sequenceEqual.js

/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
import { Subscriber } from '../Subscriber';
export function sequenceEqual(compareTo, comparator) {
    return function (source) { return source.lift(new SequenceEqualOperator(compareTo, comparator)); };
}
var SequenceEqualOperator = /*@__PURE__*/ (function () {
    function SequenceEqualOperator(compareTo, comparator) {
        this.compareTo = compareTo;
        this.comparator = comparator;
    }
    SequenceEqualOperator.prototype.call = function (subscriber, source) {
        return source.subscribe(new SequenceEqualSubscriber(subscriber, this.compareTo, this.comparator));
    };
    return SequenceEqualOperator;
}());
export { SequenceEqualOperator };
var SequenceEqualSubscriber = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(SequenceEqualSubscriber, _super);
    function SequenceEqualSubscriber(destination, compareTo, comparator) {
        var _this = _super.call(this, destination) || this;
        _this.compareTo = compareTo;
        _this.comparator = comparator;
        _this._a = [];
        _this._b = [];
        _this._oneComplete = false;
        _this.destination.add(compareTo.subscribe(new SequenceEqualCompareToSubscriber(destination, _this)));
        return _this;
    }
    SequenceEqualSubscriber.prototype._next = function (value) {
        if (this._oneComplete && this._b.length === 0) {
            this.emit(false);
        }
        else {
            this._a.push(value);
            this.checkValues();
        }
    };
    SequenceEqualSubscriber.prototype._complete = function () {
        if (this._oneComplete) {
            this.emit(this._a.length === 0 && this._b.length === 0);
        }
        else {
            this._oneComplete = true;
        }
        this.unsubscribe();
    };
    SequenceEqualSubscriber.prototype.checkValues = function () {
        var _c = this, _a = _c._a, _b = _c._b, comparator = _c.comparator;
        while (_a.length > 0 && _b.length > 0) {
            var a = _a.shift();
            var b = _b.shift();
            var areEqual = false;
            try {
                areEqual = comparator ? comparator(a, b) : a === b;
            }
            catch (e) {
                this.destination.error(e);
            }
            if (!areEqual) {
                this.emit(false);
            }
        }
    };
    SequenceEqualSubscriber.prototype.emit = function (value) {
        var destination = this.destination;
        destination.next(value);
        destination.complete();
    };
    SequenceEqualSubscriber.prototype.nextB = function (value) {
        if (this._oneComplete && this._a.length === 0) {
            this.emit(false);
        }
        else {
            this._b.push(value);
            this.checkValues();
        }
    };
    SequenceEqualSubscriber.prototype.completeB = function () {
        if (this._oneComplete) {
            this.emit(this._a.length === 0 && this._b.length === 0);
        }
        else {
            this._oneComplete = true;
        }
    };
    return SequenceEqualSubscriber;
}(Subscriber));
export { SequenceEqualSubscriber };
var SequenceEqualCompareToSubscriber = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(SequenceEqualCompareToSubscriber, _super);
    function SequenceEqualCompareToSubscriber(destination, parent) {
        var _this = _super.call(this, destination) || this;
        _this.parent = parent;
        return _this;
    }
    SequenceEqualCompareToSubscriber.prototype._next = function (value) {
        this.parent.nextB(value);
    };
    SequenceEqualCompareToSubscriber.prototype._error = function (err) {
        this.parent.error(err);
        this.unsubscribe();
    };
    SequenceEqualCompareToSubscriber.prototype._complete = function () {
        this.parent.completeB();
        this.unsubscribe();
    };
    return SequenceEqualCompareToSubscriber;
}(Subscriber));
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