diff options
Diffstat (limited to 'src/jdk/nashorn/internal/objects/NativeUint16Array.java')
-rw-r--r-- | src/jdk/nashorn/internal/objects/NativeUint16Array.java | 139 |
1 files changed, 115 insertions, 24 deletions
diff --git a/src/jdk/nashorn/internal/objects/NativeUint16Array.java b/src/jdk/nashorn/internal/objects/NativeUint16Array.java index 8aa3d628..2fc2c51a 100644 --- a/src/jdk/nashorn/internal/objects/NativeUint16Array.java +++ b/src/jdk/nashorn/internal/objects/NativeUint16Array.java @@ -25,15 +25,23 @@ 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 java.nio.CharBuffer; 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; /** * Uint16 array for TypedArray extension @@ -55,37 +63,125 @@ public final class NativeUint16Array extends ArrayBufferView { public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) { return new NativeUint16Array(buffer, byteOffset, length); } + @Override - public ArrayData createArrayData(final NativeArrayBuffer buffer, final int byteOffset, final int length) { - return new Uint16ArrayData(buffer, byteOffset, length); + public Uint16ArrayData createArrayData(final ByteBuffer nb, final int start, final int end) { + return new Uint16ArrayData(nb.asCharBuffer(), start, end); + } + + @Override + public String getClassName() { + return "Uint16Array"; } }; - private static final class Uint16ArrayData extends ArrayDataImpl { - private Uint16ArrayData(final NativeArrayBuffer buffer, final int byteOffset, final int elementLength) { - super(buffer, byteOffset, elementLength); + private static final class Uint16ArrayData extends TypedArrayData<CharBuffer> { + + private static final MethodHandle GET_ELEM = specialCall(MethodHandles.lookup(), Uint16ArrayData.class, "getElem", int.class, int.class).methodHandle(); + private static final MethodHandle SET_ELEM = specialCall(MethodHandles.lookup(), Uint16ArrayData.class, "setElem", void.class, int.class, int.class).methodHandle(); + + private Uint16ArrayData(final CharBuffer nb, final int start, final int end) { + super(((CharBuffer)nb.position(start).limit(end)).slice(), end - start); } @Override - protected int byteIndex(final int index) { - return index * BYTES_PER_ELEMENT + byteOffset; + protected MethodHandle getGetElem() { + return GET_ELEM; + } + + @Override + protected MethodHandle getSetElem() { + return SET_ELEM; + } + + private int getElem(final int index) { + try { + return nb.get(index); + } catch (final IndexOutOfBoundsException e) { + throw new ClassCastException(); //force relink - this works for unoptimistic too + } + } + + private void setElem(final int index, final int elem) { + try { + nb.put(index, (char)elem); + } catch (final IndexOutOfBoundsException e) { + //swallow valid array indexes. it's ok. + if (index < 0) { + throw new ClassCastException(); + } + } } @Override - protected int getIntImpl(final int index) { - final int byteIndex = byteIndex(index); - final byte[] byteArray = buffer.getByteArray(); - return byteArray[byteIndex ] & 0x0000_00ff | - byteArray[byteIndex+1] << 8 & 0x0000_ff00 ; + public boolean isUnsigned() { + return true; } @Override - protected void setImpl(final int index, final int value) { - final int byteIndex = byteIndex(index); - @SuppressWarnings("MismatchedReadAndWriteOfArray") - final byte[] byteArray = buffer.getByteArray(); - byteArray[byteIndex ] = (byte)(value & 0xff); - byteArray[byteIndex+1] = (byte)(value >>> 8 & 0xff); + 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 long getLong(final int index) { + return getInt(index); + } + + @Override + public long getLongOptimistic(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 long value, final boolean strict) { + return set(index, (int)value, strict); + } + + @Override + public ArrayData set(final int index, final double value, final boolean strict) { + return set(index, (int)value, strict); } } @@ -100,7 +196,7 @@ public final class NativeUint16Array extends ArrayBufferView { */ @Constructor(arity = 1) public static NativeUint16Array constructor(final boolean newObj, final Object self, final Object... args) { - return (NativeUint16Array)constructorImpl(args, FACTORY); + return (NativeUint16Array)constructorImpl(newObj, args, FACTORY); } NativeUint16Array(final NativeArrayBuffer buffer, final int byteOffset, final int length) { @@ -108,11 +204,6 @@ public final class NativeUint16Array extends ArrayBufferView { } @Override - public String getClassName() { - return "Uint16Array"; - } - - @Override protected Factory factory() { return FACTORY; } |