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 * Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 *
 * 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.
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package org.openjdk.bench.jdk.classfile;

import java.lang.classfile.ClassTransform;
import java.lang.classfile.ClassFile;
import java.lang.classfile.CodeTransform;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.infra.Blackhole;

/**
 * AdHocAdapt
 */
public class AdHocAdapt extends AbstractCorpusBenchmark {
    public enum X {
        LIFT(ClassTransform.transformingMethodBodies(CodeTransform.ACCEPT_ALL)),
        LIFT1(ClassTransform.transformingMethodBodies(CodeTransform.ACCEPT_ALL
                                                          .andThen(CodeTransform.ACCEPT_ALL))),
        LIFT2(ClassTransform.transformingMethodBodies(CodeTransform.ACCEPT_ALL)
                            .andThen(ClassTransform.transformingMethodBodies(CodeTransform.ACCEPT_ALL)));

        ClassTransform transform;

        X(ClassTransform transform) {
            this.transform = transform;
        }
    }

    @Param
    X transform;

    @Benchmark
    @BenchmarkMode(Mode.Throughput)
    public void transform(Blackhole bh) {
        var cc = ClassFile.of();
        for (byte[] bytes : classes)
            bh.consume(cc.transformClass(cc.parse(bytes), transform.transform));
    }
}