrains s.r.o.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,7 +25,7 @@
 
 package com.jetbrains.bootstrap;
 
-import com.jetbrains.internal.JBRApi;
+import com.jetbrains.internal.jbrapi.JBRApi;
 
 import java.lang.invoke.MethodHandles;
 import java.util.Map;

src/java.base/share/classes/com/jetbrains/exported/JBRApi.java

@@ -1,3 +1,28 @@
+/*
+ * Copyright 2025 JetBrains s.r.o.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
 package com.jetbrains.exported;
 
 import jdk.internal.reflect.CallerSensitive;
@@ -66,7 +91,7 @@ private JBRApi() {}
     public static <T> T internalService() {
         var caller = (Class<T>) Reflection.getCallerClass();
         if (caller == null) throw new IllegalCallerException("No caller frame");
-        return com.jetbrains.internal.JBRApi.getInternalService(caller);
+        return com.jetbrains.internal.jbrapi.JBRApi.getInternalService(caller);
     }
 
     /**

src/java.base/share/classes/com/jetbrains/exported/JBRApiSupport.java

@@ -1,5 +1,32 @@
+/*
+ * Copyright 2025 JetBrains s.r.o.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
 package com.jetbrains.exported;
 
+import com.jetbrains.internal.jbrapi.JBRApi;
+
 import java.lang.annotation.Annotation;
 import java.lang.invoke.CallSite;
 import java.lang.invoke.ConstantCallSite;
@@ -32,22 +59,22 @@ public static synchronized Object bootstrap(Class<?> apiInterface,
                                                 Class<? extends Annotation> providesAnnotation,
                                                 Map<Enum<?>, Class[]> knownExtensions,
                                                 Function<Method, Enum<?>> extensionExtractor) {
-        if (!com.jetbrains.internal.JBRApi.ENABLED) return null;
-        com.jetbrains.internal.JBRApi.init(
+        if (!JBRApi.ENABLED) return null;
+        JBRApi.init(
                 null,
                 serviceAnnotation,
                 providedAnnotation,
                 providesAnnotation,
                 knownExtensions,
                 extensionExtractor);
-        return com.jetbrains.internal.JBRApi.getService(apiInterface);
+        return JBRApi.getService(apiInterface);
     }
 
     /**
      * Bootstrap method for JBR API dynamic invocations.
      */
     public static CallSite bootstrapDynamic(MethodHandles.Lookup caller, String name, MethodType type) {
-        return new ConstantCallSite(com.jetbrains.internal.JBRApi.bindDynamic(caller, name, type));
+        return new ConstantCallSite(JBRApi.bindDynamic(caller, name, type));
     }
 
     /**