/*
* Copyright (c) 2007, 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.
*
* 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.max.vm.layout.hosted;
import com.sun.max.annotate.*;
import com.sun.max.program.*;
import com.sun.max.unsafe.*;
import com.sun.max.vm.layout.*;
import com.sun.max.vm.layout.Layout.HeaderField;
import com.sun.max.vm.object.*;
import com.sun.max.vm.reference.*;
import com.sun.max.vm.type.*;
import com.sun.max.vm.value.*;
/**
*/
public class HostedArrayLayout extends HostedGeneralLayout implements ArrayLayout {
public final Kind elementKind;
public HostedArrayLayout(Kind elementKind) {
this.elementKind = elementKind;
}
@Override
public boolean isArrayLayout() {
return true;
}
@INLINE
public final Size getArraySize(Kind kind, int length) {
throw ProgramError.unexpected("cannot compute array size in prototype layout");
}
@INLINE
public final int headerSize() {
throw ProgramError.unexpected();
}
public HeaderField[] headerFields() {
throw ProgramError.unexpected();
}
public Kind getElementKind(Accessor accessor) {
return ObjectAccess.readHub(accessor).classActor.componentClassActor().kind;
}
public int arrayLengthOffset() {
throw ProgramError.unexpected("cannot get array length offset in prototype layout");
}
public int readLength(Accessor accessor) {
final Reference reference = (Reference) accessor;
return ArrayAccess.readArrayLength(reference.toJava());
}
public void writeLength(Accessor accessor, int length) {
throw ProgramError.unexpected();
}
@INLINE
public final int cellDataOffset() {
throw ProgramError.unexpected();
}
public Kind elementKind() {
return elementKind;
}
public Layout.Category category() {
return Layout.Category.ARRAY;
}
@Override
public final boolean isReferenceArrayLayout() {
final Kind rawKind = elementKind;
return rawKind.isReference;
}
public Offset getElementOffsetFromOrigin(int index) {
throw ProgramError.unexpected("cannot compute cell offset in prototype layout");
}
public Offset getElementOffsetInCell(int index) {
throw ProgramError.unexpected("cannot compute cell offset in prototype layout");
}
public int getElementSize() {
return elementKind().width.numberOfBytes;
}
public Size getHeaderSize() {
throw ProgramError.unexpected();
}
public Offset getElementOffset(int index) {
return Offset.fromInt(index * getElementSize());
}
public Size getArraySize(int length) {
throw ProgramError.unexpected();
}
public Size specificSize(Accessor accessor) {
throw ProgramError.unexpected();
}
public Value readValue(Kind kind, ObjectMirror mirror, int offset) {
throw ProgramError.unexpected();
}
public void writeValue(Kind kind, ObjectMirror mirror, int offset, Value value) {
assert kind == value.kind();
throw ProgramError.unexpected();
}
public void copyElements(Accessor src, int srcIndex, Object dst, int dstIndex, int length) {
throw ProgramError.unexpected();
}
@INLINE public final boolean getBoolean(Accessor accessor, int index) { return accessor.getBoolean(0, index); }
@INLINE public final byte getByte(Accessor accessor, int index) { return accessor.getByte(0, index); }
@INLINE public final char getChar(Accessor accessor, int index) { return accessor.getChar(0, index); }
@INLINE public final short getShort(Accessor accessor, int index) { return accessor.getShort(0, index); }
@INLINE public final int getInt(Accessor accessor, int index) { return accessor.getInt(0, index); }
@INLINE public final float getFloat(Accessor accessor, int index) { return accessor.getFloat(0, index); }
@INLINE public final long getLong(Accessor accessor, int index) { return accessor.getLong(0, index); }
@INLINE public final double getDouble(Accessor accessor, int index) { return accessor.getDouble(0, index); }
@INLINE public final Word getWord(Accessor accessor, int index) { return accessor.getWord(0, index); }
@INLINE public final Reference getReference(Accessor accessor, int index) { return accessor.getReference(0, index); }
@INLINE public final void setBoolean(Accessor accessor, int index, boolean value) { accessor.setBoolean(0, index, value); }
@INLINE public final void setByte(Accessor accessor, int index, byte value) { accessor.setByte(0, index, value); }
@INLINE public final void setChar(Accessor accessor, int index, char value) { accessor.setChar(0, index, value); }
@INLINE public final void setShort(Accessor accessor, int index, short value) { accessor.setShort(0, index, value); }
@INLINE public final void setInt(Accessor accessor, int index, int value) { accessor.setInt(0, index, value); }
@INLINE public final void setFloat(Accessor accessor, int index, float value) { accessor.setFloat(0, index, value); }
@INLINE public final void setLong(Accessor accessor, int index, long value) { accessor.setLong(0, index, value); }
@INLINE public final void setDouble(Accessor accessor, int index, double value) { accessor.setDouble(0, index, value); }
@INLINE public final void setWord(Accessor accessor, int index, Word value) { accessor.setWord(0, index, value); }
@INLINE public final void setReference(Accessor accessor, int index, Reference element) { accessor.setReference(0, index, element); }
}