@reactivex/ix-es2015-cjs/asynciterable/operators/buffer.js

The Interactive Extensions for JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.buffer = exports.BufferAsyncIterable = void 0;
const tslib_1 = require("tslib");
const asynciterablex_js_1 = require("../asynciterablex.js");
const withabort_js_1 = require("./withabort.js");
const aborterror_js_1 = require("../../aborterror.js");
/** @ignore */
class BufferAsyncIterable extends asynciterablex_js_1.AsyncIterableX {
    constructor(source, count, skip) {
        super();
        this._source = source;
        this._count = count;
        this._skip = skip;
    }
    [Symbol.asyncIterator](signal) {
        return tslib_1.__asyncGenerator(this, arguments, function* _a() {
            var _b, e_1, _c, _d;
            (0, aborterror_js_1.throwIfAborted)(signal);
            const buffers = [];
            let i = 0;
            try {
                for (var _e = true, _f = tslib_1.__asyncValues((0, withabort_js_1.wrapWithAbort)(this._source, signal)), _g; _g = yield tslib_1.__await(_f.next()), _b = _g.done, !_b; _e = true) {
                    _d = _g.value;
                    _e = false;
                    const item = _d;
                    if (i % this._skip === 0) {
                        buffers.push([]);
                    }
                    for (const buff of buffers) {
                        buff.push(item);
                    }
                    if (buffers.length > 0 && buffers[0].length === this._count) {
                        yield yield tslib_1.__await(buffers.shift());
                    }
                    i++;
                }
            }
            catch (e_1_1) { e_1 = { error: e_1_1 }; }
            finally {
                try {
                    if (!_e && !_b && (_c = _f.return)) yield tslib_1.__await(_c.call(_f));
                }
                finally { if (e_1) throw e_1.error; }
            }
            while (buffers.length > 0) {
                yield yield tslib_1.__await(buffers.shift());
            }
        });
    }
}
exports.BufferAsyncIterable = BufferAsyncIterable;
/**
 * Projects each element of an async-iterable sequence into consecutive non-overlapping
 * buffers which are produced based on element count information.
 *
 * @template TSource The type of elements in the source sequence.
 * @param {number} count The length of each buffer.
 * @param {number} [skip] An optional number of elements to skip between creation of consecutive buffers.
 * @returns {OperatorAsyncFunction<TSource, TSource[]>} An operator which returns anm async-iterable sequence with
 * consecutive non-overlapping buffers based upon element count information.
 */
function buffer(count, skip) {
    let s = skip;
    if (s == null) {
        s = count;
    }
    return function bufferOperatorFunction(source) {
        return new BufferAsyncIterable(source, count, s);
    };
}
exports.buffer = buffer;
/**
 * Projects each element of an async-iterable sequence into consecutive non-overlapping
 * buffers which are produced based on element count information.
 * @param count Length of each buffer.
 * @param skip Number of elements to skip between creation of consecutive buffers.
 */

//# sourceMappingURL=buffer.js.map