hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/java/AbstractNewArrayNode.java

/*
 * Copyright (c) 2009, 2011, 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.nodes.java;

import org.graalvm.compiler.core.common.type.Stamp;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FrameState;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.spi.ArrayLengthProvider;

/**
 * The {@code AbstractNewArrayNode} is used for all 1-dimensional array allocations.
 */
@NodeInfo
public abstract class AbstractNewArrayNode extends AbstractNewObjectNode implements ArrayLengthProvider {

    public static final NodeClass<AbstractNewArrayNode> TYPE = NodeClass.create(AbstractNewArrayNode.class);
    @Input protected ValueNode length;

    @Override
    public ValueNode length() {
        return length;
    }

    protected AbstractNewArrayNode(NodeClass<? extends AbstractNewArrayNode> c, Stamp stamp, ValueNode length, boolean fillContents, FrameState stateBefore) {
        super(c, stamp, fillContents, stateBefore);
        this.length = length;
    }

    /**
     * The list of node which produce input for this instruction.
     */
    public ValueNode dimension(int index) {
        assert index == 0;
        return length();
    }

    /**
     * The rank of the array allocated by this node, i.e. how many array dimensions.
     */
    public int dimensionCount() {
        return 1;
    }
}