J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-1999 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.tools.jdi; |
| 27 | |
| 28 | import com.sun.jdi.*; |
| 29 | |
| 30 | import java.util.List; |
| 31 | import java.util.ArrayList; |
| 32 | import java.util.Map; |
| 33 | import java.util.Iterator; |
| 34 | import java.util.Collections; |
| 35 | import java.lang.ref.SoftReference; |
| 36 | |
| 37 | public class InterfaceTypeImpl extends ReferenceTypeImpl |
| 38 | implements InterfaceType { |
| 39 | |
| 40 | private SoftReference<List<InterfaceType>> superinterfacesRef = null; |
| 41 | |
| 42 | protected InterfaceTypeImpl(VirtualMachine aVm,long aRef) { |
| 43 | super(aVm, aRef); |
| 44 | } |
| 45 | |
| 46 | public List<InterfaceType> superinterfaces() { |
| 47 | List<InterfaceType> superinterfaces = (superinterfacesRef == null) ? null : |
| 48 | superinterfacesRef.get(); |
| 49 | if (superinterfaces == null) { |
| 50 | superinterfaces = getInterfaces(); |
| 51 | superinterfaces = Collections.unmodifiableList(superinterfaces); |
| 52 | superinterfacesRef = new SoftReference<List<InterfaceType>>(superinterfaces); |
| 53 | } |
| 54 | return superinterfaces; |
| 55 | } |
| 56 | |
| 57 | public List<InterfaceType> subinterfaces() { |
| 58 | List<InterfaceType> subs = new ArrayList<InterfaceType>(); |
| 59 | for (ReferenceType refType : vm.allClasses()) { |
| 60 | if (refType instanceof InterfaceType) { |
| 61 | InterfaceType interfaze = (InterfaceType)refType; |
| 62 | if (interfaze.isPrepared() && interfaze.superinterfaces().contains(this)) { |
| 63 | subs.add(interfaze); |
| 64 | } |
| 65 | } |
| 66 | } |
| 67 | return subs; |
| 68 | } |
| 69 | |
| 70 | public List<ClassType> implementors() { |
| 71 | List<ClassType> implementors = new ArrayList<ClassType>(); |
| 72 | for (ReferenceType refType : vm.allClasses()) { |
| 73 | if (refType instanceof ClassType) { |
| 74 | ClassType clazz = (ClassType)refType; |
| 75 | if (clazz.isPrepared() && clazz.interfaces().contains(this)) { |
| 76 | implementors.add(clazz); |
| 77 | } |
| 78 | } |
| 79 | } |
| 80 | return implementors; |
| 81 | } |
| 82 | |
| 83 | void addVisibleMethods(Map<String, Method> methodMap) { |
| 84 | /* |
| 85 | * Add methods from |
| 86 | * parent types first, so that the methods in this class will |
| 87 | * overwrite them in the hash table |
| 88 | */ |
| 89 | |
| 90 | for (InterfaceType interfaze : superinterfaces()) { |
| 91 | ((InterfaceTypeImpl)interfaze).addVisibleMethods(methodMap); |
| 92 | } |
| 93 | |
| 94 | addToMethodMap(methodMap, methods()); |
| 95 | } |
| 96 | |
| 97 | public List<Method> allMethods() { |
| 98 | ArrayList<Method> list = new ArrayList<Method>(methods()); |
| 99 | |
| 100 | /* |
| 101 | * It's more efficient if don't do this |
| 102 | * recursively. |
| 103 | */ |
| 104 | for (InterfaceType interfaze : allSuperinterfaces()) { |
| 105 | list.addAll(interfaze.methods()); |
| 106 | } |
| 107 | |
| 108 | return list; |
| 109 | } |
| 110 | |
| 111 | List<InterfaceType> allSuperinterfaces() { |
| 112 | ArrayList<InterfaceType> list = new ArrayList<InterfaceType>(); |
| 113 | addSuperinterfaces(list); |
| 114 | return list; |
| 115 | } |
| 116 | |
| 117 | void addSuperinterfaces(List<InterfaceType> list) { |
| 118 | /* |
| 119 | * This code is a little strange because it |
| 120 | * builds the list with a more suitable order than the |
| 121 | * depth-first approach a normal recursive solution would |
| 122 | * take. Instead, all direct superinterfaces precede all |
| 123 | * indirect ones. |
| 124 | */ |
| 125 | |
| 126 | /* |
| 127 | * Get a list of direct superinterfaces that's not already in the |
| 128 | * list being built. |
| 129 | */ |
| 130 | List<InterfaceType> immediate = new ArrayList<InterfaceType>(superinterfaces()); |
| 131 | Iterator iter = immediate.iterator(); |
| 132 | while (iter.hasNext()) { |
| 133 | InterfaceType interfaze = (InterfaceType)iter.next(); |
| 134 | if (list.contains(interfaze)) { |
| 135 | iter.remove(); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | /* |
| 140 | * Add all new direct superinterfaces |
| 141 | */ |
| 142 | list.addAll(immediate); |
| 143 | |
| 144 | /* |
| 145 | * Recurse for all new direct superinterfaces. |
| 146 | */ |
| 147 | iter = immediate.iterator(); |
| 148 | while (iter.hasNext()) { |
| 149 | InterfaceTypeImpl interfaze = (InterfaceTypeImpl)iter.next(); |
| 150 | interfaze.addSuperinterfaces(list); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | boolean isAssignableTo(ReferenceType type) { |
| 155 | |
| 156 | // Exact match? |
| 157 | if (this.equals(type)) { |
| 158 | return true; |
| 159 | } else { |
| 160 | // Try superinterfaces. |
| 161 | for (InterfaceType interfaze : superinterfaces()) { |
| 162 | if (((InterfaceTypeImpl)interfaze).isAssignableTo(type)) { |
| 163 | return true; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | return false; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | List<InterfaceType> inheritedTypes() { |
| 172 | return superinterfaces(); |
| 173 | } |
| 174 | |
| 175 | public boolean isInitialized() { |
| 176 | return isPrepared(); |
| 177 | } |
| 178 | |
| 179 | public String toString() { |
| 180 | return "interface " + name() + " (" + loaderString() + ")"; |
| 181 | } |
| 182 | } |