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/*
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* Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* Licensed Materials - Property of IBM
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* RMI-IIOP v1.0
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* Copyright IBM Corp. 1998 1999 All Rights Reserved
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*
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*/
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package sun.rmi.rmic.iiop;
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import java.util.Vector;
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import sun.tools.java.CompilerError;
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import sun.tools.java.ClassNotFound;
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import sun.tools.java.ClassDefinition;
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import sun.tools.java.MemberDefinition;
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/**
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* ImplementationType represents any non-special class which implements
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* one or more interfaces which inherit from java.rmi.Remote.
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* <p>
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* The static forImplementation(...) method must be used to obtain an instance,
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* and will return null if the ClassDefinition is non-conforming.
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*
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* @author Bryan Atsatt
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*/
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public class ImplementationType extends ClassType {
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//_____________________________________________________________________
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// Public Interfaces
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//_____________________________________________________________________
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/**
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* Create an ImplementationType for the given class.
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*
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* If the class is not a properly formed or if some other error occurs, the
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* return value will be null, and errors will have been reported to the
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* supplied BatchEnvironment.
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*/
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public static ImplementationType forImplementation(ClassDefinition classDef,
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ContextStack stack,
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boolean quiet) {
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if (stack.anyErrors()) return null;
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boolean doPop = false;
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ImplementationType result = null;
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try {
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// Do we already have it?
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sun.tools.java.Type theType = classDef.getType();
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Type existing = getType(theType,stack);
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if (existing != null) {
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if (!(existing instanceof ImplementationType)) return null; // False hit.
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// Yep, so return it...
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return (ImplementationType) existing;
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}
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// Could this be an implementation?
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if (couldBeImplementation(quiet,stack,classDef)) {
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// Yes, so check it...
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ImplementationType it = new ImplementationType(stack, classDef);
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putType(theType,it,stack);
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stack.push(it);
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doPop = true;
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if (it.initialize(stack,quiet)) {
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stack.pop(true);
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result = it;
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} else {
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removeType(theType,stack);
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stack.pop(false);
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}
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}
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} catch (CompilerError e) {
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if (doPop) stack.pop(false);
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}
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return result;
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}
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/**
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* Return a string describing this type.
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*/
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public String getTypeDescription () {
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return "Implementation";
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}
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//_____________________________________________________________________
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// Internal Interfaces
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//_____________________________________________________________________
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/**
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* Create a ImplementationType instance for the given class. The resulting
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* object is not yet completely initialized.
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*/
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private ImplementationType(ContextStack stack, ClassDefinition classDef) {
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super(TYPE_IMPLEMENTATION | TM_CLASS | TM_COMPOUND,classDef,stack); // Use special constructor.
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}
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private static boolean couldBeImplementation(boolean quiet, ContextStack stack,
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ClassDefinition classDef) {
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boolean result = false;
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BatchEnvironment env = stack.getEnv();
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try {
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if (!classDef.isClass()) {
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failedConstraint(17,quiet,stack,classDef.getName());
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} else {
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result = env.defRemote.implementedBy(env, classDef.getClassDeclaration());
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if (!result) failedConstraint(8,quiet,stack,classDef.getName());
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}
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} catch (ClassNotFound e) {
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classNotFound(stack,e);
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}
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return result;
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}
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/**
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* Initialize this instance.
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*/
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private boolean initialize (ContextStack stack, boolean quiet) {
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boolean result = false;
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ClassDefinition theClass = getClassDefinition();
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if (initParents(stack)) {
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// Make up our collections...
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Vector directInterfaces = new Vector();
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Vector directMethods = new Vector();
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// Check interfaces...
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try {
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if (addRemoteInterfaces(directInterfaces,true,stack) != null) {
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boolean haveRemote = false;
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// Get methods from all interfaces...
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for (int i = 0; i < directInterfaces.size(); i++) {
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InterfaceType theInt = (InterfaceType) directInterfaces.elementAt(i);
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if (theInt.isType(TYPE_REMOTE) ||
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theInt.isType(TYPE_JAVA_RMI_REMOTE)) {
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haveRemote = true;
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}
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copyRemoteMethods(theInt,directMethods);
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}
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// Make sure we have at least one remote interface...
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if (!haveRemote) {
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failedConstraint(8,quiet,stack,getQualifiedName());
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return false;
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}
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// Now check the methods to ensure we have the
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// correct throws clauses...
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if (checkMethods(theClass,directMethods,stack,quiet)) {
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// We're ok, so pass 'em up...
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result = initialize(directInterfaces,directMethods,null,stack,quiet);
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}
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}
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} catch (ClassNotFound e) {
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classNotFound(stack,e);
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}
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}
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return result;
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}
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private static void copyRemoteMethods(InterfaceType type, Vector list) {
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if (type.isType(TYPE_REMOTE)) {
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// Copy all the unique methods from type...
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Method[] allMethods = type.getMethods();
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for (int i = 0; i < allMethods.length; i++) {
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Method theMethod = allMethods[i];
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if (!list.contains(theMethod)) {
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list.addElement(theMethod);
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}
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}
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// Now recurse thru all inherited interfaces...
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InterfaceType[] allInterfaces = type.getInterfaces();
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for (int i = 0; i < allInterfaces.length; i++) {
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copyRemoteMethods(allInterfaces[i],list);
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}
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}
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}
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// Walk all methods of the class, and for each that is already in
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// the list, call setImplExceptions()...
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private boolean checkMethods(ClassDefinition theClass, Vector list,
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ContextStack stack, boolean quiet) {
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// Convert vector to array...
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Method[] methods = new Method[list.size()];
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list.copyInto(methods);
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for (MemberDefinition member = theClass.getFirstMember();
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member != null;
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member = member.getNextMember()) {
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if (member.isMethod() && !member.isConstructor()
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&& !member.isInitializer()) {
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// It's a method...
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if (!updateExceptions(member,methods,stack,quiet)) {
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return false;
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}
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}
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}
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return true;
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}
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private boolean updateExceptions (MemberDefinition implMethod, Method[] list,
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ContextStack stack, boolean quiet) {
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int length = list.length;
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String implMethodSig = implMethod.toString();
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for (int i = 0; i < length; i++) {
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Method existingMethod = list[i];
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MemberDefinition existing = existingMethod.getMemberDefinition();
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// Do we have a matching method?
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if (implMethodSig.equals(existing.toString())) {
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// Yes, so create exception list...
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try {
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ValueType[] implExcept = getMethodExceptions(implMethod,quiet,stack);
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existingMethod.setImplExceptions(implExcept);
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} catch (Exception e) {
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return false;
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}
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}
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}
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return true;
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}
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}
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