polymer-analyzer
Version:
Static analysis for Web Components
84 lines • 3.91 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 parse5_1 = require("parse5");
const element_reference_1 = require("../model/element-reference");
const isCustomElement = dom5.predicates.hasMatchingTagName(/(.+-)+.+/);
/**
* Scans for HTML element references/uses in a given document.
* All elements will be detected, including anything in <head>.
* This scanner will not be loaded by default, but the custom
* element extension of it will be.
*/
class HtmlElementReferenceScanner {
matches(node) {
return !!node;
}
scan(document, visit) {
return __awaiter(this, void 0, void 0, function* () {
const elements = [];
const visitor = (node) => {
if (node.tagName && this.matches(node)) {
const element = new element_reference_1.ScannedElementReference(node.tagName, document.sourceRangeForNode(node), { language: 'html', containingDocument: document, node });
if (node.attrs) {
for (const attr of node.attrs) {
element.attributes.set(attr.name, {
name: attr.name,
value: attr.value,
sourceRange: document.sourceRangeForAttribute(node, attr.name),
nameSourceRange: document.sourceRangeForAttributeName(node, attr.name),
valueSourceRange: document.sourceRangeForAttributeValue(node, attr.name)
});
}
}
elements.push(element);
}
// Descend into templates.
if (node.tagName === 'template') {
const content = parse5_1.treeAdapters.default.getTemplateContent(node);
if (content) {
for (const n of dom5.depthFirst(content)) {
visitor(n);
}
}
}
};
yield visit(visitor);
return { features: elements };
});
}
}
exports.HtmlElementReferenceScanner = HtmlElementReferenceScanner;
/**
* Scans for custom element references/uses.
* All custom elements will be detected except <dom-module>.
* This is a default scanner.
*/
class HtmlCustomElementReferenceScanner extends HtmlElementReferenceScanner {
matches(node) {
return isCustomElement(node) && node.nodeName !== 'dom-module';
}
}
exports.HtmlCustomElementReferenceScanner = HtmlCustomElementReferenceScanner;
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