Mercurial > jdk8-mips64-public > corba / file revision

 /*

  * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 /*

  * Licensed Materials - Property of IBM

  * RMI-IIOP v1.0

  * Copyright IBM Corp. 1998 1999  All Rights Reserved

  *

  */

 package sun.rmi.rmic.iiop;

 import java.util.Vector;

 import sun.tools.java.CompilerError;

 import sun.tools.java.ClassNotFound;

 import sun.tools.java.ClassDefinition;

 /**

  * AbstractType represents any non-special interface which does not

  * inherit from java.rmi.Remote, for which all methods throw RemoteException.

  * <p>

  * The static forAbstract(...) method must be used to obtain an instance, and will

  * return null if the ClassDefinition is non-conforming.

  * @author      Bryan Atsatt

  */

 public class AbstractType extends RemoteType {

     //_____________________________________________________________________

     // Public Interfaces

     //_____________________________________________________________________

     /**

      * Create an AbstractType for the given class.

      *

      * If the class is not a properly formed or if some other error occurs, the

      * return value will be null, and errors will have been reported to the

      * supplied BatchEnvironment.

      */

     public static AbstractType forAbstract(ClassDefinition classDef,

                                            ContextStack stack,

                                            boolean quiet)

     {

         boolean doPop = false;

         AbstractType result = null;

         try {

             // Do we already have it?

             sun.tools.java.Type theType = classDef.getType();

             Type existing = getType(theType,stack);

             if (existing != null) {

                 if (!(existing instanceof AbstractType)) return null; // False hit.

                                 // Yep, so return it...

                 return (AbstractType) existing;

             }

             // Could this be an abstract?

             if (couldBeAbstract(stack,classDef,quiet)) {

                 // Yes, so try it...

                 AbstractType it = new AbstractType(stack, classDef);

                 putType(theType,it,stack);

                 stack.push(it);

                 doPop = true;

                 if (it.initialize(quiet,stack)) {

                     stack.pop(true);

                     result = it;

                 } else {

                     removeType(theType,stack);

                     stack.pop(false);

                 }

             }

         } catch (CompilerError e) {

             if (doPop) stack.pop(false);

         }

         return result;

     }

     /**

      * Return a string describing this type.

      */

     public String getTypeDescription () {

         return "Abstract interface";

     }

     //_____________________________________________________________________

     // Internal/Subclass Interfaces

     //_____________________________________________________________________

     /**

      * Create a AbstractType instance for the given class.  The resulting

      * object is not yet completely initialized.

      */

     private AbstractType(ContextStack stack, ClassDefinition classDef) {

         super(stack,classDef,TYPE_ABSTRACT | TM_INTERFACE | TM_COMPOUND);

     }

     //_____________________________________________________________________

     // Internal Interfaces

     //_____________________________________________________________________

     private static boolean couldBeAbstract(ContextStack stack, ClassDefinition classDef,

                                            boolean quiet) {

         // Return true if interface and not remote...

         boolean result = false;

         if (classDef.isInterface()) {

             BatchEnvironment env = stack.getEnv();

             try {

                 result = ! env.defRemote.implementedBy(env, classDef.getClassDeclaration());

                 if (!result) failedConstraint(15,quiet,stack,classDef.getName());

             } catch (ClassNotFound e) {

                 classNotFound(stack,e);

             }

         } else {

             failedConstraint(14,quiet,stack,classDef.getName());

         }

         return result;

     }

     /**

      * Initialize this instance.

      */

     private boolean initialize (boolean quiet,ContextStack stack) {

         boolean result = false;

         ClassDefinition self = getClassDefinition();

         try {

             // Get methods...

             Vector directMethods = new Vector();

             if (addAllMethods(self,directMethods,true,quiet,stack) != null) {

                 // Do we have any methods?

                 boolean validMethods = true;

                 if (directMethods.size() > 0) {

                                 // Yes. Walk 'em, ensuring each is a valid remote method...

                     for (int i = 0; i < directMethods.size(); i++) {

                         if (! isConformingRemoteMethod((Method) directMethods.elementAt(i),true)) {

                             validMethods = false;

                         }

                     }

                 }

                 if (validMethods) {

                     // We're ok, so pass 'em up...

                     result = initialize(null,directMethods,null,stack,quiet);

                 }

             }

         } catch (ClassNotFound e) {

             classNotFound(stack,e);

         }

         return result;

     }

 }