polymer-analyzer
Version:
Static analysis for Web Components
101 lines • 4.18 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 });
const shady = require("shady-css-parser");
class CssCustomPropertyScanner {
scan(document, visit) {
return __awaiter(this, void 0, void 0, function* () {
const warnings = [];
const visitor = new CssCustomPropertyVisitor(document);
yield visit(visitor);
return { features: visitor.features, warnings };
});
}
}
exports.CssCustomPropertyScanner = CssCustomPropertyScanner;
class CssCustomPropertyAssignment {
constructor(name, sourceRange, astNode) {
this.warnings = [];
this.kinds = new Set(['css-custom-property-assignment']);
this.identifiers = new Set([name]);
this.name = name;
this.sourceRange = sourceRange;
this.astNode = astNode;
}
resolve() {
return this;
}
}
exports.CssCustomPropertyAssignment = CssCustomPropertyAssignment;
class CssCustomPropertyUse {
constructor(name, sourceRange, astNode) {
this.warnings = [];
this.kinds = new Set(['css-custom-property-use']);
this.identifiers = new Set([name]);
this.sourceRange = sourceRange;
this.name = name;
this.astNode = astNode;
}
resolve() {
return this;
}
}
exports.CssCustomPropertyUse = CssCustomPropertyUse;
class CssCustomPropertyVisitor {
constructor(document) {
this.document = document;
this.features = [];
}
visit(node) {
if (node.type === shady.nodeType.declaration &&
node.name.startsWith('--')) {
this.features.push(new CssCustomPropertyAssignment(node.name, this.document.sourceRangeForShadyRange(node.nameRange), { language: 'css', node, containingDocument: this.document }));
}
else if (node.type === shady.nodeType.expression) {
this.getCustomPropertiesIn(node, node.text, node.range);
}
else if (node.type === shady.nodeType.atRule && node.parametersRange) {
this.getCustomPropertiesIn(node, node.parameters, node.parametersRange);
}
}
getCustomPropertiesIn(node, text, range) {
const matches = findAllMatchesInString(CssCustomPropertyVisitor.customPropRegex, text);
const baseOffset = range.start;
for (const { offset, matched } of matches) {
const range = this.document.sourceRangeForShadyRange({
start: offset + baseOffset,
end: offset + baseOffset + matched.length
});
this.features.push(new CssCustomPropertyUse(matched, range, { language: 'css', node, containingDocument: this.document }));
}
}
}
CssCustomPropertyVisitor.customPropRegex = /--[A-Za-z0-9_\-]+/;
function* findAllMatchesInString(regex, haystack) {
regex = new RegExp(regex, 'g');
let match;
while (match = regex.exec(haystack)) {
yield { offset: match.index, matched: match[0] };
}
}
//# sourceMappingURL=css-custom-property-scanner.js.map