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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/frame/Frame.java @ 21972:ff6f34159b8a

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Providing package-info for most of API packages. Feel free to provide your package-info.java for anything that has API in its name.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Tue, 23 Jun 2015 12:44:41 +0200
parents 9c8c0937da41
children
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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.frame;
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27 /**
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28 * Represents a frame containing values of local variables of the guest language. Instances of this
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29 * type must not be stored in a field or cast to {@link java.lang.Object}.
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30 */
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31 public interface Frame {
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32
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33 /**
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34 * @return the object describing the layout of this frame
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35 */
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36 FrameDescriptor getFrameDescriptor();
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37
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38 /**
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39 * Retrieves the arguments object from this frame. The runtime assumes that the arguments object
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40 * is never null.
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41 *
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42 * @return the arguments used when calling this method
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43 */
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44 Object[] getArguments();
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46 /**
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47 * Read access to a local variable of type {@link Object}.
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48 *
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49 * @param slot the slot of the local variable
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50 * @return the current value of the local variable
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51 */
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52 Object getObject(FrameSlot slot) throws FrameSlotTypeException;
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54 /**
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55 * Write access to a local variable of type {@link Object}.
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56 *
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57 * @param slot the slot of the local variable
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58 * @param value the new value of the local variable
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59 */
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60 void setObject(FrameSlot slot, Object value);
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62 /**
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63 * Read access to a local variable of type byte.
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64 *
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65 * @param slot the slot of the local variable
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66 * @return the current value of the local variable
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67 * @throws FrameSlotTypeException
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68 */
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69 byte getByte(FrameSlot slot) throws FrameSlotTypeException;
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71 /**
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72 * Write access to a local variable of type byte.
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73 *
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74 * @param slot the slot of the local variable
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75 * @param value the new value of the local variable
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76 */
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77
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78 void setByte(FrameSlot slot, byte value);
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80 /**
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81 * Read access to a local variable of type boolean.
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82 *
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83 * @param slot the slot of the local variable
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84 * @return the current value of the local variable
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85 */
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86 boolean getBoolean(FrameSlot slot) throws FrameSlotTypeException;
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88 /**
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89 * Write access to a local variable of type boolean.
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90 *
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91 * @param slot the slot of the local variable
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92 * @param value the new value of the local variable
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93 */
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94 void setBoolean(FrameSlot slot, boolean value);
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95
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96 /**
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97 * Read access to a local variable of type int.
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98 *
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99 * @param slot the slot of the local variable
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100 * @return the current value of the local variable
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101 */
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102 int getInt(FrameSlot slot) throws FrameSlotTypeException;
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103
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104 /**
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105 * Write access to a local variable of type int.
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106 *
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107 * @param slot the slot of the local variable
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108 * @param value the new value of the local variable
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109 */
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110 void setInt(FrameSlot slot, int value);
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111
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112 /**
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113 * Read access to a local variable of type long.
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114 *
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115 * @param slot the slot of the local variable
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116 * @return the current value of the local variable
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117 */
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118 long getLong(FrameSlot slot) throws FrameSlotTypeException;
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119
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120 /**
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121 * Write access to a local variable of type long.
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122 *
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123 * @param slot the slot of the local variable
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124 * @param value the new value of the local variable
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125 */
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126 void setLong(FrameSlot slot, long value);
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127
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128 /**
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129 * Read access to a local variable of type float.
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130 *
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131 * @param slot the slot of the local variable
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132 * @return the current value of the local variable
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133 */
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134 float getFloat(FrameSlot slot) throws FrameSlotTypeException;
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135
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136 /**
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137 * Write access to a local variable of type float.
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138 *
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139 * @param slot the slot of the local variable
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140 * @param value the new value of the local variable
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141 */
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142 void setFloat(FrameSlot slot, float value);
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143
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144 /**
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145 * Read access to a local variable of type double.
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146 *
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147 * @param slot the slot of the local variable
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148 * @return the current value of the local variable
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149 */
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150 double getDouble(FrameSlot slot) throws FrameSlotTypeException;
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151
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152 /**
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153 * Write access to a local variable of type double.
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154 *
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155 * @param slot the slot of the local variable
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156 * @param value the new value of the local variable
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157 */
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158 void setDouble(FrameSlot slot, double value);
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159
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160 /**
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161 * Read access to a local variable of any type.
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162 *
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163 * @param slot the slot of the local variable
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164 * @return the current value of the local variable or defaultValue if unset
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165 */
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166 Object getValue(FrameSlot slot);
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167
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168 /**
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169 * Materializes this frame, which allows it to be stored in a field or cast to
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170 * {@link java.lang.Object}.
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171 *
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172 * @return the new materialized frame
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173 */
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174 MaterializedFrame materialize();
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175
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176 /**
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177 * Check whether the given {@link FrameSlot} is of type object.
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178 */
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179 boolean isObject(FrameSlot slot);
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180
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181 /**
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182 * Check whether the given {@link FrameSlot} is of type byte.
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183 */
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184 boolean isByte(FrameSlot slot);
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185
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186 /**
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187 * Check whether the given {@link FrameSlot} is of type boolean.
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188 */
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189 boolean isBoolean(FrameSlot slot);
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190
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191 /**
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192 * Check whether the given {@link FrameSlot} is of type int.
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5d91b0b67cba Introduce Frame.isInitialized in the Truffle API.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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193 */
12643
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194 boolean isInt(FrameSlot slot);
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195
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196 /**
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197 * Check whether the given {@link FrameSlot} is of type long.
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198 */
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199 boolean isLong(FrameSlot slot);
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200
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201 /**
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202 * Check whether the given {@link FrameSlot} is of type float.
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203 */
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204 boolean isFloat(FrameSlot slot);
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205
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206 /**
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207 * Check whether the given {@link FrameSlot} is of type double.
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208 */
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209 boolean isDouble(FrameSlot slot);
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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:
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210 }