content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package io.activej.codegen.util;
  
  import org.objectweb.asm.ClassWriter;
  
  public final class DefiningClassWriter extends ClassWriter {
  	private final ClassLoader classLoader;
  
  	public DefiningClassWriter(ClassLoader classLoader) {
  		super(ClassWriter.COMPUTE_FRAMES);
  		this.classLoader = classLoader;
  	}
  
  	@Override
  	protected String getCommonSuperClass(String type1, String type2) {
  		Class<?> c, d;
  		try {
  			c = Class.forName(type1.replace('/', '.'), false, classLoader);
  			d = Class.forName(type2.replace('/', '.'), false, classLoader);
  		} catch (Exception e) {
  			//noinspection ThrowInsideCatchBlockWhichIgnoresCaughtException - toString() is used
  			throw new RuntimeException(e.toString());
  		}
  		if (c.isAssignableFrom(d)) {
  			return type1;
  		}
  		if (d.isAssignableFrom(c)) {
  			return type2;
  		}
  		if (c.isInterface() || d.isInterface()) {
  			return "java/lang/Object";
  		} else {
  			do {
  				c = c.getSuperclass();
  			} while (!c.isAssignableFrom(d));
  			return c.getName().replace('.', '/');
  		}
  	}
  }
  