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// Copyright 2013 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.
'use strict';
// This file relies on the fact that the following declaration has been made
// in runtime.js:
// var $Array = global.Array;
// -------------------------------------------------------------------
// 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);
if (!IS_SPEC_FUNCTION(predicate)) {
throw MakeTypeError('called_non_callable', [predicate]);
}
var thisArg;
if (%_ArgumentsLength() > 1) {
thisArg = %_Arguments(1);
}
if (IS_NULL_OR_UNDEFINED(thisArg)) {
thisArg = %GetDefaultReceiver(predicate) || thisArg;
} else if (!IS_SPEC_OBJECT(thisArg) && %IsSloppyModeFunction(predicate)) {
thisArg = ToObject(thisArg);
}
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
if (%_CallFunction(thisArg, element, i, array, predicate)) {
return element;
}
}
}
return;
}
// ES6 draft 07-15-13, section 15.4.3.24
function ArrayFindIndex(predicate /* thisArg */) { // length == 1
CHECK_OBJECT_COERCIBLE(this, "Array.prototype.findIndex");
var array = ToObject(this);
var length = ToInteger(array.length);
if (!IS_SPEC_FUNCTION(predicate)) {
throw MakeTypeError('called_non_callable', [predicate]);
}
var thisArg;
if (%_ArgumentsLength() > 1) {
thisArg = %_Arguments(1);
}
if (IS_NULL_OR_UNDEFINED(thisArg)) {
thisArg = %GetDefaultReceiver(predicate) || thisArg;
} else if (!IS_SPEC_OBJECT(thisArg) && %IsSloppyModeFunction(predicate)) {
thisArg = ToObject(thisArg);
}
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
if (%_CallFunction(thisArg, element, i, array, predicate)) {
return i;
}
}
}
return -1;
}
// ES6, draft 04-05-14, section 22.1.3.6
function ArrayFill(value /* [, start [, end ] ] */) { // length == 1
CHECK_OBJECT_COERCIBLE(this, "Array.prototype.fill");
var array = ToObject(this);
var length = TO_UINT32(array.length);
var i = 0;
var end = 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);
}
}
if (i < 0) {
i += length;
if (i < 0) i = 0;
} else {
if (i > length) i = length;
}
if (end < 0) {
end += length;
if (end < 0) end = 0;
} else {
if (end > length) end = length;
}
if ((end - i) > 0 && ObjectIsFrozen(array)) {
throw MakeTypeError("array_functions_on_frozen",
["Array.prototype.fill"]);
}
for (; i < end; i++)
array[i] = value;
return array;
}
// ES6, draft 05-22-14, section 22.1.2.3
function ArrayOf() {
var length = %_ArgumentsLength();
var constructor = this;
// TODO: Implement IsConstructor (ES6 section 7.2.5)
var array = IS_SPEC_FUNCTION(constructor) ? new constructor(length) : [];
for (var i = 0; i < length; i++) {
%AddElement(array, i, %_Arguments(i), NONE);
}
array.length = length;
return array;
}
// -------------------------------------------------------------------
function HarmonyArrayExtendArrayPrototype() {
%CheckIsBootstrapping();
// Set up non-enumerable functions on the Array object.
InstallFunctions($Array, DONT_ENUM, $Array(
"of", ArrayOf
));
// Set up the non-enumerable functions on the Array prototype object.
InstallFunctions($Array.prototype, DONT_ENUM, $Array(
"find", ArrayFind,
"findIndex", ArrayFindIndex,
"fill", ArrayFill
));
}
HarmonyArrayExtendArrayPrototype();
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