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;

 import sun.tools.java.MemberDefinition;

 /**

  * ImplementationType represents any non-special class which implements

  * one or more interfaces which inherit from java.rmi.Remote.

  * <p>

  * The static forImplementation(...) method must be used to obtain an instance,

  * and will return null if the ClassDefinition is non-conforming.

  *

  * @author      Bryan Atsatt

  */

 public class ImplementationType extends ClassType {

     //_____________________________________________________________________

     // Public Interfaces

     //_____________________________________________________________________

     /**

      * Create an ImplementationType 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 ImplementationType forImplementation(ClassDefinition classDef,

                                                        ContextStack stack,

                                                        boolean quiet) {

         if (stack.anyErrors()) return null;

         boolean doPop = false;

         ImplementationType 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 ImplementationType)) return null; // False hit.

                                 // Yep, so return it...

                 return (ImplementationType) existing;

             }

             // Could this be an implementation?

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

                 // Yes, so check it...

                 ImplementationType it = new ImplementationType(stack, classDef);

                 putType(theType,it,stack);

                 stack.push(it);

                 doPop = true;

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

                     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 "Implementation";

     }

     //_____________________________________________________________________

     // Internal Interfaces

     //_____________________________________________________________________

     /**

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

      * object is not yet completely initialized.

      */

     private ImplementationType(ContextStack stack, ClassDefinition classDef) {

         super(TYPE_IMPLEMENTATION | TM_CLASS | TM_COMPOUND,classDef,stack); // Use special constructor.

     }

     private static boolean couldBeImplementation(boolean quiet, ContextStack stack,

                                                  ClassDefinition classDef) {

         boolean result = false;

         BatchEnvironment env = stack.getEnv();

         try {

             if (!classDef.isClass()) {

                 failedConstraint(17,quiet,stack,classDef.getName());

             } else {

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

                 if (!result) failedConstraint(8,quiet,stack,classDef.getName());

             }

         } catch (ClassNotFound e) {

             classNotFound(stack,e);

         }

         return result;

     }

     /**

      * Initialize this instance.

      */

     private boolean initialize (ContextStack stack, boolean quiet) {

         boolean result = false;

         ClassDefinition theClass = getClassDefinition();

         if (initParents(stack)) {

             // Make up our collections...

             Vector directInterfaces = new Vector();

             Vector directMethods = new Vector();

             // Check interfaces...

             try {

                 if (addRemoteInterfaces(directInterfaces,true,stack) != null) {

                     boolean haveRemote = false;

                     // Get methods from all interfaces...

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

                         InterfaceType theInt = (InterfaceType) directInterfaces.elementAt(i);

                         if (theInt.isType(TYPE_REMOTE) ||

                             theInt.isType(TYPE_JAVA_RMI_REMOTE)) {

                             haveRemote = true;

                         }

                         copyRemoteMethods(theInt,directMethods);

                     }

                     // Make sure we have at least one remote interface...

                     if (!haveRemote) {

                         failedConstraint(8,quiet,stack,getQualifiedName());

                         return false;

                     }

                     // Now check the methods to ensure we have the

                     // correct throws clauses...

                     if (checkMethods(theClass,directMethods,stack,quiet)) {

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

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

                     }

                 }

             } catch (ClassNotFound e) {

                 classNotFound(stack,e);

             }

         }

         return result;

     }

     private static void copyRemoteMethods(InterfaceType type, Vector list) {

         if (type.isType(TYPE_REMOTE)) {

             // Copy all the unique methods from type...

             Method[] allMethods = type.getMethods();

             for (int i = 0; i < allMethods.length; i++) {

                 Method theMethod = allMethods[i];

                 if (!list.contains(theMethod)) {

                     list.addElement(theMethod);

                 }

             }

             // Now recurse thru all inherited interfaces...

             InterfaceType[] allInterfaces = type.getInterfaces();

             for (int i = 0; i < allInterfaces.length; i++) {

                 copyRemoteMethods(allInterfaces[i],list);

             }

         }

     }

     // Walk all methods of the class, and for each that is already in

     // the list, call setImplExceptions()...

     private boolean checkMethods(ClassDefinition theClass, Vector list,

                                  ContextStack stack, boolean quiet) {

         // Convert vector to array...

         Method[] methods = new Method[list.size()];

         list.copyInto(methods);

         for (MemberDefinition member = theClass.getFirstMember();

              member != null;

              member = member.getNextMember()) {

             if (member.isMethod() && !member.isConstructor()

                 && !member.isInitializer()) {

                 // It's a method...

                 if (!updateExceptions(member,methods,stack,quiet)) {

                     return false;

                 }

             }

         }

         return true;

     }

     private boolean updateExceptions (MemberDefinition implMethod, Method[] list,

                                       ContextStack stack, boolean quiet) {

         int length = list.length;

         String implMethodSig = implMethod.toString();

         for (int i = 0; i < length; i++) {

             Method existingMethod = list[i];

             MemberDefinition existing = existingMethod.getMemberDefinition();

             // Do we have a matching method?

             if (implMethodSig.equals(existing.toString())) {

                 // Yes, so create exception list...

                 try {

                     ValueType[] implExcept = getMethodExceptions(implMethod,quiet,stack);

                     existingMethod.setImplExceptions(implExcept);

                 } catch (Exception e) {

                     return false;

                 }

             }

         }

         return true;

     }

 }