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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/AccessFieldNode.java @ 19403:7e2c87dae93e

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Create static final NodeClass field named TYPE in Node subclasses.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Mon, 16 Feb 2015 15:43:03 +0100
parents c9bb0da795d4
children 61d3cb8e1280
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1 /*
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2 * Copyright (c) 2009, 2011, 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.java;
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24
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25 import com.oracle.graal.api.meta.*;
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26 import com.oracle.graal.compiler.common.type.*;
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27 import com.oracle.graal.graph.*;
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28 import com.oracle.graal.nodeinfo.*;
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29 import com.oracle.graal.nodes.*;
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30 import com.oracle.graal.nodes.spi.*;
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32 /**
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33 * The base class of all instructions that access fields.
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34 */
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35 @NodeInfo
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36 public abstract class AccessFieldNode extends FixedWithNextNode implements Lowerable {
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37
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38 public static final NodeClass TYPE = NodeClass.get(AccessFieldNode.class);
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39 @OptionalInput ValueNode object;
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40
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41 protected final ResolvedJavaField field;
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42
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43 public ValueNode object() {
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44 return object;
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45 }
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46
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47 /**
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48 * Constructs a new access field object.
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49 *
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50 * @param object the instruction producing the receiver object
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51 * @param field the compiler interface representation of the field
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52 */
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53 public AccessFieldNode(NodeClass c, Stamp stamp, ValueNode object, ResolvedJavaField field) {
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54 super(c, stamp);
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55 this.object = object;
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56 this.field = field;
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57 assert field.getDeclaringClass().isInitialized();
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58 }
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59
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60 /**
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61 * Gets the compiler interface field for this field access.
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62 *
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63 * @return the compiler interface field for this field access
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64 */
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65 public ResolvedJavaField field() {
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66 return field;
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67 }
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68
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69 /**
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70 * Checks whether this field access is an access to a static field.
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71 *
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72 * @return {@code true} if this field access is to a static field
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73 */
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74 public boolean isStatic() {
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75 return field.isStatic();
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76 }
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77
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78 /**
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79 * Checks whether this field is declared volatile.
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80 *
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81 * @return {@code true} if the field is resolved and declared volatile
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82 */
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83 public boolean isVolatile() {
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84 return field.isVolatile();
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85 }
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86
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87 @Override
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88 public void lower(LoweringTool tool) {
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89 tool.getLowerer().lower(this, tool);
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90 }
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91
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92 @Override
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93 public String toString(Verbosity verbosity) {
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94 if (verbosity == Verbosity.Name) {
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95 return super.toString(verbosity) + "#" + field.getName();
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96 } else {
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97 return super.toString(verbosity);
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98 }
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99 }
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100
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101 @Override
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102 public boolean verify() {
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103 assertTrue((object == null) == isStatic(), "static field must not have object, instance field must have object");
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104 return super.verify();
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105 }
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106 }