polymer-analyzer
Version:
Static analysis for Web Components
71 lines • 3.45 kB
JavaScript
;
/**
* @license
* Copyright (c) 2016 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 });
const dom5 = require("dom5/lib/index-next");
const model_1 = require("../model/model");
const p = dom5.predicates;
const linkTag = p.hasTagName('link');
const notCssLink = p.NOT(p.hasAttrValue('type', 'css'));
const isHtmlImportNode = p.AND(linkTag, p.hasAttr('href'), p.hasSpaceSeparatedAttrValue('rel', 'import'), p.NOT(p.hasSpaceSeparatedAttrValue('rel', 'lazy-import')), notCssLink, p.NOT(p.parentMatches(p.hasTagName('template'))));
const isLazyImportNode = p.AND(p.hasTagName('link'), p.hasSpaceSeparatedAttrValue('rel', 'lazy-import'), p.hasAttr('href'), p.NOT(p.hasSpaceSeparatedAttrValue('rel', 'import')), notCssLink, p.NOT(p.parentMatches(p.hasTagName('template'))));
/**
* Scans for <link rel="import"> and <link rel="lazy-import">
*/
class HtmlImportScanner {
constructor(_lazyEdges) {
this._lazyEdges = _lazyEdges;
}
scan(document, visit) {
return __awaiter(this, void 0, void 0, function* () {
const imports = [];
const type = 'html-import';
yield visit((node) => {
let lazy;
if (isHtmlImportNode(node)) {
lazy = false;
}
else if (isLazyImportNode(node)) {
lazy = true;
}
else {
return;
}
const href = dom5.getAttribute(node, 'href');
imports.push(new model_1.ScannedImport(type, href, document.sourceRangeForNode(node), document.sourceRangeForAttributeValue(node, 'href'), { language: 'html', node, containingDocument: document }, lazy));
});
if (this._lazyEdges) {
const edges = this._lazyEdges.get(document.url);
if (edges) {
for (const edge of edges) {
imports.push(new model_1.ScannedImport(type,
// This cast is very suspicious.
edge, undefined, undefined, undefined, true));
}
}
}
return { features: imports };
});
}
}
exports.HtmlImportScanner = HtmlImportScanner;
//# sourceMappingURL=html-import-scanner.js.map