jdk8-mips64-public/nashorn: src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java@f8da39d33117 (annotated)

src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java@f8da39d33117 (annotated)

src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java

Thu, 05 Feb 2015 14:47:28 +0100

author: hannesw
date: Thu, 05 Feb 2015 14:47:28 +0100
changeset 1229: f8da39d33117
parent 1220: a95fa1375c4e
child 1374: 2937f5b9e985
permissions: -rw-r--r--

8068872: Nashorn JSON.parse drops numeric keys
Reviewed-by: attila, lagergren

 /*
  * 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 static jdk.nashorn.internal.codegen.CompilerConstants.specialCall;
 import static jdk.nashorn.internal.lookup.Lookup.MH;
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
 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 ContinuousArrayData implements IntOrLongElements {
     /**
      * 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 final Class<?> getElementType() {
         return long.class;
     }
     @Override
     public final Class<?> getBoxedElementType() {
         return Long.class;
     }
     @Override
     public final ContinuousArrayData widest(final ContinuousArrayData otherData) {
         return otherData instanceof IntElements ? this : otherData;
     }
     @Override
     public final int getElementWeight() {
         return 2;
     }
     @Override
     public LongArrayData copy() {
         return new LongArrayData(array.clone(), (int)length());
     }
     @Override
     public Object[] asObjectArray() {
         return toObjectArray(true);
     }
     private Object[] toObjectArray(final boolean trim) {
         assert length() <= array.length : "length exceeds internal array size";
         final int len = (int)length();
         final Object[] oarray = new Object[trim ? len : array.length];
         for (int index = 0; index < len; index++) {
             oarray[index] = Long.valueOf(array[index]);
         }
         return oarray;
     }
     @Override
     public Object asArrayOfType(final Class<?> componentType) {
         if (componentType == long.class) {
             final int len = (int)length();
             return array.length == len ? array.clone() : Arrays.copyOf(array, len);
         }
         return super.asArrayOfType(componentType);
     }
     private double[] toDoubleArray() {
         assert length() <= array.length : "length exceeds internal array size";
         final int len = (int)length();
         final double[] darray = new double[array.length];
         for (int index = 0; index < len; index++) {
             darray[index] = array[index];
         }
         return darray;
     }
     @Override
     public ContinuousArrayData convert(final Class<?> type) {
         if (type == Integer.class || type == Long.class) {
             return this;
         }
         final int len = (int)length();
         if (type == Double.class) {
             return new NumberArrayData(toDoubleArray(), len);
         }
         return new ObjectArrayData(toObjectArray(false), len);
     }
     @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) {
             return new SparseArrayData(this, safeIndex + 1);
         }
         final int alen = array.length;
         if (safeIndex >= alen) {
             final int newLength = ArrayData.nextSize((int)safeIndex);
             array = Arrays.copyOf(array, newLength);
         }
         if (safeIndex >= length()) {
             setLength(safeIndex + 1);
         }
         return this;
     }
     @Override
     public ArrayData shrink(final long newLength) {
         Arrays.fill(array, (int)newLength, array.length, 0L);
         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);
     }
     private static final MethodHandle HAS_GET_ELEM = specialCall(MethodHandles.lookup(), LongArrayData.class, "getElem", long.class, int.class).methodHandle();
     private static final MethodHandle SET_ELEM     = specialCall(MethodHandles.lookup(), LongArrayData.class, "setElem", void.class, int.class, long.class).methodHandle();
     @SuppressWarnings("unused")
     private long getElem(final int index) {
         if (has(index)) {
             return array[index];
         }
         throw new ClassCastException();
     }
     @SuppressWarnings("unused")
     private void setElem(final int index, final long elem) {
         if (hasRoomFor(index)) {
             array[index] = elem;
             return;
         }
         throw new ClassCastException();
     }
     @Override
     public MethodHandle getElementGetter(final Class<?> returnType, final int programPoint) {
         if (returnType == int.class) {
             return null;
         }
         return getContinuousElementGetter(HAS_GET_ELEM, returnType, programPoint);
     }
     @Override
     public MethodHandle getElementSetter(final Class<?> elementType) {
         return elementType == int.class || elementType == long.class ? getContinuousElementSetter(MH.asType(SET_ELEM, SET_ELEM.type().changeParameterType(2, elementType)), elementType) : null;
     }
     @Override
     public int getInt(final int index) {
         return (int)array[index];
     }
     @Override
     public long getLong(final int index) {
         return array[index];
     }
     @Override
     public long getLongOptimistic(final int index, final int programPoint) {
         return array[index];
     }
     @Override
     public double getDouble(final int index) {
         return array[index];
     }
     @Override
     public double getDoubleOptimistic(final int index, final int programPoint) {
         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() {
         final int len = (int)length();
         if (len == 0) {
             return ScriptRuntime.UNDEFINED;
         }
         final int newLength = len - 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);
     }
     @Override
     public ArrayData fastSplice(final int start, final int removed, final int added) throws UnsupportedOperationException {
         final long oldLength = length();
         final long newLength = oldLength - removed + added;
         if (newLength > SparseArrayData.MAX_DENSE_LENGTH && newLength > array.length) {
             throw new UnsupportedOperationException();
         }
         final ArrayData returnValue = removed == 0 ?
                 EMPTY_ARRAY : new LongArrayData(Arrays.copyOfRange(array, start, start + removed), removed);
         if (newLength != oldLength) {
             final long[] newArray;
             if (newLength > array.length) {
                 newArray = new long[ArrayData.nextSize((int)newLength)];
                 System.arraycopy(array, 0, newArray, 0, start);
             } else {
                 newArray = array;
             }
             System.arraycopy(array, start + removed, newArray, start + added, (int)(oldLength - start - removed));
             array = newArray;
             setLength(newLength);
         }
         return returnValue;
     }
     @Override
     public long fastPush(final int arg) {
         return fastPush((long)arg);
     }
     @Override
     public long fastPush(final long arg) {
         final int len = (int)length();
         if (len == array.length) {
             array = Arrays.copyOf(array, nextSize(len));
         }
         array[len] = arg;
         return increaseLength();
     }
     @Override
     public long fastPopLong() {
         if (length() == 0) {
             throw new ClassCastException(); //undefined result
         }
         final int newLength = (int)decreaseLength();
         final long elem = array[newLength];
         array[newLength] = 0;
         return elem;
     }
     @Override
     public double fastPopDouble() {
         return fastPopLong();
    }
     @Override
     public Object fastPopObject() {
         return fastPopLong();
     }
     @Override
     public ContinuousArrayData fastConcat(final ContinuousArrayData otherData) {
         final int   otherLength = (int)otherData.length();
         final int   thisLength  = (int)length();
         assert otherLength > 0 && thisLength > 0;
         final long[] otherArray  = ((LongArrayData)otherData).array;
         final int    newLength   = otherLength + thisLength;
         final long[] newArray   = new long[ArrayData.alignUp(newLength)];
         System.arraycopy(array, 0, newArray, 0, thisLength);
         System.arraycopy(otherArray, 0, newArray, thisLength, otherLength);
         return new LongArrayData(newArray, newLength);
     }
     @Override
     public String toString() {
         assert length() <= array.length : length() + " > " + array.length;
         final StringBuilder sb = new StringBuilder(getClass().getSimpleName()).
                 append(": [");
         final int len = (int)length();
         for (int i = 0; i < len; i++) {
             sb.append(array[i]).append('L'); //make sure L suffix is on elements, to discriminate this from IntArrayData.toString()
             if (i + 1 < len) {
                 sb.append(", ");
             }
         }
         sb.append(']');
         return sb.toString();
     }
 }

Mercurial > jdk8-mips64-public > nashorn / annotate

src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java@f8da39d33117 (annotated)

src/jdk/nashorn/internal/runtime/arrays/LongArrayData.java