8014735: Typed Array, BYTES_PER_ELEMENT should be a class property

Reviewed-by: lagergren, jlaskey

src/jdk/nashorn/internal/objects/ArrayBufferView.java

@@ -28,6 +28,7 @@ package jdk.nashorn.internal.objects;
 import jdk.nashorn.internal.objects.annotations.Attribute;
 import jdk.nashorn.internal.objects.annotations.Getter;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
@@ -58,11 +59,6 @@ abstract class ArrayBufferView extends ScriptObject {
         return factory().bytesPerElement;
     }
 
-    @Getter(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE)
-    public static Object BYTES_PER_ELEMENT(final Object self) {
-        return ((ArrayBufferView)self).bytesPerElement();
-    }
-
     @Getter(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE)
     public static Object buffer(final Object self) {
         return ((ArrayDataImpl)((ArrayBufferView)self).getArray()).buffer;

src/jdk/nashorn/internal/objects/NativeFloat32Array.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
@@ -38,7 +40,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Float32Array")
 public final class NativeFloat32Array extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 4;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 4;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) {

src/jdk/nashorn/internal/objects/NativeFloat64Array.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
@@ -38,7 +40,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Float64Array")
 public final class NativeFloat64Array extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 8;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 8;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) {

src/jdk/nashorn/internal/objects/NativeInt16Array.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
 
@@ -37,7 +39,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Int16Array")
 public final class NativeInt16Array extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 2;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 2;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) {

src/jdk/nashorn/internal/objects/NativeInt32Array.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
 
@@ -37,7 +39,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Int32Array")
 public final class NativeInt32Array extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 4;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 4;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) {

src/jdk/nashorn/internal/objects/NativeInt8Array.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
 
@@ -37,7 +39,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Int8Array")
 public final class NativeInt8Array extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 1;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 1;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) {

src/jdk/nashorn/internal/objects/NativeUint16Array.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
 
@@ -37,7 +39,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Uint16Array")
 public final class NativeUint16Array extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 2;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 2;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) {

src/jdk/nashorn/internal/objects/NativeUint32Array.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
@@ -38,7 +40,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Uint32Array")
 public final class NativeUint32Array extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 4;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 4;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteBegin, final int length) {

src/jdk/nashorn/internal/objects/NativeUint8Array.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
 
@@ -37,7 +39,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Uint8Array")
 public final class NativeUint8Array extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 1;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 1;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) {

src/jdk/nashorn/internal/objects/NativeUint8ClampedArray.java

@@ -28,7 +28,9 @@ package jdk.nashorn.internal.objects;
 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.ScriptObject;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
@@ -38,7 +40,9 @@ import jdk.nashorn.internal.runtime.arrays.ArrayData;
  */
 @ScriptClass("Uint8ClampedArray")
 public final class NativeUint8ClampedArray extends ArrayBufferView {
-    private static final int BYTES_PER_ELEMENT = 1;
+    @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_WRITABLE | Attribute.NOT_CONFIGURABLE, where = Where.CONSTRUCTOR)
+    public static final int BYTES_PER_ELEMENT = 1;
+
     private static final Factory FACTORY = new Factory(BYTES_PER_ELEMENT) {
         @Override
         public ArrayBufferView construct(final NativeArrayBuffer buffer, final int byteOffset, final int length) {

test/script/basic/JDK-8014735.js

+/*
+ * 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.
+ *
+ * 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.
+ */
+
+/**
+ * JDK-8014735: Typed Array, BYTES_PER_ELEMENT should be a class property
+ *
+ * @test
+ * @run
+ */
+
+function bytesPerElement(func) {
+    print(func.name + ".BYTES_PER_ELEMENT = " + func.BYTES_PER_ELEMENT);
+}
+
+bytesPerElement(Int8Array);
+bytesPerElement(Int16Array);
+bytesPerElement(Int32Array);
+bytesPerElement(Uint8Array);
+bytesPerElement(Uint8ClampedArray);
+bytesPerElement(Uint16Array);
+bytesPerElement(Uint32Array);
+bytesPerElement(Float32Array);
+bytesPerElement(Float64Array);

test/script/basic/JDK-8014735.js.EXPECTED

+Int8Array.BYTES_PER_ELEMENT = 1
+Int16Array.BYTES_PER_ELEMENT = 2
+Int32Array.BYTES_PER_ELEMENT = 4
+Uint8Array.BYTES_PER_ELEMENT = 1
+Uint8ClampedArray.BYTES_PER_ELEMENT = 1
+Uint16Array.BYTES_PER_ELEMENT = 2
+Uint32Array.BYTES_PER_ELEMENT = 4
+Float32Array.BYTES_PER_ELEMENT = 4
+Float64Array.BYTES_PER_ELEMENT = 8

test/script/basic/NASHORN-377.js

@@ -43,7 +43,7 @@ function tohex(d, w) {
 function arrstr(a, n, w) {
   var s = "";
   if (typeof n == "undefined") n = a.length;
-  if (typeof w == "undefined") w = a.BYTES_PER_ELEMENT * 2;
+  if (typeof w == "undefined") w = a.constructor.BYTES_PER_ELEMENT * 2;
   for (var i = 0; i < n; i++) {
     s += tohex(a[i], w);
   }
@@ -96,7 +96,7 @@ function fillArray(a, start) {
   var b = new ArrayBuffer(8);
   for (var i in types) {
     var x = new types[i](b);
-    print(x.byteOffset, x.byteLength, x.length, x.BYTES_PER_ELEMENT);
+    print(x.byteOffset, x.byteLength, x.length, x.constructor.BYTES_PER_ELEMENT);
     assertTrue(function(){ return x.constructor === types[i] });
   }
 })();