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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultVirtualFrame.java @ 13760:a12017c18d5d

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Truffle API cleanup: Reduce the visibility of classes and constructors that are not intended to be instantiated by guest language implementations; provide abstract class RootCallTarget as a CallTarget to a RootNode
author Christian Wimmer <christian.wimmer@oracle.com>
date Fri, 24 Jan 2014 18:13:38 -0800
parents 833f8e96d0a5
children 64dcb92ee75a
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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 /**
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33 * This is an implementation-specific class. Do not use or instantiate it. Instead, use
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34 * {@link TruffleRuntime#createVirtualFrame(PackedFrame, Arguments, FrameDescriptor)} to create a
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35 * {@link VirtualFrame}.
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36 */
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37 final class DefaultVirtualFrame implements VirtualFrame {
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39 private final FrameDescriptor descriptor;
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40 private final PackedFrame caller;
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41 private final Arguments arguments;
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42 private Object[] locals;
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43 private byte[] tags;
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44
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45 DefaultVirtualFrame(FrameDescriptor descriptor, PackedFrame caller, Arguments arguments) {
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46 this.descriptor = descriptor;
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47 this.caller = caller;
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48 this.arguments = arguments;
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49 this.locals = new Object[descriptor.getSize()];
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50 Arrays.fill(locals, descriptor.getTypeConversion().getDefaultValue());
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51 this.tags = new byte[descriptor.getSize()];
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52 }
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53
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54 @SuppressWarnings("unchecked")
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55 @Override
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56 public <T extends Arguments> T getArguments(Class<T> clazz) {
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57 return (T) arguments;
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58 }
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60 @Override
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61 public PackedFrame getCaller() {
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62 return caller;
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63 }
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65 @Override
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66 public PackedFrame pack() {
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67 return new DefaultPackedFrame(this);
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68 }
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70 @Override
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71 public MaterializedFrame materialize() {
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72 return new DefaultMaterializedFrame(this);
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73 }
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75 @Override
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76 public Object getObject(FrameSlot slot) throws FrameSlotTypeException {
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77 verifyGet(slot, FrameSlotKind.Object);
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78 return locals[slot.getIndex()];
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79 }
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80
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81 @Override
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82 public void setObject(FrameSlot slot, Object value) {
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83 verifySet(slot, FrameSlotKind.Object);
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84 locals[slot.getIndex()] = value;
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85 }
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87 @Override
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88 public byte getByte(FrameSlot slot) throws FrameSlotTypeException {
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89 verifyGet(slot, FrameSlotKind.Byte);
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90 return (byte) locals[slot.getIndex()];
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91 }
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92
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93 @Override
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94 public void setByte(FrameSlot slot, byte value) {
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95 verifySet(slot, FrameSlotKind.Byte);
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96 locals[slot.getIndex()] = value;
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97 }
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98
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99 @Override
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100 public boolean getBoolean(FrameSlot slot) throws FrameSlotTypeException {
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101 verifyGet(slot, FrameSlotKind.Boolean);
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102 return (boolean) locals[slot.getIndex()];
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103 }
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105 @Override
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106 public void setBoolean(FrameSlot slot, boolean value) {
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107 verifySet(slot, FrameSlotKind.Boolean);
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108 locals[slot.getIndex()] = value;
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109 }
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111 @Override
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112 public int getInt(FrameSlot slot) throws FrameSlotTypeException {
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113 verifyGet(slot, FrameSlotKind.Int);
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114 return (int) locals[slot.getIndex()];
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115 }
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117 @Override
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118 public void setInt(FrameSlot slot, int value) {
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119 verifySet(slot, FrameSlotKind.Int);
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120 locals[slot.getIndex()] = value;
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121 }
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122
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123 @Override
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124 public long getLong(FrameSlot slot) throws FrameSlotTypeException {
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125 verifyGet(slot, FrameSlotKind.Long);
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126 return (long) locals[slot.getIndex()];
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127 }
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128
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129 @Override
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130 public void setLong(FrameSlot slot, long value) {
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131 verifySet(slot, FrameSlotKind.Long);
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132 locals[slot.getIndex()] = value;
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133 }
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134
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135 @Override
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136 public float getFloat(FrameSlot slot) throws FrameSlotTypeException {
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137 verifyGet(slot, FrameSlotKind.Float);
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138 return (float) locals[slot.getIndex()];
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139 }
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140
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141 @Override
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142 public void setFloat(FrameSlot slot, float value) {
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143 verifySet(slot, FrameSlotKind.Float);
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144 locals[slot.getIndex()] = value;
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145 }
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146
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147 @Override
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148 public double getDouble(FrameSlot slot) throws FrameSlotTypeException {
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149 verifyGet(slot, FrameSlotKind.Double);
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150 return (double) locals[slot.getIndex()];
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151 }
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152
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153 @Override
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154 public void setDouble(FrameSlot slot, double value) {
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155 verifySet(slot, FrameSlotKind.Double);
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156 locals[slot.getIndex()] = value;
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157 }
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158
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159 @Override
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160 public FrameDescriptor getFrameDescriptor() {
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161 return this.descriptor;
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162 }
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163
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164 @Override
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165 public Object getValue(FrameSlot slot) {
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166 int slotIndex = slot.getIndex();
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167 if (slotIndex >= tags.length) {
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168 if (!resize()) {
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169 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
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170 }
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171 }
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172 return locals[slotIndex];
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173 }
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174
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175 private void verifySet(FrameSlot slot, FrameSlotKind accessKind) {
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176 int slotIndex = slot.getIndex();
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177 if (slotIndex >= tags.length) {
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178 if (!resize()) {
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179 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
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180 }
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181 }
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182 tags[slotIndex] = (byte) accessKind.ordinal();
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183 }
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184
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185 private void verifyGet(FrameSlot slot, FrameSlotKind accessKind) throws FrameSlotTypeException {
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186 int slotIndex = slot.getIndex();
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187 if (slotIndex >= tags.length) {
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188 if (!resize()) {
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189 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
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190 }
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191 }
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192 byte tag = tags[slotIndex];
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193 if (accessKind == FrameSlotKind.Object ? tag != 0 : tag != accessKind.ordinal()) {
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194 if (slot.getKind() == accessKind || tag == 0) {
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195 descriptor.getTypeConversion().updateFrameSlot(this, slot, getValue(slot));
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196 if (tags[slotIndex] == accessKind.ordinal()) {
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197 return;
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198 }
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199 }
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200 throw new FrameSlotTypeException();
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201 }
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202 }
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203
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204 private boolean resize() {
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205 int oldSize = tags.length;
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206 int newSize = descriptor.getSize();
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207 if (newSize > oldSize) {
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208 locals = Arrays.copyOf(locals, newSize);
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209 Arrays.fill(locals, oldSize, newSize, descriptor.getTypeConversion().getDefaultValue());
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210 tags = Arrays.copyOf(tags, newSize);
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211 return true;
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212 }
13201
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213 return false;
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214 }
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215
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216 private byte getTag(FrameSlot slot) {
11638
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217 int slotIndex = slot.getIndex();
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218 if (slotIndex >= tags.length) {
13201
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219 if (!resize()) {
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diff changeset
220 throw new IllegalArgumentException(String.format("The frame slot '%s' is not known by the frame descriptor.", slot));
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221 }
10911
3c398866d634 Frame.isInitialized: add method substitution and suppress AIOOBE if frame size < descriptor size.
Andreas Woess <andreas.woess@jku.at>
parents: 10680
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222 }
12643
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223 return tags[slotIndex];
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224 }
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225
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226 @Override
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227 public boolean isObject(FrameSlot slot) {
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228 return getTag(slot) == FrameSlotKind.Object.ordinal();
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229 }
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230
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231 @Override
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232 public boolean isByte(FrameSlot slot) {
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233 return getTag(slot) == FrameSlotKind.Byte.ordinal();
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234 }
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235
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diff changeset
236 @Override
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237 public boolean isBoolean(FrameSlot slot) {
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238 return getTag(slot) == FrameSlotKind.Boolean.ordinal();
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239 }
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240
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diff changeset
241 @Override
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242 public boolean isInt(FrameSlot slot) {
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parents: 12405
diff changeset
243 return getTag(slot) == FrameSlotKind.Int.ordinal();
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244 }
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245
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diff changeset
246 @Override
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247 public boolean isLong(FrameSlot slot) {
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248 return getTag(slot) == FrameSlotKind.Long.ordinal();
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249 }
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250
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parents: 12405
diff changeset
251 @Override
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Andreas Woess <andreas.woess@jku.at>
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252 public boolean isFloat(FrameSlot slot) {
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diff changeset
253 return getTag(slot) == FrameSlotKind.Float.ordinal();
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Andreas Woess <andreas.woess@jku.at>
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diff changeset
254 }
856a9864ed93 Frame: add is<Type> methods.
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parents: 12405
diff changeset
255
856a9864ed93 Frame: add is<Type> methods.
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parents: 12405
diff changeset
256 @Override
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Andreas Woess <andreas.woess@jku.at>
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257 public boolean isDouble(FrameSlot slot) {
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Andreas Woess <andreas.woess@jku.at>
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diff changeset
258 return getTag(slot) == FrameSlotKind.Double.ordinal();
9952
5d91b0b67cba Introduce Frame.isInitialized in the Truffle API.
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parents: 9330
diff changeset
259 }
7267
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
260 }