Implement %TypedArray%.{fill,find,findIndex}

src/harmony-array.js

Index: src/harmony-array.js
diff --git a/src/harmony-array.js b/src/harmony-array.js
index acf1b145e414774ab6604da2dd0bb7268e936d38..c0de2b9022f73705ca9ea68e26e168ccec1965b9 100644
--- a/src/harmony-array.js
+++ b/src/harmony-array.js
@@ -3,6 +3,9 @@
 // found in the LICENSE file.
 
 var $innerArrayCopyWithin;
+var $innerArrayFill;
+var $innerArrayFind;
+var $innerArrayFindIndex;
 
 (function(global, exports) {
 
@@ -73,22 +76,11 @@ function ArrayCopyWithin(target, start, end) {
   return InnerArrayCopyWithin(target, start, end, array, length);
 }
 
-// ES6 draft 07-15-13, section 15.4.3.23
-function ArrayFind(predicate /* thisArg */) {  // length == 1
-  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.find");
-
-  var array = $toObject(this);
-  var length = $toInteger(array.length);
-
+function InnerArrayFind(predicate, thisArg, array, length) {
   if (!IS_SPEC_FUNCTION(predicate)) {
     throw MakeTypeError(kCalledNonCallable, predicate);
   }
 
-  var thisArg;
-  if (%_ArgumentsLength() > 1) {
-    thisArg = %_Arguments(1);
-  }
-
   var needs_wrapper = false;
   if (IS_NULL(thisArg)) {
     if (%IsSloppyModeFunction(predicate)) thisArg = UNDEFINED;
@@ -108,24 +100,23 @@ function ArrayFind(predicate /* thisArg */) {  // length == 1
 
   return;
 }
+$innerArrayFind = InnerArrayFind;
 
-
-// ES6 draft 07-15-13, section 15.4.3.24
-function ArrayFindIndex(predicate /* thisArg */) {  // length == 1
-  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.findIndex");
+// ES6 draft 07-15-13, section 15.4.3.23
+function ArrayFind(predicate, thisArg) {
+  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.find");
 
   var array = $toObject(this);
   var length = $toInteger(array.length);
 
+  return InnerArrayFind(predicate, thisArg, array, length);
+}
+
+function InnerArrayFindIndex(predicate, thisArg, array, length) {
   if (!IS_SPEC_FUNCTION(predicate)) {
     throw MakeTypeError(kCalledNonCallable, predicate);
   }
 
-  var thisArg;
-  if (%_ArgumentsLength() > 1) {
-    thisArg = %_Arguments(1);
-  }
-
   var needs_wrapper = false;
   if (IS_NULL(thisArg)) {
     if (%IsSloppyModeFunction(predicate)) thisArg = UNDEFINED;
@@ -145,26 +136,22 @@ function ArrayFindIndex(predicate /* thisArg */) {  // length == 1
 
   return -1;
 }
+$innerArrayFindIndex = InnerArrayFindIndex;
 
-
-// ES6, draft 04-05-14, section 22.1.3.6
-function ArrayFill(value /* [, start [, end ] ] */) {  // length == 1
-  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.fill");
+// ES6 draft 07-15-13, section 15.4.3.24
+function ArrayFindIndex(predicate, thisArg) {
+  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.findIndex");
 
   var array = $toObject(this);
-  var length = TO_UINT32(array.length);
+  var length = $toInteger(array.length);
 
-  var i = 0;
-  var end = length;
+  return InnerArrayFindIndex(predicate, thisArg, array, length);
+}
 
-  if (%_ArgumentsLength() > 1) {
-    i = %_Arguments(1);
-    i = IS_UNDEFINED(i) ? 0 : TO_INTEGER(i);
-    if (%_ArgumentsLength() > 2) {
-      end = %_Arguments(2);
-      end = IS_UNDEFINED(end) ? length : TO_INTEGER(end);
-    }
-  }
+// ES6, draft 04-05-14, section 22.1.3.6
+function InnerArrayFill(value, start, end, array, length) {
+  var i = IS_UNDEFINED(start) ? 0 : TO_INTEGER(start);
+  var end = IS_UNDEFINED(end) ? length : TO_INTEGER(end);
 
   if (i < 0) {
     i += length;
@@ -188,6 +175,17 @@ function ArrayFill(value /* [, start [, end ] ] */) {  // length == 1
     array[i] = value;
   return array;
 }
+$innerArrayFill = InnerArrayFill;
+
+// ES6, draft 04-05-14, section 22.1.3.6
+function ArrayFill(value, start, end) {
+  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.fill");
+
+  var array = $toObject(this);
+  var length = TO_UINT32(array.length);
+
+  return InnerArrayFill(value, start, end, array, length);
+}
 
 // ES6, draft 10-14-14, section 22.1.2.1
 function ArrayFrom(arrayLike, mapfn, receiver) {
@@ -279,6 +277,9 @@ $installConstants(GlobalSymbol, [
 
 %FunctionSetLength(ArrayCopyWithin, 2);
 %FunctionSetLength(ArrayFrom, 1);
+%FunctionSetLength(ArrayFill, 1);
+%FunctionSetLength(ArrayFind, 1);
+%FunctionSetLength(ArrayFindIndex, 1);
 
 // Set up non-enumerable functions on the Array object.
 $installFunctions(GlobalArray, DONT_ENUM, [