Implement %TypedArray%.{lastI,i}ndexOf

src/harmony-typedarray.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.
 
 (function(global, exports) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 116 matching lines @@
   var length = %_TypedArrayGetLength(this);
 
   if (IS_UNDEFINED(comparefn)) {
     comparefn = TypedArrayComparefn;
   }
 
   return %_CallFunction(this, length, comparefn, $innerArraySort);
 }
 
 
+// ES6 section 22.2.3.13
+function TypedArrayIndexOf(element, index) {
+  if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
+
+  var length = %_TypedArrayGetLength(this);
+
+  return %_CallFunction(this, element, index, length, $innerArrayIndexOf);
+}
+%FunctionSetLength(TypedArrayIndexOf, 1);
+
+
+// ES6 section 22.2.3.16
+function TypedArrayLastIndexOf(element, index) {
+  if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
+
+  var length = %_TypedArrayGetLength(this);
+
+  return %_CallFunction(this, element, index, length,
+                        %_ArgumentsLength(), $innerArrayLastIndexOf);
+}
+%FunctionSetLength(TypedArrayLastIndexOf, 1);
+
+
 // ES6 draft 08-24-14, section 22.2.2.2
 function TypedArrayOf() {
   var length = %_ArgumentsLength();
   var array = new this(length);
   for (var i = 0; i < length; i++) {
     array[i] = %_Arguments(i);
   }
   return array;
 }
 
@@ skipping 30 matching lines @@
   ]);
 
   // Set up non-enumerable functions on the prototype object.
   $installFunctions(GlobalNAME.prototype, DONT_ENUM, [
     "copyWithin", TypedArrayCopyWithin,
     "every", TypedArrayEvery,
     "forEach", TypedArrayForEach,
     "find", TypedArrayFind,
     "findIndex", TypedArrayFindIndex,
     "fill", TypedArrayFill,
+    "indexOf", TypedArrayIndexOf,
+    "lastIndexOf", TypedArrayLastIndexOf,
     "reverse", TypedArrayReverse,
     "sort", TypedArraySort
   ]);
 endmacro
 
 TYPED_ARRAYS(EXTEND_TYPED_ARRAY)
 
 })