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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /remote/test/puppeteer/packages/puppeteer-core/src/injected/PSelectorParser.ts
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'remote/test/puppeteer/packages/puppeteer-core/src/injected/PSelectorParser.ts')
-rw-r--r--remote/test/puppeteer/packages/puppeteer-core/src/injected/PSelectorParser.ts105
1 files changed, 105 insertions, 0 deletions
diff --git a/remote/test/puppeteer/packages/puppeteer-core/src/injected/PSelectorParser.ts b/remote/test/puppeteer/packages/puppeteer-core/src/injected/PSelectorParser.ts
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@@ -0,0 +1,105 @@
+/**
+ * @license
+ * Copyright 2023 Google Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import {type Token, tokenize, TOKENS, stringify} from 'parsel-js';
+
+export type CSSSelector = string;
+export interface PPseudoSelector {
+ name: string;
+ value: string;
+}
+export const enum PCombinator {
+ Descendent = '>>>',
+ Child = '>>>>',
+}
+export type CompoundPSelector = Array<CSSSelector | PPseudoSelector>;
+export type ComplexPSelector = Array<CompoundPSelector | PCombinator>;
+export type ComplexPSelectorList = ComplexPSelector[];
+
+TOKENS['combinator'] = /\s*(>>>>?|[\s>+~])\s*/g;
+
+const ESCAPE_REGEXP = /\\[\s\S]/g;
+const unquote = (text: string): string => {
+ if (text.length <= 1) {
+ return text;
+ }
+ if ((text[0] === '"' || text[0] === "'") && text.endsWith(text[0])) {
+ text = text.slice(1, -1);
+ }
+ return text.replace(ESCAPE_REGEXP, match => {
+ return match[1] as string;
+ });
+};
+
+export function parsePSelectors(
+ selector: string
+): [selector: ComplexPSelectorList, isPureCSS: boolean] {
+ let isPureCSS = true;
+ const tokens = tokenize(selector);
+ if (tokens.length === 0) {
+ return [[], isPureCSS];
+ }
+ let compoundSelector: CompoundPSelector = [];
+ let complexSelector: ComplexPSelector = [compoundSelector];
+ const selectors: ComplexPSelectorList = [complexSelector];
+ const storage: Token[] = [];
+ for (const token of tokens) {
+ switch (token.type) {
+ case 'combinator':
+ switch (token.content) {
+ case PCombinator.Descendent:
+ isPureCSS = false;
+ if (storage.length) {
+ compoundSelector.push(stringify(storage));
+ storage.splice(0);
+ }
+ compoundSelector = [];
+ complexSelector.push(PCombinator.Descendent);
+ complexSelector.push(compoundSelector);
+ continue;
+ case PCombinator.Child:
+ isPureCSS = false;
+ if (storage.length) {
+ compoundSelector.push(stringify(storage));
+ storage.splice(0);
+ }
+ compoundSelector = [];
+ complexSelector.push(PCombinator.Child);
+ complexSelector.push(compoundSelector);
+ continue;
+ }
+ break;
+ case 'pseudo-element':
+ if (!token.name.startsWith('-p-')) {
+ break;
+ }
+ isPureCSS = false;
+ if (storage.length) {
+ compoundSelector.push(stringify(storage));
+ storage.splice(0);
+ }
+ compoundSelector.push({
+ name: token.name.slice(3),
+ value: unquote(token.argument ?? ''),
+ });
+ continue;
+ case 'comma':
+ if (storage.length) {
+ compoundSelector.push(stringify(storage));
+ storage.splice(0);
+ }
+ compoundSelector = [];
+ complexSelector = [compoundSelector];
+ selectors.push(complexSelector);
+ continue;
+ }
+ storage.push(token);
+ }
+ if (storage.length) {
+ compoundSelector.push(stringify(storage));
+ }
+ return [selectors, isPureCSS];
+}