| /* |
| * Copyright (c) 1998, 2011, 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. |
| */ |
| |
| package com.sun.tools.jdi; |
| |
| import com.sun.jdi.*; |
| |
| import java.util.List; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class ArrayTypeImpl extends ReferenceTypeImpl |
| implements ArrayType |
| { |
| protected ArrayTypeImpl(VirtualMachine aVm, long aRef) { |
| super(aVm, aRef); |
| } |
| |
| public ArrayReference newInstance(int length) { |
| try { |
| return (ArrayReference)JDWP.ArrayType.NewInstance. |
| process(vm, this, length).newArray; |
| } catch (JDWPException exc) { |
| throw exc.toJDIException(); |
| } |
| } |
| |
| public String componentSignature() { |
| return signature().substring(1); // Just skip the leading '[' |
| } |
| |
| public String componentTypeName() { |
| JNITypeParser parser = new JNITypeParser(componentSignature()); |
| return parser.typeName(); |
| } |
| |
| Type type() throws ClassNotLoadedException { |
| return findType(componentSignature()); |
| } |
| |
| @Override |
| void addVisibleMethods(Map<String, Method> map, Set<InterfaceType> seenInterfaces) { |
| // arrays don't have methods |
| } |
| |
| public List<Method> allMethods() { |
| return new ArrayList<Method>(0); // arrays don't have methods |
| } |
| |
| /* |
| * Find the type object, if any, of a component type of this array. |
| * The component type does not have to be immediate; e.g. this method |
| * can be used to find the component Foo of Foo[][]. This method takes |
| * advantage of the property that an array and its component must have |
| * the same class loader. Since array set operations don't have an |
| * implicit enclosing type like field and variable set operations, |
| * this method is sometimes needed for proper type checking. |
| */ |
| Type findComponentType(String signature) throws ClassNotLoadedException { |
| byte tag = (byte)signature.charAt(0); |
| if (PacketStream.isObjectTag(tag)) { |
| // It's a reference type |
| JNITypeParser parser = new JNITypeParser(componentSignature()); |
| List<ReferenceType> list = vm.classesByName(parser.typeName()); |
| Iterator<ReferenceType> iter = list.iterator(); |
| while (iter.hasNext()) { |
| ReferenceType type = iter.next(); |
| ClassLoaderReference cl = type.classLoader(); |
| if ((cl == null)? |
| (classLoader() == null) : |
| (cl.equals(classLoader()))) { |
| return type; |
| } |
| } |
| // Component class has not yet been loaded |
| throw new ClassNotLoadedException(componentTypeName()); |
| } else { |
| // It's a primitive type |
| return vm.primitiveTypeMirror(tag); |
| } |
| } |
| |
| public Type componentType() throws ClassNotLoadedException { |
| return findComponentType(componentSignature()); |
| } |
| |
| static boolean isComponentAssignable(Type destination, Type source) { |
| if (source instanceof PrimitiveType) { |
| // Assignment of primitive arrays requires identical |
| // component types. |
| return source.equals(destination); |
| } else { |
| if (destination instanceof PrimitiveType) { |
| return false; |
| } |
| |
| ReferenceTypeImpl refSource = (ReferenceTypeImpl)source; |
| ReferenceTypeImpl refDestination = (ReferenceTypeImpl)destination; |
| // Assignment of object arrays requires availability |
| // of widening conversion of component types |
| return refSource.isAssignableTo(refDestination); |
| } |
| } |
| |
| /* |
| * Return true if an instance of the given reference type |
| * can be assigned to a variable of this type |
| */ |
| boolean isAssignableTo(ReferenceType destType) { |
| if (destType instanceof ArrayType) { |
| try { |
| Type destComponentType = ((ArrayType)destType).componentType(); |
| return isComponentAssignable(destComponentType, componentType()); |
| } catch (ClassNotLoadedException e) { |
| // One or both component types has not yet been |
| // loaded => can't assign |
| return false; |
| } |
| } else if (destType instanceof InterfaceType) { |
| // Only valid InterfaceType assignee is Cloneable |
| return destType.name().equals("java.lang.Cloneable"); |
| } else { |
| // Only valid ClassType assignee is Object |
| return destType.name().equals("java.lang.Object"); |
| } |
| } |
| |
| List<ReferenceType> inheritedTypes() { |
| return new ArrayList<ReferenceType>(0); |
| } |
| |
| void getModifiers() { |
| if (modifiers != -1) { |
| return; |
| } |
| /* |
| * For object arrays, the return values for Interface |
| * Accessible.isPrivate(), Accessible.isProtected(), |
| * etc... are the same as would be returned for the |
| * component type. Fetch the modifier bits from the |
| * component type and use those. |
| * |
| * For primitive arrays, the modifiers are always |
| * VMModifiers.FINAL | VMModifiers.PUBLIC |
| * |
| * Reference com.sun.jdi.Accessible.java. |
| */ |
| try { |
| Type t = componentType(); |
| if (t instanceof PrimitiveType) { |
| modifiers = VMModifiers.FINAL | VMModifiers.PUBLIC; |
| } else { |
| ReferenceType rt = (ReferenceType)t; |
| modifiers = rt.modifiers(); |
| } |
| } catch (ClassNotLoadedException cnle) { |
| cnle.printStackTrace(); |
| } |
| } |
| |
| public String toString() { |
| return "array class " + name() + " (" + loaderString() + ")"; |
| } |
| |
| /* |
| * Save a pointless trip over the wire for these methods |
| * which have undefined results for arrays. |
| */ |
| public boolean isPrepared() { return true; } |
| public boolean isVerified() { return true; } |
| public boolean isInitialized() { return true; } |
| public boolean failedToInitialize() { return false; } |
| public boolean isAbstract() { return false; } |
| |
| /* |
| * Defined always to be true for arrays |
| */ |
| public boolean isFinal() { return true; } |
| |
| /* |
| * Defined always to be false for arrays |
| */ |
| public boolean isStatic() { return false; } |
| } |