work.suroh.tk/node_modules/rxjs/_esm5/observable/IteratorObservable.js

173 lines
5.2 KiB
JavaScript

/** PURE_IMPORTS_START .._util_root,.._Observable,.._symbol_iterator PURE_IMPORTS_END */
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b)
if (b.hasOwnProperty(p))
d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
import { root } from '../util/root';
import { Observable } from '../Observable';
import { iterator as Symbol_iterator } from '../symbol/iterator';
/**
* We need this JSDoc comment for affecting ESDoc.
* @extends {Ignored}
* @hide true
*/
export var IteratorObservable = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
__extends(IteratorObservable, _super);
function IteratorObservable(iterator, scheduler) {
_super.call(this);
this.scheduler = scheduler;
if (iterator == null) {
throw new Error('iterator cannot be null.');
}
this.iterator = getIterator(iterator);
}
IteratorObservable.create = function (iterator, scheduler) {
return new IteratorObservable(iterator, scheduler);
};
IteratorObservable.dispatch = function (state) {
var index = state.index, hasError = state.hasError, iterator = state.iterator, subscriber = state.subscriber;
if (hasError) {
subscriber.error(state.error);
return;
}
var result = iterator.next();
if (result.done) {
subscriber.complete();
return;
}
subscriber.next(result.value);
state.index = index + 1;
if (subscriber.closed) {
if (typeof iterator.return === 'function') {
iterator.return();
}
return;
}
this.schedule(state);
};
/** @deprecated internal use only */ IteratorObservable.prototype._subscribe = function (subscriber) {
var index = 0;
var _a = this, iterator = _a.iterator, scheduler = _a.scheduler;
if (scheduler) {
return scheduler.schedule(IteratorObservable.dispatch, 0, {
index: index, iterator: iterator, subscriber: subscriber
});
}
else {
do {
var result = iterator.next();
if (result.done) {
subscriber.complete();
break;
}
else {
subscriber.next(result.value);
}
if (subscriber.closed) {
if (typeof iterator.return === 'function') {
iterator.return();
}
break;
}
} while (true);
}
};
return IteratorObservable;
}(Observable));
var StringIterator = /*@__PURE__*/ (/*@__PURE__*/ function () {
function StringIterator(str, idx, len) {
if (idx === void 0) {
idx = 0;
}
if (len === void 0) {
len = str.length;
}
this.str = str;
this.idx = idx;
this.len = len;
}
StringIterator.prototype[Symbol_iterator] = function () { return (this); };
StringIterator.prototype.next = function () {
return this.idx < this.len ? {
done: false,
value: this.str.charAt(this.idx++)
} : {
done: true,
value: undefined
};
};
return StringIterator;
}());
var ArrayIterator = /*@__PURE__*/ (/*@__PURE__*/ function () {
function ArrayIterator(arr, idx, len) {
if (idx === void 0) {
idx = 0;
}
if (len === void 0) {
len = toLength(arr);
}
this.arr = arr;
this.idx = idx;
this.len = len;
}
ArrayIterator.prototype[Symbol_iterator] = function () { return this; };
ArrayIterator.prototype.next = function () {
return this.idx < this.len ? {
done: false,
value: this.arr[this.idx++]
} : {
done: true,
value: undefined
};
};
return ArrayIterator;
}());
function getIterator(obj) {
var i = obj[Symbol_iterator];
if (!i && typeof obj === 'string') {
return new StringIterator(obj);
}
if (!i && obj.length !== undefined) {
return new ArrayIterator(obj);
}
if (!i) {
throw new TypeError('object is not iterable');
}
return obj[Symbol_iterator]();
}
var maxSafeInteger = /*@__PURE__*/ Math.pow(2, 53) - 1;
function toLength(o) {
var len = +o.length;
if (isNaN(len)) {
return 0;
}
if (len === 0 || !numberIsFinite(len)) {
return len;
}
len = sign(len) * Math.floor(Math.abs(len));
if (len <= 0) {
return 0;
}
if (len > maxSafeInteger) {
return maxSafeInteger;
}
return len;
}
function numberIsFinite(value) {
return typeof value === 'number' && root.isFinite(value);
}
function sign(value) {
var valueAsNumber = +value;
if (valueAsNumber === 0) {
return valueAsNumber;
}
if (isNaN(valueAsNumber)) {
return valueAsNumber;
}
return valueAsNumber < 0 ? -1 : 1;
}
//# sourceMappingURL=IteratorObservable.js.map