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1 /* |
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2 * Portions Copyright 1998-2007 Sun Microsystems, Inc. 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. Sun designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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22 * CA 95054 USA or visit www.sun.com if you need additional information or |
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23 * have any questions. |
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24 */ |
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25 |
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26 /* |
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27 * Licensed Materials - Property of IBM |
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28 * RMI-IIOP v1.0 |
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29 * Copyright IBM Corp. 1998 1999 All Rights Reserved |
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30 * |
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31 */ |
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32 |
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33 package sun.rmi.rmic.iiop; |
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34 |
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35 import java.util.Vector; |
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36 import sun.tools.java.CompilerError; |
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37 import sun.tools.java.ClassNotFound; |
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38 import sun.tools.java.ClassDefinition; |
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39 |
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40 /** |
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41 * AbstractType represents any non-special interface which does not |
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42 * inherit from java.rmi.Remote, for which all methods throw RemoteException. |
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43 * <p> |
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44 * The static forAbstract(...) method must be used to obtain an instance, and will |
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45 * return null if the ClassDefinition is non-conforming. |
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46 * @author Bryan Atsatt |
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47 */ |
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48 public class AbstractType extends RemoteType { |
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49 |
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50 //_____________________________________________________________________ |
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51 // Public Interfaces |
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52 //_____________________________________________________________________ |
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53 |
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54 /** |
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55 * Create an AbstractType for the given class. |
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56 * |
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57 * If the class is not a properly formed or if some other error occurs, the |
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58 * return value will be null, and errors will have been reported to the |
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59 * supplied BatchEnvironment. |
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60 */ |
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61 public static AbstractType forAbstract(ClassDefinition classDef, |
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62 ContextStack stack, |
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63 boolean quiet) |
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64 { |
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65 boolean doPop = false; |
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66 AbstractType result = null; |
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67 |
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68 try { |
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69 |
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70 // Do we already have it? |
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71 |
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72 sun.tools.java.Type theType = classDef.getType(); |
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73 Type existing = getType(theType,stack); |
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74 |
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75 if (existing != null) { |
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76 |
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77 if (!(existing instanceof AbstractType)) return null; // False hit. |
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78 |
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79 // Yep, so return it... |
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80 |
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81 return (AbstractType) existing; |
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82 |
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83 } |
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84 |
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85 // Could this be an abstract? |
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86 |
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87 if (couldBeAbstract(stack,classDef,quiet)) { |
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88 |
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89 // Yes, so try it... |
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90 |
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91 AbstractType it = new AbstractType(stack, classDef); |
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92 putType(theType,it,stack); |
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93 stack.push(it); |
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94 doPop = true; |
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95 |
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96 if (it.initialize(quiet,stack)) { |
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97 stack.pop(true); |
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98 result = it; |
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99 } else { |
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100 removeType(theType,stack); |
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101 stack.pop(false); |
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102 } |
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103 } |
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104 } catch (CompilerError e) { |
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105 if (doPop) stack.pop(false); |
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106 } |
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107 |
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108 return result; |
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109 } |
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110 |
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111 /** |
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112 * Return a string describing this type. |
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113 */ |
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114 public String getTypeDescription () { |
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115 return "Abstract interface"; |
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116 } |
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117 |
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118 //_____________________________________________________________________ |
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119 // Internal/Subclass Interfaces |
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120 //_____________________________________________________________________ |
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121 |
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122 /** |
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123 * Create a AbstractType instance for the given class. The resulting |
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124 * object is not yet completely initialized. |
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125 */ |
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126 private AbstractType(ContextStack stack, ClassDefinition classDef) { |
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127 super(stack,classDef,TYPE_ABSTRACT | TM_INTERFACE | TM_COMPOUND); |
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128 } |
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129 |
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130 //_____________________________________________________________________ |
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131 // Internal Interfaces |
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132 //_____________________________________________________________________ |
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133 |
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134 |
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135 private static boolean couldBeAbstract(ContextStack stack, ClassDefinition classDef, |
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136 boolean quiet) { |
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137 |
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138 // Return true if interface and not remote... |
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139 |
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140 boolean result = false; |
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141 |
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142 if (classDef.isInterface()) { |
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143 BatchEnvironment env = stack.getEnv(); |
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144 |
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145 try { |
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146 result = ! env.defRemote.implementedBy(env, classDef.getClassDeclaration()); |
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147 if (!result) failedConstraint(15,quiet,stack,classDef.getName()); |
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148 } catch (ClassNotFound e) { |
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149 classNotFound(stack,e); |
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150 } |
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151 } else { |
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152 failedConstraint(14,quiet,stack,classDef.getName()); |
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153 } |
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154 |
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155 |
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156 return result; |
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157 } |
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158 |
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159 |
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160 /** |
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161 * Initialize this instance. |
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162 */ |
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163 private boolean initialize (boolean quiet,ContextStack stack) { |
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164 |
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165 boolean result = false; |
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166 ClassDefinition self = getClassDefinition(); |
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167 |
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168 try { |
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169 |
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170 // Get methods... |
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171 |
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172 Vector directMethods = new Vector(); |
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173 |
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174 if (addAllMethods(self,directMethods,true,quiet,stack) != null) { |
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175 |
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176 // Do we have any methods? |
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177 |
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178 boolean validMethods = true; |
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179 |
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180 if (directMethods.size() > 0) { |
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181 |
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182 // Yes. Walk 'em, ensuring each is a valid remote method... |
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183 |
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184 for (int i = 0; i < directMethods.size(); i++) { |
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185 |
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186 if (! isConformingRemoteMethod((Method) directMethods.elementAt(i),true)) { |
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187 validMethods = false; |
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188 } |
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189 } |
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190 } |
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191 |
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192 if (validMethods) { |
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193 |
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194 // We're ok, so pass 'em up... |
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195 |
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196 result = initialize(null,directMethods,null,stack,quiet); |
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197 } |
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198 } |
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199 } catch (ClassNotFound e) { |
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200 classNotFound(stack,e); |
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201 } |
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202 |
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203 return result; |
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204 } |
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205 } |