| /* |
| * 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.runtime.arrays; |
| |
| import java.util.Arrays; |
| import jdk.nashorn.internal.runtime.JSType; |
| import jdk.nashorn.internal.runtime.ScriptRuntime; |
| |
| /** |
| * Implementation of {@link ArrayData} as soon as a long has been |
| * written to the array |
| */ |
| final class LongArrayData extends ArrayData { |
| /** |
| * The wrapped array |
| */ |
| private long[] array; |
| |
| /** |
| * Constructor |
| * @param array an int array |
| * @param length a length, not necessarily array.length |
| */ |
| LongArrayData(final long array[], final int length) { |
| super(length); |
| assert array.length >= length; |
| this.array = array; |
| } |
| |
| @Override |
| public ArrayData copy() { |
| return new LongArrayData(array.clone(), (int) length()); |
| } |
| |
| @Override |
| public Object[] asObjectArray() { |
| return toObjectArray(array, (int) length()); |
| } |
| |
| private static Object[] toObjectArray(final long[] array, final int length) { |
| assert length <= array.length : "length exceeds internal array size"; |
| final Object[] oarray = new Object[array.length]; |
| |
| for (int index = 0; index < length; index++) { |
| oarray[index] = Long.valueOf(array[index]); |
| } |
| |
| return oarray; |
| } |
| |
| @Override |
| public Object asArrayOfType(final Class<?> componentType) { |
| if(componentType == long.class) { |
| return array.length == length() ? array.clone() : Arrays.copyOf(array, (int) length()); |
| } |
| return super.asArrayOfType(componentType); |
| } |
| |
| private static double[] toDoubleArray(final long[] array, final int length) { |
| assert length <= array.length : "length exceeds internal array size"; |
| final double[] darray = new double[array.length]; |
| |
| for (int index = 0; index < length; index++) { |
| darray[index] = array[index]; |
| } |
| |
| return darray; |
| } |
| |
| @Override |
| public ArrayData convert(final Class<?> type) { |
| if (type == Long.class) { |
| return this; |
| } |
| final int length = (int) length(); |
| if (type == Double.class) { |
| return new NumberArrayData(LongArrayData.toDoubleArray(array, length), length); |
| } |
| return new ObjectArrayData(LongArrayData.toObjectArray(array, length), length); |
| } |
| |
| @Override |
| public void shiftLeft(final int by) { |
| System.arraycopy(array, by, array, 0, array.length - by); |
| } |
| |
| @Override |
| public ArrayData shiftRight(final int by) { |
| final ArrayData newData = ensure(by + length() - 1); |
| if (newData != this) { |
| newData.shiftRight(by); |
| return newData; |
| } |
| System.arraycopy(array, 0, array, by, array.length - by); |
| |
| return this; |
| } |
| |
| @Override |
| public ArrayData ensure(final long safeIndex) { |
| if (safeIndex >= SparseArrayData.MAX_DENSE_LENGTH && safeIndex >= array.length) { |
| return new SparseArrayData(this, safeIndex + 1); |
| } |
| |
| int newLength = array.length; |
| |
| while (newLength <= safeIndex) { |
| newLength = ArrayData.nextSize(newLength); |
| } |
| |
| if (array.length <= safeIndex) { |
| array = Arrays.copyOf(array, newLength); |
| } |
| |
| setLength(safeIndex + 1); |
| |
| return this; |
| } |
| |
| @Override |
| public ArrayData shrink(final long newLength) { |
| Arrays.fill(array, (int) newLength, array.length, 0); |
| |
| return this; |
| } |
| |
| @Override |
| public ArrayData set(final int index, final Object value, final boolean strict) { |
| if (value instanceof Long || value instanceof Integer) { |
| return set(index, ((Number)value).longValue(), strict); |
| } else if (value == ScriptRuntime.UNDEFINED) { |
| return new UndefinedArrayFilter(this).set(index, value, strict); |
| } |
| |
| final ArrayData newData = convert(value == null ? Object.class : value.getClass()); |
| return newData.set(index, value, strict); |
| } |
| |
| @Override |
| public ArrayData set(final int index, final int value, final boolean strict) { |
| array[index] = value; |
| setLength(Math.max(index + 1, length())); |
| return this; |
| } |
| |
| @Override |
| public ArrayData set(final int index, final long value, final boolean strict) { |
| array[index] = value; |
| setLength(Math.max(index + 1, length())); |
| return this; |
| } |
| |
| @Override |
| public ArrayData set(final int index, final double value, final boolean strict) { |
| if (JSType.isRepresentableAsLong(value)) { |
| array[index] = (long)value; |
| setLength(Math.max(index + 1, length())); |
| return this; |
| } |
| return convert(Double.class).set(index, value, strict); |
| } |
| |
| @Override |
| public int getInt(final int index) { |
| return (int)array[index]; |
| } |
| |
| @Override |
| public long getLong(final int index) { |
| return array[index]; |
| } |
| |
| @Override |
| public double getDouble(final int index) { |
| return array[index]; |
| } |
| |
| @Override |
| public Object getObject(final int index) { |
| return array[index]; |
| } |
| |
| @Override |
| public boolean has(final int index) { |
| return 0 <= index && index < length(); |
| } |
| |
| @Override |
| public ArrayData delete(final int index) { |
| return new DeletedRangeArrayFilter(this, index, index); |
| } |
| |
| @Override |
| public ArrayData delete(final long fromIndex, final long toIndex) { |
| return new DeletedRangeArrayFilter(this, fromIndex, toIndex); |
| } |
| |
| @Override |
| public Object pop() { |
| if (length() == 0) { |
| return ScriptRuntime.UNDEFINED; |
| } |
| |
| final int newLength = (int) (length() - 1); |
| final long elem = array[newLength]; |
| array[newLength] = 0; |
| setLength(newLength); |
| |
| return elem; |
| } |
| |
| @Override |
| public ArrayData slice(final long from, final long to) { |
| final long start = from < 0 ? (from + length()) : from; |
| final long newLength = to - start; |
| return new LongArrayData(Arrays.copyOfRange(array, (int)from, (int)to), (int)newLength); |
| } |
| } |