mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-19 16:47:01 +03:00
Jacob Trimble
0dd64074b9
With the new style rule, we cannot have two statements on the same line. So we can no longer have an "if" on a single line and we cannot have an arrow function with a body on the same line as when it is used. This is mostly a manual change. Change-Id: I2285202dd5ecbad764308bc725e6d317ff2ee7f0
90 lines
2.0 KiB
JavaScript
90 lines
2.0 KiB
JavaScript
/**
|
|
* @license
|
|
* Copyright 2016 Google Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
goog.provide('shaka.util.Iterables');
|
|
|
|
|
|
/**
|
|
* Recreations of Array-like functions so that they work on any iterable
|
|
* type.
|
|
* @final
|
|
*/
|
|
shaka.util.Iterables = class {
|
|
/**
|
|
* @param {!Iterable.<FROM>} iterable
|
|
* @param {function(FROM):TO} mapping
|
|
* @return {!Iterable.<TO>}
|
|
* @template FROM,TO
|
|
*/
|
|
static map(iterable, mapping) {
|
|
const array = [];
|
|
for (const x of iterable) {
|
|
array.push(mapping(x));
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* @param {!Iterable.<T>} iterable
|
|
* @param {function(T):boolean} test
|
|
* @return {boolean}
|
|
* @template T
|
|
*/
|
|
static every(iterable, test) {
|
|
for (const x of iterable) {
|
|
if (!test(x)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param {!Iterable.<T>} iterable
|
|
* @param {function(T):boolean} test
|
|
* @return {boolean}
|
|
* @template T
|
|
*/
|
|
static some(iterable, test) {
|
|
for (const x of iterable) {
|
|
if (test(x)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Iterate over an iterable object and return only the items that |filter|
|
|
* returns true for.
|
|
*
|
|
* @param {!Iterable.<T>} iterable
|
|
* @param {function(T):boolean} filter
|
|
* @return {!Array.<T>}
|
|
* @template T
|
|
*/
|
|
static filter(iterable, filter) {
|
|
const out = [];
|
|
for (const x of iterable) {
|
|
if (filter(x)) {
|
|
out.push(x);
|
|
}
|
|
}
|
|
return out;
|
|
}
|
|
};
|