/********************************************************************************
 * Copyright (c) 2022 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available at
 * https://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.
 *
 * SPDX-License-Identifier: Apache-2.0
 ********************************************************************************/
package org.eclipse.emt4j.agent.common.rule.systemclassloader;

import org.eclipse.emt4j.common.IncompatibleProbe;
import org.objectweb.asm.MethodVisitor;

import static org.objectweb.asm.Opcodes.ASM9;
import static org.objectweb.asm.Opcodes.CHECKCAST;

public class SystemClassLoaderMethodVisitor extends MethodVisitor implements IncompatibleProbe {
    private boolean found;

    public SystemClassLoaderMethodVisitor() {
        super(ASM9);
    }

    @Override
    public boolean isIncompatible() {
        return found;
    }

    @Override
    public void visitTypeInsn(int opcode, String type) {
        if (opcode == CHECKCAST && type.equals("java/net/URLClassLoader")) {
            found = true;
        }
        super.visitTypeInsn(opcode, type);
    }
}
