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Copy pathTypedArrayPrototype.js
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287 lines (223 loc) · 7.98 KB
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/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// Note that the intrisic @typedArrayLength checks the that the argument passed is a typed array
// and throws if it is not.
function every(callback /*, thisArg */)
{
"use strict";
var length = @typedArrayLength(this);
var thisArg = arguments.length > 1 ? arguments[1] : @undefined;
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.every callback must be a function");
for (var i = 0; i < length; i++) {
if (!callback.@call(thisArg, this[i], i, this))
return false;
}
return true;
}
function find(callback /* [, thisArg] */)
{
"use strict";
var length = @typedArrayLength(this);
var thisArg = arguments.length > 1 ? arguments[1] : @undefined;
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.find callback must be a function");
for (var i = 0; i < length; i++) {
let elem = this[i];
if (callback.@call(thisArg, elem, i, this))
return elem;
}
return @undefined;
}
function findIndex(callback /* [, thisArg] */)
{
"use strict";
var length = @typedArrayLength(this);
var thisArg = arguments.length > 1 ? arguments[1] : @undefined;
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.findIndex callback must be a function");
for (var i = 0; i < length; i++) {
if (callback.@call(thisArg, this[i], i, this))
return i;
}
return -1;
}
function forEach(callback /* [, thisArg] */)
{
"use strict";
var length = @typedArrayLength(this);
var thisArg = arguments.length > 1 ? arguments[1] : @undefined;
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.forEach callback must be a function");
for (var i = 0; i < length; i++)
callback.@call(thisArg, this[i], i, this);
}
function some(callback /* [, thisArg] */)
{
// 22.2.3.24
"use strict";
var length = @typedArrayLength(this);
var thisArg = arguments.length > 1 ? arguments[1] : @undefined;
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.some callback must be a function");
for (var i = 0; i < length; i++) {
if (callback.@call(thisArg, this[i], i, this))
return true;
}
return false;
}
function sort(comparator)
{
// 22.2.3.25
"use strict";
function min(a, b)
{
return a < b ? a : b;
}
function merge(dst, src, srcIndex, srcEnd, width, comparator)
{
var left = srcIndex;
var leftEnd = min(left + width, srcEnd);
var right = leftEnd;
var rightEnd = min(right + width, srcEnd);
for (var dstIndex = left; dstIndex < rightEnd; ++dstIndex) {
if (right < rightEnd) {
if (left >= leftEnd || comparator(src[right], src[left]) < 0) {
dst[dstIndex] = src[right++];
continue;
}
}
dst[dstIndex] = src[left++];
}
}
function mergeSort(array, valueCount, comparator)
{
var buffer = [ ];
buffer.length = valueCount;
var dst = buffer;
var src = array;
for (var width = 1; width < valueCount; width *= 2) {
for (var srcIndex = 0; srcIndex < valueCount; srcIndex += 2 * width)
merge(dst, src, srcIndex, valueCount, width, comparator);
var tmp = src;
src = dst;
dst = tmp;
}
if (src != array) {
for(var i = 0; i < valueCount; i++)
array[i] = src[i];
}
}
var length = @typedArrayLength(this);
if (length < 2)
return;
if (typeof comparator == "function")
mergeSort(this, length, comparator);
else
@typedArraySort(this);
return this;
}
function reduce(callback /* [, initialValue] */)
{
// 22.2.3.19
"use strict";
var length = @typedArrayLength(this);
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.reduce callback must be a function");
if (length === 0 && arguments.length < 2)
throw new @TypeError("TypedArray.prototype.reduce of empty array with no initial value");
var accumulator, k = 0;
if (arguments.length > 1)
accumulator = arguments[1];
else
accumulator = this[k++];
for (; k < length; k++)
accumulator = callback.@call(@undefined, accumulator, this[k], k, this);
return accumulator;
}
function reduceRight(callback /* [, initialValue] */)
{
// 22.2.3.20
"use strict";
var length = @typedArrayLength(this);
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.reduceRight callback must be a function");
if (length === 0 && arguments.length < 2)
throw new @TypeError("TypedArray.prototype.reduceRight of empty array with no initial value");
var accumulator, k = length - 1;
if (arguments.length > 1)
accumulator = arguments[1];
else
accumulator = this[k--];
for (; k >= 0; k--)
accumulator = callback.@call(@undefined, accumulator, this[k], k, this);
return accumulator;
}
function map(callback /*, thisArg */)
{
// 22.2.3.18
"use strict";
var length = @typedArrayLength(this);
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.map callback must be a function");
var thisArg = arguments.length > 1 ? arguments[1] : @undefined;
// FIXME: This should be a species constructor.
var result = new this.constructor(length);
for (var i = 0; i < length; i++) {
var mappedValue = callback.@call(thisArg, this[i], i, this);
result[i] = mappedValue;
}
return result;
}
function filter(callback /*, thisArg */)
{
"use strict";
var length = @typedArrayLength(this);
if (typeof callback !== "function")
throw new @TypeError("TypedArray.prototype.filter callback must be a function");
var thisArg = arguments.length > 1 ? arguments[1] : @undefined;
var kept = [];
for (var i = 0; i < length; i++) {
var value = this[i];
if (callback.@call(thisArg, value, i, this))
kept.@push(value);
}
// FIXME: This should be a species constructor.
var result = new this.constructor(kept.length);
for (var i = 0; i < kept.length; i++)
result[i] = kept[i];
return result;
}
function toLocaleString()
{
"use strict";
var length = @typedArrayLength(this);
if (length == 0)
return "";
var string = this[0].toLocaleString();
for (var i = 1; i < length; i++)
string += "," + this[i].toLocaleString();
return string;
}