| /* |
| * Copyright (c) 2002, 2004, 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. |
| * |
| * 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 sun.jvm.hotspot.jdi; |
| |
| import com.sun.jdi.*; |
| |
| import sun.jvm.hotspot.oops.ArrayKlass; |
| import sun.jvm.hotspot.oops.InstanceKlass; |
| import sun.jvm.hotspot.oops.ObjArrayKlass; |
| import sun.jvm.hotspot.oops.TypeArrayKlass; |
| import sun.jvm.hotspot.oops.Klass; |
| import sun.jvm.hotspot.oops.Instance; |
| import sun.jvm.hotspot.oops.Symbol; |
| import java.util.List; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| public class ArrayTypeImpl extends ReferenceTypeImpl implements ArrayType { |
| protected ArrayTypeImpl(VirtualMachine aVm, ArrayKlass aRef) { |
| super(aVm, aRef); |
| } |
| |
| public ArrayReference newInstance(int length) { |
| vm.throwNotReadOnlyException("ArrayType.newInstance(int)"); |
| return null; |
| } |
| |
| public String componentSignature() { |
| return signature().substring(1); // Just skip the leading '[' |
| } |
| |
| public String componentTypeName() { |
| JNITypeParser parser = new JNITypeParser(componentSignature()); |
| return parser.typeName(); |
| } |
| |
| public ClassLoaderReference classLoader() { |
| if (ref() instanceof TypeArrayKlass) { |
| // primitive array klasses are loaded by bootstrap loader |
| return null; |
| } else { |
| Klass bottomKlass = ((ObjArrayKlass)ref()).getBottomKlass(); |
| if (bottomKlass instanceof TypeArrayKlass) { |
| // multidimensional primitive array klasses are loaded by bootstrap loader |
| return null; |
| } else { |
| // class loader of any other obj array klass is same as the loader |
| // that loaded the bottom InstanceKlass |
| Instance xx = (Instance)(((InstanceKlass) bottomKlass).getClassLoader()); |
| return vm.classLoaderMirror(xx); |
| } |
| } |
| } |
| |
| void addVisibleMethods(Map methodMap) { |
| // arrays don't have methods |
| } |
| |
| List getAllMethods() { |
| // arrays don't have methods |
| // JLS says arrays have methods of java.lang.Object. But |
| // JVMDI-JDI returns zero size list. We do the same here |
| // for consistency. |
| return new ArrayList(0); |
| } |
| |
| /* |
| * 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[][]. |
| */ |
| public Type componentType() throws ClassNotLoadedException { |
| ArrayKlass k = (ArrayKlass) ref(); |
| if (k instanceof ObjArrayKlass) { |
| Klass elementKlass = ((ObjArrayKlass)k).getElementKlass(); |
| if (elementKlass == null) { |
| throw new ClassNotLoadedException(componentSignature()); |
| } else { |
| return vm.referenceType(elementKlass); |
| } |
| } else { |
| // It's a primitive type |
| return vm.primitiveTypeMirror(signature().charAt(1)); |
| } |
| } |
| |
| 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 { |
| Symbol typeName = ((ReferenceTypeImpl)destType).typeNameAsSymbol(); |
| if (destType instanceof InterfaceType) { |
| // Every array type implements java.io.Serializable and |
| // java.lang.Cloneable. fixme in JVMDI-JDI, includes only |
| // Cloneable but not Serializable. |
| return typeName.equals(vm.javaLangCloneable()) || |
| typeName.equals(vm.javaIoSerializable()); |
| } else { |
| // Only valid ClassType assignee is Object |
| return typeName.equals(vm.javaLangObject()); |
| } |
| } |
| } |
| |
| List inheritedTypes() { |
| // arrays are derived from java.lang.Object and |
| // B[] is derived from A[] if B is derived from A. |
| // But JVMDI-JDI returns zero sized list and we do the |
| // same for consistency. |
| return new ArrayList(0); |
| } |
| |
| int getModifiers() { |
| /* |
| * 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) { |
| return VMModifiers.FINAL | VMModifiers.PUBLIC; |
| } else { |
| ReferenceType rt = (ReferenceType)t; |
| return rt.modifiers(); |
| } |
| } catch (ClassNotLoadedException cnle) { |
| cnle.printStackTrace(); |
| } |
| return -1; |
| } |
| |
| 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; } |
| } |