diff --git a/.gitignore b/.gitignore index 403adbc..f32b652 100644 --- a/.gitignore +++ b/.gitignore @@ -21,3 +21,5 @@ pnpm-debug.log* *.njsproj *.sln *.sw? + +/files diff --git a/backend/lib/SocketTypes.js b/backend/lib/SocketTypes.js new file mode 100644 index 0000000..2ec987a --- /dev/null +++ b/backend/lib/SocketTypes.js @@ -0,0 +1,2 @@ +export const EDITOR_SESSION = 1 +export const TERMINAL_SESSION = 2 diff --git a/backend/package.json b/backend/package.json index e8884dd..d2630ce 100644 --- a/backend/package.json +++ b/backend/package.json @@ -7,7 +7,10 @@ "dependencies": { "body-parser": "^1.19.0", "express": "^4.17.1", + "lib0": "^0.2.42", "node-pty": "^0.10.1", - "ws": "^8.2.3" + "ws": "^8.2.3", + "y-protocols": "^1.0.5", + "yjs": "^13.5.18" } } diff --git a/backend/src/containers.js b/backend/src/containers.js index 543d9db..2623b77 100644 --- a/backend/src/containers.js +++ b/backend/src/containers.js @@ -28,7 +28,6 @@ export function getContainerShell (containerId, shell = 'sh') { } export function startContainer (image = 'alpine', cmd = ['sh', '-c', 'while true; do sleep 1d; done']) { - console.log(['run', '-d', '-l', config.containerLabel, image, ...cmd]) return exec(config.containerBinary, ['run', '--rm', '-d', '-l', config.containerLabel, image, ...cmd]) } diff --git a/backend/src/editor.js b/backend/src/editor.js new file mode 100644 index 0000000..85c0722 --- /dev/null +++ b/backend/src/editor.js @@ -0,0 +1,229 @@ +// Mostly adopted from: https://github.com/yjs/y-websocket + +import * as awarenessProtocol from 'y-protocols/awareness.js' +import * as syncProtocol from 'y-protocols/sync.js' +import { Doc } from 'yjs' + +import { decoding, encoding, map } from 'lib0' + +import { readFile, stat, writeFile } from 'fs/promises' +import { fileURLToPath } from 'url' +import path from 'path' + +export async function upgrade (sessions, request, reqPath) { + // todo: check auth and project + + // todo: check dir traversal + request.editorFile = `${path.dirname(fileURLToPath(import.meta.url))}/../../files/${reqPath[3]}` + + return true +} + +export async function connection (ws, req) { + ws.binaryType = 'arraybuffer' + + // get doc, initialize if it does not exist yet + const doc = getYDoc(req.editorFile) + doc.conns.set(ws, new Set()) + + // listen and reply to events + ws.on('message', message => messageListener(ws, doc, new Uint8Array(message))) + + // Check if connection is still alive + let pongReceived = true + const pingInterval = setInterval(() => { + if (!pongReceived) { + if (doc.conns.has(ws)) { + closeConn(doc, ws) + } + clearInterval(pingInterval) + } else if (doc.conns.has(ws)) { + pongReceived = false + try { + ws.ping() + } catch (e) { + closeConn(doc, ws) + clearInterval(pingInterval) + } + } + }, pingTimeout) + + ws.on('close', () => { + closeConn(doc, ws) + clearInterval(pingInterval) + }) + + ws.on('pong', () => { + pongReceived = true + }) + + // put the following in a variables in a block so the interval handlers don't keep in in + // scope + { + // send sync step 1 + const encoder = encoding.createEncoder() + encoding.writeVarUint(encoder, messageSync) + syncProtocol.writeSyncStep1(encoder, doc) + send(doc, ws, encoding.toUint8Array(encoder)) + const awarenessStates = doc.awareness.getStates() + if (awarenessStates.size > 0) { + const encoder = encoding.createEncoder() + encoding.writeVarUint(encoder, messageAwareness) + encoding.writeVarUint8Array(encoder, awarenessProtocol.encodeAwarenessUpdate(doc.awareness, Array.from(awarenessStates.keys()))) + send(doc, ws, encoding.toUint8Array(encoder)) + } + } + + return true +} + +const messageSync = 0 +const messageAwareness = 1 + +const wsReadyStateConnecting = 0 +const wsReadyStateOpen = 1 +const wsReadyStateClosing = 2 +const wsReadyStateClosed = 3 + +const pingTimeout = 30000 + +const docs = new Map() + +class WSSharedDoc extends Doc { + /** + * @param {string} name + */ + constructor (name) { + super({ gc: true }) + this.name = name + + this.conns = new Map() + + this.awareness = new awarenessProtocol.Awareness(this) + + this.awareness.setLocalState(null) + + const awarenessChangeHandler = ({ added, updated, removed }, conn) => { + const changedClients = added.concat(updated, removed) + if (conn !== null) { + const connControlledIDs = this.conns.get(conn) + + if (connControlledIDs !== undefined) { + added.forEach(clientID => connControlledIDs.add(clientID)) + removed.forEach(clientID => connControlledIDs.delete(clientID)) + } + } + // broadcast awareness update + const encoder = encoding.createEncoder() + encoding.writeVarUint(encoder, messageAwareness) + encoding.writeVarUint8Array(encoder, awarenessProtocol.encodeAwarenessUpdate(this.awareness, changedClients)) + const buff = encoding.toUint8Array(encoder) + this.conns.forEach((_, c) => { + send(this, c, buff) + }) + } + + this.awareness.on('update', awarenessChangeHandler) + + this.on('update', updateHandler) + } +} + +const updateHandler = (update, origin, doc) => { + const encoder = encoding.createEncoder() + encoding.writeVarUint(encoder, messageSync) + syncProtocol.writeUpdate(encoder, update) + + const message = encoding.toUint8Array(encoder) + doc.conns.forEach((_, conn) => send(doc, conn, message)) + + writeUpdate(doc) +} + +const debounce = (func, wait, immediate) => { + let timeout + return (...args) => { + let context = this + let later = () => { + timeout = null + if (!immediate) func.apply(context, args) + } + let callNow = immediate && !timeout + clearTimeout(timeout) + timeout = setTimeout(later, wait) + if (callNow) func.apply(context, args) + } +} + +const writeUpdate = debounce(async doc => { + await writeFile(doc.name, doc.getText('monaco').toJSON()) +}, 2000) + +const getYDoc = file => map.setIfUndefined(docs, file, () => { + + const doc = new WSSharedDoc(file) + + doc.gc = true + docs.set(file, doc) + + stat(file) + .then(() => { + return readFile(file, { encoding: 'utf8' }) + }) + .then(content => { + const text = doc.getText('monaco') + text.insert(0, content) + }) + .catch(() => { + // new file + }) + + return doc +}) + +const messageListener = (conn, doc, message) => { + try { + const encoder = encoding.createEncoder() + const decoder = decoding.createDecoder(message) + const messageType = decoding.readVarUint(decoder) + switch (messageType) { + case messageSync: + encoding.writeVarUint(encoder, messageSync) + syncProtocol.readSyncMessage(decoder, encoder, doc, null) + if (encoding.length(encoder) > 1) { + send(doc, conn, encoding.toUint8Array(encoder)) + } + break + case messageAwareness: { + awarenessProtocol.applyAwarenessUpdate(doc.awareness, decoding.readVarUint8Array(decoder), conn) + break + } + } + } catch (err) { + console.error(err) + doc.emit('error', [err]) + } +} + +const send = (doc, conn, m) => { + if (conn.readyState !== wsReadyStateConnecting && conn.readyState !== wsReadyStateOpen) { + console.log(conn.readyState) + closeConn(doc, conn) + } + try { + conn.send(m, err => { err != null && closeConn(doc, conn) }) + } catch (e) { + closeConn(doc, conn) + } +} + +const closeConn = (doc, conn) => { + if (doc.conns.has(conn)) { + const controlledIds = doc.conns.get(conn) + doc.conns.delete(conn) + awarenessProtocol.removeAwarenessStates(doc.awareness, Array.from(controlledIds), null) + docs.delete(doc.name) + } + + conn.close() +} diff --git a/backend/src/shell.js b/backend/src/shell.js new file mode 100644 index 0000000..5046226 --- /dev/null +++ b/backend/src/shell.js @@ -0,0 +1,45 @@ +import { containerExists, getContainerShell } from './containers.js' + +export async function upgrade(sessions, request, path) { + const [container, sessionId] = path.splice(2) + const session = sessions[sessionId] + + if (session && session.container !== container) { + console.log('wrong session') + return false + } + + if (!(await containerExists(container))) { + console.log('no container') + return false + } + + if (!session) { + sessions[sessionId] = { container } + } + + request.session = sessions[sessionId] + + return true +} + +export async function connection(ws, req) { + if (!req.session.term) { + req.session.term = getContainerShell(req.session.container) + } + + ws.on('message', message => { + const decoded = message.toString() + + req.session.term.write(decoded) + }) + + req.session.term.onData(data => { + ws.send(data) + }) + + req.session.term.onExit(exit => { + ws.send(`Process terminated with code ${exit.exitCode}`) + ws.close() + }) +} diff --git a/backend/src/websocket.js b/backend/src/websocket.js index 3572a92..cb798db 100644 --- a/backend/src/websocket.js +++ b/backend/src/websocket.js @@ -1,63 +1,47 @@ -import { containerExists, getContainerShell } from './containers.js' import { WebSocketServer } from 'ws' +import { EDITOR_SESSION, TERMINAL_SESSION } from '../lib/SocketTypes.js' +import { upgrade as upgradeShell, connection as connectionShell } from './shell.js' +import { upgrade as upgradeEditor, connection as connectionEditor } from './editor.js' export default (server, sessions) => { const wss = new WebSocketServer({ noServer: true }) server.on('upgrade', async (request, socket, head) => { const forbidden = () => { - socket.write('HTTP/1.1 401 Unauthorized\r\n\r\n'); - socket.destroy(); + socket.write('HTTP/1.1 401 Unauthorized\r\n\r\n') + socket.destroy() } const path = request.url.substr(1).split('/') - if (path.length !== 3 || path[0] !== 'ws') { + if (path.length < 1 || path[0] !== 'ws') { return forbidden() } - const [_, container, sessionId] = path - const session = sessions[sessionId] + if (path.length > 3 && path[1] === 'editor' && (await upgradeEditor(sessions, request, path))) { + // /ws/editor/:project/:path + request.type = EDITOR_SESSION - if (session && session.container !== container) { - console.log('wrong session') + } else if (path.length === 4 && path[1] === 'terminal' && (await upgradeShell(sessions, request, path))) { + // /ws/terminal/:container/:session + request.type = TERMINAL_SESSION + + } else { return forbidden() } - if (!(await containerExists(container))) { - console.log('no container') - return forbidden() - } - - if (!session) { - sessions[sessionId] = { container } - } - - request.session = sessions[sessionId] - wss.handleUpgrade(request, socket, head, ws => { - wss.emit('connection', ws, request); - }); + wss.emit('connection', ws, request) + }) }) - wss.on('connection', (ws, req) => { - if (!req.session.term) { - req.session.term = getContainerShell(req.session.container) + wss.on('connection', async (ws, req) => { + if (req.type === EDITOR_SESSION) { + await connectionEditor(ws, req) } - ws.on('message', message => { - const decoded = message.toString() - - req.session.term.write(decoded) - }) - - req.session.term.onData(data => { - ws.send(data) - }) - - req.session.term.onExit(exit => { - ws.send(`Process terminated with code ${exit.exitCode}`) - ws.close() - }) + if (req.type === TERMINAL_SESSION) { + await connectionShell(ws, req) + } }) } diff --git a/backend/yarn.lock b/backend/yarn.lock index 519d204..74908f4 100644 --- a/backend/yarn.lock +++ b/backend/yarn.lock @@ -198,6 +198,18 @@ ipaddr.js@1.9.1: resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.9.1.tgz#bff38543eeb8984825079ff3a2a8e6cbd46781b3" integrity sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g== +isomorphic.js@^0.2.4: + version "0.2.4" + resolved "https://registry.yarnpkg.com/isomorphic.js/-/isomorphic.js-0.2.4.tgz#24ca374163ae54a7ce3b86ce63b701b91aa84969" + integrity sha512-Y4NjZceAwaPXctwsHgNsmfuPxR8lJ3f8X7QTAkhltrX4oGIv+eTlgHLXn4tWysC9zGTi929gapnPp+8F8cg7nA== + +lib0@^0.2.42: + version "0.2.42" + resolved "https://registry.yarnpkg.com/lib0/-/lib0-0.2.42.tgz#6d8bf1fb8205dec37a953c521c5ee403fd8769b0" + integrity sha512-8BNM4MiokEKzMvSxTOC3gnCBisJH+jL67CnSnqzHv3jli3pUvGC8wz+0DQ2YvGr4wVQdb2R2uNNPw9LEpVvJ4Q== + dependencies: + isomorphic.js "^0.2.4" + media-typer@0.3.0: version "0.3.0" resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748" @@ -383,3 +395,17 @@ ws@^8.2.3: version "8.2.3" resolved "https://registry.yarnpkg.com/ws/-/ws-8.2.3.tgz#63a56456db1b04367d0b721a0b80cae6d8becbba" integrity sha512-wBuoj1BDpC6ZQ1B7DWQBYVLphPWkm8i9Y0/3YdHjHKHiohOJ1ws+3OccDWtH+PoC9DZD5WOTrJvNbWvjS6JWaA== + +y-protocols@^1.0.5: + version "1.0.5" + resolved "https://registry.yarnpkg.com/y-protocols/-/y-protocols-1.0.5.tgz#91d574250060b29fcac8f8eb5e276fbad594245e" + integrity sha512-Wil92b7cGk712lRHDqS4T90IczF6RkcvCwAD0A2OPg+adKmOe+nOiT/N2hvpQIWS3zfjmtL4CPaH5sIW1Hkm/A== + dependencies: + lib0 "^0.2.42" + +yjs@^13.5.18: + version "13.5.18" + resolved "https://registry.yarnpkg.com/yjs/-/yjs-13.5.18.tgz#4151f381b170726b69be26296fd84b2efdc82e6e" + integrity sha512-6LcTL8gRe12fy89OvXG6Xs/uhsl7iwE4Wh106H1NItkcqcUaY2waTje1NVWmOZNXHXWVAzdf/fBQqB4Phq9sGA== + dependencies: + lib0 "^0.2.42" diff --git a/frontend/dist/css.worker.js 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Z({sendMessage:(t,n)=>{e(t,n)},handleMessage:(e,t)=>this._handleMessage(e,t),handleEvent:(e,t)=>this._handleEvent(e,t)})}onmessage(e){this._protocol.handleMessage(e)}_handleMessage(e,t){if(e===$)return this.initialize(t[0],t[1],t[2],t[3]);if(!this._requestHandler||"function"!==typeof this._requestHandler[e])return Promise.reject(new Error("Missing requestHandler or method: "+e));try{return Promise.resolve(this._requestHandler[e].apply(this._requestHandler,t))}catch(n){return Promise.reject(n)}}_handleEvent(e,t){if(!this._requestHandler)throw new Error("Missing requestHandler");if(ee(e)){const n=this._requestHandler[e].call(this._requestHandler,t);if("function"!==typeof n)throw new Error(`Missing dynamic event ${e} on request handler.`);return n}if(Q(e)){const t=this._requestHandler[e];if("function"!==typeof t)throw new Error(`Missing event ${e} on request handler.`);return t}throw new Error("Malformed event name "+e)}initialize(e,t,n,r){this._protocol.setWorkerId(e);const i=(e,t)=>this._protocol.sendMessage(e,t),o=(e,t)=>this._protocol.listen(e,t),s=te(r,i,o);return this._requestHandlerFactory?(this._requestHandler=this._requestHandlerFactory(s),Promise.resolve(M(this._requestHandler))):(t&&("undefined"!==typeof t.baseUrl&&delete t["baseUrl"],"undefined"!==typeof t.paths&&"undefined"!==typeof t.paths.vs&&delete t.paths["vs"],void 0!==typeof t.trustedTypesPolicy&&delete t["trustedTypesPolicy"],t.catchError=!0,E["a"].require.config(t)),new Promise((e,t)=>{const r=E["a"].require;r([n],n=>{this._requestHandler=n.create(s),this._requestHandler?e(M(this._requestHandler)):t(new Error("No RequestHandler!"))},t)}))}}class re{constructor(e,t,n,r){this.originalStart=e,this.originalLength=t,this.modifiedStart=n,this.modifiedLength=r}getOriginalEnd(){return this.originalStart+this.originalLength}getModifiedEnd(){return this.modifiedStart+this.modifiedLength}}function ie(e,t){return(t<<5)-t+e|0}function oe(e,t){t=ie(149417,t);for(let n=0,r=e.length;n>>r)>>>0}function 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re(this.m_originalStart,this.m_originalCount,this.m_modifiedStart,this.m_modifiedCount)),this.m_originalCount=0,this.m_modifiedCount=0,this.m_originalStart=1073741824,this.m_modifiedStart=1073741824}AddOriginalElement(e,t){this.m_originalStart=Math.min(this.m_originalStart,e),this.m_modifiedStart=Math.min(this.m_modifiedStart,t),this.m_originalCount++}AddModifiedElement(e,t){this.m_originalStart=Math.min(this.m_originalStart,e),this.m_modifiedStart=Math.min(this.m_modifiedStart,t),this.m_modifiedCount++}getChanges(){return(this.m_originalCount>0||this.m_modifiedCount>0)&&this.MarkNextChange(),this.m_changes}getReverseChanges(){return(this.m_originalCount>0||this.m_modifiedCount>0)&&this.MarkNextChange(),this.m_changes.reverse(),this.m_changes}}class ge{constructor(e,t,n=null){this.ContinueProcessingPredicate=n,this._originalSequence=e,this._modifiedSequence=t;const[r,i,o]=ge._getElements(e),[s,a,l]=ge._getElements(t);this._hasStrings=o&&l,this._originalStringElements=r,this._originalElementsOrHash=i,this._modifiedStringElements=s,this._modifiedElementsOrHash=a,this.m_forwardHistory=[],this.m_reverseHistory=[]}static _isStringArray(e){return e.length>0&&"string"===typeof e[0]}static _getElements(e){const t=e.getElements();if(ge._isStringArray(t)){const e=new Int32Array(t.length);for(let n=0,r=t.length;n=e&&r>=n&&this.ElementsAreEqual(t,r))t--,r--;if(e>t||n>r){let i;return n<=r?(ue.Assert(e===t+1,"originalStart should only be one more than originalEnd"),i=[new re(e,0,n,r-n+1)]):e<=t?(ue.Assert(n===r+1,"modifiedStart should only be one more than modifiedEnd"),i=[new re(e,t-e+1,n,0)]):(ue.Assert(e===t+1,"originalStart should only be one more than originalEnd"),ue.Assert(n===r+1,"modifiedStart should only be one more than 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n=[],r=[];for(const i of t){const[e,t,o,s,a,l,c,d,h,p]=i;if(r[o]||(r[o]=!0,Ht[o]=s,Gt[s]=o,Jt[s.toLowerCase()]=o,t&&(Xt[o]=a,0!==a&&3!==a&&5!==a&&4!==a&&6!==a&&57!==a&&(Yt[a]=o))),!n[a]){if(n[a]=!0,!l)throw new Error(`String representation missing for key code ${a} around scan code ${s}`);Kt.define(a,l),jt.define(a,h||l),Bt.define(a,p||h||l)}c&&(qt[c]=a),d&&($t[d]=a)}Yt[3]=46})(),function(e){function t(e){return Kt.keyCodeToStr(e)}function n(e){return Kt.strToKeyCode(e)}function r(e){return jt.keyCodeToStr(e)}function i(e){return Bt.keyCodeToStr(e)}function o(e){return jt.strToKeyCode(e)||Bt.strToKeyCode(e)}function s(e){if(e>=93&&e<=108)return null;switch(e){case 16:return"Up";case 18:return"Down";case 15:return"Left";case 17:return"Right"}return Kt.keyCodeToStr(e)}e.toString=t,e.fromString=n,e.toUserSettingsUS=r,e.toUserSettingsGeneral=i,e.fromUserSettings=o,e.toElectronAccelerator=s}(Zt||(Zt={}));class Pn extends rt{constructor(e,t,n,r){super(e,t,n,r),this.selectionStartLineNumber=e,this.selectionStartColumn=t,this.positionLineNumber=n,this.positionColumn=r}toString(){return"["+this.selectionStartLineNumber+","+this.selectionStartColumn+" -> "+this.positionLineNumber+","+this.positionColumn+"]"}equalsSelection(e){return Pn.selectionsEqual(this,e)}static selectionsEqual(e,t){return e.selectionStartLineNumber===t.selectionStartLineNumber&&e.selectionStartColumn===t.selectionStartColumn&&e.positionLineNumber===t.positionLineNumber&&e.positionColumn===t.positionColumn}getDirection(){return this.selectionStartLineNumber===this.startLineNumber&&this.selectionStartColumn===this.startColumn?0:1}setEndPosition(e,t){return 0===this.getDirection()?new Pn(this.startLineNumber,this.startColumn,e,t):new Pn(e,t,this.startLineNumber,this.startColumn)}getPosition(){return new nt(this.positionLineNumber,this.positionColumn)}setStartPosition(e,t){return 0===this.getDirection()?new 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This keyword can be considered a shorthand for rgba(0,0,0,0) which is its computed value."};function To(e,t){var n=e.getText(),r=n.match(/^([-+]?[0-9]*\.?[0-9]+)(%?)$/);if(r){r[2]&&(t=100);var i=parseFloat(r[1])/t;if(i>=0&&i<=1)return i}throw new Error}function No(e){var t=e.getText(),n=t.match(/^([-+]?[0-9]*\.?[0-9]+)(deg)?$/);if(n)return parseFloat(t)%360;throw new Error}function Ro(e){var t=e.getName();return!!t&&/^(rgb|rgba|hsl|hsla)$/gi.test(t)}var Ao=48,zo=57,Io=65,Mo=97,Po=102;function Oo(e){return e=Mo&&e<=Po?e-Mo+10:0)}function Lo(e){if("#"!==e[0])return null;switch(e.length){case 4:return{red:17*Oo(e.charCodeAt(1))/255,green:17*Oo(e.charCodeAt(2))/255,blue:17*Oo(e.charCodeAt(3))/255,alpha:1};case 5:return{red:17*Oo(e.charCodeAt(1))/255,green:17*Oo(e.charCodeAt(2))/255,blue:17*Oo(e.charCodeAt(3))/255,alpha:17*Oo(e.charCodeAt(4))/255};case 7:return{red:(16*Oo(e.charCodeAt(1))+Oo(e.charCodeAt(2)))/255,green:(16*Oo(e.charCodeAt(3))+Oo(e.charCodeAt(4)))/255,blue:(16*Oo(e.charCodeAt(5))+Oo(e.charCodeAt(6)))/255,alpha:1};case 9:return{red:(16*Oo(e.charCodeAt(1))+Oo(e.charCodeAt(2)))/255,green:(16*Oo(e.charCodeAt(3))+Oo(e.charCodeAt(4)))/255,blue:(16*Oo(e.charCodeAt(5))+Oo(e.charCodeAt(6)))/255,alpha:(16*Oo(e.charCodeAt(7))+Oo(e.charCodeAt(8)))/255}}return null}function Wo(e,t,n,r){if(void 0===r&&(r=1),e/=60,0===t)return{red:n,green:n,blue:n,alpha:r};var i=function(e,t,n){while(n<0)n+=6;while(n>=6)n-=6;return n<1?(t-e)*n+e:n<3?t:n<4?(t-e)*(4-n)+e:e},o=n<=.5?n*(t+1):n+t-n*t,s=2*n-o;return{red:i(s,o,e+2),green:i(s,o,e),blue:i(s,o,e-2),alpha:r}}function Vo(e){var t=e.red,n=e.green,r=e.blue,i=e.alpha,o=Math.max(t,n,r),s=Math.min(t,n,r),a=0,l=0,c=(s+o)/2,d=o-s;if(d>0){switch(l=Math.min(c<=.5?d/(2*c):d/(2-2*c),1),o){case t:a=(n-r)/d+(n4)return null;try{var o=4===i.length?To(i[3],1):1;if("rgb"===r||"rgba"===r)return{red:To(i[0],255),green:To(i[1],255),blue:To(i[2],255),alpha:o};if("hsl"===r||"hsla"===r){var s=No(i[0]),a=To(i[1],100),l=To(i[2],100);return Wo(s,a,l,o)}}catch(u){return null}}else if(e.type===Kr.Identifier){if(e.parent&&e.parent.type!==Kr.Term)return null;var c=e.parent;if(c&&c.parent&&c.parent.type===Kr.BinaryExpression){var d=c.parent;if(d.parent&&d.parent.type===Kr.ListEntry&&d.parent.key===d)return null}var h=e.getText().toLowerCase();if("none"===h)return null;var p=Fo[h];if(p)return Lo(p)}return null}var Ko={bottom:"Computes to ‘100%’ for the vertical position if one or two values are given, otherwise specifies the bottom edge as the origin for the next offset.",center:"Computes to ‘50%’ (‘left 50%’) for the horizontal position if the horizontal position is not otherwise specified, or ‘50%’ (‘top 50%’) for the vertical position if it is.",left:"Computes to ‘0%’ for the horizontal position if one or two values are given, otherwise specifies the left edge as the origin for the next offset.",right:"Computes to ‘100%’ for the horizontal position if one or two values are given, otherwise specifies the right edge as the origin for the next offset.",top:"Computes to ‘0%’ for the vertical position if one or two values are given, otherwise specifies the top edge as the origin for the next offset."},jo={"no-repeat":"Placed once and not repeated in this direction.",repeat:"Repeated in this direction as often as needed to cover the background painting area.","repeat-x":"Computes to ‘repeat no-repeat’.","repeat-y":"Computes to ‘no-repeat repeat’.",round:"Repeated as often as will fit within the background positioning area. If it doesn’t fit a whole number of times, it is rescaled so that it does.",space:"Repeated as often as will fit within the background positioning area without being clipped and then the images are spaced out to fill the area."},Bo={dashed:"A series of square-ended dashes.",dotted:"A series of round dots.",double:"Two parallel solid lines with some space between them.",groove:"Looks as if it were carved in the canvas.",hidden:"Same as ‘none’, but has different behavior in the border conflict resolution rules for border-collapsed tables.",inset:"Looks as if the content on the inside of the border is sunken into the canvas.",none:"No border. Color and width are ignored.",outset:"Looks as if the content on the inside of the border is coming out of the canvas.",ridge:"Looks as if it were coming out of the canvas.",solid:"A single line segment."},qo=["medium","thick","thin"],$o={"border-box":"The background is painted within (clipped to) the border box.","content-box":"The background is painted within (clipped to) the content box.","padding-box":"The background is painted within (clipped to) the padding box."},Ho={"margin-box":"Uses the margin box as reference box.","fill-box":"Uses the object bounding box as reference box.","stroke-box":"Uses the stroke bounding box as reference box.","view-box":"Uses the nearest SVG viewport as reference box."},Go={initial:"Represents the value specified as the property’s initial value.",inherit:"Represents the computed value of the property on the element’s parent.",unset:"Acts as either `inherit` or `initial`, depending on whether the property is inherited or not."},Jo={"var()":"Evaluates the value of a custom variable.","calc()":"Evaluates an mathematical expression. The following operators can be used: + - * /."},Xo={"url()":"Reference an image file by URL","image()":"Provide image fallbacks and annotations.","-webkit-image-set()":"Provide multiple resolutions. Remember to use unprefixed image-set() in addition.","image-set()":"Provide multiple resolutions of an image and const the UA decide which is most appropriate in a given situation.","-moz-element()":"Use an element in the document as an image. Remember to use unprefixed element() in addition.","element()":"Use an element in the document as an image.","cross-fade()":"Indicates the two images to be combined and how far along in the transition the combination is.","-webkit-gradient()":"Deprecated. Use modern linear-gradient() or radial-gradient() instead.","-webkit-linear-gradient()":"Linear gradient. Remember to use unprefixed version in addition.","-moz-linear-gradient()":"Linear gradient. Remember to use unprefixed version in addition.","-o-linear-gradient()":"Linear gradient. Remember to use unprefixed version in addition.","linear-gradient()":"A linear gradient is created by specifying a straight gradient line, and then several colors placed along that line.","-webkit-repeating-linear-gradient()":"Repeating Linear gradient. Remember to use unprefixed version in addition.","-moz-repeating-linear-gradient()":"Repeating Linear gradient. Remember to use unprefixed version in addition.","-o-repeating-linear-gradient()":"Repeating Linear gradient. Remember to use unprefixed version in addition.","repeating-linear-gradient()":"Same as linear-gradient, except the color-stops are repeated infinitely in both directions, with their positions shifted by multiples of the difference between the last specified color-stop’s position and the first specified color-stop’s position.","-webkit-radial-gradient()":"Radial gradient. Remember to use unprefixed version in addition.","-moz-radial-gradient()":"Radial gradient. Remember to use unprefixed version in addition.","radial-gradient()":"Colors emerge from a single point and smoothly spread outward in a circular or elliptical shape.","-webkit-repeating-radial-gradient()":"Repeating radial gradient. Remember to use unprefixed version in addition.","-moz-repeating-radial-gradient()":"Repeating radial gradient. Remember to use unprefixed version in addition.","repeating-radial-gradient()":"Same as radial-gradient, except the color-stops are repeated infinitely in both directions, with their positions shifted by multiples of the difference between the last specified color-stop’s position and the first specified color-stop’s position."},Yo={ease:"Equivalent to cubic-bezier(0.25, 0.1, 0.25, 1.0).","ease-in":"Equivalent to cubic-bezier(0.42, 0, 1.0, 1.0).","ease-in-out":"Equivalent to cubic-bezier(0.42, 0, 0.58, 1.0).","ease-out":"Equivalent to cubic-bezier(0, 0, 0.58, 1.0).",linear:"Equivalent to cubic-bezier(0.0, 0.0, 1.0, 1.0).","step-end":"Equivalent to steps(1, end).","step-start":"Equivalent to steps(1, start).","steps()":"The first parameter specifies the number of intervals in the function. The second parameter, which is optional, is either the value “start” or “end”.","cubic-bezier()":"Specifies a cubic-bezier curve. The four values specify points P1 and P2 of the curve as (x1, y1, x2, y2).","cubic-bezier(0.6, -0.28, 0.735, 0.045)":"Ease-in Back. Overshoots.","cubic-bezier(0.68, -0.55, 0.265, 1.55)":"Ease-in-out Back. Overshoots.","cubic-bezier(0.175, 0.885, 0.32, 1.275)":"Ease-out Back. Overshoots.","cubic-bezier(0.6, 0.04, 0.98, 0.335)":"Ease-in Circular. Based on half circle.","cubic-bezier(0.785, 0.135, 0.15, 0.86)":"Ease-in-out Circular. Based on half circle.","cubic-bezier(0.075, 0.82, 0.165, 1)":"Ease-out Circular. Based on half circle.","cubic-bezier(0.55, 0.055, 0.675, 0.19)":"Ease-in Cubic. Based on power of three.","cubic-bezier(0.645, 0.045, 0.355, 1)":"Ease-in-out Cubic. Based on power of three.","cubic-bezier(0.215, 0.610, 0.355, 1)":"Ease-out Cubic. Based on power of three.","cubic-bezier(0.95, 0.05, 0.795, 0.035)":"Ease-in Exponential. Based on two to the power ten.","cubic-bezier(1, 0, 0, 1)":"Ease-in-out Exponential. Based on two to the power ten.","cubic-bezier(0.19, 1, 0.22, 1)":"Ease-out Exponential. Based on two to the power ten.","cubic-bezier(0.47, 0, 0.745, 0.715)":"Ease-in Sine.","cubic-bezier(0.445, 0.05, 0.55, 0.95)":"Ease-in-out Sine.","cubic-bezier(0.39, 0.575, 0.565, 1)":"Ease-out Sine.","cubic-bezier(0.55, 0.085, 0.68, 0.53)":"Ease-in Quadratic. Based on power of two.","cubic-bezier(0.455, 0.03, 0.515, 0.955)":"Ease-in-out Quadratic. Based on power of two.","cubic-bezier(0.25, 0.46, 0.45, 0.94)":"Ease-out Quadratic. Based on power of two.","cubic-bezier(0.895, 0.03, 0.685, 0.22)":"Ease-in Quartic. Based on power of four.","cubic-bezier(0.77, 0, 0.175, 1)":"Ease-in-out Quartic. Based on power of four.","cubic-bezier(0.165, 0.84, 0.44, 1)":"Ease-out Quartic. Based on power of four.","cubic-bezier(0.755, 0.05, 0.855, 0.06)":"Ease-in Quintic. Based on power of five.","cubic-bezier(0.86, 0, 0.07, 1)":"Ease-in-out Quintic. Based on power of five.","cubic-bezier(0.23, 1, 0.320, 1)":"Ease-out Quintic. Based on power of five."},Zo={"circle()":"Defines a circle.","ellipse()":"Defines an ellipse.","inset()":"Defines an inset rectangle.","polygon()":"Defines a 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rs(e){return Object.keys(e).map((function(t){return e[t]}))}function is(e){return"undefined"!==typeof e}var os=function(e,t,n){if(n||2===arguments.length)for(var r,i=0,o=t.length;ie.offset?i-e.offset:0}return e},e.prototype.markError=function(e,t,n,r){this.token!==this.lastErrorToken&&(e.addIssue(new co(e,t,Gr.Error,void 0,this.token.offset,this.token.len)),this.lastErrorToken=this.token),(n||r)&&this.resync(n,r)},e.prototype.parseStylesheet=function(e){var t=e.version,n=e.getText(),r=function(r,i){if(e.version!==t)throw new Error("Underlying model has changed, AST is no longer valid");return n.substr(r,i)};return this.internalParse(n,this._parseStylesheet,r)},e.prototype.internalParse=function(e,t,n){this.scanner.setSource(e),this.token=this.scanner.scan();var r=t.bind(this)();return r&&(r.textProvider=n||function(t,n){return e.substr(t,n)}),r},e.prototype._parseStylesheet=function(){var e=this.create(Zr);while(e.addChild(this._parseStylesheetStart()));var t=!1;do{var n=!1;do{n=!1;var r=this._parseStylesheetStatement();r&&(e.addChild(r),n=!0,t=!1,this.peek(qn.EOF)||!this._needsSemicolonAfter(r)||this.accept(qn.SemiColon)||this.markError(e,bo.SemiColonExpected));while(this.accept(qn.SemiColon)||this.accept(qn.CDO)||this.accept(qn.CDC))n=!0,t=!1}while(n);if(this.peek(qn.EOF))break;t||(this.peek(qn.AtKeyword)?this.markError(e,bo.UnknownAtRule):this.markError(e,bo.RuleOrSelectorExpected),t=!0),this.consumeToken()}while(!this.peek(qn.EOF));return this.finish(e)},e.prototype._parseStylesheetStart=function(){return this._parseCharset()},e.prototype._parseStylesheetStatement=function(e){return void 0===e&&(e=!1),this.peek(qn.AtKeyword)?this._parseStylesheetAtStatement(e):this._parseRuleset(e)},e.prototype._parseStylesheetAtStatement=function(e){return void 0===e&&(e=!1),this._parseImport()||this._parseMedia(e)||this._parsePage()||this._parseFontFace()||this._parseKeyframe()||this._parseSupports(e)||this._parseViewPort()||this._parseNamespace()||this._parseDocument()||this._parseUnknownAtRule()},e.prototype._tryParseRuleset=function(e){var t=this.mark();if(this._parseSelector(e)){while(this.accept(qn.Comma)&&this._parseSelector(e));if(this.accept(qn.CurlyL))return this.restoreAtMark(t),this._parseRuleset(e)}return this.restoreAtMark(t),null},e.prototype._parseRuleset=function(e){void 0===e&&(e=!1);var t=this.create(ti),n=t.getSelectors();if(!n.addChild(this._parseSelector(e)))return null;while(this.accept(qn.Comma))if(!n.addChild(this._parseSelector(e)))return this.finish(t,bo.SelectorExpected);return this._parseBody(t,this._parseRuleSetDeclaration.bind(this))},e.prototype._parseRuleSetDeclarationAtStatement=function(){return this._parseUnknownAtRule()},e.prototype._parseRuleSetDeclaration=function(){return this.peek(qn.AtKeyword)?this._parseRuleSetDeclarationAtStatement():this._parseDeclaration()},e.prototype._needsSemicolonAfter=function(e){switch(e.type){case Kr.Keyframe:case Kr.ViewPort:case Kr.Media:case Kr.Ruleset:case Kr.Namespace:case Kr.If:case Kr.For:case Kr.Each:case Kr.While:case Kr.MixinDeclaration:case Kr.FunctionDeclaration:case Kr.MixinContentDeclaration:return!1;case Kr.ExtendsReference:case Kr.MixinContentReference:case Kr.ReturnStatement:case Kr.MediaQuery:case Kr.Debug:case Kr.Import:case Kr.AtApplyRule:case Kr.CustomPropertyDeclaration:return!0;case Kr.VariableDeclaration:return e.needsSemicolon;case Kr.MixinReference:return!e.getContent();case Kr.Declaration:return!e.getNestedProperties()}return!1},e.prototype._parseDeclarations=function(e){var t=this.create(Qr);if(!this.accept(qn.CurlyL))return null;var n=e();while(t.addChild(n)){if(this.peek(qn.CurlyR))break;if(this._needsSemicolonAfter(n)&&!this.accept(qn.SemiColon))return this.finish(t,bo.SemiColonExpected,[qn.SemiColon,qn.CurlyR]);n&&this.prevToken&&this.prevToken.type===qn.SemiColon&&(n.semicolonPosition=this.prevToken.offset);while(this.accept(qn.SemiColon));n=e()}return this.accept(qn.CurlyR)?this.finish(t):this.finish(t,bo.RightCurlyExpected,[qn.CurlyR,qn.SemiColon])},e.prototype._parseBody=function(e,t){return e.setDeclarations(this._parseDeclarations(t))?this.finish(e):this.finish(e,bo.LeftCurlyExpected,[qn.CurlyR,qn.SemiColon])},e.prototype._parseSelector=function(e){var t=this.create(ni),n=!1;e&&(n=t.addChild(this._parseCombinator()));while(t.addChild(this._parseSimpleSelector()))n=!0,t.addChild(this._parseCombinator());return n?this.finish(t):null},e.prototype._parseDeclaration=function(e){var t=this._tryParseCustomPropertyDeclaration(e);if(t)return t;var n=this.create(si);return n.setProperty(this._parseProperty())?this.accept(qn.Colon)?(this.prevToken&&(n.colonPosition=this.prevToken.offset),n.setValue(this._parseExpr())?(n.addChild(this._parsePrio()),this.peek(qn.SemiColon)&&(n.semicolonPosition=this.token.offset),this.finish(n)):this.finish(n,bo.PropertyValueExpected)):this.finish(n,bo.ColonExpected,[qn.Colon],e||[qn.SemiColon]):null},e.prototype._tryParseCustomPropertyDeclaration=function(e){if(!this.peekRegExp(qn.Ident,/^--/))return null;var t=this.create(ai);if(!t.setProperty(this._parseProperty()))return null;if(!this.accept(qn.Colon))return this.finish(t,bo.ColonExpected,[qn.Colon]);this.prevToken&&(t.colonPosition=this.prevToken.offset);var n=this.mark();if(this.peek(qn.CurlyL)){var r=this.create(oi),i=this._parseDeclarations(this._parseRuleSetDeclaration.bind(this));if(r.setDeclarations(i)&&!i.isErroneous(!0)&&(r.addChild(this._parsePrio()),this.peek(qn.SemiColon)))return this.finish(r),t.setPropertySet(r),t.semicolonPosition=this.token.offset,this.finish(t);this.restoreAtMark(n)}var o=this._parseExpr();return o&&!o.isErroneous(!0)&&(this._parsePrio(),this.peekOne.apply(this,os(os([],e||[],!1),[qn.SemiColon,qn.EOF],!1)))?(t.setValue(o),this.peek(qn.SemiColon)&&(t.semicolonPosition=this.token.offset),this.finish(t)):(this.restoreAtMark(n),t.addChild(this._parseCustomPropertyValue(e)),t.addChild(this._parsePrio()),is(t.colonPosition)&&this.token.offset===t.colonPosition+1?this.finish(t,bo.PropertyValueExpected):this.finish(t))},e.prototype._parseCustomPropertyValue=function(e){var t=this;void 0===e&&(e=[qn.CurlyR]);var n=this.create(Jr),r=function(){return 0===o&&0===s&&0===a},i=function(){return-1!==e.indexOf(t.token.type)},o=0,s=0,a=0;e:while(1){switch(this.token.type){case qn.SemiColon:if(r())break e;break;case qn.Exclamation:if(r())break e;break;case qn.CurlyL:o++;break;case qn.CurlyR:if(o--,o<0){if(i()&&0===s&&0===a)break e;return this.finish(n,bo.LeftCurlyExpected)}break;case qn.ParenthesisL:s++;break;case qn.ParenthesisR:if(s--,s<0){if(i()&&0===a&&0===o)break e;return this.finish(n,bo.LeftParenthesisExpected)}break;case qn.BracketL:a++;break;case qn.BracketR:if(a--,a<0)return this.finish(n,bo.LeftSquareBracketExpected);break;case qn.BadString:break e;case qn.EOF:var l=bo.RightCurlyExpected;return a>0?l=bo.RightSquareBracketExpected:s>0&&(l=bo.RightParenthesisExpected),this.finish(n,l)}this.consumeToken()}return this.finish(n)},e.prototype._tryToParseDeclaration=function(e){var t=this.mark();return this._parseProperty()&&this.accept(qn.Colon)?(this.restoreAtMark(t),this._parseDeclaration(e)):(this.restoreAtMark(t),null)},e.prototype._parseProperty=function(){var e=this.create(li),t=this.mark();return(this.acceptDelim("*")||this.acceptDelim("_"))&&this.hasWhitespace()?(this.restoreAtMark(t),null):e.setIdentifier(this._parsePropertyIdentifier())?this.finish(e):null},e.prototype._parsePropertyIdentifier=function(){return this._parseIdent()},e.prototype._parseCharset=function(){if(!this.peek(qn.Charset))return null;var e=this.create(Jr);return this.consumeToken(),this.accept(qn.String)?this.accept(qn.SemiColon)?this.finish(e):this.finish(e,bo.SemiColonExpected):this.finish(e,bo.IdentifierExpected)},e.prototype._parseImport=function(){if(!this.peekKeyword("@import"))return null;var e=this.create(ki);return this.consumeToken(),e.addChild(this._parseURILiteral())||e.addChild(this._parseStringLiteral())?(this.peek(qn.SemiColon)||this.peek(qn.EOF)||e.setMedialist(this._parseMediaQueryList()),this.finish(e)):this.finish(e,bo.URIOrStringExpected)},e.prototype._parseNamespace=function(){if(!this.peekKeyword("@namespace"))return null;var e=this.create(Ti);return this.consumeToken(),e.addChild(this._parseURILiteral())||(e.addChild(this._parseIdent()),e.addChild(this._parseURILiteral())||e.addChild(this._parseStringLiteral()))?this.accept(qn.SemiColon)?this.finish(e):this.finish(e,bo.SemiColonExpected):this.finish(e,bo.URIExpected,[qn.SemiColon])},e.prototype._parseFontFace=function(){if(!this.peekKeyword("@font-face"))return null;var e=this.create(wi);return this.consumeToken(),this._parseBody(e,this._parseRuleSetDeclaration.bind(this))},e.prototype._parseViewPort=function(){if(!this.peekKeyword("@-ms-viewport")&&!this.peekKeyword("@-o-viewport")&&!this.peekKeyword("@viewport"))return null;var e=this.create(yi);return this.consumeToken(),this._parseBody(e,this._parseRuleSetDeclaration.bind(this))},e.prototype._parseKeyframe=function(){if(!this.peekRegExp(qn.AtKeyword,this.keyframeRegex))return null;var e=this.create(Si),t=this.create(Jr);return this.consumeToken(),e.setKeyword(this.finish(t)),t.matches("@-ms-keyframes")&&this.markError(t,bo.UnknownKeyword),e.setIdentifier(this._parseKeyframeIdent())?this._parseBody(e,this._parseKeyframeSelector.bind(this)):this.finish(e,bo.IdentifierExpected,[qn.CurlyR])},e.prototype._parseKeyframeIdent=function(){return this._parseIdent([jr.Keyframe])},e.prototype._parseKeyframeSelector=function(){var e=this.create(Ci);if(!e.addChild(this._parseIdent())&&!this.accept(qn.Percentage))return null;while(this.accept(qn.Comma))if(!e.addChild(this._parseIdent())&&!this.accept(qn.Percentage))return this.finish(e,bo.PercentageExpected);return this._parseBody(e,this._parseRuleSetDeclaration.bind(this))},e.prototype._tryParseKeyframeSelector=function(){var e=this.create(Ci),t=this.mark();if(!e.addChild(this._parseIdent())&&!this.accept(qn.Percentage))return null;while(this.accept(qn.Comma))if(!e.addChild(this._parseIdent())&&!this.accept(qn.Percentage))return this.restoreAtMark(t),null;return this.peek(qn.CurlyL)?this._parseBody(e,this._parseRuleSetDeclaration.bind(this)):(this.restoreAtMark(t),null)},e.prototype._parseSupports=function(e){if(void 0===e&&(e=!1),!this.peekKeyword("@supports"))return null;var t=this.create(Ri);return this.consumeToken(),t.addChild(this._parseSupportsCondition()),this._parseBody(t,this._parseSupportsDeclaration.bind(this,e))},e.prototype._parseSupportsDeclaration=function(e){return void 0===e&&(e=!1),e?this._tryParseRuleset(!0)||this._tryToParseDeclaration()||this._parseStylesheetStatement(!0):this._parseStylesheetStatement(!1)},e.prototype._parseSupportsCondition=function(){var e=this.create(Oi);if(this.acceptIdent("not"))e.addChild(this._parseSupportsConditionInParens());else if(e.addChild(this._parseSupportsConditionInParens()),this.peekRegExp(qn.Ident,/^(and|or)$/i)){var t=this.token.text.toLowerCase();while(this.acceptIdent(t))e.addChild(this._parseSupportsConditionInParens())}return this.finish(e)},e.prototype._parseSupportsConditionInParens=function(){var e=this.create(Oi);if(this.accept(qn.ParenthesisL))return this.prevToken&&(e.lParent=this.prevToken.offset),e.addChild(this._tryToParseDeclaration([qn.ParenthesisR]))||this._parseSupportsCondition()?this.accept(qn.ParenthesisR)?(this.prevToken&&(e.rParent=this.prevToken.offset),this.finish(e)):this.finish(e,bo.RightParenthesisExpected,[qn.ParenthesisR],[]):this.finish(e,bo.ConditionExpected);if(this.peek(qn.Ident)){var t=this.mark();if(this.consumeToken(),!this.hasWhitespace()&&this.accept(qn.ParenthesisL)){var n=1;while(this.token.type!==qn.EOF&&0!==n)this.token.type===qn.ParenthesisL?n++:this.token.type===qn.ParenthesisR&&n--,this.consumeToken();return this.finish(e)}this.restoreAtMark(t)}return this.finish(e,bo.LeftParenthesisExpected,[],[qn.ParenthesisL])},e.prototype._parseMediaDeclaration=function(e){return void 0===e&&(e=!1),e?this._tryParseRuleset(!0)||this._tryToParseDeclaration()||this._parseStylesheetStatement(!0):this._parseStylesheetStatement(!1)},e.prototype._parseMedia=function(e){if(void 0===e&&(e=!1),!this.peekKeyword("@media"))return null;var t=this.create(Ni);return this.consumeToken(),t.addChild(this._parseMediaQueryList())?this._parseBody(t,this._parseMediaDeclaration.bind(this,e)):this.finish(t,bo.MediaQueryExpected)},e.prototype._parseMediaQueryList=function(){var e=this.create(zi);if(!e.addChild(this._parseMediaQuery()))return this.finish(e,bo.MediaQueryExpected);while(this.accept(qn.Comma))if(!e.addChild(this._parseMediaQuery()))return this.finish(e,bo.MediaQueryExpected);return this.finish(e)},e.prototype._parseMediaQuery=function(){var e=this.create(Ii),t=this.mark();if(this.acceptIdent("not"),this.peek(qn.ParenthesisL))this.restoreAtMark(t),e.addChild(this._parseMediaCondition());else{if(this.acceptIdent("only"),!e.addChild(this._parseIdent()))return null;this.acceptIdent("and")&&e.addChild(this._parseMediaCondition())}return this.finish(e)},e.prototype._parseRatio=function(){var e=this.mark(),t=this.create(qi);return this._parseNumeric()?this.acceptDelim("/")?this._parseNumeric()?this.finish(t):this.finish(t,bo.NumberExpected):(this.restoreAtMark(e),null):null},e.prototype._parseMediaCondition=function(){var e=this.create(Mi);this.acceptIdent("not");var t=!0;while(t){if(!this.accept(qn.ParenthesisL))return this.finish(e,bo.LeftParenthesisExpected,[],[qn.CurlyL]);if(this.peek(qn.ParenthesisL)||this.peekIdent("not")?e.addChild(this._parseMediaCondition()):e.addChild(this._parseMediaFeature()),!this.accept(qn.ParenthesisR))return this.finish(e,bo.RightParenthesisExpected,[],[qn.CurlyL]);t=this.acceptIdent("and")||this.acceptIdent("or")}return this.finish(e)},e.prototype._parseMediaFeature=function(){var e=this,t=[qn.ParenthesisR],n=this.create(Pi),r=function(){return e.acceptDelim("<")||e.acceptDelim(">")?(e.hasWhitespace()||e.acceptDelim("="),!0):!!e.acceptDelim("=")};if(n.addChild(this._parseMediaFeatureName())){if(this.accept(qn.Colon)){if(!n.addChild(this._parseMediaFeatureValue()))return this.finish(n,bo.TermExpected,[],t)}else if(r()){if(!n.addChild(this._parseMediaFeatureValue()))return this.finish(n,bo.TermExpected,[],t);if(r()&&!n.addChild(this._parseMediaFeatureValue()))return this.finish(n,bo.TermExpected,[],t)}}else{if(!n.addChild(this._parseMediaFeatureValue()))return this.finish(n,bo.IdentifierExpected,[],t);if(!r())return this.finish(n,bo.OperatorExpected,[],t);if(!n.addChild(this._parseMediaFeatureName()))return this.finish(n,bo.IdentifierExpected,[],t);if(r()&&!n.addChild(this._parseMediaFeatureValue()))return this.finish(n,bo.TermExpected,[],t)}return this.finish(n)},e.prototype._parseMediaFeatureName=function(){return this._parseIdent()},e.prototype._parseMediaFeatureValue=function(){return this._parseRatio()||this._parseTermExpression()},e.prototype._parseMedium=function(){var e=this.create(Jr);return e.addChild(this._parseIdent())?this.finish(e):null},e.prototype._parsePageDeclaration=function(){return this._parsePageMarginBox()||this._parseRuleSetDeclaration()},e.prototype._parsePage=function(){if(!this.peekKeyword("@page"))return null;var e=this.create(Li);if(this.consumeToken(),e.addChild(this._parsePageSelector()))while(this.accept(qn.Comma))if(!e.addChild(this._parsePageSelector()))return this.finish(e,bo.IdentifierExpected);return this._parseBody(e,this._parsePageDeclaration.bind(this))},e.prototype._parsePageMarginBox=function(){if(!this.peek(qn.AtKeyword))return null;var e=this.create(Wi);return this.acceptOneKeyword(ns)||this.markError(e,bo.UnknownAtRule,[],[qn.CurlyL]),this._parseBody(e,this._parseRuleSetDeclaration.bind(this))},e.prototype._parsePageSelector=function(){if(!this.peek(qn.Ident)&&!this.peek(qn.Colon))return null;var e=this.create(Jr);return e.addChild(this._parseIdent()),this.accept(qn.Colon)&&!e.addChild(this._parseIdent())?this.finish(e,bo.IdentifierExpected):this.finish(e)},e.prototype._parseDocument=function(){if(!this.peekKeyword("@-moz-document"))return null;var e=this.create(Ai);return this.consumeToken(),this.resync([],[qn.CurlyL]),this._parseBody(e,this._parseStylesheetStatement.bind(this))},e.prototype._parseUnknownAtRule=function(){if(!this.peek(qn.AtKeyword))return null;var e=this.create(io);e.addChild(this._parseUnknownAtRuleName());var t=function(){return 0===r&&0===i&&0===o},n=0,r=0,i=0,o=0;e:while(1){switch(this.token.type){case qn.SemiColon:if(t())break e;break;case qn.EOF:return r>0?this.finish(e,bo.RightCurlyExpected):o>0?this.finish(e,bo.RightSquareBracketExpected):i>0?this.finish(e,bo.RightParenthesisExpected):this.finish(e);case qn.CurlyL:n++,r++;break;case qn.CurlyR:if(r--,n>0&&0===r){if(this.consumeToken(),o>0)return this.finish(e,bo.RightSquareBracketExpected);if(i>0)return this.finish(e,bo.RightParenthesisExpected);break e}if(r<0){if(0===i&&0===o)break e;return this.finish(e,bo.LeftCurlyExpected)}break;case qn.ParenthesisL:i++;break;case qn.ParenthesisR:if(i--,i<0)return this.finish(e,bo.LeftParenthesisExpected);break;case qn.BracketL:o++;break;case qn.BracketR:if(o--,o<0)return this.finish(e,bo.LeftSquareBracketExpected);break}this.consumeToken()}return e},e.prototype._parseUnknownAtRuleName=function(){var e=this.create(Jr);return this.accept(qn.AtKeyword)?this.finish(e):e},e.prototype._parseOperator=function(){if(this.peekDelim("/")||this.peekDelim("*")||this.peekDelim("+")||this.peekDelim("-")||this.peek(qn.Dashmatch)||this.peek(qn.Includes)||this.peek(qn.SubstringOperator)||this.peek(qn.PrefixOperator)||this.peek(qn.SuffixOperator)||this.peekDelim("=")){var e=this.createNode(Kr.Operator);return this.consumeToken(),this.finish(e)}return null},e.prototype._parseUnaryOperator=function(){if(!this.peekDelim("+")&&!this.peekDelim("-"))return null;var e=this.create(Jr);return this.consumeToken(),this.finish(e)},e.prototype._parseCombinator=function(){if(this.peekDelim(">")){var e=this.create(Jr);this.consumeToken();var t=this.mark();if(!this.hasWhitespace()&&this.acceptDelim(">")){if(!this.hasWhitespace()&&this.acceptDelim(">"))return e.type=Kr.SelectorCombinatorShadowPiercingDescendant,this.finish(e);this.restoreAtMark(t)}return e.type=Kr.SelectorCombinatorParent,this.finish(e)}if(this.peekDelim("+")){e=this.create(Jr);return this.consumeToken(),e.type=Kr.SelectorCombinatorSibling,this.finish(e)}if(this.peekDelim("~")){e=this.create(Jr);return this.consumeToken(),e.type=Kr.SelectorCombinatorAllSiblings,this.finish(e)}if(this.peekDelim("/")){e=this.create(Jr);this.consumeToken();t=this.mark();if(!this.hasWhitespace()&&this.acceptIdent("deep")&&!this.hasWhitespace()&&this.acceptDelim("/"))return e.type=Kr.SelectorCombinatorShadowPiercingDescendant,this.finish(e);this.restoreAtMark(t)}return null},e.prototype._parseSimpleSelector=function(){var e=this.create(ri),t=0;e.addChild(this._parseElementName())&&t++;while((0===t||!this.hasWhitespace())&&e.addChild(this._parseSimpleSelectorBody()))t++;return t>0?this.finish(e):null},e.prototype._parseSimpleSelectorBody=function(){return this._parsePseudo()||this._parseHash()||this._parseClass()||this._parseAttrib()},e.prototype._parseSelectorIdent=function(){return this._parseIdent()},e.prototype._parseHash=function(){if(!this.peek(qn.Hash)&&!this.peekDelim("#"))return null;var e=this.createNode(Kr.IdentifierSelector);if(this.acceptDelim("#")){if(this.hasWhitespace()||!e.addChild(this._parseSelectorIdent()))return this.finish(e,bo.IdentifierExpected)}else this.consumeToken();return this.finish(e)},e.prototype._parseClass=function(){if(!this.peekDelim("."))return null;var e=this.createNode(Kr.ClassSelector);return this.consumeToken(),this.hasWhitespace()||!e.addChild(this._parseSelectorIdent())?this.finish(e,bo.IdentifierExpected):this.finish(e)},e.prototype._parseElementName=function(){var e=this.mark(),t=this.createNode(Kr.ElementNameSelector);return t.addChild(this._parseNamespacePrefix()),t.addChild(this._parseSelectorIdent())||this.acceptDelim("*")?this.finish(t):(this.restoreAtMark(e),null)},e.prototype._parseNamespacePrefix=function(){var e=this.mark(),t=this.createNode(Kr.NamespacePrefix);return!t.addChild(this._parseIdent())&&this.acceptDelim("*"),this.acceptDelim("|")?this.finish(t):(this.restoreAtMark(e),null)},e.prototype._parseAttrib=function(){if(!this.peek(qn.BracketL))return null;var e=this.create(ji);return this.consumeToken(),e.setNamespacePrefix(this._parseNamespacePrefix()),e.setIdentifier(this._parseIdent())?(e.setOperator(this._parseOperator())&&(e.setValue(this._parseBinaryExpr()),this.acceptIdent("i")),this.accept(qn.BracketR)?this.finish(e):this.finish(e,bo.RightSquareBracketExpected)):this.finish(e,bo.IdentifierExpected)},e.prototype._parsePseudo=function(){var e=this,t=this._tryParsePseudoIdentifier();if(t){if(!this.hasWhitespace()&&this.accept(qn.ParenthesisL)){var n=function(){var t=e.create(Jr);if(!t.addChild(e._parseSelector(!1)))return null;while(e.accept(qn.Comma)&&t.addChild(e._parseSelector(!1)));return e.peek(qn.ParenthesisR)?e.finish(t):null};if(t.addChild(this.try(n)||this._parseBinaryExpr()),!this.accept(qn.ParenthesisR))return this.finish(t,bo.RightParenthesisExpected)}return this.finish(t)}return null},e.prototype._tryParsePseudoIdentifier=function(){if(!this.peek(qn.Colon))return null;var e=this.mark(),t=this.createNode(Kr.PseudoSelector);return this.consumeToken(),this.hasWhitespace()?(this.restoreAtMark(e),null):(this.accept(qn.Colon),this.hasWhitespace()||!t.addChild(this._parseIdent())?this.finish(t,bo.IdentifierExpected):this.finish(t))},e.prototype._tryParsePrio=function(){var e=this.mark(),t=this._parsePrio();return t||(this.restoreAtMark(e),null)},e.prototype._parsePrio=function(){if(!this.peek(qn.Exclamation))return null;var e=this.createNode(Kr.Prio);return this.accept(qn.Exclamation)&&this.acceptIdent("important")?this.finish(e):null},e.prototype._parseExpr=function(e){void 0===e&&(e=!1);var t=this.create(Vi);if(!t.addChild(this._parseBinaryExpr()))return null;while(1){if(this.peek(qn.Comma)){if(e)return this.finish(t);this.consumeToken()}if(!t.addChild(this._parseBinaryExpr()))break}return this.finish(t)},e.prototype._parseNamedLine=function(){if(!this.peek(qn.BracketL))return null;var e=this.createNode(Kr.GridLine);this.consumeToken();while(e.addChild(this._parseIdent()));return this.accept(qn.BracketR)?this.finish(e):this.finish(e,bo.RightSquareBracketExpected)},e.prototype._parseBinaryExpr=function(e,t){var n=this.create(Ui);if(!n.setLeft(e||this._parseTerm()))return null;if(!n.setOperator(t||this._parseOperator()))return this.finish(n);if(!n.setRight(this._parseTerm()))return this.finish(n,bo.TermExpected);n=this.finish(n);var r=this._parseOperator();return r&&(n=this._parseBinaryExpr(n,r)),this.finish(n)},e.prototype._parseTerm=function(){var e=this.create(Ki);return e.setOperator(this._parseUnaryOperator()),e.setExpression(this._parseTermExpression())?this.finish(e):null},e.prototype._parseTermExpression=function(){return this._parseURILiteral()||this._parseFunction()||this._parseIdent()||this._parseStringLiteral()||this._parseNumeric()||this._parseHexColor()||this._parseOperation()||this._parseNamedLine()},e.prototype._parseOperation=function(){if(!this.peek(qn.ParenthesisL))return null;var e=this.create(Jr);return this.consumeToken(),e.addChild(this._parseExpr()),this.accept(qn.ParenthesisR)?this.finish(e):this.finish(e,bo.RightParenthesisExpected)},e.prototype._parseNumeric=function(){if(this.peek(qn.Num)||this.peek(qn.Percentage)||this.peek(qn.Resolution)||this.peek(qn.Length)||this.peek(qn.EMS)||this.peek(qn.EXS)||this.peek(qn.Angle)||this.peek(qn.Time)||this.peek(qn.Dimension)||this.peek(qn.Freq)){var e=this.create(Ji);return this.consumeToken(),this.finish(e)}return null},e.prototype._parseStringLiteral=function(){if(!this.peek(qn.String)&&!this.peek(qn.BadString))return null;var e=this.createNode(Kr.StringLiteral);return this.consumeToken(),this.finish(e)},e.prototype._parseURILiteral=function(){if(!this.peekRegExp(qn.Ident,/^url(-prefix)?$/i))return null;var e=this.mark(),t=this.createNode(Kr.URILiteral);return this.accept(qn.Ident),this.hasWhitespace()||!this.peek(qn.ParenthesisL)?(this.restoreAtMark(e),null):(this.scanner.inURL=!0,this.consumeToken(),t.addChild(this._parseURLArgument()),this.scanner.inURL=!1,this.accept(qn.ParenthesisR)?this.finish(t):this.finish(t,bo.RightParenthesisExpected))},e.prototype._parseURLArgument=function(){var e=this.create(Jr);return this.accept(qn.String)||this.accept(qn.BadString)||this.acceptUnquotedString()?this.finish(e):null},e.prototype._parseIdent=function(e){if(!this.peek(qn.Ident))return null;var t=this.create(Yr);return e&&(t.referenceTypes=e),t.isCustomProperty=this.peekRegExp(qn.Ident,/^--/),this.consumeToken(),this.finish(t)},e.prototype._parseFunction=function(){var e=this.mark(),t=this.create(di);if(!t.setIdentifier(this._parseFunctionIdentifier()))return null;if(this.hasWhitespace()||!this.accept(qn.ParenthesisL))return this.restoreAtMark(e),null;if(t.getArguments().addChild(this._parseFunctionArgument()))while(this.accept(qn.Comma)){if(this.peek(qn.ParenthesisR))break;t.getArguments().addChild(this._parseFunctionArgument())||this.markError(t,bo.ExpressionExpected)}return this.accept(qn.ParenthesisR)?this.finish(t):this.finish(t,bo.RightParenthesisExpected)},e.prototype._parseFunctionIdentifier=function(){if(!this.peek(qn.Ident))return null;var e=this.create(Yr);if(e.referenceTypes=[jr.Function],this.acceptIdent("progid")){if(this.accept(qn.Colon))while(this.accept(qn.Ident)&&this.acceptDelim("."));return this.finish(e)}return this.consumeToken(),this.finish(e)},e.prototype._parseFunctionArgument=function(){var e=this.create(pi);return e.setValue(this._parseExpr(!0))?this.finish(e):null},e.prototype._parseHexColor=function(){if(this.peekRegExp(qn.Hash,/^#([A-Fa-f0-9]{3}|[A-Fa-f0-9]{4}|[A-Fa-f0-9]{6}|[A-Fa-f0-9]{8})$/g)){var e=this.create(Bi);return this.consumeToken(),this.finish(e)}return null},e}();function as(e,t){var n=0,r=e.length;if(0===r)return 0;while(ne+t||this.offset===e&&this.length===t?this.findInScope(e,t):null},e.prototype.findInScope=function(e,t){void 0===t&&(t=0);var n=e+t,r=as(this.children,(function(e){return e.offset>n}));if(0===r)return this;var i=this.children[r-1];return i.offset<=e&&i.offset+i.length>=e+t?i.findInScope(e,t):this},e.prototype.addSymbol=function(e){this.symbols.push(e)},e.prototype.getSymbol=function(e,t){for(var n=0;n0&&(i.arguments=n),i}function n(e){var t=e;return xa.defined(t)&&xa.string(t.title)&&xa.string(t.command)}e.create=t,e.is=n}(Es||(Es={})),function(e){function t(e,t){return{range:e,newText:t}}function n(e,t){return{range:{start:e,end:e},newText:t}}function r(e){return{range:e,newText:""}}function i(e){var t=e;return xa.objectLiteral(t)&&xa.string(t.newText)&&us.is(t.range)}e.replace=t,e.insert=n,e.del=r,e.is=i}(Fs||(Fs={})),function(e){function t(e,t,n){var r={label:e};return void 0!==t&&(r.needsConfirmation=t),void 0!==n&&(r.description=n),r}function n(e){var t=e;return void 0!==t&&xa.objectLiteral(t)&&xa.string(t.label)&&(xa.boolean(t.needsConfirmation)||void 0===t.needsConfirmation)&&(xa.string(t.description)||void 0===t.description)}e.create=t,e.is=n}(Ds||(Ds={})),function(e){function t(e){var t=e;return"string"===typeof t}e.is=t}(Ts||(Ts={})),function(e){function t(e,t,n){return{range:e,newText:t,annotationId:n}}function n(e,t,n){return{range:{start:e,end:e},newText:t,annotationId:n}}function r(e,t){return{range:e,newText:"",annotationId:t}}function i(e){var t=e;return Fs.is(t)&&(Ds.is(t.annotationId)||Ts.is(t.annotationId))}e.replace=t,e.insert=n,e.del=r,e.is=i}(Ns||(Ns={})),function(e){function t(e,t){return{textDocument:e,edits:t}}function n(e){var t=e;return xa.defined(t)&&Bs.is(t.textDocument)&&Array.isArray(t.edits)}e.create=t,e.is=n}(Rs||(Rs={})),function(e){function t(e,t,n){var r={kind:"create",uri:e};return void 0===t||void 0===t.overwrite&&void 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r=n;if(!is(r.colonPosition)||this.offset<=r.colonPosition)return this.getCompletionsForDeclarationProperty(r,t);if(is(r.semicolonPosition)&&r.semicolonPositione.colonPosition&&this.getVariableProposals(e.getValue(),t),t},e.prototype.getCompletionsForExpression=function(e,t){var n=e.getParent();if(n instanceof pi)return this.getCompletionsForFunctionArgument(n,n.getParent(),t),t;var r=e.findParent(Kr.Declaration);if(!r)return this.getTermProposals(void 0,null,t),t;var i=e.findChildAtOffset(this.offset,!0);return i?i instanceof Ji||i instanceof Yr?this.getCompletionsForDeclarationValue(r,t):t:this.getCompletionsForDeclarationValue(r,t)},e.prototype.getCompletionsForFunctionArgument=function(e,t,n){var r=t.getIdentifier();return r&&r.matches("var")&&(t.getArguments().hasChildren()&&t.getArguments().getChild(0)!==e||this.getVariableProposalsForCSSVarFunction(n)),n},e.prototype.getCompletionsForFunctionDeclaration=function(e,t){var n=e.getDeclarations();return n&&this.offset>n.offset&&this.offsete.lParent&&(!is(e.rParent)||this.offset<=e.rParent)?this.getCompletionsForDeclarationProperty(null,t):t},e.prototype.getCompletionsForSupports=function(e,t){var n=e.getDeclarations(),r=!n||this.offset<=n.offset;if(r){var i=e.findFirstChildBeforeOffset(this.offset);return i instanceof Oi?this.getCompletionsForSupportsCondition(i,t):t}return this.getCompletionForTopLevel(t)},e.prototype.getCompletionsForExtendsReference=function(e,t,n){return n},e.prototype.getCompletionForUriLiteralValue=function(e,t){var n,r,i;if(e.hasChildren()){var o=e.getChild(0);n=o.getText(),r=this.position,i=this.getCompletionRange(o)}else{n="",r=this.position;var s=this.textDocument.positionAt(e.offset+"url(".length);i=us.create(s,s)}return this.completionParticipants.forEach((function(e){e.onCssURILiteralValue&&e.onCssURILiteralValue({uriValue:n,position:r,range:i})})),t},e.prototype.getCompletionForImportPath=function(e,t){var n=this;return this.completionParticipants.forEach((function(t){t.onCssImportPath&&t.onCssImportPath({pathValue:e.getText(),position:n.position,range:n.getCompletionRange(e)})})),t},e.prototype.hasCharacterAtPosition=function(e,t){var n=this.textDocument.getText();return e>=0&&e=0&&-1===' \t\n\r":{[()]},*>+'.indexOf(r.charAt(n)))n--;return r.substring(n+1,t)}function sl(e){return e.toLowerCase()in Fo||/(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(e)}var al,ll=function(){var e=function(t,n){return e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])},e(t,n)};return function(t,n){if("function"!==typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),cl=mo(),dl=function(){function e(){this.parent=null,this.children=null,this.attributes=null}return e.prototype.findAttribute=function(e){if(this.attributes)for(var t=0,n=this.attributes;t"),this.writeLine(t,r.join(""))}},e}();(function(e){function t(e,t){return t+n(e)+t}function n(e){var t=e.match(/^['"](.*)["']$/);return t?t[1]:e}e.ensure=t,e.remove=n})(al||(al={}));var ml=function(){function e(){this.id=0,this.attr=0,this.tag=0}return e}();function fl(e,t){for(var n=new dl,r=0,i=e.getChildren();r1){var c=t.cloneWithParent();n.addChild(c.findRoot()),n=c}n.append(s[l])}}break;case Kr.SelectorPlaceholder:if(o.matches("@at-root"))return n;case Kr.ElementNameSelector:var d=o.getText();n.addAttr("name","*"===d?"element":gl(d));break;case Kr.ClassSelector:n.addAttr("class",gl(o.getText().substring(1)));break;case Kr.IdentifierSelector:n.addAttr("id",gl(o.getText().substring(1)));break;case Kr.MixinDeclaration:n.addAttr("class",o.getName());break;case Kr.PseudoSelector:n.addAttr(gl(o.getText()),"");break;case Kr.AttributeSelector:var h=o,p=h.getIdentifier();if(p){var u=h.getValue(),m=h.getOperator(),f=void 0;if(u&&m)switch(gl(m.getText())){case"|=":f=al.remove(gl(u.getText()))+"-…";break;case"^=":f=al.remove(gl(u.getText()))+"…";break;case"$=":f="…"+al.remove(gl(u.getText()));break;case"~=":f=" … "+al.remove(gl(u.getText()))+" … ";break;case"*=":f="…"+al.remove(gl(u.getText()))+"…";break;default:f=al.remove(gl(u.getText()));break}n.addAttr(gl(p.getText()),f)}break}}return n}function gl(e){var t=new Pr;t.setSource(e);var n=t.scanUnquotedString();return n?n.text:e}var bl=function(){function e(e){this.cssDataManager=e}return e.prototype.selectorToMarkedString=function(e){var t=wl(e);if(t){var n=new ul('"').print(t);return n.push(this.selectorToSpecificityMarkedString(e)),n}return[]},e.prototype.simpleSelectorToMarkedString=function(e){var t=fl(e),n=new ul('"').print(t);return n.push(this.selectorToSpecificityMarkedString(e)),n},e.prototype.isPseudoElementIdentifier=function(e){var t=e.match(/^::?([\w-]+)/);return!!t&&!!this.cssDataManager.getPseudoElement("::"+t[1])},e.prototype.selectorToSpecificityMarkedString=function(e){var t=this,n=function(e){for(var i=0,o=e.getChildren();i0&&n(s)}},r=new ml;return n(e),cl("specificity","[Selector Specificity](https://developer.mozilla.org/en-US/docs/Web/CSS/Specificity): ({0}, {1}, {2})",r.id,r.attr,r.tag)},e}(),vl=function(){function e(e){this.prev=null,this.element=e}return e.prototype.processSelector=function(e){var t=null;if(!(this.element instanceof hl)&&e.getChildren().some((function(e){return e.hasChildren()&&e.getChild(0).type===Kr.SelectorCombinator}))){var n=this.element.findRoot();n.parent instanceof hl&&(t=this.element,this.element=n.parent,this.element.removeChild(n),this.prev=null)}for(var r=0,i=e.getChildren();r=0;s--){var a=n[s].getSelectors().getChild(0);a&&o.processSelector(a)}return o.processSelector(e),t}var xl=function(){function e(e,t){this.clientCapabilities=e,this.cssDataManager=t,this.selectorPrinting=new bl(t)}return e.prototype.configure=function(e){this.defaultSettings=e},e.prototype.doHover=function(e,t,n,r){function i(t){return us.create(e.positionAt(t.offset),e.positionAt(t.end))}void 0===r&&(r=this.defaultSettings);for(var o=e.offsetAt(t),s=$r(n,o),a=null,l=0;l0&&i[i.length-1])&&(6===o[0]||2===o[0])){s=0;continue}if(3===o[0]&&(!i||o[1]>i[0]&&o[1]=i.length/2&&o.push({property:e.name,score:t})})),o.sort((function(e,t){return t.score-e.score||e.property.localeCompare(t.property)}));for(var s=3,a=0,l=o;a=0;a--){var l=s[a];if(l instanceof si){var c=l.getProperty();if(c&&c.offset===i&&c.end===o)return void this.getFixesForUnknownProperty(e,c,n,r)}}},e}(),ql=function(){function e(e){this.fullPropertyName=e.getFullPropertyName().toLowerCase(),this.node=e}return e}();function $l(e,t,n,r){var i=e[t];i.value=n,n&&(ls(i.properties,r)||i.properties.push(r))}function Hl(e,t,n){$l(e,"top",t,n),$l(e,"right",t,n),$l(e,"bottom",t,n),$l(e,"left",t,n)}function Gl(e,t,n,r){"top"===t||"right"===t||"bottom"===t||"left"===t?$l(e,t,n,r):Hl(e,n,r)}function Jl(e,t,n){switch(t.length){case 1:Gl(e,void 0,t[0],n);break;case 2:Gl(e,"top",t[0],n),Gl(e,"bottom",t[0],n),Gl(e,"right",t[1],n),Gl(e,"left",t[1],n);break;case 3:Gl(e,"top",t[0],n),Gl(e,"right",t[1],n),Gl(e,"left",t[1],n),Gl(e,"bottom",t[2],n);break;case 4:Gl(e,"top",t[0],n),Gl(e,"right",t[1],n),Gl(e,"bottom",t[2],n),Gl(e,"left",t[3],n);break}}function Xl(e,t){for(var n=0,r=t;n0)for(var f=this.fetch(r,"float"),g=0;g0)for(f=this.fetch(r,"vertical-align"),g=0;g1)for(var S=0;S")||this.peekDelim("<")||this.peekIdent("and")||this.peekIdent("or")||this.peekDelim("%")){var t=this.createNode(Kr.Operator);return this.consumeToken(),this.finish(t)}return e.prototype._parseOperator.call(this)},t.prototype._parseUnaryOperator=function(){if(this.peekIdent("not")){var t=this.create(Jr);return this.consumeToken(),this.finish(t)}return e.prototype._parseUnaryOperator.call(this)},t.prototype._parseRuleSetDeclaration=function(){return this.peek(qn.AtKeyword)?this._parseKeyframe()||this._parseImport()||this._parseMedia(!0)||this._parseFontFace()||this._parseWarnAndDebug()||this._parseControlStatement()||this._parseFunctionDeclaration()||this._parseExtends()||this._parseMixinReference()||this._parseMixinContent()||this._parseMixinDeclaration()||this._parseRuleset(!0)||this._parseSupports(!0)||e.prototype._parseRuleSetDeclarationAtStatement.call(this):this._parseVariableDeclaration()||this._tryParseRuleset(!0)||e.prototype._parseRuleSetDeclaration.call(this)},t.prototype._parseDeclaration=function(e){var t=this._tryParseCustomPropertyDeclaration(e);if(t)return t;var n=this.create(si);if(!n.setProperty(this._parseProperty()))return null;if(!this.accept(qn.Colon))return this.finish(n,bo.ColonExpected,[qn.Colon],e||[qn.SemiColon]);this.prevToken&&(n.colonPosition=this.prevToken.offset);var r=!1;if(n.setValue(this._parseExpr())&&(r=!0,n.addChild(this._parsePrio())),this.peek(qn.CurlyL))n.setNestedProperties(this._parseNestedProperties());else if(!r)return this.finish(n,bo.PropertyValueExpected);return this.peek(qn.SemiColon)&&(n.semicolonPosition=this.token.offset),this.finish(n)},t.prototype._parseNestedProperties=function(){var e=this.create(xi);return this._parseBody(e,this._parseDeclaration.bind(this))},t.prototype._parseExtends=function(){if(this.peekKeyword("@extend")){var e=this.create(Qi);if(this.consumeToken(),!e.getSelectors().addChild(this._parseSimpleSelector()))return this.finish(e,bo.SelectorExpected);while(this.accept(qn.Comma))e.getSelectors().addChild(this._parseSimpleSelector());return this.accept(qn.Exclamation)&&!this.acceptIdent("optional")?this.finish(e,bo.UnknownKeyword):this.finish(e)}return null},t.prototype._parseSimpleSelectorBody=function(){return this._parseSelectorCombinator()||this._parseSelectorPlaceholder()||e.prototype._parseSimpleSelectorBody.call(this)},t.prototype._parseSelectorCombinator=function(){if(this.peekDelim("&")){var e=this.createNode(Kr.SelectorCombinator);this.consumeToken();while(!this.hasWhitespace()&&(this.acceptDelim("-")||this.accept(qn.Num)||this.accept(qn.Dimension)||e.addChild(this._parseIdent())||this.acceptDelim("&")));return this.finish(e)}return null},t.prototype._parseSelectorPlaceholder=function(){if(this.peekDelim("%")){var e=this.createNode(Kr.SelectorPlaceholder);return this.consumeToken(),this._parseIdent(),this.finish(e)}if(this.peekKeyword("@at-root")){e=this.createNode(Kr.SelectorPlaceholder);return this.consumeToken(),this.finish(e)}return null},t.prototype._parseElementName=function(){var t=this.mark(),n=e.prototype._parseElementName.call(this);return n&&!this.hasWhitespace()&&this.peek(qn.ParenthesisL)?(this.restoreAtMark(t),null):n},t.prototype._tryParsePseudoIdentifier=function(){return this._parseInterpolation()||e.prototype._tryParsePseudoIdentifier.call(this)},t.prototype._parseWarnAndDebug=function(){if(!this.peekKeyword("@debug")&&!this.peekKeyword("@warn")&&!this.peekKeyword("@error"))return null;var e=this.createNode(Kr.Debug);return this.consumeToken(),e.addChild(this._parseExpr()),this.finish(e)},t.prototype._parseControlStatement=function(e){return void 0===e&&(e=this._parseRuleSetDeclaration.bind(this)),this.peek(qn.AtKeyword)?this._parseIfStatement(e)||this._parseForStatement(e)||this._parseEachStatement(e)||this._parseWhileStatement(e):null},t.prototype._parseIfStatement=function(e){return this.peekKeyword("@if")?this._internalParseIfStatement(e):null},t.prototype._internalParseIfStatement=function(e){var t=this.create(ui);if(this.consumeToken(),!t.setExpression(this._parseExpr(!0)))return this.finish(t,bo.ExpressionExpected);if(this._parseBody(t,e),this.acceptKeyword("@else"))if(this.peekIdent("if"))t.setElseClause(this._internalParseIfStatement(e));else if(this.peek(qn.CurlyL)){var n=this.create(bi);this._parseBody(n,e),t.setElseClause(n)}return this.finish(t)},t.prototype._parseForStatement=function(e){if(!this.peekKeyword("@for"))return null;var t=this.create(mi);return this.consumeToken(),t.setVariable(this._parseVariable())?this.acceptIdent("from")?t.addChild(this._parseBinaryExpr())?this.acceptIdent("to")||this.acceptIdent("through")?t.addChild(this._parseBinaryExpr())?this._parseBody(t,e):this.finish(t,bo.ExpressionExpected,[qn.CurlyR]):this.finish(t,Rc.ThroughOrToExpected,[qn.CurlyR]):this.finish(t,bo.ExpressionExpected,[qn.CurlyR]):this.finish(t,Rc.FromExpected,[qn.CurlyR]):this.finish(t,bo.VariableNameExpected,[qn.CurlyR])},t.prototype._parseEachStatement=function(e){if(!this.peekKeyword("@each"))return null;var t=this.create(fi);this.consumeToken();var n=t.getVariables();if(!n.addChild(this._parseVariable()))return this.finish(t,bo.VariableNameExpected,[qn.CurlyR]);while(this.accept(qn.Comma))if(!n.addChild(this._parseVariable()))return this.finish(t,bo.VariableNameExpected,[qn.CurlyR]);return this.finish(n),this.acceptIdent("in")?t.addChild(this._parseExpr())?this._parseBody(t,e):this.finish(t,bo.ExpressionExpected,[qn.CurlyR]):this.finish(t,Rc.InExpected,[qn.CurlyR])},t.prototype._parseWhileStatement=function(e){if(!this.peekKeyword("@while"))return null;var t=this.create(gi);return this.consumeToken(),t.addChild(this._parseBinaryExpr())?this._parseBody(t,e):this.finish(t,bo.ExpressionExpected,[qn.CurlyR])},t.prototype._parseFunctionBodyDeclaration=function(){return this._parseVariableDeclaration()||this._parseReturnStatement()||this._parseWarnAndDebug()||this._parseControlStatement(this._parseFunctionBodyDeclaration.bind(this))},t.prototype._parseFunctionDeclaration=function(){if(!this.peekKeyword("@function"))return null;var e=this.create(vi);if(this.consumeToken(),!e.setIdentifier(this._parseIdent([jr.Function])))return this.finish(e,bo.IdentifierExpected,[qn.CurlyR]);if(!this.accept(qn.ParenthesisL))return this.finish(e,bo.LeftParenthesisExpected,[qn.CurlyR]);if(e.getParameters().addChild(this._parseParameterDeclaration()))while(this.accept(qn.Comma)){if(this.peek(qn.ParenthesisR))break;if(!e.getParameters().addChild(this._parseParameterDeclaration()))return this.finish(e,bo.VariableNameExpected)}return this.accept(qn.ParenthesisR)?this._parseBody(e,this._parseFunctionBodyDeclaration.bind(this)):this.finish(e,bo.RightParenthesisExpected,[qn.CurlyR])},t.prototype._parseReturnStatement=function(){if(!this.peekKeyword("@return"))return null;var e=this.createNode(Kr.ReturnStatement);return this.consumeToken(),e.addChild(this._parseExpr())?this.finish(e):this.finish(e,bo.ExpressionExpected)},t.prototype._parseMixinDeclaration=function(){if(!this.peekKeyword("@mixin"))return null;var e=this.create(ro);if(this.consumeToken(),!e.setIdentifier(this._parseIdent([jr.Mixin])))return this.finish(e,bo.IdentifierExpected,[qn.CurlyR]);if(this.accept(qn.ParenthesisL)){if(e.getParameters().addChild(this._parseParameterDeclaration()))while(this.accept(qn.Comma)){if(this.peek(qn.ParenthesisR))break;if(!e.getParameters().addChild(this._parseParameterDeclaration()))return this.finish(e,bo.VariableNameExpected)}if(!this.accept(qn.ParenthesisR))return this.finish(e,bo.RightParenthesisExpected,[qn.CurlyR])}return this._parseBody(e,this._parseRuleSetDeclaration.bind(this))},t.prototype._parseParameterDeclaration=function(){var e=this.create(hi);return e.setIdentifier(this._parseVariable())?(this.accept(Fc),this.accept(qn.Colon)&&!e.setDefaultValue(this._parseExpr(!0))?this.finish(e,bo.VariableValueExpected,[],[qn.Comma,qn.ParenthesisR]):this.finish(e)):null},t.prototype._parseMixinContent=function(){if(!this.peekKeyword("@content"))return null;var e=this.create(eo);if(this.consumeToken(),this.accept(qn.ParenthesisL)){if(e.getArguments().addChild(this._parseFunctionArgument()))while(this.accept(qn.Comma)){if(this.peek(qn.ParenthesisR))break;if(!e.getArguments().addChild(this._parseFunctionArgument()))return this.finish(e,bo.ExpressionExpected)}if(!this.accept(qn.ParenthesisR))return this.finish(e,bo.RightParenthesisExpected)}return this.finish(e)},t.prototype._parseMixinReference=function(){if(!this.peekKeyword("@include"))return null;var e=this.create(no);this.consumeToken();var t=this._parseIdent([jr.Mixin]);if(!e.setIdentifier(t))return this.finish(e,bo.IdentifierExpected,[qn.CurlyR]);if(!this.hasWhitespace()&&this.acceptDelim(".")&&!this.hasWhitespace()){var n=this._parseIdent([jr.Mixin]);if(!n)return this.finish(e,bo.IdentifierExpected,[qn.CurlyR]);var r=this.create(lo);t.referenceTypes=[jr.Module],r.setIdentifier(t),e.setIdentifier(n),e.addChild(r)}if(this.accept(qn.ParenthesisL)){if(e.getArguments().addChild(this._parseFunctionArgument()))while(this.accept(qn.Comma)){if(this.peek(qn.ParenthesisR))break;if(!e.getArguments().addChild(this._parseFunctionArgument()))return this.finish(e,bo.ExpressionExpected)}if(!this.accept(qn.ParenthesisR))return this.finish(e,bo.RightParenthesisExpected)}return(this.peekIdent("using")||this.peek(qn.CurlyL))&&e.setContent(this._parseMixinContentDeclaration()),this.finish(e)},t.prototype._parseMixinContentDeclaration=function(){var e=this.create(to);if(this.acceptIdent("using")){if(!this.accept(qn.ParenthesisL))return this.finish(e,bo.LeftParenthesisExpected,[qn.CurlyL]);if(e.getParameters().addChild(this._parseParameterDeclaration()))while(this.accept(qn.Comma)){if(this.peek(qn.ParenthesisR))break;if(!e.getParameters().addChild(this._parseParameterDeclaration()))return this.finish(e,bo.VariableNameExpected)}if(!this.accept(qn.ParenthesisR))return this.finish(e,bo.RightParenthesisExpected,[qn.CurlyL])}return this.peek(qn.CurlyL)&&this._parseBody(e,this._parseMixinReferenceBodyStatement.bind(this)),this.finish(e)},t.prototype._parseMixinReferenceBodyStatement=function(){return this._tryParseKeyframeSelector()||this._parseRuleSetDeclaration()},t.prototype._parseFunctionArgument=function(){var e=this.create(pi),t=this.mark(),n=this._parseVariable();if(n)if(this.accept(qn.Colon))e.setIdentifier(n);else{if(this.accept(Fc))return e.setValue(n),this.finish(e);this.restoreAtMark(t)}return e.setValue(this._parseExpr(!0))?(this.accept(Fc),e.addChild(this._parsePrio()),this.finish(e)):e.setValue(this._tryParsePrio())?this.finish(e):null},t.prototype._parseURLArgument=function(){var t=this.mark(),n=e.prototype._parseURLArgument.call(this);if(!n||!this.peek(qn.ParenthesisR)){this.restoreAtMark(t);var r=this.create(Jr);return r.addChild(this._parseBinaryExpr()),this.finish(r)}return n},t.prototype._parseOperation=function(){if(!this.peek(qn.ParenthesisL))return null;var e=this.create(Jr);this.consumeToken();while(e.addChild(this._parseListElement()))this.accept(qn.Comma);return this.accept(qn.ParenthesisR)?this.finish(e):this.finish(e,bo.RightParenthesisExpected)},t.prototype._parseListElement=function(){var e=this.create(oo),t=this._parseBinaryExpr();if(!t)return null;if(this.accept(qn.Colon)){if(e.setKey(t),!e.setValue(this._parseBinaryExpr()))return this.finish(e,bo.ExpressionExpected)}else e.setValue(t);return this.finish(e)},t.prototype._parseUse=function(){if(!this.peekKeyword("@use"))return null;var e=this.create(_i);if(this.consumeToken(),!e.addChild(this._parseStringLiteral()))return this.finish(e,bo.StringLiteralExpected);if(!this.peek(qn.SemiColon)&&!this.peek(qn.EOF)){if(!this.peekRegExp(qn.Ident,/as|with/))return this.finish(e,bo.UnknownKeyword);if(this.acceptIdent("as")&&!e.setIdentifier(this._parseIdent([jr.Module]))&&!this.acceptDelim("*"))return this.finish(e,bo.IdentifierOrWildcardExpected);if(this.acceptIdent("with")){if(!this.accept(qn.ParenthesisL))return this.finish(e,bo.LeftParenthesisExpected,[qn.ParenthesisR]);if(!e.getParameters().addChild(this._parseModuleConfigDeclaration()))return this.finish(e,bo.VariableNameExpected);while(this.accept(qn.Comma)){if(this.peek(qn.ParenthesisR))break;if(!e.getParameters().addChild(this._parseModuleConfigDeclaration()))return this.finish(e,bo.VariableNameExpected)}if(!this.accept(qn.ParenthesisR))return this.finish(e,bo.RightParenthesisExpected)}}return this.accept(qn.SemiColon)||this.accept(qn.EOF)?this.finish(e):this.finish(e,bo.SemiColonExpected)},t.prototype._parseModuleConfigDeclaration=function(){var e=this.create(Ei);return e.setIdentifier(this._parseVariable())?this.accept(qn.Colon)&&e.setValue(this._parseExpr(!0))?!this.accept(qn.Exclamation)||!this.hasWhitespace()&&this.acceptIdent("default")?this.finish(e):this.finish(e,bo.UnknownKeyword):this.finish(e,bo.VariableValueExpected,[],[qn.Comma,qn.ParenthesisR]):null},t.prototype._parseForward=function(){if(!this.peekKeyword("@forward"))return null;var e=this.create(Fi);if(this.consumeToken(),!e.addChild(this._parseStringLiteral()))return this.finish(e,bo.StringLiteralExpected);if(this.acceptIdent("with")){if(!this.accept(qn.ParenthesisL))return this.finish(e,bo.LeftParenthesisExpected,[qn.ParenthesisR]);if(!e.getParameters().addChild(this._parseModuleConfigDeclaration()))return this.finish(e,bo.VariableNameExpected);while(this.accept(qn.Comma)){if(this.peek(qn.ParenthesisR))break;if(!e.getParameters().addChild(this._parseModuleConfigDeclaration()))return this.finish(e,bo.VariableNameExpected)}if(!this.accept(qn.ParenthesisR))return this.finish(e,bo.RightParenthesisExpected)}if(!this.peek(qn.SemiColon)&&!this.peek(qn.EOF)){if(!this.peekRegExp(qn.Ident,/as|hide|show/))return this.finish(e,bo.UnknownKeyword);if(this.acceptIdent("as")){var t=this._parseIdent([jr.Forward]);if(!e.setIdentifier(t))return this.finish(e,bo.IdentifierExpected);if(this.hasWhitespace()||!this.acceptDelim("*"))return this.finish(e,bo.WildcardExpected)}if((this.peekIdent("hide")||this.peekIdent("show"))&&!e.addChild(this._parseForwardVisibility()))return this.finish(e,bo.IdentifierOrVariableExpected)}return this.accept(qn.SemiColon)||this.accept(qn.EOF)?this.finish(e):this.finish(e,bo.SemiColonExpected)},t.prototype._parseForwardVisibility=function(){var e=this.create(Di);e.setIdentifier(this._parseIdent());while(e.addChild(this._parseVariable()||this._parseIdent()))this.accept(qn.Comma);return e.getChildren().length>1?e:null},t.prototype._parseSupportsCondition=function(){return this._parseInterpolation()||e.prototype._parseSupportsCondition.call(this)},t}(ss),Ic=function(){var e=function(t,n){return e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])},e(t,n)};return function(t,n){if("function"!==typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),Mc=mo(),Pc=function(e){function t(n,r){var i=e.call(this,"$",n,r)||this;return Oc(t.scssModuleLoaders),Oc(t.scssModuleBuiltIns),i}return Ic(t,e),t.prototype.isImportPathParent=function(t){return t===Kr.Forward||t===Kr.Use||e.prototype.isImportPathParent.call(this,t)},t.prototype.getCompletionForImportPath=function(n,r){var i=n.getParent().type;if(i===Kr.Forward||i===Kr.Use)for(var o=0,s=t.scssModuleBuiltIns;o0){var t="string"===typeof e.documentation?{kind:"markdown",value:e.documentation}:{kind:"markdown",value:e.documentation.value};t.value+="\n\n",t.value+=e.references.map((function(e){return"["+e.name+"]("+e.url+")"})).join(" | "),e.documentation=t}}))}var Lc=function(){var e=function(t,n){return e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])},e(t,n)};return function(t,n){if("function"!==typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),Wc="/".charCodeAt(0),Vc="\n".charCodeAt(0),Uc="\r".charCodeAt(0),Kc="\f".charCodeAt(0),jc="`".charCodeAt(0),Bc=".".charCodeAt(0),qc=qn.CustomToken,$c=qc++,Hc=function(e){function t(){return null!==e&&e.apply(this,arguments)||this}return Lc(t,e),t.prototype.scanNext=function(t){var n=this.escapedJavaScript();return null!==n?this.finishToken(t,n):this.stream.advanceIfChars([Bc,Bc,Bc])?this.finishToken(t,$c):e.prototype.scanNext.call(this,t)},t.prototype.comment=function(){return!!e.prototype.comment.call(this)||!(this.inURL||!this.stream.advanceIfChars([Wc,Wc]))&&(this.stream.advanceWhileChar((function(e){switch(e){case Vc:case Uc:case Kc:return!1;default:return!0}})),!0)},t.prototype.escapedJavaScript=function(){var e=this.stream.peekChar();return e===jc?(this.stream.advance(1),this.stream.advanceWhileChar((function(e){return e!==jc})),this.stream.advanceIfChar(jc)?qn.EscapedJavaScript:qn.BadEscapedJavaScript):null},t}(Pr),Gc=function(){var e=function(t,n){return e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])},e(t,n)};return function(t,n){if("function"!==typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),Jc=function(e){function t(){return e.call(this,new Hc)||this}return Gc(t,e),t.prototype._parseStylesheetStatement=function(t){return void 0===t&&(t=!1),this.peek(qn.AtKeyword)?this._parseVariableDeclaration()||this._parsePlugin()||e.prototype._parseStylesheetAtStatement.call(this,t):this._tryParseMixinDeclaration()||this._tryParseMixinReference()||this._parseFunction()||this._parseRuleset(!0)},t.prototype._parseImport=function(){if(!this.peekKeyword("@import")&&!this.peekKeyword("@import-once"))return null;var e=this.create(ki);if(this.consumeToken(),this.accept(qn.ParenthesisL)){if(!this.accept(qn.Ident))return this.finish(e,bo.IdentifierExpected,[qn.SemiColon]);do{if(!this.accept(qn.Comma))break}while(this.accept(qn.Ident));if(!this.accept(qn.ParenthesisR))return this.finish(e,bo.RightParenthesisExpected,[qn.SemiColon])}return e.addChild(this._parseURILiteral())||e.addChild(this._parseStringLiteral())?(this.peek(qn.SemiColon)||this.peek(qn.EOF)||e.setMedialist(this._parseMediaQueryList()),this.finish(e)):this.finish(e,bo.URIOrStringExpected,[qn.SemiColon])},t.prototype._parsePlugin=function(){if(!this.peekKeyword("@plugin"))return null;var e=this.createNode(Kr.Plugin);return this.consumeToken(),e.addChild(this._parseStringLiteral())?this.accept(qn.SemiColon)?this.finish(e):this.finish(e,bo.SemiColonExpected):this.finish(e,bo.StringLiteralExpected)},t.prototype._parseMediaQuery=function(){var t=e.prototype._parseMediaQuery.call(this);if(!t){var n=this.create(Ii);return n.addChild(this._parseVariable())?this.finish(n):null}return t},t.prototype._parseMediaDeclaration=function(e){return void 0===e&&(e=!1),this._tryParseRuleset(e)||this._tryToParseDeclaration()||this._tryParseMixinDeclaration()||this._tryParseMixinReference()||this._parseDetachedRuleSetMixin()||this._parseStylesheetStatement(e)},t.prototype._parseMediaFeatureName=function(){return this._parseIdent()||this._parseVariable()},t.prototype._parseVariableDeclaration=function(e){void 0===e&&(e=[]);var t=this.create(Xi),n=this.mark();if(!t.setVariable(this._parseVariable(!0)))return null;if(!this.accept(qn.Colon))return this.restoreAtMark(n),null;if(this.prevToken&&(t.colonPosition=this.prevToken.offset),t.setValue(this._parseDetachedRuleSet()))t.needsSemicolon=!1;else if(!t.setValue(this._parseExpr()))return this.finish(t,bo.VariableValueExpected,[],e);return t.addChild(this._parsePrio()),this.peek(qn.SemiColon)&&(t.semicolonPosition=this.token.offset),this.finish(t)},t.prototype._parseDetachedRuleSet=function(){var e=this.mark();if(this.peekDelim("#")||this.peekDelim(".")){if(this.consumeToken(),this.hasWhitespace()||!this.accept(qn.ParenthesisL))return this.restoreAtMark(e),null;var t=this.create(ro);if(t.getParameters().addChild(this._parseMixinParameter()))while(this.accept(qn.Comma)||this.accept(qn.SemiColon)){if(this.peek(qn.ParenthesisR))break;t.getParameters().addChild(this._parseMixinParameter())||this.markError(t,bo.IdentifierExpected,[],[qn.ParenthesisR])}if(!this.accept(qn.ParenthesisR))return this.restoreAtMark(e),null}if(!this.peek(qn.CurlyL))return null;var n=this.create(ei);return this._parseBody(n,this._parseDetachedRuleSetBody.bind(this)),this.finish(n)},t.prototype._parseDetachedRuleSetBody=function(){return this._tryParseKeyframeSelector()||this._parseRuleSetDeclaration()},t.prototype._addLookupChildren=function(e){if(!e.addChild(this._parseLookupValue()))return!1;var t=!1;while(1){if(this.peek(qn.BracketL)&&(t=!0),!e.addChild(this._parseLookupValue()))break;t=!1}return!t},t.prototype._parseLookupValue=function(){var e=this.create(Jr),t=this.mark();return this.accept(qn.BracketL)&&((e.addChild(this._parseVariable(!1,!0))||e.addChild(this._parsePropertyIdentifier()))&&this.accept(qn.BracketR)||this.accept(qn.BracketR))?e:(this.restoreAtMark(t),null)},t.prototype._parseVariable=function(e,t){void 0===e&&(e=!1),void 0===t&&(t=!1);var n=!e&&this.peekDelim("$");if(!this.peekDelim("@")&&!n&&!this.peek(qn.AtKeyword))return null;var r=this.create(Zi),i=this.mark();while(this.acceptDelim("@")||!e&&this.acceptDelim("$"))if(this.hasWhitespace())return this.restoreAtMark(i),null;return(this.accept(qn.AtKeyword)||this.accept(qn.Ident))&&(t||!this.peek(qn.BracketL)||this._addLookupChildren(r))?r:(this.restoreAtMark(i),null)},t.prototype._parseTermExpression=function(){return this._parseVariable()||this._parseEscaped()||e.prototype._parseTermExpression.call(this)||this._tryParseMixinReference(!1)},t.prototype._parseEscaped=function(){if(this.peek(qn.EscapedJavaScript)||this.peek(qn.BadEscapedJavaScript)){var e=this.createNode(Kr.EscapedValue);return this.consumeToken(),this.finish(e)}if(this.peekDelim("~")){e=this.createNode(Kr.EscapedValue);return this.consumeToken(),this.accept(qn.String)||this.accept(qn.EscapedJavaScript)?this.finish(e):this.finish(e,bo.TermExpected)}return null},t.prototype._parseOperator=function(){var t=this._parseGuardOperator();return t||e.prototype._parseOperator.call(this)},t.prototype._parseGuardOperator=function(){if(this.peekDelim(">")){var e=this.createNode(Kr.Operator);return this.consumeToken(),this.acceptDelim("="),e}if(this.peekDelim("=")){e=this.createNode(Kr.Operator);return this.consumeToken(),this.acceptDelim("<"),e}if(this.peekDelim("<")){e=this.createNode(Kr.Operator);return this.consumeToken(),this.acceptDelim("="),e}return null},t.prototype._parseRuleSetDeclaration=function(){return this.peek(qn.AtKeyword)?this._parseKeyframe()||this._parseMedia(!0)||this._parseImport()||this._parseSupports(!0)||this._parseDetachedRuleSetMixin()||this._parseVariableDeclaration()||e.prototype._parseRuleSetDeclarationAtStatement.call(this):this._tryParseMixinDeclaration()||this._tryParseRuleset(!0)||this._tryParseMixinReference()||this._parseFunction()||this._parseExtend()||e.prototype._parseRuleSetDeclaration.call(this)},t.prototype._parseKeyframeIdent=function(){return this._parseIdent([jr.Keyframe])||this._parseVariable()},t.prototype._parseKeyframeSelector=function(){return this._parseDetachedRuleSetMixin()||e.prototype._parseKeyframeSelector.call(this)},t.prototype._parseSimpleSelectorBody=function(){return this._parseSelectorCombinator()||e.prototype._parseSimpleSelectorBody.call(this)},t.prototype._parseSelector=function(e){var t=this.create(ni),n=!1;e&&(n=t.addChild(this._parseCombinator()));while(t.addChild(this._parseSimpleSelector())){n=!0;var r=this.mark();if(t.addChild(this._parseGuard())&&this.peek(qn.CurlyL))break;this.restoreAtMark(r),t.addChild(this._parseCombinator())}return n?this.finish(t):null},t.prototype._parseSelectorCombinator=function(){if(this.peekDelim("&")){var e=this.createNode(Kr.SelectorCombinator);this.consumeToken();while(!this.hasWhitespace()&&(this.acceptDelim("-")||this.accept(qn.Num)||this.accept(qn.Dimension)||e.addChild(this._parseIdent())||this.acceptDelim("&")));return this.finish(e)}return null},t.prototype._parseSelectorIdent=function(){if(!this.peekInterpolatedIdent())return null;var e=this.createNode(Kr.SelectorInterpolation),t=this._acceptInterpolatedIdent(e);return t?this.finish(e):null},t.prototype._parsePropertyIdentifier=function(e){void 0===e&&(e=!1);var t=/^[\w-]+/;if(!this.peekInterpolatedIdent()&&!this.peekRegExp(this.token.type,t))return null;var n=this.mark(),r=this.create(Yr);r.isCustomProperty=this.acceptDelim("-")&&this.acceptDelim("-");var i=!1;return i=e?r.isCustomProperty?r.addChild(this._parseIdent()):r.addChild(this._parseRegexp(t)):r.isCustomProperty?this._acceptInterpolatedIdent(r):this._acceptInterpolatedIdent(r,t),i?(e||this.hasWhitespace()||(this.acceptDelim("+"),this.hasWhitespace()||this.acceptIdent("_")),this.finish(r)):(this.restoreAtMark(n),null)},t.prototype.peekInterpolatedIdent=function(){return this.peek(qn.Ident)||this.peekDelim("@")||this.peekDelim("$")||this.peekDelim("-")},t.prototype._acceptInterpolatedIdent=function(e,t){var n=this,r=!1,i=function(){var e=n.mark();return n.acceptDelim("-")&&(n.hasWhitespace()||n.acceptDelim("-"),n.hasWhitespace())?(n.restoreAtMark(e),null):n._parseInterpolation()},o=t?function(){return n.acceptRegexp(t)}:function(){return n.accept(qn.Ident)};while(o()||e.addChild(this._parseInterpolation()||this.try(i)))if(r=!0,this.hasWhitespace())break;return r},t.prototype._parseInterpolation=function(){var e=this.mark();if(this.peekDelim("@")||this.peekDelim("$")){var t=this.createNode(Kr.Interpolation);return this.consumeToken(),this.hasWhitespace()||!this.accept(qn.CurlyL)?(this.restoreAtMark(e),null):t.addChild(this._parseIdent())?this.accept(qn.CurlyR)?this.finish(t):this.finish(t,bo.RightCurlyExpected):this.finish(t,bo.IdentifierExpected)}return null},t.prototype._tryParseMixinDeclaration=function(){var e=this.mark(),t=this.create(ro);if(!t.setIdentifier(this._parseMixinDeclarationIdentifier())||!this.accept(qn.ParenthesisL))return this.restoreAtMark(e),null;if(t.getParameters().addChild(this._parseMixinParameter()))while(this.accept(qn.Comma)||this.accept(qn.SemiColon)){if(this.peek(qn.ParenthesisR))break;t.getParameters().addChild(this._parseMixinParameter())||this.markError(t,bo.IdentifierExpected,[],[qn.ParenthesisR])}return this.accept(qn.ParenthesisR)?(t.setGuard(this._parseGuard()),this.peek(qn.CurlyL)?this._parseBody(t,this._parseMixInBodyDeclaration.bind(this)):(this.restoreAtMark(e),null)):(this.restoreAtMark(e),null)},t.prototype._parseMixInBodyDeclaration=function(){return this._parseFontFace()||this._parseRuleSetDeclaration()},t.prototype._parseMixinDeclarationIdentifier=function(){var e;if(this.peekDelim("#")||this.peekDelim(".")){if(e=this.create(Yr),this.consumeToken(),this.hasWhitespace()||!e.addChild(this._parseIdent()))return null}else{if(!this.peek(qn.Hash))return null;e=this.create(Yr),this.consumeToken()}return e.referenceTypes=[jr.Mixin],this.finish(e)},t.prototype._parsePseudo=function(){if(!this.peek(qn.Colon))return null;var t=this.mark(),n=this.create(Qi);return this.consumeToken(),this.acceptIdent("extend")?this._completeExtends(n):(this.restoreAtMark(t),e.prototype._parsePseudo.call(this))},t.prototype._parseExtend=function(){if(!this.peekDelim("&"))return null;var e=this.mark(),t=this.create(Qi);return this.consumeToken(),!this.hasWhitespace()&&this.accept(qn.Colon)&&this.acceptIdent("extend")?this._completeExtends(t):(this.restoreAtMark(e),null)},t.prototype._completeExtends=function(e){if(!this.accept(qn.ParenthesisL))return this.finish(e,bo.LeftParenthesisExpected);var t=e.getSelectors();if(!t.addChild(this._parseSelector(!0)))return this.finish(e,bo.SelectorExpected);while(this.accept(qn.Comma))if(!t.addChild(this._parseSelector(!0)))return this.finish(e,bo.SelectorExpected);return this.accept(qn.ParenthesisR)?this.finish(e):this.finish(e,bo.RightParenthesisExpected)},t.prototype._parseDetachedRuleSetMixin=function(){if(!this.peek(qn.AtKeyword))return null;var e=this.mark(),t=this.create(no);return!t.addChild(this._parseVariable(!0))||!this.hasWhitespace()&&this.accept(qn.ParenthesisL)?this.accept(qn.ParenthesisR)?this.finish(t):this.finish(t,bo.RightParenthesisExpected):(this.restoreAtMark(e),null)},t.prototype._tryParseMixinReference=function(e){void 0===e&&(e=!0);var t=this.mark(),n=this.create(no),r=this._parseMixinDeclarationIdentifier();while(r){this.acceptDelim(">");var i=this._parseMixinDeclarationIdentifier();if(!i)break;n.getNamespaces().addChild(r),r=i}if(!n.setIdentifier(r))return this.restoreAtMark(t),null;var o=!1;if(this.accept(qn.ParenthesisL)){if(o=!0,n.getArguments().addChild(this._parseMixinArgument()))while(this.accept(qn.Comma)||this.accept(qn.SemiColon)){if(this.peek(qn.ParenthesisR))break;if(!n.getArguments().addChild(this._parseMixinArgument()))return this.finish(n,bo.ExpressionExpected)}if(!this.accept(qn.ParenthesisR))return this.finish(n,bo.RightParenthesisExpected);r.referenceTypes=[jr.Mixin]}else r.referenceTypes=[jr.Mixin,jr.Rule];return this.peek(qn.BracketL)?e||this._addLookupChildren(n):n.addChild(this._parsePrio()),o||this.peek(qn.SemiColon)||this.peek(qn.CurlyR)||this.peek(qn.EOF)?this.finish(n):(this.restoreAtMark(t),null)},t.prototype._parseMixinArgument=function(){var e=this.create(pi),t=this.mark(),n=this._parseVariable();return n&&(this.accept(qn.Colon)?e.setIdentifier(n):this.restoreAtMark(t)),e.setValue(this._parseDetachedRuleSet()||this._parseExpr(!0))?this.finish(e):(this.restoreAtMark(t),null)},t.prototype._parseMixinParameter=function(){var e=this.create(hi);if(this.peekKeyword("@rest")){var t=this.create(Jr);return this.consumeToken(),this.accept($c)?(e.setIdentifier(this.finish(t)),this.finish(e)):this.finish(e,bo.DotExpected,[],[qn.Comma,qn.ParenthesisR])}if(this.peek($c)){var n=this.create(Jr);return this.consumeToken(),e.setIdentifier(this.finish(n)),this.finish(e)}var r=!1;return e.setIdentifier(this._parseVariable())&&(this.accept(qn.Colon),r=!0),e.setDefaultValue(this._parseDetachedRuleSet()||this._parseExpr(!0))||r?this.finish(e):null},t.prototype._parseGuard=function(){if(!this.peekIdent("when"))return null;var e=this.create(so);if(this.consumeToken(),e.isNegated=this.acceptIdent("not"),!e.getConditions().addChild(this._parseGuardCondition()))return this.finish(e,bo.ConditionExpected);while(this.acceptIdent("and")||this.accept(qn.Comma))if(!e.getConditions().addChild(this._parseGuardCondition()))return this.finish(e,bo.ConditionExpected);return this.finish(e)},t.prototype._parseGuardCondition=function(){if(!this.peek(qn.ParenthesisL))return null;var e=this.create(ao);return this.consumeToken(),e.addChild(this._parseExpr()),this.accept(qn.ParenthesisR)?this.finish(e):this.finish(e,bo.RightParenthesisExpected)},t.prototype._parseFunction=function(){var e=this.mark(),t=this.create(di);if(!t.setIdentifier(this._parseFunctionIdentifier()))return null;if(this.hasWhitespace()||!this.accept(qn.ParenthesisL))return this.restoreAtMark(e),null;if(t.getArguments().addChild(this._parseMixinArgument()))while(this.accept(qn.Comma)||this.accept(qn.SemiColon)){if(this.peek(qn.ParenthesisR))break;if(!t.getArguments().addChild(this._parseMixinArgument()))return this.finish(t,bo.ExpressionExpected)}return this.accept(qn.ParenthesisR)?this.finish(t):this.finish(t,bo.RightParenthesisExpected)},t.prototype._parseFunctionIdentifier=function(){if(this.peekDelim("%")){var t=this.create(Yr);return t.referenceTypes=[jr.Function],this.consumeToken(),this.finish(t)}return e.prototype._parseFunctionIdentifier.call(this)},t.prototype._parseURLArgument=function(){var t=this.mark(),n=e.prototype._parseURLArgument.call(this);if(!n||!this.peek(qn.ParenthesisR)){this.restoreAtMark(t);var r=this.create(Jr);return r.addChild(this._parseBinaryExpr()),this.finish(r)}return n},t}(ss),Xc=function(){var e=function(t,n){return e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])},e(t,n)};return function(t,n){if("function"!==typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),Yc=mo(),Zc=function(e){function t(t,n){return e.call(this,"@",t,n)||this}return Xc(t,e),t.prototype.createFunctionProposals=function(e,t,n,r){for(var i=0,o=e;i 50%"),example:"percentage(@number);",type:"percentage"},{name:"round",description:Yc("less.builtin.round","rounds a number to a number of places"),example:"round(number, [places: 0]);"},{name:"sqrt",description:Yc("less.builtin.sqrt","calculates square root of a number"),example:"sqrt(number);"},{name:"sin",description:Yc("less.builtin.sin","sine function"),example:"sin(number);"},{name:"tan",description:Yc("less.builtin.tan","tangent function"),example:"tan(number);"},{name:"atan",description:Yc("less.builtin.atan","arctangent - inverse of tangent function"),example:"atan(number);"},{name:"pi",description:Yc("less.builtin.pi","returns pi"),example:"pi();"},{name:"pow",description:Yc("less.builtin.pow","first argument raised to the power of the second argument"),example:"pow(@base, @exponent);"},{name:"mod",description:Yc("less.builtin.mod","first argument modulus second argument"),example:"mod(number, number);"},{name:"min",description:Yc("less.builtin.min","returns the lowest of one or more values"),example:"min(@x, @y);"},{name:"max",description:Yc("less.builtin.max","returns the lowest of one or more values"),example:"max(@x, @y);"}],t.colorProposals=[{name:"argb",example:"argb(@color);",description:Yc("less.builtin.argb","creates a #AARRGGBB")},{name:"hsl",example:"hsl(@hue, @saturation, @lightness);",description:Yc("less.builtin.hsl","creates a color")},{name:"hsla",example:"hsla(@hue, @saturation, @lightness, @alpha);",description:Yc("less.builtin.hsla","creates a color")},{name:"hsv",example:"hsv(@hue, @saturation, @value);",description:Yc("less.builtin.hsv","creates a color")},{name:"hsva",example:"hsva(@hue, @saturation, @value, @alpha);",description:Yc("less.builtin.hsva","creates a color")},{name:"hue",example:"hue(@color);",description:Yc("less.builtin.hue","returns the `hue` channel of `@color` in the HSL space")},{name:"saturation",example:"saturation(@color);",description:Yc("less.builtin.saturation","returns the `saturation` channel of `@color` in the HSL space")},{name:"lightness",example:"lightness(@color);",description:Yc("less.builtin.lightness","returns the `lightness` channel of `@color` in the HSL space")},{name:"hsvhue",example:"hsvhue(@color);",description:Yc("less.builtin.hsvhue","returns the `hue` channel of `@color` in the HSV space")},{name:"hsvsaturation",example:"hsvsaturation(@color);",description:Yc("less.builtin.hsvsaturation","returns the `saturation` channel of `@color` in the HSV space")},{name:"hsvvalue",example:"hsvvalue(@color);",description:Yc("less.builtin.hsvvalue","returns the `value` channel of `@color` in the HSV space")},{name:"red",example:"red(@color);",description:Yc("less.builtin.red","returns the `red` channel of `@color`")},{name:"green",example:"green(@color);",description:Yc("less.builtin.green","returns the `green` channel of `@color`")},{name:"blue",example:"blue(@color);",description:Yc("less.builtin.blue","returns the `blue` channel of `@color`")},{name:"alpha",example:"alpha(@color);",description:Yc("less.builtin.alpha","returns the `alpha` channel of `@color`")},{name:"luma",example:"luma(@color);",description:Yc("less.builtin.luma","returns the `luma` value (perceptual brightness) of `@color`")},{name:"saturate",example:"saturate(@color, 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