diff options
Diffstat (limited to 'src/jdk/nashorn/internal/objects/NativeUint8Array.java')
| -rw-r--r-- | src/jdk/nashorn/internal/objects/NativeUint8Array.java | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/src/jdk/nashorn/internal/objects/NativeUint8Array.java b/src/jdk/nashorn/internal/objects/NativeUint8Array.java deleted file mode 100644 index 5f76f8f0..00000000 --- a/src/jdk/nashorn/internal/objects/NativeUint8Array.java +++ /dev/null @@ -1,237 +0,0 @@ -/* - * Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.objects; - -import static jdk.nashorn.internal.codegen.CompilerConstants.specialCall; - -import java.lang.invoke.MethodHandle; -import java.lang.invoke.MethodHandles; -import java.nio.ByteBuffer; -import jdk.nashorn.internal.objects.annotations.Attribute; -import jdk.nashorn.internal.objects.annotations.Constructor; -import jdk.nashorn.internal.objects.annotations.Function; -import jdk.nashorn.internal.objects.annotations.Property; -import jdk.nashorn.internal.objects.annotations.ScriptClass; -import jdk.nashorn.internal.objects.annotations.Where; -import jdk.nashorn.internal.runtime.JSType; -import jdk.nashorn.internal.runtime.PropertyMap; -import jdk.nashorn.internal.runtime.ScriptObject; -import jdk.nashorn.internal.runtime.arrays.ArrayData; -import jdk.nashorn.internal.runtime.arrays.TypedArrayData; - -/** - * Uint8 array for TypedArray extension - */ -@ScriptClass("Uint8Array") -public final class NativeUint8Array extends ArrayBufferView { - - /** - * The size in bytes of each element in the array. - */ - @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR) - public static final int BYTES_PER_ELEMENT = 1; - - // initialized by nasgen - @SuppressWarnings("unused") - private static PropertyMap $nasgenmap$; - - private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) { - @Override - public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) { - return new NativeUint8Array(buffer, byteOffset, length); - } - - @Override - public Uint8ArrayData createArrayData(final ByteBuffer nb, final int start, final int end) { - return new Uint8ArrayData(nb, start, end); - } - - @Override - public String getClassName() { - return "Uint8Array"; - } - }; - - private static final class Uint8ArrayData extends TypedArrayData<ByteBuffer> { - - private static final MethodHandle GET_ELEM = specialCall(MethodHandles.lookup(), Uint8ArrayData.class, "getElem", int.class, int.class).methodHandle(); - private static final MethodHandle SET_ELEM = specialCall(MethodHandles.lookup(), Uint8ArrayData.class, "setElem", void.class, int.class, int.class).methodHandle(); - - private Uint8ArrayData(final ByteBuffer nb, final int start, final int end) { - super(((ByteBuffer)nb.position(start).limit(end)).slice(), end - start); - } - - @Override - protected MethodHandle getGetElem() { - return GET_ELEM; - } - - @Override - protected MethodHandle getSetElem() { - return SET_ELEM; - } - - private int getElem(final int index) { - try { - return nb.get(index) & 0xff; - } catch (final IndexOutOfBoundsException e) { - throw new ClassCastException(); //force relink - this works for unoptimistic too - } - } - - private void setElem(final int index, final int elem) { - try { - if (index < nb.limit()) { - nb.put(index, (byte) elem); - } - } catch (final IndexOutOfBoundsException e) { - throw new ClassCastException(); - } - } - - @Override - public boolean isUnsigned() { - return true; - } - - @Override - public Class<?> getElementType() { - return int.class; - } - - @Override - public Class<?> getBoxedElementType() { - return Integer.class; - } - - @Override - public int getInt(final int index) { - return getElem(index); - } - - @Override - public int getIntOptimistic(final int index, final int programPoint) { - return getElem(index); - } - - @Override - public double getDouble(final int index) { - return getInt(index); - } - - @Override - public double getDoubleOptimistic(final int index, final int programPoint) { - return getElem(index); - } - - @Override - public Object getObject(final int index) { - return getInt(index); - } - - @Override - public ArrayData set(final int index, final Object value, final boolean strict) { - return set(index, JSType.toInt32(value), strict); - } - - @Override - public ArrayData set(final int index, final int value, final boolean strict) { - setElem(index, value); - return this; - } - - @Override - public ArrayData set(final int index, final double value, final boolean strict) { - return set(index, (int)value, strict); - } - - } - - /** - * Constructor - * - * @param newObj is this typed array instantiated with the new operator - * @param self self reference - * @param args args - * - * @return new typed array - */ - @Constructor(arity = 1) - public static NativeUint8Array constructor(final boolean newObj, final Object self, final Object... args) { - return (NativeUint8Array)constructorImpl(newObj, args, FACTORY); - } - - NativeUint8Array(final NativeArrayBuffer buffer, final int byteOffset, final int length) { - super(buffer, byteOffset, length); - } - - @Override - protected Factory factory() { - return FACTORY; - } - - /** - * Set values - * @param self self reference - * @param array multiple values of array's type to set - * @param offset optional start index, interpreted 0 if undefined - * @return undefined - */ - @Function(attributes = Attribute.NOT_ENUMERABLE) - protected static Object set(final Object self, final Object array, final Object offset) { - return ArrayBufferView.setImpl(self, array, offset); - } - - /** - * Returns a new TypedArray view of the ArrayBuffer store for this TypedArray, - * referencing the elements at begin, inclusive, up to end, exclusive. If either - * begin or end is negative, it refers to an index from the end of the array, - * as opposed to from the beginning. - * <p> - * If end is unspecified, the subarray contains all elements from begin to the end - * of the TypedArray. The range specified by the begin and end values is clamped to - * the valid index range for the current array. If the computed length of the new - * TypedArray would be negative, it is clamped to zero. - * <p> - * The returned TypedArray will be of the same type as the array on which this - * method is invoked. - * - * @param self self reference - * @param begin begin position - * @param end end position - * - * @return sub array - */ - @Function(attributes = Attribute.NOT_ENUMERABLE) - protected static NativeUint8Array subarray(final Object self, final Object begin, final Object end) { - return (NativeUint8Array)ArrayBufferView.subarrayImpl(self, begin, end); - } - - @Override - protected ScriptObject getPrototype(final Global global) { - return global.getUint8ArrayPrototype(); - } -} |