74 lines
2.5 KiB
JavaScript
74 lines
2.5 KiB
JavaScript
var __defProp = Object.defineProperty;
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var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
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var __getOwnPropNames = Object.getOwnPropertyNames;
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var __hasOwnProp = Object.prototype.hasOwnProperty;
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var __export = (target, all) => {
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for (var name in all)
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__defProp(target, name, { get: all[name], enumerable: true });
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};
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var __copyProps = (to, from, except, desc) => {
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if (from && typeof from === "object" || typeof from === "function") {
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for (let key of __getOwnPropNames(from))
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if (!__hasOwnProp.call(to, key) && key !== except)
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__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
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}
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return to;
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};
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var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
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var aggregator_exports = {};
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__export(aggregator_exports, {
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Aggregator: () => Aggregator
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});
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module.exports = __toCommonJS(aggregator_exports);
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var import_core = require("./core");
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var import_lazy = require("./lazy");
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var import_util = require("./util");
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class Aggregator {
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#pipeline;
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#options;
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constructor(pipeline, options) {
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this.#pipeline = pipeline;
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this.#options = (0, import_core.initOptions)(options);
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}
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/**
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* Returns an {@link Iterator} for lazy evaluation of the pipeline.
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*
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* @param collection An array or iterator object
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* @returns {Iterator} an iterator object
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*/
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stream(collection, options) {
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let iter = (0, import_lazy.Lazy)(collection);
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const opts = options ?? this.#options;
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const mode = opts.processingMode;
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if (mode & import_core.ProcessingMode.CLONE_INPUT) iter.map(import_util.cloneDeep);
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const stages = new Array();
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if (!(0, import_util.isEmpty)(this.#pipeline)) {
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for (const opExpr of this.#pipeline) {
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const opKeys = Object.keys(opExpr);
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const opName = opKeys[0];
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const call = (0, import_core.getOperator)("pipeline", opName, opts);
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(0, import_util.assert)(
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opKeys.length === 1 && !!call,
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`invalid pipeline operator ${opName}`
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);
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stages.push(opName);
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iter = call(iter, opExpr[opName], opts);
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}
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}
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if (mode & import_core.ProcessingMode.CLONE_OUTPUT) iter.map(import_util.cloneDeep);
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return iter;
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}
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/**
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* Return the results of the aggregation as an array.
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*
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* @param collection
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*/
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run(collection, options) {
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return this.stream(collection, options).value();
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}
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}
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// Annotate the CommonJS export names for ESM import in node:
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0 && (module.exports = {
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Aggregator
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});
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