budgie-cli/lib/converters/convertersBag.js

Node CLI for Budgie.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const createTypeScriptConverter_1 = require("./typescript/createTypeScriptConverter");
const typescriptConverter_1 = require("./typescript/typescriptConverter");
/**
 * Creates and caches converters per language extension.
 */
class ConvertersBag {
    constructor(creators, createConverterDependencies) {
        this.creators = creators;
        this.createConverterDependencies = createConverterDependencies;
        /**
         * Cached creation Promises for converters, keyed by language extension.
         */
        this.converters = new Map();
    }
    /**
     * Returns a cached converter, creating it as needed.
     *
     * @param languageExtension   Language extension to create for.
     * @returns Promise for the language's cached creator, if it exists, or an error during creation.
     */
    get(languageExtension) {
        return __awaiter(this, void 0, void 0, function* () {
            let creation = this.converters.get(languageExtension);
            if (creation === undefined) {
                creation = this.startCreation(languageExtension);
                this.converters.set(languageExtension, creation);
            }
            return creation;
        });
    }
    /**
     * Starts creation of a new converter, if the extension is known.
     *
     * @param languageExtension   Language extension to create for.
     * @returns Promise for the language's creator, or an error during creation.
     */
    startCreation(languageExtension) {
        return __awaiter(this, void 0, void 0, function* () {
            const creator = this.creators.get(languageExtension);
            return creator === undefined
                ? creator
                : creator(this.createConverterDependencies);
        });
    }
}
exports.ConvertersBag = ConvertersBag;
exports.createConvertersBag = (createConverterDependencies) => new ConvertersBag(new Map([
    [typescriptConverter_1.tsExtension, createTypeScriptConverter_1.createTypeScriptConverter],
]), createConverterDependencies);
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