1 /* |
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2 * Copyright (c) 2003, 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 |
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26 package sun.rmi.rmic.newrmic.jrmp; |
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27 |
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28 import com.sun.javadoc.ClassDoc; |
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29 import com.sun.javadoc.MethodDoc; |
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30 import com.sun.javadoc.Parameter; |
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31 import com.sun.javadoc.Type; |
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32 |
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33 /** |
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34 * Provides static utility methods. |
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35 * |
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36 * WARNING: The contents of this source file are not part of any |
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37 * supported API. Code that depends on them does so at its own risk: |
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38 * they are subject to change or removal without notice. |
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39 * |
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40 * @author Peter Jones |
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41 **/ |
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42 final class Util { |
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43 |
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44 private Util() { throw new AssertionError(); } |
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45 |
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46 /** |
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47 * Returns the binary name of the class or interface represented |
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48 * by the specified ClassDoc. |
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49 **/ |
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50 static String binaryNameOf(ClassDoc cl) { |
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51 String flat = cl.name().replace('.', '$'); |
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52 String packageName = cl.containingPackage().name(); |
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53 return packageName.equals("") ? flat : packageName + "." + flat; |
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54 } |
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55 |
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56 /** |
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57 * Returns the method descriptor for the specified method. |
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58 * |
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59 * See section 4.3.3 of The Java Virtual Machine Specification |
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60 * Second Edition for the definition of a "method descriptor". |
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61 **/ |
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62 static String methodDescriptorOf(MethodDoc method) { |
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63 String desc = "("; |
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64 Parameter[] parameters = method.parameters(); |
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65 for (int i = 0; i < parameters.length; i++) { |
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66 desc += typeDescriptorOf(parameters[i].type()); |
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67 } |
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68 desc += ")" + typeDescriptorOf(method.returnType()); |
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69 return desc; |
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70 } |
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71 |
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72 /** |
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73 * Returns the descriptor for the specified type, as appropriate |
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74 * for either a parameter or return type in a method descriptor. |
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75 **/ |
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76 private static String typeDescriptorOf(Type type) { |
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77 String desc; |
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78 ClassDoc classDoc = type.asClassDoc(); |
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79 if (classDoc == null) { |
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80 /* |
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81 * Handle primitive types. |
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82 */ |
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83 String name = type.typeName(); |
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84 if (name.equals("boolean")) { |
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85 desc = "Z"; |
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86 } else if (name.equals("byte")) { |
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87 desc = "B"; |
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88 } else if (name.equals("char")) { |
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89 desc = "C"; |
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90 } else if (name.equals("short")) { |
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91 desc = "S"; |
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92 } else if (name.equals("int")) { |
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93 desc = "I"; |
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94 } else if (name.equals("long")) { |
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95 desc = "J"; |
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96 } else if (name.equals("float")) { |
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97 desc = "F"; |
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98 } else if (name.equals("double")) { |
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99 desc = "D"; |
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100 } else if (name.equals("void")) { |
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101 desc = "V"; |
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102 } else { |
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103 throw new AssertionError( |
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104 "unrecognized primitive type: " + name); |
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105 } |
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106 } else { |
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107 /* |
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108 * Handle non-array reference types. |
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109 */ |
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110 desc = "L" + binaryNameOf(classDoc).replace('.', '/') + ";"; |
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111 } |
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112 |
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113 /* |
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114 * Handle array types. |
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115 */ |
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116 int dimensions = type.dimension().length() / 2; |
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117 for (int i = 0; i < dimensions; i++) { |
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118 desc = "[" + desc; |
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119 } |
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120 |
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121 return desc; |
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122 } |
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123 |
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124 /** |
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125 * Returns a reader-friendly string representation of the |
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126 * specified method's signature. Names of reference types are not |
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127 * package-qualified. |
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128 **/ |
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129 static String getFriendlyUnqualifiedSignature(MethodDoc method) { |
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130 String sig = method.name() + "("; |
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131 Parameter[] parameters = method.parameters(); |
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132 for (int i = 0; i < parameters.length; i++) { |
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133 if (i > 0) { |
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134 sig += ", "; |
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135 } |
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136 Type paramType = parameters[i].type(); |
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137 sig += paramType.typeName() + paramType.dimension(); |
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138 } |
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139 sig += ")"; |
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140 return sig; |
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141 } |
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142 |
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143 /** |
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144 * Returns true if the specified type is void. |
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145 **/ |
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146 static boolean isVoid(Type type) { |
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147 return type.asClassDoc() == null && type.typeName().equals("void"); |
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148 } |
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149 } |
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