Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultVirtualFrame.java @ 11823:6440f50c1ea8
improved documentation and testing for ResolvedJavaType.resolveMethod() (GRAAL-489)
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 30 Sep 2013 09:47:32 +0200 |
parents | 269e6794e1ec |
children | 139b84d713bc |
rev | line source |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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1 /* |
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2 * Copyright (c) 2012, 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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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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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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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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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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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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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.impl; |
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26 |
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27 import java.util.*; |
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28 |
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29 import com.oracle.truffle.api.*; |
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30 import com.oracle.truffle.api.frame.*; |
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31 |
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32 public final class DefaultVirtualFrame implements VirtualFrame { |
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33 |
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34 private final FrameDescriptor descriptor; |
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35 private final PackedFrame caller; |
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36 private final Arguments arguments; |
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37 private Object[] locals; |
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38 private byte[] tags; |
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39 |
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40 public DefaultVirtualFrame(FrameDescriptor descriptor, PackedFrame caller, Arguments arguments) { |
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41 this.descriptor = descriptor; |
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42 this.caller = caller; |
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43 this.arguments = arguments; |
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44 this.locals = new Object[descriptor.getSize()]; |
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45 Arrays.fill(locals, descriptor.getTypeConversion().getDefaultValue()); |
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46 this.tags = new byte[descriptor.getSize()]; |
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47 } |
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48 |
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49 @SuppressWarnings("unchecked") |
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50 @Override |
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51 public <T extends Arguments> T getArguments(Class<T> clazz) { |
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52 return (T) arguments; |
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53 } |
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54 |
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55 @Override |
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56 public PackedFrame getCaller() { |
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57 return caller; |
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58 } |
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59 |
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60 @Override |
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61 public PackedFrame pack() { |
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62 return new DefaultPackedFrame(this); |
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63 } |
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64 |
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65 @Override |
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66 public MaterializedFrame materialize() { |
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67 return new DefaultMaterializedFrame(this); |
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68 } |
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69 |
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70 @Override |
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71 public Object getObject(FrameSlot slot) throws FrameSlotTypeException { |
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72 verifyGet(slot, FrameSlotKind.Object); |
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73 return locals[slot.getIndex()]; |
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74 } |
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75 |
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76 @Override |
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77 public void setObject(FrameSlot slot, Object value) { |
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78 verifySetObject(slot); |
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79 locals[slot.getIndex()] = value; |
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80 } |
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81 |
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82 @Override |
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83 public byte getByte(FrameSlot slot) throws FrameSlotTypeException { |
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84 verifyGet(slot, FrameSlotKind.Byte); |
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85 return (byte) locals[slot.getIndex()]; |
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86 } |
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87 |
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88 @Override |
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89 public void setByte(FrameSlot slot, byte value) throws FrameSlotTypeException { |
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90 verifySet(slot, FrameSlotKind.Byte); |
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91 locals[slot.getIndex()] = value; |
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92 } |
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93 |
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94 @Override |
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95 public boolean getBoolean(FrameSlot slot) throws FrameSlotTypeException { |
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96 verifyGet(slot, FrameSlotKind.Boolean); |
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97 return (boolean) locals[slot.getIndex()]; |
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98 } |
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99 |
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100 @Override |
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101 public void setBoolean(FrameSlot slot, boolean value) throws FrameSlotTypeException { |
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102 verifySet(slot, FrameSlotKind.Boolean); |
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103 locals[slot.getIndex()] = value; |
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104 } |
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105 |
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106 @Override |
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107 public int getInt(FrameSlot slot) throws FrameSlotTypeException { |
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108 verifyGet(slot, FrameSlotKind.Int); |
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109 return (int) locals[slot.getIndex()]; |
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110 } |
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111 |
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112 @Override |
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113 public void setInt(FrameSlot slot, int value) throws FrameSlotTypeException { |
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114 verifySet(slot, FrameSlotKind.Int); |
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115 locals[slot.getIndex()] = value; |
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116 } |
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117 |
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118 @Override |
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119 public long getLong(FrameSlot slot) throws FrameSlotTypeException { |
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120 verifyGet(slot, FrameSlotKind.Long); |
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121 return (long) locals[slot.getIndex()]; |
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122 } |
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123 |
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124 @Override |
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125 public void setLong(FrameSlot slot, long value) throws FrameSlotTypeException { |
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126 verifySet(slot, FrameSlotKind.Long); |
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127 locals[slot.getIndex()] = value; |
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128 } |
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129 |
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130 @Override |
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131 public float getFloat(FrameSlot slot) throws FrameSlotTypeException { |
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132 verifyGet(slot, FrameSlotKind.Float); |
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133 return (float) locals[slot.getIndex()]; |
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134 } |
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135 |
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136 @Override |
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137 public void setFloat(FrameSlot slot, float value) throws FrameSlotTypeException { |
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138 verifySet(slot, FrameSlotKind.Float); |
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139 locals[slot.getIndex()] = value; |
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140 } |
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141 |
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142 @Override |
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143 public double getDouble(FrameSlot slot) throws FrameSlotTypeException { |
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144 verifyGet(slot, FrameSlotKind.Double); |
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145 return (double) locals[slot.getIndex()]; |
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146 } |
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147 |
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148 @Override |
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149 public void setDouble(FrameSlot slot, double value) throws FrameSlotTypeException { |
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150 verifySet(slot, FrameSlotKind.Double); |
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151 locals[slot.getIndex()] = value; |
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152 } |
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153 |
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154 @Override |
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155 public FrameDescriptor getFrameDescriptor() { |
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156 return this.descriptor; |
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157 } |
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158 |
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159 @Override |
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160 public Object getValue(FrameSlot slot) { |
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161 int slotIndex = slot.getIndex(); |
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162 if (slotIndex >= tags.length) { |
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163 resize(); |
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164 } |
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165 return locals[slotIndex]; |
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166 } |
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167 |
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168 private void verifySet(FrameSlot slot, FrameSlotKind accessKind) throws FrameSlotTypeException { |
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169 FrameSlotKind slotKind = slot.getKind(); |
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170 if (slotKind != accessKind) { |
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171 if (slotKind == FrameSlotKind.Illegal) { |
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172 slot.setKind(accessKind); |
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173 } else { |
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174 throw new FrameSlotTypeException(); |
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175 } |
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176 } |
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177 int slotIndex = slot.getIndex(); |
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178 if (slotIndex >= tags.length) { |
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179 resize(); |
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180 } |
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181 tags[slotIndex] = (byte) accessKind.ordinal(); |
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182 } |
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183 |
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184 private void verifySetObject(FrameSlot slot) { |
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185 if (slot.getKind() != FrameSlotKind.Object) { |
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186 slot.setKind(FrameSlotKind.Object); |
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187 } |
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188 int slotIndex = slot.getIndex(); |
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189 if (slotIndex >= tags.length) { |
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190 resize(); |
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191 } |
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192 tags[slotIndex] = (byte) FrameSlotKind.Object.ordinal(); |
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193 } |
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194 |
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195 private void verifyGet(FrameSlot slot, FrameSlotKind accessKind) throws FrameSlotTypeException { |
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196 int slotIndex = slot.getIndex(); |
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197 if (slotIndex >= tags.length) { |
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198 resize(); |
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199 } |
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200 byte tag = tags[slotIndex]; |
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201 if (accessKind == FrameSlotKind.Object ? (tag & 0xfe) != 0 : tag != accessKind.ordinal()) { |
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202 if (slot.getKind() == accessKind || tag == 0) { |
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203 descriptor.getTypeConversion().updateFrameSlot(this, slot, getValue(slot)); |
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204 if (tags[slotIndex] == accessKind.ordinal()) { |
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205 return; |
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206 } |
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207 } |
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208 throw new FrameSlotTypeException(); |
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209 } |
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210 } |
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211 |
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212 private void resize() { |
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213 int oldSize = tags.length; |
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214 int newSize = descriptor.getSize(); |
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215 if (newSize > oldSize) { |
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216 locals = Arrays.copyOf(locals, newSize); |
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217 Arrays.fill(locals, oldSize, newSize, descriptor.getTypeConversion().getDefaultValue()); |
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218 tags = Arrays.copyOf(tags, newSize); |
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219 } |
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220 } |
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221 |
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222 @Override |
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223 public boolean isInitialized(FrameSlot slot) { |
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224 int slotIndex = slot.getIndex(); |
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225 if (slotIndex >= tags.length) { |
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226 resize(); |
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227 } |
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228 return tags[slotIndex] != 0; |
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229 } |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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230 } |