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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/VirtualState.java @ 19529:8fc336a04d77

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Create TYPE fields for LIRInstruction and CompositeValue. Renaming NodeClass#get to NodeClass#create.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Fri, 20 Feb 2015 22:22:55 +0100
parents 880717e44675
children 05183a084a08
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1 /*
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2 * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.nodes;
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24
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25 import com.oracle.graal.graph.*;
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26 import com.oracle.graal.nodeinfo.*;
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27
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28 /**
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29 * Base class for nodes that contain "virtual" state, like FrameState and VirtualObjectState.
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30 * Subclasses of this class will be treated in a special way by the scheduler.
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31 */
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32 @NodeInfo(allowedUsageTypes = {InputType.State})
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33 public abstract class VirtualState extends Node {
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34
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35 protected VirtualState(NodeClass<? extends VirtualState> c) {
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36 super(c);
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37 }
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38
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39 public static final NodeClass<VirtualState> TYPE = NodeClass.create(VirtualState.class);
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40
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41 public abstract static class NodeClosure<T extends Node> {
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42
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43 public abstract void apply(Node usage, T node);
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44 }
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45
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46 public interface VirtualClosure {
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47
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48 void apply(VirtualState node);
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49 }
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50
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51 public abstract VirtualState duplicateWithVirtualState();
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52
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53 public abstract void applyToNonVirtual(NodeClosure<? super ValueNode> closure);
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54
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55 /**
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56 * Performs a <b>pre-order</b> iteration over all elements reachable from this state that are a
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57 * subclass of {@link VirtualState}.
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58 */
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59 public abstract void applyToVirtual(VirtualClosure closure);
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60
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61 public abstract boolean isPartOfThisState(VirtualState state);
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62
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63 @Override
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64 public final StructuredGraph graph() {
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65 return (StructuredGraph) super.graph();
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66 }
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67
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68 }