Mercurial > hg > truffle
annotate graal/com.oracle.truffle.api.dsl/src/com/oracle/truffle/api/dsl/internal/SpecializationNode.java @ 18761:a665483c3881
Truffle-DSL: new node layout implementation.
author | Christian Humer <christian.humer@gmail.com> |
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date | Mon, 29 Dec 2014 23:38:54 +0100 |
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children | a720bf2e2f43 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2014, 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. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 package com.oracle.truffle.api.dsl.internal; |
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26 |
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27 import java.lang.reflect.*; |
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28 import java.util.concurrent.*; |
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29 |
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30 import com.oracle.truffle.api.*; |
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31 import com.oracle.truffle.api.dsl.*; |
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32 import com.oracle.truffle.api.dsl.internal.RewriteEvent.RewriteEvent0; |
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33 import com.oracle.truffle.api.dsl.internal.RewriteEvent.RewriteEvent1; |
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34 import com.oracle.truffle.api.dsl.internal.RewriteEvent.RewriteEvent2; |
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35 import com.oracle.truffle.api.dsl.internal.RewriteEvent.RewriteEvent3; |
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36 import com.oracle.truffle.api.dsl.internal.RewriteEvent.RewriteEvent4; |
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37 import com.oracle.truffle.api.dsl.internal.RewriteEvent.RewriteEventN; |
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38 import com.oracle.truffle.api.frame.*; |
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39 import com.oracle.truffle.api.nodes.*; |
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40 import com.oracle.truffle.api.nodes.NodeUtil.NodeClass; |
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41 import com.oracle.truffle.api.nodes.NodeUtil.NodeField; |
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42 |
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43 /** |
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44 * Internal implementation dependent base class for generated specialized nodes. |
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45 */ |
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46 @SuppressWarnings("unused") |
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47 @NodeInfo(cost = NodeCost.NONE) |
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48 public abstract class SpecializationNode extends Node { |
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49 |
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50 @Child protected SpecializationNode next; |
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51 |
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52 private final int index; |
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53 |
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54 public SpecializationNode() { |
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55 this(-1); |
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56 } |
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57 |
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58 public SpecializationNode(int index) { |
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59 this.index = index; |
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60 } |
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61 |
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62 @Override |
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63 public final NodeCost getCost() { |
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64 return NodeCost.NONE; |
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65 } |
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66 |
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67 public static Node updateRoot(Node node) { |
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68 updateRootImpl(((SpecializedNode) node).getSpecializationNode(), node); |
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69 return node; |
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70 } |
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71 |
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72 private static void updateRootImpl(SpecializationNode start, Node node) { |
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73 NodeField[] fields = NodeClass.get(start.getClass()).getFields(); |
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74 for (int i = fields.length - 1; i >= 0; i--) { |
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75 NodeField f = fields[i]; |
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76 if (f.getName().equals("root")) { |
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77 f.putObject(start, node); |
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78 break; |
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79 } |
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80 } |
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81 if (start.next != null) { |
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82 updateRootImpl(start.next, node); |
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83 } |
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84 } |
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85 |
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86 protected final SpecializationNode polymorphicMerge(SpecializationNode newNode) { |
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87 SpecializationNode merged = next.merge(newNode); |
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88 if (merged == newNode && !isSame(newNode) && count() <= 2) { |
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89 return removeSame(new RewriteEvent0(findParentNode(), "merged polymorphic to monomorphic")); |
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90 } |
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91 return merged; |
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92 } |
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93 |
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94 public final NodeCost getNodeCost() { |
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95 switch (count()) { |
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96 case 0: |
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97 case 1: |
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98 return NodeCost.UNINITIALIZED; |
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99 case 2: |
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100 return NodeCost.MONOMORPHIC; |
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101 default: |
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102 return NodeCost.POLYMORPHIC; |
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103 } |
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104 } |
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105 |
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106 protected abstract Node[] getSuppliedChildren(); |
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107 |
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108 protected SpecializationNode merge(SpecializationNode newNode) { |
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109 if (this.isSame(newNode)) { |
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110 return this; |
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111 } |
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112 return next != null ? next.merge(newNode) : newNode; |
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113 } |
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114 |
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115 @Override |
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116 public final boolean equals(Object obj) { |
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117 if (obj instanceof SpecializationNode) { |
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118 return ((SpecializationNode) obj).isSame(this); |
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119 } |
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120 return super.equals(obj); |
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121 } |
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122 |
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123 @Override |
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124 public final int hashCode() { |
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125 return index; |
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126 } |
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127 |
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128 protected boolean isSame(SpecializationNode other) { |
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129 return getClass() == other.getClass(); |
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130 } |
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131 |
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132 private final int count() { |
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133 return next != null ? next.count() + 1 : 1; |
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134 } |
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135 |
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136 protected final SpecializationNode removeSame(final CharSequence reason) { |
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137 return atomic(new Callable<SpecializationNode>() { |
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138 public SpecializationNode call() throws Exception { |
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139 return removeImpl(SpecializationNode.this, reason); |
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140 } |
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141 }); |
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142 } |
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143 |
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144 /** Find the topmost of the specialization chain. */ |
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145 private final SpecializationNode findStart() { |
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146 SpecializationNode node = this; |
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147 Node parent = this.getParent(); |
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148 while (parent instanceof SpecializationNode) { |
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149 SpecializationNode parentCast = ((SpecializationNode) parent); |
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150 if (parentCast.next != node) { |
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151 break; |
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152 } |
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153 node = parentCast; |
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154 parent = node.getParent(); |
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155 } |
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156 return node; |
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157 } |
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158 |
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159 private final Node findParentNode() { |
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160 return findStart().getParent(); |
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161 } |
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162 |
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163 private SpecializationNode removeImpl(SpecializationNode toRemove, CharSequence reason) { |
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164 SpecializationNode start = findStart(); |
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165 SpecializationNode current = start; |
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166 while (current != null) { |
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167 if (current.isSame(toRemove)) { |
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168 current.replace(current.next, reason); |
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169 if (current == start) { |
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170 start = start.next; |
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171 } |
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172 } |
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173 current = current.next; |
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174 } |
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175 return start; |
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176 } |
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177 |
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178 public Object acceptAndExecute(VirtualFrame frame) { |
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179 throw new UnsupportedOperationException(); |
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180 } |
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181 |
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182 public Object acceptAndExecute(VirtualFrame frame, Object o1) { |
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183 throw new UnsupportedOperationException(); |
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184 } |
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185 |
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186 public Object acceptAndExecute(VirtualFrame frame, Object o1, Object o2) { |
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187 throw new UnsupportedOperationException(); |
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188 } |
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189 |
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190 public Object acceptAndExecute(VirtualFrame frame, Object o1, Object o2, Object o3) { |
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191 throw new UnsupportedOperationException(); |
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192 } |
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193 |
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194 public Object acceptAndExecute(VirtualFrame frame, Object o1, Object o2, Object o3, Object o4) { |
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195 throw new UnsupportedOperationException(); |
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196 } |
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197 |
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198 public Object acceptAndExecute(VirtualFrame frame, Object... args) { |
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199 throw new UnsupportedOperationException(); |
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200 } |
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201 |
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202 protected SpecializationNode createFallback() { |
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203 return null; |
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204 } |
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205 |
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206 protected SpecializationNode createPolymorphic() { |
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207 return null; |
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208 } |
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209 |
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210 protected SpecializationNode createNext(VirtualFrame frame) { |
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211 throw new UnsupportedOperationException(); |
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212 } |
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213 |
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214 protected SpecializationNode createNext(VirtualFrame frame, Object o1) { |
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215 throw new UnsupportedOperationException(); |
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216 } |
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217 |
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218 protected SpecializationNode createNext(VirtualFrame frame, Object o1, Object o2) { |
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219 throw new UnsupportedOperationException(); |
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220 } |
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221 |
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222 protected SpecializationNode createNext(VirtualFrame frame, Object o1, Object o2, Object o3) { |
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223 throw new UnsupportedOperationException(); |
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224 } |
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225 |
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226 protected SpecializationNode createNext(VirtualFrame frame, Object o1, Object o2, Object o3, Object o4) { |
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227 throw new UnsupportedOperationException(); |
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228 } |
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229 |
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230 protected SpecializationNode createNext(VirtualFrame frame, Object... args) { |
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231 throw new UnsupportedOperationException(); |
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232 } |
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233 |
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234 protected final Object uninitialized(VirtualFrame frame) { |
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235 CompilerDirectives.transferToInterpreterAndInvalidate(); |
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236 SpecializationNode nextSpecialization = createNext(frame); |
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237 if (nextSpecialization == null) { |
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238 nextSpecialization = createFallback(); |
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239 } |
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240 if (nextSpecialization == null) { |
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241 return unsupported(frame); |
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242 } |
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243 return insertSpecialization(nextSpecialization, new RewriteEvent0(findParentNode(), "inserted new specialization")).acceptAndExecute(frame); |
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244 } |
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245 |
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246 protected final Object uninitialized(VirtualFrame frame, Object o1) { |
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247 CompilerDirectives.transferToInterpreterAndInvalidate(); |
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248 SpecializationNode nextSpecialization = createNext(frame, o1); |
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249 if (nextSpecialization == null) { |
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250 nextSpecialization = createFallback(); |
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251 } |
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252 if (nextSpecialization == null) { |
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253 return unsupported(frame, o1); |
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254 } |
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255 return insertSpecialization(nextSpecialization, new RewriteEvent1(findParentNode(), "inserted new specialization", o1)).acceptAndExecute(frame, o1); |
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256 } |
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257 |
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258 protected final Object uninitialized(VirtualFrame frame, Object o1, Object o2) { |
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259 CompilerDirectives.transferToInterpreterAndInvalidate(); |
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260 SpecializationNode nextSpecialization = createNext(frame, o1, o2); |
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261 if (nextSpecialization == null) { |
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262 nextSpecialization = createFallback(); |
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263 } |
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264 if (nextSpecialization == null) { |
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265 return unsupported(frame, o1, o2); |
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266 } |
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267 return insertSpecialization(nextSpecialization, new RewriteEvent2(findParentNode(), "inserted new specialization", o1, o2)).acceptAndExecute(frame, o1, o2); |
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268 } |
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269 |
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270 protected final Object uninitialized(VirtualFrame frame, Object o1, Object o2, Object o3) { |
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271 CompilerDirectives.transferToInterpreterAndInvalidate(); |
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272 SpecializationNode nextSpecialization = createNext(frame, o1, o2, o3); |
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273 if (nextSpecialization == null) { |
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274 nextSpecialization = createFallback(); |
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275 } |
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276 if (nextSpecialization == null) { |
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277 return unsupported(frame, o1, o2, o3); |
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278 } |
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279 return insertSpecialization(nextSpecialization, new RewriteEvent3(findParentNode(), "inserted new specialization", o1, o2, o3)).acceptAndExecute(frame, o1, o2, o3); |
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280 } |
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281 |
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282 protected final Object uninitialized(VirtualFrame frame, Object o1, Object o2, Object o3, Object o4) { |
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283 CompilerDirectives.transferToInterpreterAndInvalidate(); |
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284 SpecializationNode nextSpecialization = createNext(frame, o1, o2, o3, o4); |
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285 if (nextSpecialization == null) { |
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286 nextSpecialization = createFallback(); |
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287 } |
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288 if (nextSpecialization == null) { |
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289 return unsupported(frame, o1, o2, o3, o4); |
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290 } |
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291 return insertSpecialization(nextSpecialization, new RewriteEvent4(findParentNode(), "inserts new specialization", o1, o2, o3, o4)).acceptAndExecute(frame, o1, o2, o3, o4); |
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292 } |
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293 |
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294 protected final Object uninitialized(VirtualFrame frame, Object... args) { |
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295 CompilerDirectives.transferToInterpreterAndInvalidate(); |
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296 SpecializationNode nextSpecialization = createNext(frame, args); |
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297 if (nextSpecialization == null) { |
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298 nextSpecialization = createFallback(); |
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299 } |
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300 if (nextSpecialization == null) { |
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301 unsupported(frame, args); |
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302 } |
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303 return insertSpecialization(nextSpecialization, new RewriteEventN(findParentNode(), "inserts new specialization", args)).acceptAndExecute(frame, args); |
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304 } |
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305 |
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306 private boolean needsPolymorphic() { |
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307 return findStart().count() == 2; |
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308 } |
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309 |
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310 protected final Object remove(String reason, VirtualFrame frame) { |
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311 return removeSame(new RewriteEvent0(findParentNode(), reason)).acceptAndExecute(frame); |
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312 } |
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313 |
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314 protected final Object remove(String reason, VirtualFrame frame, Object o1) { |
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315 return removeSame(new RewriteEvent1(findParentNode(), reason, o1)).acceptAndExecute(frame, o1); |
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316 } |
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317 |
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318 protected final Object remove(String reason, VirtualFrame frame, Object o1, Object o2) { |
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319 return removeSame(new RewriteEvent2(findParentNode(), reason, o1, o2)).acceptAndExecute(frame, o1, o2); |
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320 } |
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321 |
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322 protected final Object remove(String reason, VirtualFrame frame, Object o1, Object o2, Object o3) { |
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323 return removeSame(new RewriteEvent3(findParentNode(), reason, o1, o2, o3)).acceptAndExecute(frame, o1, o2, o3); |
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324 } |
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325 |
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326 protected final Object remove(String reason, VirtualFrame frame, Object o1, Object o2, Object o3, Object o4) { |
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327 return removeSame(new RewriteEvent4(findParentNode(), reason, o1, o2, o3, o4)).acceptAndExecute(frame, o1, o2, o3, o4); |
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328 } |
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329 |
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330 protected final Object remove(String reason, VirtualFrame frame, Object... args) { |
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331 return removeSame(new RewriteEventN(findParentNode(), reason, args)).acceptAndExecute(frame, args); |
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332 } |
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333 |
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334 protected Object unsupported(VirtualFrame frame) { |
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335 throw new UnsupportedSpecializationException(findParentNode(), getSuppliedChildren()); |
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336 } |
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337 |
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338 protected Object unsupported(VirtualFrame frame, Object o1) { |
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339 throw new UnsupportedSpecializationException(findParentNode(), getSuppliedChildren(), o1); |
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340 } |
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341 |
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342 protected Object unsupported(VirtualFrame frame, Object o1, Object o2) { |
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343 throw new UnsupportedSpecializationException(findParentNode(), getSuppliedChildren(), o1, o2); |
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344 } |
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345 |
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346 protected Object unsupported(VirtualFrame frame, Object o1, Object o2, Object o3) { |
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347 throw new UnsupportedSpecializationException(findParentNode(), getSuppliedChildren(), o1, o2, o3); |
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348 } |
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349 |
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350 protected Object unsupported(VirtualFrame frame, Object o1, Object o2, Object o3, Object o4) { |
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351 throw new UnsupportedSpecializationException(findParentNode(), getSuppliedChildren(), o1, o2, o3, o4); |
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352 } |
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353 |
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354 protected Object unsupported(VirtualFrame frame, Object... args) { |
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355 throw new UnsupportedSpecializationException(findParentNode(), getSuppliedChildren(), args); |
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356 } |
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357 |
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358 private SpecializationNode insertSpecialization(final SpecializationNode generated, final CharSequence message) { |
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359 return atomic(new Callable<SpecializationNode>() { |
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360 public SpecializationNode call() { |
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361 return insert(generated, message); |
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362 } |
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363 }); |
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364 } |
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365 |
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366 private final SpecializationNode insert(final SpecializationNode generated, CharSequence message) { |
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367 SpecializationNode start = findStart(); |
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368 if (start == this) { |
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369 // fast path for first insert |
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370 return insertBefore(this, generated, message); |
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371 } else { |
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372 return slowSortedInsert(start, generated, message); |
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373 } |
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374 } |
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375 |
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376 private static <T> SpecializationNode slowSortedInsert(SpecializationNode start, final SpecializationNode generated, final CharSequence message) { |
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377 final SpecializationNode merged = start.merge(generated); |
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378 if (merged == generated) { |
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379 // new node |
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380 if (start.count() == 2) { |
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381 insertBefore(start, start.createPolymorphic(), "insert polymorphic"); |
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382 } |
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383 SpecializationNode insertBefore = findInsertBeforeNode(generated.index, start); |
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384 return insertBefore(insertBefore, generated, message); |
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385 } else { |
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386 // existing node |
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387 merged.replace(merged, new RewriteEvent0(merged.findParentNode(), "merged specialization")); |
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388 return merged; |
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389 } |
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390 } |
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391 |
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392 private static SpecializationNode findInsertBeforeNode(int generatedIndex, SpecializationNode start) { |
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393 SpecializationNode current = start; |
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394 while (current != null && current.index < generatedIndex) { |
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395 current = current.next; |
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396 } |
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397 return current; |
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398 } |
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399 |
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400 private static <T> SpecializationNode insertBefore(SpecializationNode node, SpecializationNode insertBefore, CharSequence message) { |
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401 insertBefore.next = node; |
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402 return node.replace(insertBefore, message); |
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403 } |
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404 |
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405 @Override |
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406 public final String toString() { |
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407 Class<?> clazz = getClass(); |
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408 StringBuilder b = new StringBuilder(); |
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409 b.append(clazz.getSimpleName()); |
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410 |
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411 appendFields(b, clazz); |
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412 if (next != null) { |
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413 b.append(" -> ").append(next.toString()); |
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414 } |
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415 return b.toString(); |
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416 } |
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417 |
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418 private void appendFields(StringBuilder b, Class<?> clazz) { |
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419 Field[] fields = clazz.getDeclaredFields(); |
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420 if (fields.length == 0) { |
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421 return; |
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422 } |
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423 b.append("("); |
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424 for (Field field : fields) { |
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425 if (Modifier.isStatic(field.getModifiers())) { |
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426 continue; |
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427 } |
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428 String name = field.getName(); |
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429 if (name.equals("root")) { |
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430 continue; |
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431 } |
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432 b.append(field.getName()); |
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433 try { |
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434 field.setAccessible(true); |
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435 b.append(field.get(this)); |
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436 } catch (IllegalArgumentException e) { |
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437 b.append(e.toString()); |
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438 } catch (IllegalAccessException e) { |
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439 b.append(e.toString()); |
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440 } |
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441 } |
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442 b.append(")"); |
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443 } |
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444 |
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445 } |