Mercurial > hg > truffle
annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiKind.java @ 4266:e2499e6d8aa7
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author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Wed, 11 Jan 2012 16:31:46 +0100 |
parents | aaac4894175c |
children | 87a12a816e99 |
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1 /* |
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2 * Copyright (c) 2009, 2011, 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.max.cri.ci; |
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24 |
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25 import static com.oracle.max.cri.ci.CiKind.Flags.*; |
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26 import sun.misc.*; |
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27 |
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28 import com.oracle.max.cri.ri.*; |
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29 |
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30 /** |
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31 * Denotes the basic kinds of types in CRI, including the all the Java primitive types, |
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32 * for example, {@link CiKind#Int} for {@code int} and {@link CiKind#Object} |
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33 * for all object types. |
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34 * A kind has a single character short name, a Java name, and a set of flags |
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35 * further describing its behavior. |
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36 */ |
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37 public enum CiKind { |
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38 Boolean('z', "boolean", FIELD_TYPE | RETURN_TYPE | PRIMITIVE | STACK_INT), |
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39 Byte ('b', "byte", FIELD_TYPE | RETURN_TYPE | PRIMITIVE | STACK_INT), |
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40 Short ('s', "short", FIELD_TYPE | RETURN_TYPE | PRIMITIVE | STACK_INT), |
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41 Char ('c', "char", FIELD_TYPE | RETURN_TYPE | PRIMITIVE | STACK_INT), |
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42 Int ('i', "int", FIELD_TYPE | RETURN_TYPE | PRIMITIVE | STACK_INT), |
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43 Float ('f', "float", FIELD_TYPE | RETURN_TYPE | PRIMITIVE), |
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44 Long ('j', "long", FIELD_TYPE | RETURN_TYPE | PRIMITIVE), |
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45 Double ('d', "double", FIELD_TYPE | RETURN_TYPE | PRIMITIVE), |
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46 Object ('a', "Object", FIELD_TYPE | RETURN_TYPE), |
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47 Void ('v', "void", RETURN_TYPE), |
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48 /** Denote a bytecode address in a {@code JSR} bytecode. */ |
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49 Jsr ('r', "jsr", 0), |
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50 /** The non-type. */ |
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51 Illegal('-', "illegal", 0); |
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52 |
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53 public static final CiKind[] VALUES = values(); |
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54 public static final CiKind[] JAVA_VALUES = new CiKind[] {CiKind.Boolean, CiKind.Byte, CiKind.Short, CiKind.Char, CiKind.Int, CiKind.Float, CiKind.Long, CiKind.Double, CiKind.Object}; |
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55 |
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56 CiKind(char ch, String name, int flags) { |
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57 this.typeChar = ch; |
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58 this.javaName = name; |
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59 this.flags = flags; |
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60 } |
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61 |
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62 static class Flags { |
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63 /** |
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64 * Can be an object field type. |
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65 */ |
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66 public static final int FIELD_TYPE = 0x0001; |
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67 /** |
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68 * Can be result type of a method. |
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69 */ |
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70 public static final int RETURN_TYPE = 0x0002; |
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71 /** |
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72 * Behaves as an integer when on Java evaluation stack. |
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73 */ |
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74 public static final int STACK_INT = 0x0004; |
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75 /** |
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76 * Represents a Java primitive type. |
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77 */ |
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78 public static final int PRIMITIVE = 0x0008; |
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79 } |
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80 |
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81 /** |
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82 * The flags for this kind. |
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83 */ |
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84 private final int flags; |
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85 |
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86 /** |
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87 * The name of the kind as a single character. |
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88 */ |
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89 public final char typeChar; |
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90 |
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91 /** |
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92 * The name of this kind which will also be it Java programming language name if |
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93 * it is {@linkplain #isPrimitive() primitive} or {@code void}. |
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94 */ |
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95 public final String javaName; |
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96 |
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97 /** |
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98 * Checks whether this kind is valid as the type of a field. |
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99 * @return {@code true} if this kind is valid as the type of a Java field |
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100 */ |
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101 public boolean isValidFieldType() { |
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102 return (flags & FIELD_TYPE) != 0; |
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103 } |
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104 |
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105 /** |
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106 * Checks whether this kind is valid as the return type of a method. |
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107 * @return {@code true} if this kind is valid as the return type of a Java method |
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108 */ |
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109 public boolean isValidReturnType() { |
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110 return (flags & RETURN_TYPE) != 0; |
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111 } |
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112 |
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113 /** |
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114 * Checks whether this type is valid as an {@code int} on the Java operand stack. |
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115 * @return {@code true} if this type is represented by an {@code int} on the operand stack |
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116 */ |
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117 public boolean isInt() { |
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118 return (flags & STACK_INT) != 0; |
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119 } |
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120 |
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121 /** |
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122 * Checks whether this type is a Java primitive type. |
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123 * @return {@code true} if this is {@link #Boolean}, {@link #Byte}, {@link #Char}, {@link #Short}, |
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124 * {@link #Int}, {@link #Long}, {@link #Float} or {@link #Double}. |
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125 */ |
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126 public boolean isPrimitive() { |
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127 return (flags & PRIMITIVE) != 0; |
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128 } |
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129 |
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130 /** |
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131 * Gets the kind that represents this kind when on the Java operand stack. |
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132 * @return the kind used on the operand stack |
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133 */ |
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134 public CiKind stackKind() { |
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135 if (isInt()) { |
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136 return Int; |
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137 } |
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138 return this; |
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139 } |
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140 |
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141 public static CiKind fromTypeString(String typeString) { |
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142 assert typeString.length() > 0; |
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143 final char first = typeString.charAt(0); |
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144 if (first == '[' || first == 'L') { |
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145 return CiKind.Object; |
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146 } |
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147 return CiKind.fromPrimitiveOrVoidTypeChar(first); |
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148 } |
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149 |
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150 /** |
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151 * Gets the kind from the character describing a primitive or void. |
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152 * @param ch the character |
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153 * @return the kind |
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154 */ |
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155 public static CiKind fromPrimitiveOrVoidTypeChar(char ch) { |
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156 // Checkstyle: stop |
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157 switch (ch) { |
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158 case 'Z': return Boolean; |
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159 case 'C': return Char; |
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160 case 'F': return Float; |
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161 case 'D': return Double; |
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162 case 'B': return Byte; |
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163 case 'S': return Short; |
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164 case 'I': return Int; |
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165 case 'J': return Long; |
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166 case 'V': return Void; |
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167 } |
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168 // Checkstyle: resume |
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169 throw new IllegalArgumentException("unknown primitive or void type character: " + ch); |
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170 } |
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171 |
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172 public Class< ? > toJavaClass() { |
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173 // Checkstyle: stop |
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174 switch(this) { |
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175 case Void: return java.lang.Void.TYPE; |
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176 case Long: return java.lang.Long.TYPE; |
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177 case Int: return java.lang.Integer.TYPE; |
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178 case Byte: return java.lang.Byte.TYPE; |
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179 case Char: return java.lang.Character.TYPE; |
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180 case Double: return java.lang.Double.TYPE; |
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181 case Float: return java.lang.Float.TYPE; |
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182 case Short: return java.lang.Short.TYPE; |
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183 case Boolean: return java.lang.Boolean.TYPE; |
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184 default: return null; |
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185 } |
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186 // Checkstyle: resume |
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187 } |
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188 |
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189 public Class< ? > toUnboxedJavaClass() { |
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190 // Checkstyle: stop |
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191 switch(this) { |
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192 case Void: return null; |
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193 case Long: return java.lang.Long.class; |
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194 case Int: return java.lang.Integer.class; |
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195 case Byte: return java.lang.Byte.class; |
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196 case Char: return java.lang.Character.class; |
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197 case Double: return java.lang.Double.class; |
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198 case Float: return java.lang.Float.class; |
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199 case Short: return java.lang.Short.class; |
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200 case Boolean: return java.lang.Boolean.class; |
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201 default: return null; |
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202 } |
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203 // Checkstyle: resume |
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204 } |
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205 |
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|
206 /** |
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207 * Checks whether this value type is void. |
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208 * @return {@code true} if this type is void |
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|
209 */ |
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210 public final boolean isVoid() { |
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211 return this == CiKind.Void; |
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|
212 } |
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213 |
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|
214 /** |
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|
215 * Checks whether this value type is long. |
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216 * @return {@code true} if this type is long |
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|
217 */ |
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|
218 public final boolean isLong() { |
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219 return this == CiKind.Long; |
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220 } |
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|
221 |
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diff
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|
222 /** |
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|
223 * Checks whether this value type is float. |
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|
224 * @return {@code true} if this type is float |
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|
225 */ |
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|
226 public final boolean isFloat() { |
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|
227 return this == CiKind.Float; |
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228 } |
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|
229 |
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|
230 /** |
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|
231 * Checks whether this value type is double. |
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|
232 * @return {@code true} if this type is double |
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diff
changeset
|
233 */ |
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|
234 public final boolean isDouble() { |
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|
235 return this == CiKind.Double; |
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|
236 } |
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|
237 |
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|
238 /** |
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|
239 * Checks whether this value type is float or double. |
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|
240 * @return {@code true} if this type is float or double |
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parents:
diff
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|
241 */ |
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|
242 public final boolean isFloatOrDouble() { |
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|
243 return this == CiKind.Double || this == CiKind.Float; |
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|
244 } |
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|
245 |
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parents:
diff
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|
246 /** |
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|
247 * Checks whether this value type is an object type. |
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|
248 * @return {@code true} if this type is an object |
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|
249 */ |
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250 public final boolean isObject() { |
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251 return this == CiKind.Object; |
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252 } |
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253 |
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254 /** |
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255 * Checks whether this value type is an address type. |
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256 * @return {@code true} if this type is an address |
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257 */ |
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258 public boolean isJsr() { |
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259 return this == CiKind.Jsr; |
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260 } |
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261 |
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262 /** |
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263 * Converts this value type to a string. |
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264 */ |
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265 @Override |
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266 public String toString() { |
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267 return javaName; |
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268 } |
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269 |
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270 /** |
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271 * Marker interface for types that should be {@linkplain CiKind#format(Object) formatted} |
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272 * with their {@link Object#toString()} value. |
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273 */ |
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274 public interface FormatWithToString {} |
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275 |
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276 /** |
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277 * Gets a formatted string for a given value of this kind. |
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278 * |
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279 * @param value a value of this kind |
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280 * @return a formatted string for {@code value} based on this kind |
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281 */ |
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282 public String format(Object value) { |
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283 if (isObject()) { |
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284 if (value == null) { |
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285 return "null"; |
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286 } else { |
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287 if (value instanceof String) { |
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288 String s = (String) value; |
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289 if (s.length() > 50) { |
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290 return "\"" + s.substring(0, 30) + "...\""; |
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291 } else { |
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292 return " \"" + s + '"'; |
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293 } |
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294 } else if (value instanceof RiType) { |
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295 return "class " + CiUtil.toJavaName((RiType) value); |
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296 } else if (value instanceof Enum || value instanceof FormatWithToString) { |
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297 return String.valueOf(value); |
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298 } else if (value instanceof Class< ? >) { |
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299 return ((Class< ? >) value).getName() + ".class"; |
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300 } else { |
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301 return CiUtil.getSimpleName(value.getClass(), true) + "@" + System.identityHashCode(value); |
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302 } |
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303 } |
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304 } else { |
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305 return value.toString(); |
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306 } |
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307 } |
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308 |
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309 public final char signatureChar() { |
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310 return Character.toUpperCase(typeChar); |
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311 } |
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312 |
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313 public CiConstant readUnsafeConstant(Object value, long displacement) { |
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314 Unsafe u = Unsafe.getUnsafe(); |
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315 switch(this) { |
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316 case Boolean: |
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317 return CiConstant.forBoolean(u.getBoolean(value, displacement)); |
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318 case Byte: |
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319 return CiConstant.forByte(u.getByte(value, displacement)); |
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320 case Char: |
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321 return CiConstant.forChar(u.getChar(value, displacement)); |
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322 case Short: |
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323 return CiConstant.forShort(u.getShort(value, displacement)); |
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324 case Int: |
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325 return CiConstant.forInt(u.getInt(value, displacement)); |
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326 case Long: |
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327 return CiConstant.forLong(u.getLong(value, displacement)); |
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328 case Float: |
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329 return CiConstant.forFloat(u.getFloat(value, displacement)); |
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330 case Double: |
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331 return CiConstant.forDouble(u.getDouble(value, displacement)); |
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332 case Object: |
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333 return CiConstant.forObject(u.getObject(value, displacement)); |
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334 default: |
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335 assert false : "unexpected kind: " + this; |
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336 return null; |
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337 } |
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338 } |
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339 |
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340 } |