1 /*
   2  * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.nodes.java;
  24 
  25 import org.graalvm.compiler.core.common.type.Stamp;
  26 import org.graalvm.compiler.graph.NodeClass;
  27 import org.graalvm.compiler.nodeinfo.NodeInfo;
  28 import org.graalvm.compiler.nodes.FrameState;
  29 import org.graalvm.compiler.nodes.ValueNode;
  30 import org.graalvm.compiler.nodes.spi.ArrayLengthProvider;
  31 
  32 /**
  33  * The {@code AbstractNewArrayNode} is used for all 1-dimensional array allocations.
  34  */
  35 @NodeInfo
  36 public abstract class AbstractNewArrayNode extends AbstractNewObjectNode implements ArrayLengthProvider {
  37 
  38     public static final NodeClass<AbstractNewArrayNode> TYPE = NodeClass.create(AbstractNewArrayNode.class);
  39     @Input protected ValueNode length;
  40 
  41     @Override
  42     public ValueNode length() {
  43         return length;
  44     }
  45 
  46     protected AbstractNewArrayNode(NodeClass<? extends AbstractNewArrayNode> c, Stamp stamp, ValueNode length, boolean fillContents, FrameState stateBefore) {
  47         super(c, stamp, fillContents, stateBefore);
  48         this.length = length;
  49     }
  50 
  51     /**
  52      * The list of node which produce input for this instruction.
  53      */
  54     public ValueNode dimension(int index) {
  55         assert index == 0;
  56         return length();
  57     }
  58 
  59     /**
  60      * The rank of the array allocated by this node, i.e. how many array dimensions.
  61      */
  62     public int dimensionCount() {
  63         return 1;
  64     }
  65 }