/*

 * Copyright (c) 2017, 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

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package org.graalvm.compiler.hotspot.replacements;

import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfig.INJECTED_VMCONFIG;

import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.CLASS_ARRAY_KLASS_LOCATION;

import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.arrayKlassOffset;

import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.loadKlassFromObject;

import java.lang.reflect.Array;

import org.graalvm.compiler.api.directives.GraalDirectives;

import org.graalvm.compiler.api.replacements.ClassSubstitution;

import org.graalvm.compiler.api.replacements.MethodSubstitution;

import org.graalvm.compiler.nodes.java.DynamicNewArrayNode;

// JaCoCo Exclude

/**

 * Substitutions for {@link Array} methods.

 */

@ClassSubstitution(Array.class)

public class HotSpotArraySubstitutions {

    @MethodSubstitution

    public static Object newInstance(Class<?> componentType, int length) {

        if (componentType == null || loadKlassFromObject(componentType, arrayKlassOffset(INJECTED_VMCONFIG), CLASS_ARRAY_KLASS_LOCATION).isNull()) {

            // Exit the intrinsic here for the case where the array class does not exist

            return newInstance(componentType, length);

        }

        return DynamicNewArrayNode.newArray(GraalDirectives.guardingNonNull(componentType), length);

    }

}