diff options
Diffstat (limited to 'src/jdk/nashorn/internal/objects/NativeUint32Array.java')
| -rw-r--r-- | src/jdk/nashorn/internal/objects/NativeUint32Array.java | 142 |
1 files changed, 109 insertions, 33 deletions
diff --git a/src/jdk/nashorn/internal/objects/NativeUint32Array.java b/src/jdk/nashorn/internal/objects/NativeUint32Array.java index 73812246..4c83cc01 100644 --- a/src/jdk/nashorn/internal/objects/NativeUint32Array.java +++ b/src/jdk/nashorn/internal/objects/NativeUint32Array.java @@ -25,6 +25,13 @@ 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.ByteOrder; +import java.nio.IntBuffer; import jdk.nashorn.internal.objects.annotations.Attribute; import jdk.nashorn.internal.objects.annotations.Constructor; import jdk.nashorn.internal.objects.annotations.Function; @@ -35,6 +42,7 @@ 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; /** * Uint32 array for TypedArray extension @@ -56,55 +64,128 @@ public final class NativeUint32Array extends ArrayBufferView { public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteBegin, final int length) { return new NativeUint32Array(buffer, byteBegin, length); } + + @Override + public Uint32ArrayData createArrayData(final ByteBuffer nb, final int start, final int end) { + return new Uint32ArrayData(nb.order(ByteOrder.nativeOrder()).asIntBuffer(), start, end); + } + @Override - public ArrayData createArrayData(final NativeArrayBuffer buffer, final int byteOffset, final int length) { - return new Uint32ArrayData(buffer, byteOffset, length); + public String getClassName() { + return "Uint32Array"; } }; - private static final class Uint32ArrayData extends ArrayDataImpl { - private Uint32ArrayData(final NativeArrayBuffer buffer, final int byteOffset, final int elementLength) { - super(buffer, byteOffset, elementLength); + private static final class Uint32ArrayData extends TypedArrayData<IntBuffer> { + + private static final MethodHandle GET_ELEM = specialCall(MethodHandles.lookup(), Uint32ArrayData.class, "getElem", long.class, int.class).methodHandle(); + private static final MethodHandle SET_ELEM = specialCall(MethodHandles.lookup(), Uint32ArrayData.class, "setElem", void.class, int.class, int.class).methodHandle(); + + private Uint32ArrayData(final IntBuffer nb, final int start, final int end) { + super(((IntBuffer)nb.position(start).limit(end)).slice(), end - start); + } + + @Override + protected MethodHandle getGetElem() { + return GET_ELEM; + } + + @Override + protected MethodHandle getSetElem() { + return SET_ELEM; + } + + @Override + public MethodHandle getElementGetter(final Class<?> returnType, final int programPoint) { + if (returnType == int.class) { + return null; + } + return getContinuousElementGetter(getClass(), GET_ELEM, returnType, programPoint); + } + + private long getElem(final int index) { + try { + return JSType.toUint32(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, elem); + } catch (final IndexOutOfBoundsException e) { + //swallow valid array indexes. it's ok. + if (index < 0) { + throw new ClassCastException(); + } + } + } + + @Override + public boolean isUnsigned() { + return true; + } + + @Override + public Class<?> getElementType() { + return long.class; + } + + @Override + public Class<?> getBoxedElementType() { + return Integer.class; + } + + @Override + public int getInt(final int index) { + return (int)getLong(index); + } + + @Override + public long getLong(final int index) { + return getElem(index); + } + + @Override + public long getLongOptimistic(final int index, final int programPoint) { + return getElem(index); } @Override - protected int byteIndex(final int index) { - return index * BYTES_PER_ELEMENT + byteOffset; + public double getDouble(final int index) { + return getLong(index); } @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 | - byteArray[byteIndex+2] << 16 & 0x00ff_0000 | - byteArray[byteIndex+3] << 24 & 0xff00_0000 ; + public double getDoubleOptimistic(final int index, final int programPoint) { + return getLong(index); } @Override - protected long getLongImpl(final int key) { - return getIntImpl(key) & JSType.MAX_UINT; + public Object getObject(final int index) { + return getLong(index); } @Override - protected double getDoubleImpl(final int key) { - return getIntImpl(key) & JSType.MAX_UINT; + public ArrayData set(final int index, final Object value, final boolean strict) { + return set(index, JSType.toInt32(value), strict); } @Override - protected Object getObjectImpl(final int key) { - return getIntImpl(key) & JSType.MAX_UINT; + public ArrayData set(final int index, final int value, final boolean strict) { + setElem(index, value); + return this; } @Override - protected void setImpl(final int index, final int value) { - final int byteIndex = byteIndex(index); - final byte[] byteArray = buffer.getByteArray(); - byteArray[byteIndex ] = (byte)(value & 0xff); - byteArray[byteIndex+1] = (byte)(value >>> 8 & 0xff); - byteArray[byteIndex+2] = (byte)(value >>> 16 & 0xff); - byteArray[byteIndex+3] = (byte)(value >>> 24 & 0xff); + 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); } } @@ -119,7 +200,7 @@ public final class NativeUint32Array extends ArrayBufferView { */ @Constructor(arity = 1) public static NativeUint32Array constructor(final boolean newObj, final Object self, final Object... args) { - return (NativeUint32Array)constructorImpl(args, FACTORY); + return (NativeUint32Array)constructorImpl(newObj, args, FACTORY); } NativeUint32Array(final NativeArrayBuffer buffer, final int byteOffset, final int length) { @@ -127,11 +208,6 @@ public final class NativeUint32Array extends ArrayBufferView { } @Override - public String getClassName() { - return "Uint32Array"; - } - - @Override protected Factory factory() { return FACTORY; } |