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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultVirtualFrame.java @ 13201:833f8e96d0a5

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Truffle: improved error mesage for accessing unknonw frame slots.
author Christian Humer <christian.humer@gmail.com>
date Fri, 22 Nov 2013 14:45:09 +0100
parents 856a9864ed93
children a12017c18d5d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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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.impl;
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27 import java.util.*;
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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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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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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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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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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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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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76 @Override
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77 public void setObject(FrameSlot slot, Object value) {
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78 verifySet(slot, FrameSlotKind.Object);
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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) {
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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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100 @Override
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101 public void setBoolean(FrameSlot slot, boolean value) {
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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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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) {
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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) {
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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) {
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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) {
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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 if (!resize()) {
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164 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
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165 }
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166 }
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167 return locals[slotIndex];
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168 }
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169
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170 private void verifySet(FrameSlot slot, FrameSlotKind accessKind) {
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171 int slotIndex = slot.getIndex();
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172 if (slotIndex >= tags.length) {
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173 if (!resize()) {
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174 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
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175 }
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176 }
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177 tags[slotIndex] = (byte) accessKind.ordinal();
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178 }
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179
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180 private void verifyGet(FrameSlot slot, FrameSlotKind accessKind) throws FrameSlotTypeException {
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181 int slotIndex = slot.getIndex();
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182 if (slotIndex >= tags.length) {
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183 if (!resize()) {
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184 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
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185 }
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186 }
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187 byte tag = tags[slotIndex];
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188 if (accessKind == FrameSlotKind.Object ? tag != 0 : tag != accessKind.ordinal()) {
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189 if (slot.getKind() == accessKind || tag == 0) {
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190 descriptor.getTypeConversion().updateFrameSlot(this, slot, getValue(slot));
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191 if (tags[slotIndex] == accessKind.ordinal()) {
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192 return;
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193 }
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194 }
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195 throw new FrameSlotTypeException();
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196 }
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197 }
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198
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199 private boolean resize() {
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200 int oldSize = tags.length;
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201 int newSize = descriptor.getSize();
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202 if (newSize > oldSize) {
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203 locals = Arrays.copyOf(locals, newSize);
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204 Arrays.fill(locals, oldSize, newSize, descriptor.getTypeConversion().getDefaultValue());
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205 tags = Arrays.copyOf(tags, newSize);
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206 return true;
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207 }
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208 return false;
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209 }
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210
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211 private byte getTag(FrameSlot slot) {
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212 int slotIndex = slot.getIndex();
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213 if (slotIndex >= tags.length) {
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214 if (!resize()) {
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215 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
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216 }
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217 }
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218 return tags[slotIndex];
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219 }
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220
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221 @Override
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222 public boolean isObject(FrameSlot slot) {
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223 return getTag(slot) == FrameSlotKind.Object.ordinal();
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224 }
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225
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226 @Override
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227 public boolean isByte(FrameSlot slot) {
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228 return getTag(slot) == FrameSlotKind.Byte.ordinal();
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229 }
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230
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231 @Override
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232 public boolean isBoolean(FrameSlot slot) {
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233 return getTag(slot) == FrameSlotKind.Boolean.ordinal();
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234 }
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235
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236 @Override
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237 public boolean isInt(FrameSlot slot) {
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238 return getTag(slot) == FrameSlotKind.Int.ordinal();
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239 }
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240
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241 @Override
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242 public boolean isLong(FrameSlot slot) {
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243 return getTag(slot) == FrameSlotKind.Long.ordinal();
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244 }
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245
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246 @Override
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247 public boolean isFloat(FrameSlot slot) {
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248 return getTag(slot) == FrameSlotKind.Float.ordinal();
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249 }
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250
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251 @Override
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252 public boolean isDouble(FrameSlot slot) {
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253 return getTag(slot) == FrameSlotKind.Double.ordinal();
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254 }
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a4b84ba6dc2e 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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
255 }