Mercurial > hg > graal-compiler
annotate graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/Kind.java @ 6328:6e66d97a16ae
Clean up Kind class.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 07 Sep 2012 12:12:47 +0200 |
parents | 7ac010ae8c97 |
children | 8f820c815cc2 |
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1 /* |
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2 * Copyright (c) 2009, 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. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.oracle.graal.api.meta; |
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24 |
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25 import java.lang.reflect.*; |
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26 |
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27 import sun.misc.*; |
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28 |
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29 /** |
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30 * Denotes the basic kinds of types in CRI, including the all the Java primitive types, for example, {@link Kind#Int} |
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31 * for {@code int} and {@link Kind#Object} for all object types. A kind has a single character short name, a Java name, |
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32 * and a set of flags further describing its behavior. |
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33 */ |
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34 public enum Kind { |
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35 /** The primitive boolean kind, represented as an int on the stack. */ |
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36 Boolean('z', "boolean", true, true), |
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37 |
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38 /** The primitive byte kind, represented as an int on the stack. */ |
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39 Byte('b', "byte", true, true), |
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40 |
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41 /** The primitive short kind, represented as an int on the stack. */ |
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42 Short('s', "short", true, true), |
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43 |
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44 /** The primitive char kind, represented as an int on the stack. */ |
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45 Char('c', "char", true, true), |
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46 |
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47 /** The primitive int kind, represented as an int on the stack. */ |
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48 Int('i', "int", true, true), |
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49 |
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50 /** The primitive float kind. */ |
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51 Float('f', "float", true, false), |
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52 |
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53 /** The primitive long kind. */ |
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54 Long('j', "long", true, false), |
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55 |
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56 /** The primitive double kind. */ |
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57 Double('d', "double", true, false), |
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58 |
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59 /** The Object kind, also used for arrays. */ |
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60 Object('a', "Object", false, false), |
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61 |
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62 /** The void float kind. */ |
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63 Void('v', "void", false, false), |
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64 |
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65 /** Denote a bytecode address in a {@code JSR} bytecode. */ |
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66 Jsr('r', "jsr", false, false), |
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67 |
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68 /** The non-type. */ |
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69 Illegal('-', "illegal", false, false); |
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70 |
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71 private Kind(char ch, String name, boolean isPrimitive, boolean isStackInt) { |
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72 this.typeChar = ch; |
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73 this.javaName = name; |
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74 this.isPrimitive = isPrimitive; |
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75 this.isStackInt = isStackInt; |
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76 } |
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77 |
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78 private final boolean isStackInt; |
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79 private final boolean isPrimitive; |
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80 |
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81 /** |
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82 * The name of the kind as a single character. |
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83 */ |
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84 public final char typeChar; |
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85 |
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86 /** |
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87 * The name of this kind which will also be it Java programming language name if it is {@linkplain #isPrimitive() |
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88 * primitive} or {@code void}. |
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89 */ |
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90 public final String javaName; |
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91 |
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92 /** |
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93 * Checks whether this type is valid as an {@code int} on the Java operand stack. |
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94 * |
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95 * @return {@code true} if this type is represented by an {@code int} on the operand stack |
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96 */ |
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97 public boolean isStackInt() { |
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98 return this.isStackInt; |
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99 } |
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100 |
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101 /** |
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102 * Checks whether this type is a Java primitive type. |
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103 * |
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104 * @return {@code true} if this is {@link #Boolean}, {@link #Byte}, {@link #Char}, {@link #Short}, {@link #Int}, |
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105 * {@link #Long}, {@link #Float} or {@link #Double}. |
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106 */ |
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107 public boolean isPrimitive() { |
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108 return this.isPrimitive; |
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109 } |
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110 |
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111 /** |
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112 * Gets the kind that represents this kind when on the Java operand stack. |
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113 * |
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114 * @return the kind used on the operand stack |
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115 */ |
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116 public Kind stackKind() { |
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117 if (isStackInt()) { |
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118 return Int; |
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119 } |
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120 return this; |
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121 } |
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122 |
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123 /** |
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124 * Returns the kind corresponding to the Java type string. |
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125 * |
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126 * @param typeString the Java type string |
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127 * @return the kind |
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128 */ |
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129 public static Kind fromTypeString(String typeString) { |
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130 assert typeString.length() > 0; |
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131 final char first = typeString.charAt(0); |
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132 if (first == '[' || first == 'L') { |
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133 return Kind.Object; |
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134 } |
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135 return Kind.fromPrimitiveOrVoidTypeChar(first); |
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136 } |
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137 |
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138 /** |
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139 * Gets the kind from the character describing a primitive or void. |
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140 * |
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141 * @param ch the character |
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142 * @return the kind |
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143 */ |
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144 public static Kind fromPrimitiveOrVoidTypeChar(char ch) { |
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145 switch (ch) { |
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146 case 'Z': |
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147 return Boolean; |
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148 case 'C': |
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149 return Char; |
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150 case 'F': |
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151 return Float; |
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152 case 'D': |
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153 return Double; |
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154 case 'B': |
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155 return Byte; |
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156 case 'S': |
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157 return Short; |
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158 case 'I': |
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159 return Int; |
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160 case 'J': |
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161 return Long; |
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162 case 'V': |
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163 return Void; |
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164 } |
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165 throw new IllegalArgumentException("unknown primitive or void type character: " + ch); |
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166 } |
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167 |
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168 /** |
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169 * Returns the Java class representing this kind. |
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170 * |
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171 * @return the Java class |
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172 */ |
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173 public Class< ? > toJavaClass() { |
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174 switch (this) { |
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175 case Void: |
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176 return java.lang.Void.TYPE; |
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177 case Long: |
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178 return java.lang.Long.TYPE; |
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179 case Int: |
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180 return java.lang.Integer.TYPE; |
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181 case Byte: |
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182 return java.lang.Byte.TYPE; |
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183 case Char: |
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184 return java.lang.Character.TYPE; |
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185 case Double: |
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186 return java.lang.Double.TYPE; |
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187 case Float: |
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188 return java.lang.Float.TYPE; |
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189 case Short: |
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190 return java.lang.Short.TYPE; |
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191 case Boolean: |
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192 return java.lang.Boolean.TYPE; |
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193 default: |
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194 return null; |
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195 } |
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196 } |
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197 |
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198 /** |
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199 * Returns the Java class for instances of boxed values of this kind. |
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200 * |
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201 * @return the Java class |
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202 */ |
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203 public Class< ? > toBoxedJavaClass() { |
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204 switch (this) { |
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205 case Void: |
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206 return java.lang.Void.class; |
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207 case Long: |
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208 return java.lang.Long.class; |
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209 case Int: |
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210 return java.lang.Integer.class; |
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211 case Byte: |
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212 return java.lang.Byte.class; |
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213 case Char: |
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214 return java.lang.Character.class; |
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215 case Double: |
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216 return java.lang.Double.class; |
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217 case Float: |
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218 return java.lang.Float.class; |
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219 case Short: |
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220 return java.lang.Short.class; |
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221 case Boolean: |
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222 return java.lang.Boolean.class; |
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223 default: |
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224 return null; |
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225 } |
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226 } |
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227 |
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228 /** |
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229 * Checks whether this value type is void. |
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230 * |
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231 * @return {@code true} if this type is void |
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232 */ |
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233 public final boolean isVoid() { |
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234 return this == Kind.Void; |
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235 } |
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236 |
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237 /** |
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238 * Checks whether this value type is long. |
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239 * |
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240 * @return {@code true} if this type is long |
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241 */ |
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242 public final boolean isLong() { |
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243 return this == Kind.Long; |
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244 } |
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245 |
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|
246 /** |
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247 * Checks whether this value type is float. |
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248 * |
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249 * @return {@code true} if this type is float |
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250 */ |
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251 public final boolean isFloat() { |
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252 return this == Kind.Float; |
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253 } |
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254 |
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255 /** |
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256 * Checks whether this value type is double. |
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257 * |
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258 * @return {@code true} if this type is double |
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259 */ |
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260 public final boolean isDouble() { |
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261 return this == Kind.Double; |
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262 } |
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263 |
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264 /** |
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265 * Checks whether this value type is float or double. |
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266 * |
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267 * @return {@code true} if this type is float or double |
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268 */ |
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269 public final boolean isFloatOrDouble() { |
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270 return this == Kind.Double || this == Kind.Float; |
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271 } |
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272 |
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273 /** |
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274 * Checks whether this value type is an object type. |
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275 * |
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276 * @return {@code true} if this type is an object |
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277 */ |
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278 public final boolean isObject() { |
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279 return this == Kind.Object; |
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280 } |
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281 |
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282 /** |
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283 * Checks whether this value type is an address type. |
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284 * |
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285 * @return {@code true} if this type is an address |
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286 */ |
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287 public boolean isJsr() { |
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288 return this == Kind.Jsr; |
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289 } |
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290 |
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291 /** |
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292 * Converts this value type to a string. |
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293 */ |
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294 @Override |
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295 public String toString() { |
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296 return javaName; |
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297 } |
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298 |
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299 /** |
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300 * Marker interface for types that should be {@linkplain Kind#format(Object) formatted} with their |
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301 * {@link Object#toString()} value. |
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302 */ |
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303 public interface FormatWithToString { |
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304 } |
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305 |
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306 /** |
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307 * Gets a formatted string for a given value of this kind. |
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308 * |
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309 * @param value a value of this kind |
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310 * @return a formatted string for {@code value} based on this kind |
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311 */ |
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312 public String format(Object value) { |
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313 if (isObject()) { |
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314 if (value == null) { |
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315 return "null"; |
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316 } else { |
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317 if (value instanceof String) { |
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318 String s = (String) value; |
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319 if (s.length() > 50) { |
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320 return "String:\"" + s.substring(0, 30) + "...\""; |
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321 } else { |
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322 return "String:\"" + s + '"'; |
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323 } |
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324 } else if (value instanceof JavaType) { |
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325 return "JavaType:" + MetaUtil.toJavaName((JavaType) value); |
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326 } else if (value instanceof Enum || value instanceof FormatWithToString || value instanceof Number) { |
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327 return MetaUtil.getSimpleName(value.getClass(), true) + ":" + String.valueOf(value); |
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328 } else if (value instanceof Class< ? >) { |
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329 return "Class:" + ((Class< ? >) value).getName(); |
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330 } else if (value.getClass().isArray()) { |
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331 return formatArray(value); |
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332 } else { |
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333 return MetaUtil.getSimpleName(value.getClass(), true) + "@" + System.identityHashCode(value); |
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334 } |
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335 } |
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336 } else { |
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337 return value.toString(); |
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338 } |
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339 } |
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340 |
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341 private static final int MAX_FORMAT_ARRAY_LENGTH = 5; |
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342 |
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343 private static String formatArray(Object array) { |
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344 Class< ? > componentType = array.getClass().getComponentType(); |
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345 assert componentType != null; |
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346 int arrayLength = Array.getLength(array); |
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347 StringBuilder buf = new StringBuilder(MetaUtil.getSimpleName(componentType, true)).append('[').append(arrayLength).append("]{"); |
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348 int length = Math.min(MAX_FORMAT_ARRAY_LENGTH, arrayLength); |
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349 boolean primitive = componentType.isPrimitive(); |
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350 for (int i = 0; i < length; i++) { |
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351 if (primitive) { |
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352 buf.append(Array.get(array, i)); |
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353 } else { |
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354 Object o = ((Object[]) array)[i]; |
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355 buf.append(Kind.Object.format(o)); |
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356 } |
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357 if (i != length - 1) { |
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358 buf.append(", "); |
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359 } |
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360 } |
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361 if (arrayLength != length) { |
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362 buf.append(", ..."); |
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363 } |
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364 return buf.append('}').toString(); |
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365 } |
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366 |
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367 /** |
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368 * The offset from the origin of an array to the first element. |
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369 * |
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370 * @return the offset in bytes |
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371 */ |
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372 public final int getArrayBaseOffset() { |
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373 switch (this) { |
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374 case Boolean: |
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375 return Unsafe.ARRAY_BOOLEAN_BASE_OFFSET; |
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376 case Byte: |
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377 return Unsafe.ARRAY_BYTE_BASE_OFFSET; |
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378 case Char: |
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379 return Unsafe.ARRAY_CHAR_BASE_OFFSET; |
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380 case Short: |
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381 return Unsafe.ARRAY_SHORT_BASE_OFFSET; |
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382 case Int: |
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383 return Unsafe.ARRAY_INT_BASE_OFFSET; |
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384 case Long: |
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385 return Unsafe.ARRAY_LONG_BASE_OFFSET; |
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|
386 case Float: |
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387 return Unsafe.ARRAY_FLOAT_BASE_OFFSET; |
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388 case Double: |
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389 return Unsafe.ARRAY_DOUBLE_BASE_OFFSET; |
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390 case Object: |
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391 return Unsafe.ARRAY_OBJECT_BASE_OFFSET; |
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392 default: |
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393 assert false : "unexpected kind: " + this; |
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394 return -1; |
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395 } |
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396 } |
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397 |
6328
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398 /** |
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399 * The scale used for the index when accessing elements of an array of this kind. |
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400 * |
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401 * @return the scale in order to convert the index into a byte offset |
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402 */ |
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403 public final int getArrayIndexScale() { |
6e66d97a16ae
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404 switch (this) { |
5456
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parents:
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405 case Boolean: |
a5e43a18ac52
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406 return Unsafe.ARRAY_BOOLEAN_INDEX_SCALE; |
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Doug Simon <doug.simon@oracle.com>
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407 case Byte: |
a5e43a18ac52
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408 return Unsafe.ARRAY_BYTE_INDEX_SCALE; |
a5e43a18ac52
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Doug Simon <doug.simon@oracle.com>
parents:
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409 case Char: |
a5e43a18ac52
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410 return Unsafe.ARRAY_CHAR_INDEX_SCALE; |
a5e43a18ac52
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Doug Simon <doug.simon@oracle.com>
parents:
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411 case Short: |
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412 return Unsafe.ARRAY_SHORT_INDEX_SCALE; |
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Doug Simon <doug.simon@oracle.com>
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413 case Int: |
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414 return Unsafe.ARRAY_INT_INDEX_SCALE; |
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415 case Long: |
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416 return Unsafe.ARRAY_LONG_INDEX_SCALE; |
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417 case Float: |
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418 return Unsafe.ARRAY_FLOAT_INDEX_SCALE; |
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419 case Double: |
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420 return Unsafe.ARRAY_DOUBLE_INDEX_SCALE; |
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421 case Object: |
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|
422 return Unsafe.ARRAY_OBJECT_INDEX_SCALE; |
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|
423 default: |
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424 assert false : "unexpected kind: " + this; |
a5e43a18ac52
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|
425 return -1; |
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|
426 } |
a5e43a18ac52
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|
427 } |
a5e43a18ac52
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|
428 |
6328
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff
changeset
|
429 /** |
6e66d97a16ae
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|
430 * Utility function for reading a value of this kind using an object and a displacement. |
6e66d97a16ae
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|
431 * |
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|
432 * @param object the object from which the value is read |
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433 * @param displacement the displacement within the object in bytes |
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434 * @return the read value encapsulated in a {@link Constant} object |
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|
435 */ |
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|
436 public Constant readUnsafeConstant(Object object, long displacement) { |
6e66d97a16ae
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437 assert object != null; |
3733
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diff
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|
438 Unsafe u = Unsafe.getUnsafe(); |
6328
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|
439 switch (this) { |
3733
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diff
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|
440 case Boolean: |
6328
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441 return Constant.forBoolean(u.getBoolean(object, displacement)); |
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|
442 case Byte: |
6328
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443 return Constant.forByte(u.getByte(object, displacement)); |
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444 case Char: |
6328
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445 return Constant.forChar(u.getChar(object, displacement)); |
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|
446 case Short: |
6328
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447 return Constant.forShort(u.getShort(object, displacement)); |
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448 case Int: |
6328
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449 return Constant.forInt(u.getInt(object, displacement)); |
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|
450 case Long: |
6328
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451 return Constant.forLong(u.getLong(object, displacement)); |
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|
452 case Float: |
6328
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|
453 return Constant.forFloat(u.getFloat(object, displacement)); |
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|
454 case Double: |
6328
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|
455 return Constant.forDouble(u.getDouble(object, displacement)); |
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diff
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|
456 case Object: |
6328
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457 return Constant.forObject(u.getObject(object, displacement)); |
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diff
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|
458 default: |
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|
459 assert false : "unexpected kind: " + this; |
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diff
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|
460 return null; |
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diff
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|
461 } |
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parents:
diff
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|
462 } |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff
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|
463 |
6328
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diff
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|
464 /** |
6e66d97a16ae
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|
465 * The minimum value that can be represented as a value of this kind. |
6e66d97a16ae
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|
466 * |
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|
467 * @return the minimum value |
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|
468 */ |
6e66d97a16ae
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|
469 public long getMinValue() { |
5441
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
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|
470 switch (this) { |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
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diff
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|
471 case Boolean: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
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diff
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|
472 return 0; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
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|
473 case Byte: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
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|
474 return java.lang.Byte.MIN_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
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changeset
|
475 case Char: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
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|
476 return java.lang.Character.MIN_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
477 case Short: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
478 return java.lang.Short.MIN_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
479 case Jsr: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
480 case Int: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
481 return java.lang.Integer.MIN_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
482 case Long: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
483 return java.lang.Long.MIN_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
484 default: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
485 throw new IllegalArgumentException("illegal call to minValue on " + this); |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
486 } |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
487 } |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
488 |
6328
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
489 /** |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
490 * The maximum value that can be represented as a value of this kind. |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
491 * |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
492 * @return the maximum value |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
493 */ |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
494 public long getMaxValue() { |
5441
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
495 switch (this) { |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
496 case Boolean: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
497 return 1; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
498 case Byte: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
499 return java.lang.Byte.MAX_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
500 case Char: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
501 return java.lang.Character.MAX_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
502 case Short: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
503 return java.lang.Short.MAX_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
504 case Jsr: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
505 case Int: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
506 return java.lang.Integer.MAX_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
507 case Long: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
508 return java.lang.Long.MAX_VALUE; |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
509 default: |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
510 throw new IllegalArgumentException("illegal call to maxValue on " + this); |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
511 } |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
512 } |
ab31310d4af9
CiKind.minValue and CiKind.maxValue for integer types
Lukas Stadler <lukas.stadler@jku.at>
parents:
5363
diff
changeset
|
513 |
6328
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
514 /** |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
515 * Number of bits that are necessary to represent a value of this kind. |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
516 * |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
517 * @return the number of bits |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
518 */ |
6e66d97a16ae
Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
6313
diff
changeset
|
519 public int getBitCount() { |
5874
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
520 switch (this) { |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
521 case Boolean: |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
522 return 1; |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
523 case Byte: |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
524 return 8; |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
525 case Char: |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
526 case Short: |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
527 return 16; |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
528 case Jsr: |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
529 case Int: |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
530 return 32; |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
531 case Long: |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
532 return 64; |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
533 default: |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
534 throw new IllegalArgumentException("illegal call to bits on " + this); |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
535 } |
f0d4304243ff
Add intrinsics for (Long|Integer).(reverseBytes|numberOf(Trail|Lead)ingZeros)
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
5793
diff
changeset
|
536 } |
3733
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
537 } |