Include Harmony Array/TypedArray methods unconditionally

test/mjsunit/harmony/typedarrays-foreach.js

-// Copyright 2014 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-arrays --allow-natives-syntax
-
-var typedArrayConstructors = [
-  Uint8Array,
-  Int8Array,
-  Uint16Array,
-  Int16Array,
-  Uint32Array,
-  Int32Array,
-  Uint8ClampedArray,
-  Float32Array,
-  Float64Array];
-
-function CheckTypedArrayIsNeutered(array) {
-  assertEquals(0, array.byteLength);
-  assertEquals(0, array.byteOffset);
-  assertEquals(0, array.length);
-}
-
-function TestTypedArrayForEach(constructor) {
-  assertEquals(1, constructor.prototype.forEach.length);
-
-  var a = new constructor(2);
-  a[0] = 0;
-  a[1] = 1;
-
-  var count = 0;
-  a.forEach(function (n) { count++; });
-  assertEquals(2, count);
-
-  // Use specified object as this object when calling the function.
-  var o = { value: 42 };
-  var result = [];
-  a.forEach(function (n, index, array) { result.push(this.value); }, o);
-  assertArrayEquals([42, 42], result);
-
-  // Modify the original array.
-  count = 0;
-  a.forEach(function (n, index, array) { array[index] = n + 1; count++ });
-  assertEquals(2, count);
-  assertArrayEquals([1, 2], a);
-
-  // Check that values passed as second argument are wrapped into
-  // objects when calling into sloppy mode functions.
-  function CheckWrapping(value, wrapper) {
-    var wrappedValue = new wrapper(value);
-
-    a.forEach(function () {
-      assertEquals("object", typeof this);
-      assertEquals(wrappedValue, this);
-    }, value);
-
-    a.forEach(function () {
-      "use strict";
-      assertEquals(typeof value, typeof this);
-      assertEquals(value, this);
-    }, value);
-  }
-  CheckWrapping(true, Boolean);
-  CheckWrapping(false, Boolean);
-  CheckWrapping("xxx", String);
-  CheckWrapping(42, Number);
-  CheckWrapping(3.14, Number);
-  CheckWrapping({}, Object);
-
-  // Throw before completing iteration, only the first element
-  // should be modified when thorwing mid-way.
-  count = 0;
-  a[0] = 42;
-  a[1] = 42;
-  try {
-    a.forEach(function (n, index, array) {
-      if (count > 0) throw "meh";
-      array[index] = n + 1;
-      count++;
-    });
-  } catch (e) {
-  }
-  assertEquals(1, count);
-  assertEquals(43, a[0]);
-  assertEquals(42, a[1]);
-
-  // Neutering the buffer backing the typed array mid-way should
-  // still make .forEach() finish, but exiting early due to the missing
-  // elements, and the array should keep being empty after detaching it.
-  // TODO(dehrenberg): According to the ES6 spec, accessing or testing
-  // for members on a detached TypedArray should throw, so really this
-  // should throw in the third iteration. However, this behavior matches
-  // the Khronos spec.
-  a = new constructor(3);
-  count = 0;
-  a.forEach(function (n, index, array) {
-    if (count > 0) %ArrayBufferNeuter(array.buffer);
-    array[index] = n + 1;
-    count++;
-  });
-  assertEquals(2, count);
-  CheckTypedArrayIsNeutered(a);
-  assertEquals(undefined, a[0]);
-
-  // The method must work for typed arrays created from ArrayBuffer.
-  // The length of the ArrayBuffer is chosen so it is a multiple of
-  // all lengths of the typed array items.
-  a = new constructor(new ArrayBuffer(64));
-  count = 0;
-  a.forEach(function (n) { count++ });
-  assertEquals(a.length, count);
-
-  // Externalizing the array mid-way accessing the .buffer property
-  // should work.
-  a = new constructor(2);
-  count = 0;
-  var buffer = undefined;
-  a.forEach(function (n, index, array) {
-    if (count++ > 0)
-      buffer = array.buffer;
-  });
-  assertEquals(2, count);
-  assertTrue(!!buffer);
-  assertEquals("ArrayBuffer", %_ClassOf(buffer));
-  assertSame(buffer, a.buffer);
-
-  // The %TypedArray%.forEach() method should not work when
-  // transplanted to objects that are not typed arrays.
-  assertThrows(function () { constructor.prototype.forEach.call([1, 2, 3], function (x) {}) }, TypeError);
-  assertThrows(function () { constructor.prototype.forEach.call("abc", function (x) {}) }, TypeError);
-  assertThrows(function () { constructor.prototype.forEach.call({}, function (x) {}) }, TypeError);
-  assertThrows(function () { constructor.prototype.forEach.call(0, function (x) {}) }, TypeError);
-
-  // Method must be useable on instances of other typed arrays.
-  for (var i = 0; i < typedArrayConstructors.length; i++) {
-    count = 0;
-    a = new typedArrayConstructors[i](4);
-    constructor.prototype.forEach.call(a, function (x) { count++ });
-    assertEquals(a.length, count);
-  }
-
-  // Shadowing length doesn't affect forEach, unlike Array.prototype.forEach
-  a = new constructor([1, 2]);
-  Object.defineProperty(a, 'length', {value: 1});
-  var x = 0;
-  assertEquals(a.forEach(function(elt) { x += elt; }), undefined);
-  assertEquals(x, 3);
-  assertEquals(Array.prototype.forEach.call(a,
-      function(elt) { x += elt; }), undefined);
-  assertEquals(x, 4);
-}
-
-for (i = 0; i < typedArrayConstructors.length; i++) {
-  TestTypedArrayForEach(typedArrayConstructors[i]);
-}