/* * Copyright (c) 1998, 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. 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.Arrays;import java.util.Iterator; public class ArrayReferenceImpl extends ObjectReferenceImpl implements ArrayReference{ int length = -1; ArrayReferenceImpl(VirtualMachine aVm,long aRef) { super(aVm,aRef); } protected ClassTypeImpl invokableReferenceType(Method method) { // The method has to be a method on Object since // arrays don't have methods nor any other 'superclasses' // So, use the ClassTypeImpl for Object instead of // the ArrayTypeImpl for the array itself. return (ClassTypeImpl)method.declaringType(); } ArrayTypeImpl arrayType() { return (ArrayTypeImpl)type(); } /** * Return array length. * Need not be synchronized since it cannot be provably stale. */ public int length() { if(length == -1) { try { length = JDWP.ArrayReference.Length. process(vm, this).arrayLength; } catch (JDWPException exc) { throw exc.toJDIException(); } } return length; } public Value getValue(int index) { List list = getValues(index, 1); return (Value)list.get(0); } public List<Value> getValues() { return getValues(0, -1); } /** * Validate that the range to set/get is valid. * length of -1 (meaning rest of array) has been converted * before entry. */ private void validateArrayAccess(int index, int length) { // because length can be computed from index, // index must be tested first for correct error message if ((index < 0) || (index > length())) { throw new IndexOutOfBoundsException( "Invalid array index: " + index); } if (length < 0) { throw new IndexOutOfBoundsException( "Invalid array range length: " + length); } if (index + length > length()) { throw new IndexOutOfBoundsException( "Invalid array range: " + index + " to " + (index + length - 1)); } } @SuppressWarnings("unchecked") private static <T> T cast(Object x) { return (T)x; } public List<Value> getValues(int index, int length) { if (length == -1) { // -1 means the rest of the array length = length() - index; } validateArrayAccess(index, length); if (length == 0) { return new ArrayList<Value>(); } List<Value> vals; try { vals = cast(JDWP.ArrayReference.GetValues.process(vm, this, index, length).values); } catch (JDWPException exc) { throw exc.toJDIException(); } return vals; } public void setValue(int index, Value value) throws InvalidTypeException, ClassNotLoadedException { List<Value> list = new ArrayList<Value>(1); list.add(value); setValues(index, list, 0, 1); } public void setValues(List<? extends Value> values) throws InvalidTypeException, ClassNotLoadedException { setValues(0, values, 0, -1); } public void setValues(int index, List<? extends Value> values, int srcIndex, int length) throws InvalidTypeException, ClassNotLoadedException { if (length == -1) { // -1 means the rest of the array // shorter of, the rest of the array and rest of // the source values length = Math.min(length() - index, values.size() - srcIndex); } validateMirrorsOrNulls(values); validateArrayAccess(index, length); if ((srcIndex < 0) || (srcIndex > values.size())) { throw new IndexOutOfBoundsException( "Invalid source index: " + srcIndex); } if (srcIndex + length > values.size()) { throw new IndexOutOfBoundsException( "Invalid source range: " + srcIndex + " to " + (srcIndex + length - 1)); } boolean somethingToSet = false;; ValueImpl[] setValues = new ValueImpl[length]; for (int i = 0; i < length; i++) { ValueImpl value = (ValueImpl)values.get(srcIndex + i); try { // Validate and convert if necessary setValues[i] = ValueImpl.prepareForAssignment(value, new Component()); somethingToSet = true; } catch (ClassNotLoadedException e) { /* * Since we got this exception, * the component must be a reference type. * This means the class has not yet been loaded * through the defining class's class loader. * If the value we're trying to set is null, * then setting to null is essentially a * no-op, and we should allow it without an * exception. */ if (value != null) { throw e; } } } if (somethingToSet) { try { JDWP.ArrayReference.SetValues. process(vm, this, index, setValues); } catch (JDWPException exc) { throw exc.toJDIException(); } } } public String toString() { return "instance of " + arrayType().componentTypeName() + "[" + length() + "] (id=" + uniqueID() + ")"; } byte typeValueKey() { return JDWP.Tag.ARRAY; } void validateAssignment(ValueContainer destination) throws InvalidTypeException, ClassNotLoadedException { try { super.validateAssignment(destination); } catch (ClassNotLoadedException e) { /* * An array can be used extensively without the * enclosing loader being recorded by the VM as an * initiating loader of the array type. In addition, the * load of an array class is fairly harmless as long as * the component class is already loaded. So we relax the * rules a bit and allow the assignment as long as the * ultimate component types are assignable. */ boolean valid = false; JNITypeParser destParser = new JNITypeParser( destination.signature()); JNITypeParser srcParser = new JNITypeParser( arrayType().signature()); int destDims = destParser.dimensionCount(); if (destDims <= srcParser.dimensionCount()) { /* * Remove all dimensions from the destination. Remove * the same number of dimensions from the source. * Get types for both and check to see if they are * compatible. */ String destComponentSignature = destParser.componentSignature(destDims); Type destComponentType = destination.findType(destComponentSignature); String srcComponentSignature = srcParser.componentSignature(destDims); Type srcComponentType = arrayType().findComponentType(srcComponentSignature); valid = ArrayTypeImpl.isComponentAssignable(destComponentType, srcComponentType); } if (!valid) { throw new InvalidTypeException("Cannot assign " + arrayType().name() + " to " + destination.typeName()); } } } /* * Represents an array component to other internal parts of this * implementation. This is not exposed at the JDI level. Currently, * this class is needed only for type checking so it does not even * reference a particular component - just a generic component * of this array. In the future we may need to expand its use. */ class Component implements ValueContainer { public Type type() throws ClassNotLoadedException { return arrayType().componentType(); } public String typeName() { return arrayType().componentTypeName(); } public String signature() { return arrayType().componentSignature(); } public Type findType(String signature) throws ClassNotLoadedException { return arrayType().findComponentType(signature); } }}
/*
* Copyright (c) 1998, 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. 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.Arrays;
import java.util.Iterator;
public class ArrayReferenceImpl extends ObjectReferenceImpl
implements ArrayReference
{
int length = -1;
ArrayReferenceImpl(VirtualMachine aVm,long aRef) {
super(aVm,aRef);
}
protected ClassTypeImpl invokableReferenceType(Method method) {
// The method has to be a method on Object since
// arrays don't have methods nor any other 'superclasses'
// So, use the ClassTypeImpl for Object instead of
// the ArrayTypeImpl for the array itself.
return (ClassTypeImpl)method.declaringType();
}
ArrayTypeImpl arrayType() {
return (ArrayTypeImpl)type();
}
/**
* Return array length.
* Need not be synchronized since it cannot be provably stale.
*/
public int length() {
if(length == -1) {
try {
length = JDWP.ArrayReference.Length.
process(vm, this).arrayLength;
} catch (JDWPException exc) {
throw exc.toJDIException();
}
}
return length;
}
public Value getValue(int index) {
List list = getValues(index, 1);
return (Value)list.get(0);
}
public List<Value> getValues() {
return getValues(0, -1);
}
/**
* Validate that the range to set/get is valid.
* length of -1 (meaning rest of array) has been converted
* before entry.
*/
private void validateArrayAccess(int index, int length) {
// because length can be computed from index,
// index must be tested first for correct error message
if ((index < 0) || (index > length())) {
throw new IndexOutOfBoundsException(
"Invalid array index: " + index);
}
if (length < 0) {
throw new IndexOutOfBoundsException(
"Invalid array range length: " + length);
}
if (index + length > length()) {
throw new IndexOutOfBoundsException(
"Invalid array range: " +
index + " to " + (index + length - 1));
}
}
@SuppressWarnings("unchecked")
private static <T> T cast(Object x) {
return (T)x;
}
public List<Value> getValues(int index, int length) {
if (length == -1) { // -1 means the rest of the array
length = length() - index;
}
validateArrayAccess(index, length);
if (length == 0) {
return new ArrayList<Value>();
}
List<Value> vals;
try {
vals = cast(JDWP.ArrayReference.GetValues.process(vm, this, index, length).values);
} catch (JDWPException exc) {
throw exc.toJDIException();
}
return vals;
}
public void setValue(int index, Value value)
throws InvalidTypeException,
ClassNotLoadedException {
List<Value> list = new ArrayList<Value>(1);
list.add(value);
setValues(index, list, 0, 1);
}
public void setValues(List<? extends Value> values)
throws InvalidTypeException,
ClassNotLoadedException {
setValues(0, values, 0, -1);
}
public void setValues(int index, List<? extends Value> values,
int srcIndex, int length)
throws InvalidTypeException,
ClassNotLoadedException {
if (length == -1) { // -1 means the rest of the array
// shorter of, the rest of the array and rest of
// the source values
length = Math.min(length() - index,
values.size() - srcIndex);
}
validateMirrorsOrNulls(values);
validateArrayAccess(index, length);
if ((srcIndex < 0) || (srcIndex > values.size())) {
throw new IndexOutOfBoundsException(
"Invalid source index: " + srcIndex);
}
if (srcIndex + length > values.size()) {
throw new IndexOutOfBoundsException(
"Invalid source range: " +
srcIndex + " to " +
(srcIndex + length - 1));
}
boolean somethingToSet = false;;
ValueImpl[] setValues = new ValueImpl[length];
for (int i = 0; i < length; i++) {
ValueImpl value = (ValueImpl)values.get(srcIndex + i);
try {
// Validate and convert if necessary
setValues[i] =
ValueImpl.prepareForAssignment(value,
new Component());
somethingToSet = true;
} catch (ClassNotLoadedException e) {
/*
* Since we got this exception,
* the component must be a reference type.
* This means the class has not yet been loaded
* through the defining class's class loader.
* If the value we're trying to set is null,
* then setting to null is essentially a
* no-op, and we should allow it without an
* exception.
*/
if (value != null) {
throw e;
}
}
}
if (somethingToSet) {
try {
JDWP.ArrayReference.SetValues.
process(vm, this, index, setValues);
} catch (JDWPException exc) {
throw exc.toJDIException();
}
}
}
public String toString() {
return "instance of " + arrayType().componentTypeName() +
"[" + length() + "] (id=" + uniqueID() + ")";
}
byte typeValueKey() {
return JDWP.Tag.ARRAY;
}
void validateAssignment(ValueContainer destination)
throws InvalidTypeException, ClassNotLoadedException {
try {
super.validateAssignment(destination);
} catch (ClassNotLoadedException e) {
/*
* An array can be used extensively without the
* enclosing loader being recorded by the VM as an
* initiating loader of the array type. In addition, the
* load of an array class is fairly harmless as long as
* the component class is already loaded. So we relax the
* rules a bit and allow the assignment as long as the
* ultimate component types are assignable.
*/
boolean valid = false;
JNITypeParser destParser = new JNITypeParser(
destination.signature());
JNITypeParser srcParser = new JNITypeParser(
arrayType().signature());
int destDims = destParser.dimensionCount();
if (destDims <= srcParser.dimensionCount()) {
/*
* Remove all dimensions from the destination. Remove
* the same number of dimensions from the source.
* Get types for both and check to see if they are
* compatible.
*/
String destComponentSignature =
destParser.componentSignature(destDims);
Type destComponentType =
destination.findType(destComponentSignature);
String srcComponentSignature =
srcParser.componentSignature(destDims);
Type srcComponentType =
arrayType().findComponentType(srcComponentSignature);
valid = ArrayTypeImpl.isComponentAssignable(destComponentType,
srcComponentType);
}
if (!valid) {
throw new InvalidTypeException("Cannot assign " +
arrayType().name() +
" to " +
destination.typeName());
}
}
}
/*
* Represents an array component to other internal parts of this
* implementation. This is not exposed at the JDI level. Currently,
* this class is needed only for type checking so it does not even
* reference a particular component - just a generic component
* of this array. In the future we may need to expand its use.
*/
class Component implements ValueContainer {
public Type type() throws ClassNotLoadedException {
return arrayType().componentType();
}
public String typeName() {
return arrayType().componentTypeName();
}
public String signature() {
return arrayType().componentSignature();
}
public Type findType(String signature) throws ClassNotLoadedException {
return arrayType().findComponentType(signature);
}
}
}