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 * 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.
 *
 * 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.graalvm.compiler.hotspot.test;

import java.util.Objects;

import org.junit.Test;

import org.graalvm.compiler.core.common.GraalOptions;
import org.graalvm.compiler.core.test.GraalCompilerTest;
import org.graalvm.compiler.nodes.ConstantNode;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.options.OptionValues;
import org.graalvm.compiler.phases.tiers.Suites;

import jdk.vm.ci.meta.JavaKind;

public class LoadJavaMirrorWithKlassTest extends GraalCompilerTest {

    private static class Wrapper {
        private Class<?> clazz;

        @Override
        public boolean equals(Object obj) {
            if (obj instanceof Wrapper) {
                return Objects.equals(this.clazz, ((Wrapper) obj).clazz);
            } else {
                return false;
            }
        }

        @Override
        public int hashCode() {
            return clazz.hashCode();
        }

        @Override
        public String toString() {
            return "Wrapper-" + clazz;
        }
    }

    @Override
    @SuppressWarnings("try")
    protected Suites createSuites(OptionValues options) {
        return super.createSuites(getOptions());
    }

    private static OptionValues getOptions() {
        return new OptionValues(getInitialOptions(), GraalOptions.ImmutableCode, true);
    }

    @Override
    protected boolean checkLowTierGraph(StructuredGraph graph) {
        for (ConstantNode constantNode : graph.getNodes().filter(ConstantNode.class)) {
            assert constantNode.asJavaConstant() == null || constantNode.asJavaConstant().getJavaKind() != JavaKind.Object ||
                            constantNode.asJavaConstant().isDefaultForKind() : "Found unexpected object constant " +
                                            constantNode + ", this should have been removed by the LoadJavaMirrorWithKlassPhase.";
        }
        return true;
    }

    public static Class<?> classConstant() {
        return Wrapper.class;
    }

    @Test
    public void testClassConstant() {
        test(getOptions(), "classConstant");
    }

    public static Class<?> primitiveClassConstant() {
        return int.class;
    }

    @Test
    public void testPrimitiveClassConstant() {
        test(getOptions(), "primitiveClassConstant");
    }

    public static Wrapper compressedClassConstant(Wrapper w) {
        w.clazz = Wrapper.class;
        return w;
    }

    @Test
    public void testCompressedClassConstant() {
        ArgSupplier arg = () -> new Wrapper();
        test(getOptions(), "compressedClassConstant", arg);
    }

    public static Wrapper compressedPrimitiveClassConstant(Wrapper w) {
        w.clazz = int.class;
        return w;
    }

    @Test
    public void testCompressedPrimitiveClassConstant() {
        ArgSupplier arg = () -> new Wrapper();
        test(getOptions(), "compressedPrimitiveClassConstant", arg);
    }
}