polymer-analyzer
Version:
Static analysis for Web Components
67 lines • 2.79 kB
JavaScript
;
/**
* @license
* Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
* This code may only be used under the BSD style license found at
* http://polymer.github.io/LICENSE.txt
* The complete set of authors may be found at
* http://polymer.github.io/AUTHORS.txt
* The complete set of contributors may be found at
* http://polymer.github.io/CONTRIBUTORS.txt
* Code distributed by Google as part of the polymer project is also
* subject to an additional IP rights grant found at
* http://polymer.github.io/PATENTS.txt
*/
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
class FailUrlLoader {
canLoad(_url) {
return true;
}
load(url) {
throw new Error(`${url} not known in InMemoryOverlayLoader`);
}
}
/**
* Resolves requests first from an in-memory map of file contents, and if a
* file isn't found there, defers to another url loader.
*
* Useful for the editor use case. An editor will have a number of files in open
* buffers at any time. For these files, the editor's in-memory buffer is
* canonical, so that their contents are read even when they have unsaved
* changes. For all other files, we can load the files using another loader,
* e.g. from disk.
*
* TODO(rictic): make this a mixin that mixes another loader.
*/
class InMemoryOverlayUrlLoader {
constructor(fallbackLoader) {
this.urlContentsMap = new Map();
this._fallbackLoader = fallbackLoader || new FailUrlLoader();
if (this._fallbackLoader.readDirectory) {
this.readDirectory =
this._fallbackLoader.readDirectory.bind(this._fallbackLoader);
}
}
canLoad(url) {
return this.urlContentsMap.has(url) || this._fallbackLoader.canLoad(url);
}
load(url) {
return __awaiter(this, void 0, void 0, function* () {
const contents = this.urlContentsMap.get(url);
if (typeof contents === 'string') {
return contents;
}
return this._fallbackLoader.load(url);
});
}
}
exports.InMemoryOverlayUrlLoader = InMemoryOverlayUrlLoader;
//# sourceMappingURL=overlay-loader.js.map