How to use stringFromCode method in Playwright Internal

Best JavaScript code snippet using playwright-internal

parse-css.js

Source:parse-css.js Github

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...27 this.message = message;28};29InvalidCharacterError.prototype = new Error;30InvalidCharacterError.prototype.name = 'InvalidCharacterError';31function stringFromCode(code) {32 if(code <= 0xffff) return String.fromCharCode(code);33 // Otherwise, encode astral char as surrogate pair.34 code -= Math.pow(2, 20);35 var lead = Math.floor(code/Math.pow(2, 10)) + 0xd800;36 var trail = code % Math.pow(2, 10) + 0xdc00;37 return String.fromCharCode(lead) + String.fromCharCode(trail);38}39function* tokenize(str, options) {40 if (options === undefined) {41 options = {};42 }43 if (options.loc === undefined) {44 options.loc = false;45 }46 if (options.offsets === undefined) {47 options.offsets = false;48 }49 if (options.keepComments === undefined) {50 options.keepComments = false;51 }52 if (options.startOffset === undefined) {53 options.startOffset = 0;54 }55 var i = options.startOffset - 1;56 var code;57 // Line number information.58 var line = 0;59 var column = 0;60 // The only use of lastLineLength is in reconsume().61 var lastLineLength = 0;62 var incrLineno = function() {63 line += 1;64 lastLineLength = column;65 column = 0;66 };67 var locStart = {line:line, column:column};68 var offsetStart = i;69 var codepoint = function(i) {70 if(i >= str.length) {71 return -1;72 }73 return str.charCodeAt(i);74 };75 var next = function(num) {76 if(num === undefined)77 num = 1;78 if(num > 3)79 throw "Spec Error: no more than three codepoints of lookahead.";80 var rcode;81 for (var offset = i + 1; num-- > 0; ++offset) {82 rcode = codepoint(offset);83 if (rcode === 0xd && codepoint(offset+1) === 0xa) {84 ++offset;85 rcode = 0xa;86 } else if (rcode === 0xd || rcode === 0xc) {87 rcode = 0xa;88 } else if (rcode === 0x0) {89 rcode = 0xfffd;90 }91 }92 return rcode;93 };94 var consume = function(num) {95 if(num === undefined)96 num = 1;97 while(num-- > 0) {98 ++i;99 code = codepoint(i);100 if (code === 0xd && codepoint(i+1) === 0xa) {101 ++i;102 code = 0xa;103 } else if (code === 0xd || code === 0xc) {104 code = 0xa;105 } else if (code === 0x0) {106 code = 0xfffd;107 }108 if(newline(code)) incrLineno();109 else column++;110 }111 return true;112 };113 var reconsume = function() {114 i -= 1; // This is ok even in the \r\n case.115 if (newline(code)) {116 line -= 1;117 column = lastLineLength;118 } else {119 column -= 1;120 }121 return true;122 };123 var eof = function(codepoint) {124 if(codepoint === undefined) codepoint = code;125 return codepoint == -1;126 };127 var donothing = function() {};128 var parseerror = function() { console.log("Parse error at index " + i + ", processing codepoint 0x" + code.toString(16) + ".");return true; };129 var consumeAToken = function() {130 consume();131 if (!options.keepComments) {132 while(code == 0x2f && next() == 0x2a) {133 consumeAComment();134 consume();135 }136 }137 locStart.line = line;138 locStart.column = column;139 offsetStart = i;140 if(whitespace(code)) {141 while(whitespace(next())) consume();142 return new WhitespaceToken;143 }144 else if(code == 0x2f && next() == 0x2a) return consumeAComment();145 else if(code == 0x22) return consumeAStringToken();146 else if(code == 0x23) {147 if(namechar(next()) || areAValidEscape(next(1), next(2))) {148 var token = new HashToken();149 if(wouldStartAnIdentifier(next(1), next(2), next(3))) {150 token.type = "id";151 token.tokenType = "id";152 }153 token.value = consumeAName();154 token.text = token.value;155 return token;156 } else {157 return new DelimToken(code);158 }159 }160 else if(code == 0x24) {161 if(next() == 0x3d) {162 consume();163 return new SuffixMatchToken();164 } else {165 return new DelimToken(code);166 }167 }168 else if(code == 0x27) return consumeAStringToken();169 else if(code == 0x28) return new OpenParenToken();170 else if(code == 0x29) return new CloseParenToken();171 else if(code == 0x2a) {172 if(next() == 0x3d) {173 consume();174 return new SubstringMatchToken();175 } else {176 return new DelimToken(code);177 }178 }179 else if(code == 0x2b) {180 if(startsWithANumber()) {181 reconsume();182 return consumeANumericToken();183 } else {184 return new DelimToken(code);185 }186 }187 else if(code == 0x2c) return new CommaToken();188 else if(code == 0x2d) {189 if(startsWithANumber()) {190 reconsume();191 return consumeANumericToken();192 } else if(next(1) == 0x2d && next(2) == 0x3e) {193 consume(2);194 return new CDCToken();195 } else if(startsWithAnIdentifier()) {196 reconsume();197 return consumeAnIdentlikeToken();198 } else {199 return new DelimToken(code);200 }201 }202 else if(code == 0x2e) {203 if(startsWithANumber()) {204 reconsume();205 return consumeANumericToken();206 } else {207 return new DelimToken(code);208 }209 }210 else if(code == 0x3a) return new ColonToken;211 else if(code == 0x3b) return new SemicolonToken;212 else if(code == 0x3c) {213 if(next(1) == 0x21 && next(2) == 0x2d && next(3) == 0x2d) {214 consume(3);215 return new CDOToken();216 } else {217 return new DelimToken(code);218 }219 }220 else if(code == 0x40) {221 if(wouldStartAnIdentifier(next(1), next(2), next(3))) {222 return new AtKeywordToken(consumeAName());223 } else {224 return new DelimToken(code);225 }226 }227 else if(code == 0x5b) return new OpenSquareToken();228 else if(code == 0x5c) {229 if(startsWithAValidEscape()) {230 reconsume();231 return consumeAnIdentlikeToken();232 } else {233 parseerror();234 return new DelimToken(code);235 }236 }237 else if(code == 0x5d) return new CloseSquareToken();238 else if(code == 0x5e) {239 if(next() == 0x3d) {240 consume();241 return new PrefixMatchToken();242 } else {243 return new DelimToken(code);244 }245 }246 else if(code == 0x7b) return new OpenCurlyToken();247 else if(code == 0x7c) {248 if(next() == 0x3d) {249 consume();250 return new DashMatchToken();251 // } else if(next() == 0x7c) {252 // consume();253 // return new ColumnToken();254 } else {255 return new DelimToken(code);256 }257 }258 else if(code == 0x7d) return new CloseCurlyToken();259 else if(code == 0x7e) {260 if(next() == 0x3d) {261 consume();262 return new IncludeMatchToken();263 } else {264 return new DelimToken(code);265 }266 }267 else if(digit(code)) {268 reconsume();269 return consumeANumericToken();270 }271 else if(namestartchar(code)) {272 reconsume();273 return consumeAnIdentlikeToken();274 }275 else if(eof()) return new EOFToken();276 else return new DelimToken(code);277 };278 var consumeAComment = function() {279 consume();280 var comment = "";281 while(true) {282 consume();283 if(code == 0x2a && next() == 0x2f) {284 consume();285 break;286 } else if(eof()) {287 break;288 }289 comment += stringFromCode(code);290 }291 return new CommentToken(comment);292 };293 var consumeANumericToken = function() {294 var num = consumeANumber();295 var token;296 if(wouldStartAnIdentifier(next(1), next(2), next(3))) {297 token = new DimensionToken();298 token.value = num.value;299 token.repr = num.repr;300 token.type = num.type;301 token.unit = consumeAName();302 token.text = token.unit;303 } else if(next() == 0x25) {304 consume();305 token = new PercentageToken();306 token.value = num.value;307 token.repr = num.repr;308 } else {309 var token = new NumberToken();310 token.value = num.value;311 token.repr = num.repr;312 token.type = num.type;313 }314 token.number = token.value;315 token.isInteger = token.type === "integer";316 // FIXME hasSign317 return token;318 };319 var consumeAnIdentlikeToken = function() {320 var str = consumeAName();321 if(str.toLowerCase() == "url" && next() == 0x28) {322 consume();323 while(whitespace(next(1)) && whitespace(next(2)))324 consume();325 if((next() == 0x22 || next() == 0x27) ||326 (whitespace(next()) && (next(2) == 0x22 || next(2) == 0x27))) {327 while(whitespace(next()))328 consume();329 consume();330 let str = consumeAStringToken();331 while(whitespace(next()))332 consume();333 // The closing paren.334 consume();335 return new URLToken(str.text);336 } else {337 return consumeAURLToken();338 }339 } else if(next() == 0x28) {340 consume();341 return new FunctionToken(str);342 } else {343 return new IdentToken(str);344 }345 };346 var consumeAStringToken = function(endingCodePoint) {347 if(endingCodePoint === undefined) endingCodePoint = code;348 var string = "";349 while(consume()) {350 if(code == endingCodePoint || eof()) {351 return new StringToken(string);352 } else if(newline(code)) {353 reconsume();354 return new BadStringToken(string);355 } else if(code == 0x5c) {356 if(eof(next())) {357 donothing();358 } else if(newline(next())) {359 consume();360 } else {361 string += stringFromCode(consumeEscape());362 }363 } else {364 string += stringFromCode(code);365 }366 }367 };368 var consumeAURLToken = function() {369 var token = new URLToken("");370 while(whitespace(next())) consume();371 if(eof(next())) return token;372 while(consume()) {373 if(code == 0x29 || eof()) {374 break;375 } else if(whitespace(code)) {376 while(whitespace(next()))377 consume();378 if(next() == 0x29 || eof(next())) {379 consume();380 break;381 } else {382 consumeTheRemnantsOfABadURL();383 return new BadURLToken();384 }385 } else if(code == 0x22 || code == 0x27 || code == 0x28 || nonprintable(code)) {386 parseerror();387 consumeTheRemnantsOfABadURL();388 return new BadURLToken();389 } else if(code == 0x5c) {390 if(startsWithAValidEscape()) {391 token.value += stringFromCode(consumeEscape());392 } else {393 parseerror();394 consumeTheRemnantsOfABadURL();395 return new BadURLToken();396 }397 } else {398 token.value += stringFromCode(code);399 }400 }401 token.text = token.value;402 return token;403 };404 var consumeEscape = function() {405 // Assume the the current character is the \406 // and the next code point is not a newline.407 consume();408 if(hexdigit(code)) {409 // Consume 1-6 hex digits410 var digits = [code];411 for(var total = 0; total < 5; total++) {412 if(hexdigit(next())) {413 consume();414 digits.push(code);415 } else {416 break;417 }418 }419 if(whitespace(next())) consume();420 var value = parseInt(digits.map(function(x){return String.fromCharCode(x);}).join(''), 16);421 if( value > maximumallowedcodepoint ) value = 0xfffd;422 return value;423 } else if(eof()) {424 return 0xfffd;425 } else {426 return code;427 }428 };429 var areAValidEscape = function(c1, c2) {430 if(c1 != 0x5c) return false;431 if(newline(c2)) return false;432 return true;433 };434 var startsWithAValidEscape = function() {435 return areAValidEscape(code, next());436 };437 var wouldStartAnIdentifier = function(c1, c2, c3) {438 if(c1 == 0x2d) {439 return namestartchar(c2) || c2 == 0x2d || areAValidEscape(c2, c3);440 } else if(namestartchar(c1)) {441 return true;442 } else if(c1 == 0x5c) {443 return areAValidEscape(c1, c2);444 } else {445 return false;446 }447 };448 var startsWithAnIdentifier = function() {449 return wouldStartAnIdentifier(code, next(1), next(2));450 };451 var wouldStartANumber = function(c1, c2, c3) {452 if(c1 == 0x2b || c1 == 0x2d) {453 if(digit(c2)) return true;454 if(c2 == 0x2e && digit(c3)) return true;455 return false;456 } else if(c1 == 0x2e) {457 if(digit(c2)) return true;458 return false;459 } else if(digit(c1)) {460 return true;461 } else {462 return false;463 }464 };465 var startsWithANumber = function() {466 return wouldStartANumber(code, next(1), next(2));467 };468 var consumeAName = function() {469 var result = "";470 while(consume()) {471 if(namechar(code)) {472 result += stringFromCode(code);473 } else if(startsWithAValidEscape()) {474 result += stringFromCode(consumeEscape());475 } else {476 reconsume();477 return result;478 }479 }480 };481 var consumeANumber = function() {482 var repr = [];483 var type = "integer";484 if(next() == 0x2b || next() == 0x2d) {485 consume();486 repr += stringFromCode(code);487 }488 while(digit(next())) {489 consume();490 repr += stringFromCode(code);491 }492 if(next(1) == 0x2e && digit(next(2))) {493 consume();494 repr += stringFromCode(code);495 consume();496 repr += stringFromCode(code);497 type = "number";498 while(digit(next())) {499 consume();500 repr += stringFromCode(code);501 }502 }503 var c1 = next(1), c2 = next(2), c3 = next(3);504 if((c1 == 0x45 || c1 == 0x65) && digit(c2)) {505 consume();506 repr += stringFromCode(code);507 consume();508 repr += stringFromCode(code);509 type = "number";510 while(digit(next())) {511 consume();512 repr += stringFromCode(code);513 }514 } else if((c1 == 0x45 || c1 == 0x65) && (c2 == 0x2b || c2 == 0x2d) && digit(c3)) {515 consume();516 repr += stringFromCode(code);517 consume();518 repr += stringFromCode(code);519 consume();520 repr += stringFromCode(code);521 type = "number";522 while(digit(next())) {523 consume();524 repr += stringFromCode(code);525 }526 }527 var value = convertAStringToANumber(repr);528 return {type:type, value:value, repr:repr};529 };530 var convertAStringToANumber = function(string) {531 // CSS's number rules are identical to JS, afaik.532 return +string;533 };534 var consumeTheRemnantsOfABadURL = function() {535 while(consume()) {536 if(code == 0x2d || eof()) {537 return;538 } else if(startsWithAValidEscape()) {539 consumeEscape();540 donothing();541 } else {542 donothing();543 }544 }545 };546 var iterationCount = 0;547 while(!eof(next())) {548 var token = consumeAToken();549 if (options.loc) {550 token.loc = {};551 token.loc.start = {line:locStart.line, column:locStart.column};552 token.loc.end = {line:line, column:column};553 }554 if (options.offsets) {555 token.startOffset = offsetStart;556 token.endOffset = i + 1;557 }558 yield token;559 iterationCount++;560 if(iterationCount > str.length*2) return "I'm infinite-looping!";561 }562}563function CSSParserToken() { throw "Abstract Base Class"; }564CSSParserToken.prototype.toJSON = function() {565 return {token: this.tokenType};566};567CSSParserToken.prototype.toString = function() { return this.tokenType; };568CSSParserToken.prototype.toSource = function() { return ''+this; };569function BadStringToken(text) {570 this.text = text;571 return this;572}573BadStringToken.prototype = Object.create(CSSParserToken.prototype);574BadStringToken.prototype.tokenType = "bad_string";575function BadURLToken() { return this; }576BadURLToken.prototype = Object.create(CSSParserToken.prototype);577BadURLToken.prototype.tokenType = "bad_url";578function WhitespaceToken() { return this; }579WhitespaceToken.prototype = Object.create(CSSParserToken.prototype);580WhitespaceToken.prototype.tokenType = "whitespace";581WhitespaceToken.prototype.toString = function() { return "WS"; };582WhitespaceToken.prototype.toSource = function() { return " "; };583function CDOToken() { return this; }584CDOToken.prototype = Object.create(CSSParserToken.prototype);585CDOToken.prototype.tokenType = "htmlcomment";586CDOToken.prototype.toSource = function() { return "<!--"; };587function CDCToken() { return this; }588CDCToken.prototype = Object.create(CSSParserToken.prototype);589CDCToken.prototype.tokenType = "htmlcomment";590CDCToken.prototype.toSource = function() { return "-->"; };591function ColonToken() { return this; }592ColonToken.prototype = Object.create(CSSParserToken.prototype);593ColonToken.prototype.tokenType = "symbol";594ColonToken.prototype.text = ":";595function SemicolonToken() { return this; }596SemicolonToken.prototype = Object.create(CSSParserToken.prototype);597SemicolonToken.prototype.tokenType = "symbol";598SemicolonToken.prototype.text = ";";599function CommaToken() { return this; }600CommaToken.prototype = Object.create(CSSParserToken.prototype);601CommaToken.prototype.tokenType = "symbol";602CommaToken.prototype.text = ",";603function GroupingToken() { throw "Abstract Base Class"; }604GroupingToken.prototype = Object.create(CSSParserToken.prototype);605function OpenCurlyToken() { this.value = "{"; this.mirror = "}"; return this; }606OpenCurlyToken.prototype = Object.create(GroupingToken.prototype);607OpenCurlyToken.prototype.tokenType = "symbol";608OpenCurlyToken.prototype.text = "{";609function CloseCurlyToken() { this.value = "}"; this.mirror = "{"; return this; }610CloseCurlyToken.prototype = Object.create(GroupingToken.prototype);611CloseCurlyToken.prototype.tokenType = "symbol";612CloseCurlyToken.prototype.text = "}";613function OpenSquareToken() { this.value = "["; this.mirror = "]"; return this; }614OpenSquareToken.prototype = Object.create(GroupingToken.prototype);615OpenSquareToken.prototype.tokenType = "symbol";616OpenSquareToken.prototype.text = "[";617function CloseSquareToken() { this.value = "]"; this.mirror = "["; return this; }618CloseSquareToken.prototype = Object.create(GroupingToken.prototype);619CloseSquareToken.prototype.tokenType = "symbol";620CloseSquareToken.prototype.text = "]";621function OpenParenToken() { this.value = "("; this.mirror = ")"; return this; }622OpenParenToken.prototype = Object.create(GroupingToken.prototype);623OpenParenToken.prototype.tokenType = "symbol";624OpenParenToken.prototype.text = "(";625function CloseParenToken() { this.value = ")"; this.mirror = "("; return this; }626CloseParenToken.prototype = Object.create(GroupingToken.prototype);627CloseParenToken.prototype.tokenType = "symbol";628CloseParenToken.prototype.text = ")";629function IncludeMatchToken() { return this; }630IncludeMatchToken.prototype = Object.create(CSSParserToken.prototype);631IncludeMatchToken.prototype.tokenType = "includes";632function DashMatchToken() { return this; }633DashMatchToken.prototype = Object.create(CSSParserToken.prototype);634DashMatchToken.prototype.tokenType = "dashmatch";635function PrefixMatchToken() { return this; }636PrefixMatchToken.prototype = Object.create(CSSParserToken.prototype);637PrefixMatchToken.prototype.tokenType = "beginsmatch";638function SuffixMatchToken() { return this; }639SuffixMatchToken.prototype = Object.create(CSSParserToken.prototype);640SuffixMatchToken.prototype.tokenType = "endsmatch";641function SubstringMatchToken() { return this; }642SubstringMatchToken.prototype = Object.create(CSSParserToken.prototype);643SubstringMatchToken.prototype.tokenType = "containsmatch";644function ColumnToken() { return this; }645ColumnToken.prototype = Object.create(CSSParserToken.prototype);646ColumnToken.prototype.tokenType = "||";647function EOFToken() { return this; }648EOFToken.prototype = Object.create(CSSParserToken.prototype);649EOFToken.prototype.tokenType = "EOF";650EOFToken.prototype.toSource = function() { return ""; };651function DelimToken(code) {652 this.value = stringFromCode(code);653 this.text = this.value;654 return this;655}656DelimToken.prototype = Object.create(CSSParserToken.prototype);657DelimToken.prototype.tokenType = "symbol";658DelimToken.prototype.toString = function() { return "DELIM("+this.value+")"; };659DelimToken.prototype.toJSON = function() {660 var json = this.constructor.prototype.constructor.prototype.toJSON.call(this);661 json.value = this.value;662 return json;663};664DelimToken.prototype.toSource = function() {665 if(this.value == "\\")666 return "\\\n";...

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tokenize-css.js

Source:tokenize-css.js Github

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...182/**183 * @param {number} code184 * @return {string}185 */186function stringFromCode(code) {187 if (code <= 0xffff) {188 return String.fromCharCode(code);189 }190 // Otherwise, encode astral char as surrogate pair.191 code -= Math.pow(2, 20);192 const lead = Math.floor(code / Math.pow(2, 10)) + 0xd800;193 const trail = code % Math.pow(2, 10) + 0xdc00;194 return String.fromCharCode(lead) + String.fromCharCode(trail);195}196/**197 * Tokenizer class. Used internally by the tokenize function.198 * @private199 */200class Tokenizer {201 /**202 * @param {string} strIn203 * @param {number|undefined} line204 * @param {number|undefined} col205 * @param {!Array<!ErrorToken>} errors output array for the206 * errors.207 */208 constructor(strIn, line, col, errors) {209 this.tokens_ = [];210 /**211 * @private212 * @type {!Array<!ErrorToken>}213 */214 this.errors_ = errors;215 /**216 * @private217 * @type {!Array<number>}218 */219 this.codepoints_ = preprocess(strIn);220 /**221 * @private222 * @type {number}223 */224 this.pos_ = -1;225 /**226 * @private227 * @type {number}228 */229 this.code_;230 // Line number information.231 let eofToken;232 /** @private @type {!Array<number>} */233 this.lineByPos_ = [];234 /** @private @type {!Array<number>} */235 this.colByPos_ = [];236 let currentLine = line || 1;237 let currentCol = col || 0;238 for (let i = 0; i < this.codepoints_.length; ++i) {239 this.lineByPos_[i] = currentLine;240 this.colByPos_[i] = currentCol;241 if (newline(this.codepoints_[i])) {242 ++currentLine;243 currentCol = 0;244 } else {245 ++currentCol;246 }247 }248 eofToken = new EOFToken();249 eofToken.line = currentLine;250 eofToken.col = currentCol;251 let iterationCount = 0;252 while (!this.eof(this.next())) {253 const token = this.consumeAToken();254 if (token.tokenType === TokenType.ERROR) {255 this.errors_.push(/** @type {!ErrorToken} */ (token));256 } else {257 this.tokens_.push(token);258 }259 iterationCount++;260 asserts.assert(261 iterationCount <= this.codepoints_.length * 2,262 'Internal Error: infinite-looping');263 }264 this.tokens_.push(eofToken);265 }266 /**267 * @return {number}268 */269 getLine() {270 const pos = Math.min(this.pos_, this.lineByPos_.length - 1);271 return (pos < 0) ? 1 : this.lineByPos_[this.pos_];272 }273 /**274 * @return {number}275 */276 getCol() {277 const pos = Math.min(this.pos_, this.colByPos_.length - 1);278 return (pos < 0) ? 0 : this.colByPos_[this.pos_];279 }280 /**281 * @return {!Array<!Token>}282 */283 getTokens() {284 return this.tokens_;285 }286 /**287 * Returns the codepoint at the given position.288 * @param {number} num289 * @return {number}290 */291 codepoint(num) {292 if (num >= this.codepoints_.length) {293 return -1;294 }295 return this.codepoints_[num];296 }297 /**298 * Peeks ahead and returns the codepoint opt_num positions ahead.299 * @param {number=} opt_num300 * @return {number}301 */302 next(opt_num) {303 const num = opt_num || 1;304 asserts.assert(305 num <= 3, 'Spec Error: no more than three codepoints of lookahead.');306 return this.codepoint(this.pos_ + num);307 }308 /**309 * Moves ahead opt_num positions in the string. May move past the310 * end of the string.311 * @param {number=} opt_num312 */313 consume(opt_num) {314 const num = opt_num || 1;315 this.pos_ += num;316 this.code_ = this.codepoint(this.pos_);317 }318 /**319 * Backs up exactly one position in the string.320 */321 reconsume() {322 this.pos_ -= 1;323 // TODO(johannes): Oddly, adding the following breaks the test with324 // internal errors. Investigate.325 // this.code_ = this.codepoint(this.pos_);326 }327 /**328 * @param {number=} opt_codepoint329 * @return {boolean}330 */331 eof(opt_codepoint) {332 const codepoint = opt_codepoint || this.code_;333 return codepoint === -1;334 }335 /** @return {!Token} */336 consumeAToken() {337 this.consumeComments();338 this.consume();339 const mark = new Token();340 mark.line = this.getLine();341 mark.col = this.getCol();342 if (whitespace(this.code_)) {343 // Merge consecutive whitespace into one token.344 while (whitespace(this.next())) {345 this.consume();346 }347 return mark.copyPosTo(new WhitespaceToken());348 } else if (this.code_ === /* '"' */ 0x22) {349 return mark.copyPosTo(this.consumeAStringToken());350 } else if (this.code_ === /* '#' */ 0x23) {351 if (nameChar(this.next()) ||352 this.areAValidEscape(this.next(1), this.next(2))) {353 let type = null;354 if (this.wouldStartAnIdentifier(355 this.next(1), this.next(2), this.next(3))) {356 type = 'id';357 }358 const token = new HashToken();359 token.value = this.consumeAName();360 if (type !== null) {361 token.type = type;362 }363 return mark.copyPosTo(token);364 } else {365 return mark.copyPosTo(new DelimToken(this.code_));366 }367 } else if (this.code_ === /* '$' */ 0x24) {368 if (this.next() === /* '=' */ 0x3d) {369 this.consume();370 return mark.copyPosTo(new SuffixMatchToken());371 } else {372 return mark.copyPosTo(new DelimToken(this.code_));373 }374 } else if (this.code_ === /* ''' */ 0x27) {375 return mark.copyPosTo(this.consumeAStringToken());376 } else if (this.code_ === /* '(' */ 0x28) {377 return mark.copyPosTo(new OpenParenToken());378 } else if (this.code_ === /* ')' */ 0x29) {379 return mark.copyPosTo(new CloseParenToken());380 } else if (this.code_ === /* '*' */ 0x2a) {381 if (this.next() === /* '=' */ 0x3d) {382 this.consume();383 return mark.copyPosTo(new SubstringMatchToken());384 } else {385 return mark.copyPosTo(new DelimToken(this.code_));386 }387 } else if (this.code_ === /* '+' */ 0x2b) {388 if (this./*OK*/ startsWithANumber()) {389 this.reconsume();390 return mark.copyPosTo(this.consumeANumericToken());391 } else {392 return mark.copyPosTo(new DelimToken(this.code_));393 }394 } else if (this.code_ === /* ',' */ 0x2c) {395 return mark.copyPosTo(new CommaToken());396 } else if (this.code_ === /* '-' */ 0x2d) {397 if (this./*OK*/ startsWithANumber()) {398 this.reconsume();399 return mark.copyPosTo(this.consumeANumericToken());400 } else if (401 this.next(1) === /* '-' */ 0x2d && this.next(2) === /* '>' */ 0x3e) {402 this.consume(2);403 return mark.copyPosTo(new CDCToken());404 } else if (this./*OK*/ startsWithAnIdentifier()) {405 this.reconsume();406 return mark.copyPosTo(this.consumeAnIdentlikeToken());407 } else {408 return mark.copyPosTo(new DelimToken(this.code_));409 }410 } else if (this.code_ === /* '.' */ 0x2e) {411 if (this./*OK*/ startsWithANumber()) {412 this.reconsume();413 return mark.copyPosTo(this.consumeANumericToken());414 } else {415 return mark.copyPosTo(new DelimToken(this.code_));416 }417 } else if (this.code_ === /* ':' */ 0x3a) {418 return mark.copyPosTo(new ColonToken());419 } else if (this.code_ === /* ';' */ 0x3b) {420 return mark.copyPosTo(new SemicolonToken());421 } else if (this.code_ === /* '<' */ 0x3c) {422 if (this.next(1) === /* '!' */ 0x21 && this.next(2) === /* '-' */ 0x2d &&423 this.next(3) === /* '-' */ 0x2d) {424 this.consume(3);425 return mark.copyPosTo(new CDOToken());426 } else {427 return mark.copyPosTo(new DelimToken(this.code_));428 }429 } else if (this.code_ === /* '@' */ 0x40) {430 if (this.wouldStartAnIdentifier(431 this.next(1), this.next(2), this.next(3))) {432 const token = new AtKeywordToken();433 token.value = this.consumeAName();434 return mark.copyPosTo(token);435 } else {436 return mark.copyPosTo(new DelimToken(this.code_));437 }438 } else if (this.code_ === /* '[' */ 0x5b) {439 return mark.copyPosTo(new OpenSquareToken());440 } else if (this.code_ === /* '\' */ 0x5c) {441 if (this./*OK*/ startsWithAValidEscape()) {442 this.reconsume();443 return mark.copyPosTo(this.consumeAnIdentlikeToken());444 } else {445 // This condition happens if we are in consumeAToken (this method),446 // the current codepoint is 0x5c (\) and the next codepoint is a447 // newline (\n).448 return mark.copyPosTo(new ErrorToken(449 ValidationError.Code.CSS_SYNTAX_STRAY_TRAILING_BACKSLASH,450 ['style']));451 }452 } else if (this.code_ === /* ']' */ 0x5d) {453 return mark.copyPosTo(new CloseSquareToken());454 } else if (this.code_ === /* '^' */ 0x5e) {455 if (this.next() === /* '=' */ 0x3d) {456 this.consume();457 return mark.copyPosTo(new PrefixMatchToken());458 } else {459 return mark.copyPosTo(new DelimToken(this.code_));460 }461 } else if (this.code_ === /* '{' */ 0x7b) {462 return mark.copyPosTo(new OpenCurlyToken());463 } else if (this.code_ === /* '|' */ 0x7c) {464 if (this.next() === /* '=' */ 0x3d) {465 this.consume();466 return mark.copyPosTo(new DashMatchToken());467 } else if (this.next() === /* '|' */ 0x7c) {468 this.consume();469 return mark.copyPosTo(new ColumnToken());470 } else {471 return mark.copyPosTo(new DelimToken(this.code_));472 }473 } else if (this.code_ === /* '}' */ 0x7d) {474 return mark.copyPosTo(new CloseCurlyToken());475 } else if (this.code_ === /* '~' */ 0x7e) {476 if (this.next() === /* '=' */ 0x3d) {477 this.consume();478 return mark.copyPosTo(new IncludeMatchToken());479 } else {480 return mark.copyPosTo(new DelimToken(this.code_));481 }482 } else if (digit(this.code_)) {483 this.reconsume();484 return mark.copyPosTo(this.consumeANumericToken());485 } else if (nameStartChar(this.code_)) {486 this.reconsume();487 return mark.copyPosTo(this.consumeAnIdentlikeToken());488 } else if (this.eof()) {489 return mark.copyPosTo(new EOFToken());490 } else {491 const token = new DelimToken(this.code_);492 return mark.copyPosTo(token);493 }494 }495 /**496 * Consume everything starting with /* and ending at * / (ignore the space),497 * emitting a parse error if we hit the end of the file. Returns nothing.498 */499 consumeComments() {500 const mark = new Token();501 mark.line = this.getLine();502 mark.col = this.getCol();503 while (this.next(1) === /* '/' */ 0x2f && this.next(2) === /* '*' */ 0x2a) {504 this.consume(2);505 while (true) {506 this.consume();507 if (this.code_ === /* '*' */ 0x2a && this.next() === /* '/' */ 0x2f) {508 this.consume();509 break;510 } else if (this.eof()) {511 // For example "h1 { color: red; } \* " would emit this parse error512 // at the end of the string.513 this.errors_.push(mark.copyPosTo(new ErrorToken(514 ValidationError.Code.CSS_SYNTAX_UNTERMINATED_COMMENT,515 ['style'])));516 return;517 }518 }519 }520 }521 /**522 * Consumes a token that starts with a number.523 * The specific type is one of:524 * NumberToken, DimensionToken, PercentageToken525 * @return {!Token}526 */527 consumeANumericToken() {528 asserts.assert(529 this.wouldStartANumber(this.next(1), this.next(2), this.next(3)),530 'Internal Error: consumeANumericToken precondition not met');531 /** @type {!NumberToken} */532 const num = this.consumeANumber();533 if (this.wouldStartAnIdentifier(this.next(1), this.next(2), this.next(3))) {534 const token = new DimensionToken();535 token.value = num.value;536 token.repr = num.repr;537 token.type = num.type;538 token.unit = this.consumeAName();539 return token;540 } else if (this.next() === /* '%' */ 0x25) {541 this.consume();542 const token = new PercentageToken();543 token.value = num.value;544 token.repr = num.repr;545 return token;546 }547 return num;548 }549 /**550 * Consume an identifier-like token.551 * The specific type is one of:552 * FunctionToken, URLToken, ErrorToken, IdentToken553 * @return {!Token}554 */555 consumeAnIdentlikeToken() {556 const name = this.consumeAName();557 if (name.toLowerCase() === 'url' && this.next() === /* '(' */ 0x28) {558 this.consume();559 while (whitespace(this.next(1)) && whitespace(this.next(2))) {560 this.consume();561 }562 if (this.next() === /* '"' */ 0x22 || this.next() === /* ''' */ 0x27) {563 const token = new FunctionToken();564 token.value = name;565 return token;566 } else if (567 whitespace(this.next()) &&568 (this.next(2) === /* '"' */ 0x22 ||569 this.next(2) === /* ''' */ 0x27)) {570 const token = new FunctionToken();571 token.value = name;572 return token;573 } else {574 return this.consumeAURLToken();575 }576 } else if (this.next() === /* '(' */ 0x28) {577 this.consume();578 const token = new FunctionToken();579 token.value = name;580 return token;581 } else {582 const token = new IdentToken();583 token.value = name;584 return token;585 }586 }587 /**588 * Consume a string token.589 * The specific type is one of:590 * StringToken, ErrorToken591 * @return {!Token}592 */593 consumeAStringToken() {594 asserts.assert(595 (this.code_ === /* '"' */ 0x22) || (this.code_ === /* ''' */ 0x27),596 'Internal Error: consumeAStringToken precondition not met');597 const endingCodePoint = this.code_;598 let string = '';599 while (true) {600 this.consume();601 if (this.code_ === endingCodePoint || this.eof()) {602 const token = new StringToken();603 token.value = string;604 return token;605 } else if (newline(this.code_)) {606 this.reconsume();607 return new ErrorToken(608 ValidationError.Code.CSS_SYNTAX_UNTERMINATED_STRING, ['style']);609 } else if (this.code_ === /* '\' */ 0x5c) {610 if (this.eof(this.next())) {611 continue;612 } else if (newline(this.next())) {613 this.consume();614 } else {615 string += stringFromCode(this.consumeEscape());616 }617 } else {618 string += stringFromCode(this.code_);619 }620 }621 }622 /**623 * Consume an URL token.624 * The specific type is one of:625 * URLToken, ErrorToken626 * @return {!Token}627 */628 consumeAURLToken() {629 const token = new URLToken();630 while (whitespace(this.next())) {631 this.consume();632 }633 if (this.eof(this.next())) {634 return token;635 }636 while (true) {637 this.consume();638 if (this.code_ === /* ')' */ 0x29 || this.eof()) {639 return token;640 } else if (whitespace(this.code_)) {641 while (whitespace(this.next())) {642 this.consume();643 }644 if (this.next() === /* ')' */ 0x29 || this.eof(this.next())) {645 this.consume();646 return token;647 } else {648 this.consumeTheRemnantsOfABadURL();649 return new ErrorToken(650 ValidationError.Code.CSS_SYNTAX_BAD_URL, ['style']);651 }652 } else if (653 this.code_ === /* '"' */ 0x22 || this.code_ === /* ''' */ 0x27 ||654 this.code_ === /* '(' */ 0x28 || nonPrintable(this.code_)) {655 this.consumeTheRemnantsOfABadURL();656 return new ErrorToken(657 ValidationError.Code.CSS_SYNTAX_BAD_URL, ['style']);658 } else if (this.code_ === /* '\' */ 0x5c) {659 if (this./*OK*/ startsWithAValidEscape()) {660 token.value += stringFromCode(this.consumeEscape());661 } else {662 this.consumeTheRemnantsOfABadURL();663 return new ErrorToken(664 ValidationError.Code.CSS_SYNTAX_BAD_URL, ['style']);665 }666 } else {667 token.value += stringFromCode(this.code_);668 }669 }670 }671 /**672 * Consume an escaped character, ex: \a212f3, followed by any whitespace.673 * Returns the numerical value of the character. If the codepoint following674 * the '\' character is not a hex code and not EOF, returns that codepoint.675 * @return {number}676 */677 consumeEscape() {678 // Assume the the current character is the \679 // and the next code point is not a newline.680 this.consume(); // '\'681 if (hexDigit(this.code_)) {682 // Consume 1-6 hex digits683 const digits = [this.code_];684 for (let total = 0; total < 5; total++) {685 if (hexDigit(this.next())) {686 this.consume();687 digits.push(this.code_);688 } else {689 break;690 }691 }692 if (whitespace(this.next())) {693 this.consume();694 }695 let value = parseInt(696 digits697 .map(function(x) {698 return String.fromCharCode(x);699 })700 .join(''),701 16);702 if (value > maxAllowedCodepoint) {703 value = 0xfffd;704 }705 return value;706 } else if (this.eof()) {707 return 0xfffd;708 } else {709 return this.code_;710 }711 }712 /**713 * Returns true if the codepoint sequence c1, c2 are the start714 * of an escape token.715 * @param {number} c1 codepoint at pos x716 * @param {number} c2 codepoint at pos x + 1717 * @return {boolean}718 */719 areAValidEscape(c1, c2) {720 if (c1 != /* '\' */ 0x5c) {721 return false;722 }723 if (newline(c2)) {724 return false;725 }726 return true;727 }728 /**729 * Returns true if the next two codepoints are the start of an escape token.730 * @return {boolean}731 */732 /*OK*/ startsWithAValidEscape() {733 return this.areAValidEscape(this.code_, this.next());734 }735 /**736 * Returns true if the codepoint sequence c1, c2, c3 are the737 * start of an identifier.738 * @param {number} c1 codepoint at pos x739 * @param {number} c2 codepoint at pos x + 1740 * @param {number} c3 codepoint at pos x + 2741 * @return {boolean}742 */743 wouldStartAnIdentifier(c1, c2, c3) {744 if (c1 === /* '-' */ 0x2d) {745 return nameStartChar(c2) || c2 === /* '-' */ 0x2d ||746 this.areAValidEscape(c2, c3);747 } else if (nameStartChar(c1)) {748 return true;749 } else if (c1 === /* '\' */ 0x5c) {750 return this.areAValidEscape(c1, c2);751 } else {752 return false;753 }754 }755 /**756 * Returns true if the next three codepoints are the start of an identifier.757 * @return {boolean}758 */759 /*OK*/ startsWithAnIdentifier() {760 return this.wouldStartAnIdentifier(this.code_, this.next(1), this.next(2));761 }762 /**763 * Returns true if the codepoint sequence c1, c2, c3 are the764 * start of a number.765 * @param {number} c1 codepoint at pos x766 * @param {number} c2 codepoint at pos x + 1767 * @param {number} c3 codepoint at pos x + 2768 * @return {boolean}769 */770 wouldStartANumber(c1, c2, c3) {771 if (c1 === /* '+' */ 0x2b || c1 === /* '-' */ 0x2d) {772 if (digit(c2)) {773 return true;774 }775 if (c2 === /* '.' */ 0x2e && digit(c3)) {776 return true;777 }778 return false;779 } else if (c1 === /* '.' */ 0x2e) {780 if (digit(c2)) {781 return true;782 }783 return false;784 } else if (digit(c1)) {785 return true;786 } else {787 return false;788 }789 }790 /**791 * Returns true if the next three codepoints are the start of a number.792 * @return {boolean}793 */794 /*OK*/ startsWithANumber() {795 return this.wouldStartANumber(this.code_, this.next(1), this.next(2));796 }797 /** @return {string} */798 consumeAName() {799 let result = '';800 while (true) {801 this.consume();802 if (nameChar(this.code_)) {803 result += stringFromCode(this.code_);804 } else if (this./*OK*/ startsWithAValidEscape()) {805 result += stringFromCode(this.consumeEscape());806 } else {807 this.reconsume();808 return result;809 }810 }811 }812 /**813 * Consumes a number, returning it as a string representation. Numbers814 * may include +/- prefixes, ./e/E delimiters, etc. The type string will815 * be either 'integer' or 'number'. A number may be an integer.816 * @return {!NumberToken}817 */818 consumeANumber() {819 asserts.assert(820 this.wouldStartANumber(this.next(1), this.next(2), this.next(3)),821 'Internal Error: consumeANumber precondition not met');822 /** @type {string} */823 let repr = '';824 /** @type {string} */825 let type = 'integer';826 if (this.next() === /* '+' */ 0x2b || this.next() === /* '-' */ 0x2d) {827 this.consume();828 repr += stringFromCode(this.code_); // + or -829 }830 while (digit(this.next())) {831 this.consume();832 repr += stringFromCode(this.code_); // 0-9833 }834 if (this.next(1) === /* '.' */ 0x2e && digit(this.next(2))) {835 this.consume();836 repr += stringFromCode(this.code_); // '.'837 type = 'number';838 while (digit(this.next())) {839 this.consume();840 repr += stringFromCode(this.code_); // 0-9841 }842 }843 const c1 = this.next(1);844 const c2 = this.next(2);845 const c3 = this.next(3);846 if ((c1 === /* 'E' */ 0x45 || c1 === /* 'e' */ 0x65) && digit(c2)) {847 this.consume();848 repr += stringFromCode(this.code_); // E or e849 type = 'number';850 while (digit(this.next())) {851 this.consume();852 repr += stringFromCode(this.code_); // 0-9853 }854 } else if (855 (c1 === /* 'E' */ 0x45 || c1 === /* 'e' */ 0x65) &&856 (c2 === /* '+' */ 0x2b || c2 === /* '-' */ 0x2d) && digit(c3)) {857 this.consume();858 repr += stringFromCode(this.code_); // E or e859 this.consume();860 repr += stringFromCode(this.code_); // + or -861 type = 'number';862 while (digit(this.next())) {863 this.consume();864 repr += stringFromCode(this.code_); // 0-9865 }866 }867 const numberToken = new NumberToken();868 numberToken.type = type;869 numberToken.value = this.convertAStringToANumber(repr);870 numberToken.repr = repr;871 return numberToken;872 }873 /**874 * Converts a numerical representation of a string to a number.875 * @param {string} string876 * @return {number}877 */878 convertAStringToANumber(string) {879 // CSS's number rules are identical to JS, afaik.880 return Number(string);881 }882 /**883 * Consumes ?. Returns nothing.884 */885 consumeTheRemnantsOfABadURL() {886 while (true) {887 this.consume();888 if (this.code_ === /* '-' */ 0x2d || this.eof()) {889 return;890 } else if (this./*OK*/ startsWithAValidEscape()) {891 this.consumeEscape();892 }893 }894 }895}896/**897 * NOTE: When adding to this enum, you must update TokenType_NamesById below.898 * @enum {number}899 */900const TokenType = {901 UNKNOWN: 0,902 AT_KEYWORD: 1,903 CDC: 2, // -->904 CDO: 3, // <!--905 CLOSE_CURLY: 4,906 CLOSE_PAREN: 5,907 CLOSE_SQUARE: 6,908 COLON: 7,909 COLUMN: 8, // ||910 COMMA: 9,911 DASH_MATCH: 10, // |=912 DELIM: 11,913 DIMENSION: 12,914 EOF_TOKEN: 13, // Can't call this EOF due to symbol conflict in C.915 ERROR: 14,916 FUNCTION_TOKEN: 15,917 HASH: 16, // #918 IDENT: 17,919 INCLUDE_MATCH: 18, // ~=920 NUMBER: 19,921 OPEN_CURLY: 20,922 OPEN_PAREN: 21,923 OPEN_SQUARE: 22,924 PERCENTAGE: 23,925 PREFIX_MATCH: 24, // ^=926 SEMICOLON: 25,927 STRING: 26,928 SUBSTRING_MATCH: 27, // *=929 SUFFIX_MATCH: 28, // $=930 WHITESPACE: 29,931 URL: 30,932 // AST nodes produced by the parsing routines.933 STYLESHEET: 31,934 AT_RULE: 32,935 QUALIFIED_RULE: 33,936 DECLARATION: 34,937 BLOCK: 35,938 FUNCTION: 36,939 // For ExtractUrls940 PARSED_CSS_URL: 37,941 // For css-selectors.js.942 TYPE_SELECTOR: 38,943 ID_SELECTOR: 39,944 ATTR_SELECTOR: 40,945 PSEUDO_SELECTOR: 41,946 CLASS_SELECTOR: 42,947 SIMPLE_SELECTOR_SEQUENCE: 43,948 COMBINATOR: 44,949 SELECTORS_GROUP: 45,950};951exports.TokenType = TokenType;952/** @type {!Array<string>} */953const TokenType_NamesById = [954 'UNKNOWN',955 'AT_KEYWORD',956 'CDC',957 'CDO',958 'CLOSE_CURLY',959 'CLOSE_PAREN',960 'CLOSE_SQUARE',961 'COLON',962 'COLUMN',963 'COMMA',964 'DASH_MATCH',965 'DELIM',966 'DIMENSION',967 'EOF_TOKEN',968 'ERROR',969 'FUNCTION_TOKEN',970 'HASH',971 'IDENT',972 'INCLUDE_MATCH',973 'NUMBER',974 'OPEN_CURLY',975 'OPEN_PAREN',976 'OPEN_SQUARE',977 'PERCENTAGE',978 'PREFIX_MATCH',979 'SEMICOLON',980 'STRING',981 'SUBSTRING_MATCH',982 'SUFFIX_MATCH',983 'WHITESPACE',984 'URL',985 'STYLESHEET',986 'AT_RULE',987 'QUALIFIED_RULE',988 'DECLARATION',989 'BLOCK',990 'FUNCTION',991 'PARSED_CSS_URL',992 'TYPE_SELECTOR',993 'ID_SELECTOR',994 'ATTR_SELECTOR',995 'PSEUDO_SELECTOR',996 'CLASS_SELECTOR',997 'SIMPLE_SELECTOR_SEQUENCE',998 'COMBINATOR',999 'SELECTORS_GROUP',1000];1001/**1002 * The abstract superclass for all tokens.1003 */1004const Token = class {1005 constructor() {1006 /** @type {number} */1007 this.line = 1;1008 /** @type {number} */1009 this.col = 0;1010 }1011 /**1012 * Copies the line / col values of |this| to |other|.1013 * @param {!T} other1014 * @return {!T}1015 * @template T1016 */1017 copyPosTo(other) {1018 other.line = this.line;1019 other.col = this.col;1020 return other;1021 }1022};1023exports.Token = Token;1024/** @type {!TokenType} */1025Token.prototype.tokenType = TokenType.UNKNOWN;1026/** @return {!Object} */1027Token.prototype.toJSON = function() {1028 return {1029 'tokenType': TokenType_NamesById[this.tokenType],1030 'line': this.line,1031 'col': this.col,1032 };1033};1034/**1035 * Error tokens carry an error code and parameters, which can be1036 * formatted into an error message via the format strings in1037 * validator.protoascii.1038 */1039const ErrorToken = class extends Token {1040 /**1041 * @param {!ValidationError.Code=} opt_code1042 * @param {!Array<string>=} opt_params1043 */1044 constructor(opt_code, opt_params) {1045 super();1046 asserts.assert(opt_code !== undefined);1047 asserts.assert(opt_params !== undefined);1048 /** @type {!ValidationError.Code} */1049 this.code = opt_code;1050 /** @type {!Array<string>} */1051 this.params = opt_params;1052 }1053};1054/** @type {!TokenType} */1055ErrorToken.prototype.tokenType = TokenType.ERROR;1056exports.ErrorToken = ErrorToken;1057/** @inheritDoc */1058ErrorToken.prototype.toJSON = function() {1059 const json = Token.prototype.toJSON.call(this);1060 json['code'] = this.code;1061 json['params'] = this.params;1062 return json;1063};1064const WhitespaceToken = class extends Token {};1065exports.WhitespaceToken = WhitespaceToken;1066/** @type {!TokenType} */1067WhitespaceToken.prototype.tokenType = TokenType.WHITESPACE;1068const CDOToken = class extends Token {};1069exports.CDOToken = CDOToken;1070/** @type {!TokenType} */1071CDOToken.prototype.tokenType = TokenType.CDO;1072const CDCToken = class extends Token {};1073exports.CDCToken = CDCToken;1074/** @type {!TokenType} */1075CDCToken.prototype.tokenType = TokenType.CDC;1076const ColonToken = class extends Token {};1077exports.ColonToken = ColonToken;1078/** @type {!TokenType} */1079ColonToken.prototype.tokenType = TokenType.COLON;1080const SemicolonToken = class extends Token {};1081exports.SemicolonToken = SemicolonToken;1082/** @type {!TokenType} */1083SemicolonToken.prototype.tokenType = TokenType.SEMICOLON;1084const CommaToken = class extends Token {};1085exports.CommaToken = CommaToken;1086/** @type {!TokenType} */1087CommaToken.prototype.tokenType = TokenType.COMMA;1088const GroupingToken = class extends Token {};1089exports.GroupingToken = GroupingToken;1090/** @type {string} */1091GroupingToken.prototype.value = 'abstract';1092/** @type {string} */1093GroupingToken.prototype.mirror = 'abstract';1094const OpenCurlyToken = class extends GroupingToken {};1095exports.OpenCurlyToken = OpenCurlyToken;1096/** @type {!TokenType} */1097OpenCurlyToken.prototype.tokenType = TokenType.OPEN_CURLY;1098/** @type {string} */1099OpenCurlyToken.prototype.value = '{';1100/** @type {string} */1101OpenCurlyToken.prototype.mirror = '}';1102const CloseCurlyToken = class extends GroupingToken {};1103exports.CloseCurlyToken = CloseCurlyToken;1104/** @type {!TokenType} */1105CloseCurlyToken.prototype.tokenType = TokenType.CLOSE_CURLY;1106/** @type {string} */1107CloseCurlyToken.prototype.value = '}';1108/** @type {string} */1109CloseCurlyToken.prototype.mirror = '{';1110const OpenSquareToken = class extends GroupingToken {};1111exports.OpenSquareToken = OpenSquareToken;1112/** @type {!TokenType} */1113OpenSquareToken.prototype.tokenType = TokenType.OPEN_SQUARE;1114/** @type {string} */1115OpenSquareToken.prototype.value = '[';1116/** @type {string} */1117OpenSquareToken.prototype.mirror = ']';1118const CloseSquareToken = class extends GroupingToken {};1119exports.CloseSquareToken = CloseSquareToken;1120/** @type {!TokenType} */1121CloseSquareToken.prototype.tokenType = TokenType.CLOSE_SQUARE;1122/** @type {string} */1123CloseSquareToken.prototype.value = ']';1124/** @type {string} */1125CloseSquareToken.prototype.mirror = '[';1126const OpenParenToken = class extends GroupingToken {};1127exports.OpenParenToken = OpenParenToken;1128/** @type {!TokenType} */1129OpenParenToken.prototype.tokenType = TokenType.OPEN_PAREN;1130/** @type {string} */1131OpenParenToken.prototype.value = '(';1132/** @type {string} */1133OpenParenToken.prototype.mirror = ')';1134const CloseParenToken = class extends GroupingToken {};1135exports.CloseParenToken = CloseParenToken;1136/** @type {!TokenType} */1137CloseParenToken.prototype.tokenType = TokenType.CLOSE_PAREN;1138/** @type {string} */1139CloseParenToken.prototype.value = ')';1140/** @type {string} */1141CloseParenToken.prototype.mirror = '(';1142const IncludeMatchToken = class extends Token {};1143exports.IncludeMatchToken = IncludeMatchToken;1144/** @type {!TokenType} */1145IncludeMatchToken.prototype.tokenType = TokenType.INCLUDE_MATCH;1146const DashMatchToken = class extends Token {};1147exports.DashMatchToken = DashMatchToken;1148/** @type {!TokenType} */1149DashMatchToken.prototype.tokenType = TokenType.DASH_MATCH;1150const PrefixMatchToken = class extends Token {};1151exports.PrefixMatchToken = PrefixMatchToken;1152/** @type {!TokenType} */1153PrefixMatchToken.prototype.tokenType = TokenType.PREFIX_MATCH;1154const SuffixMatchToken = class extends Token {};1155exports.SuffixMatchToken = SuffixMatchToken;1156/** @type {!TokenType} */1157SuffixMatchToken.prototype.tokenType = TokenType.SUFFIX_MATCH;1158const SubstringMatchToken = class extends Token {};1159exports.SubstringMatchToken = SubstringMatchToken;1160/** @type {!TokenType} */1161SubstringMatchToken.prototype.tokenType = TokenType.SUBSTRING_MATCH;1162const ColumnToken = class extends Token {};1163exports.ColumnToken = ColumnToken;1164/** @type {!TokenType} */1165ColumnToken.prototype.tokenType = TokenType.COLUMN;1166const EOFToken = class extends Token {};1167exports.EOFToken = EOFToken;1168/** @type {!TokenType} */1169EOFToken.prototype.tokenType = TokenType.EOF_TOKEN;1170const DelimToken = class extends Token {1171 /**1172 * @param {number} code1173 */1174 constructor(code) {1175 super();1176 /** @type {string} */1177 this.value = stringFromCode(code);1178 }1179};1180exports.DelimToken = DelimToken;1181/** @type {!TokenType} */1182DelimToken.prototype.tokenType = TokenType.DELIM;1183/** @inheritDoc */1184DelimToken.prototype.toJSON = function() {1185 const json = Token.prototype.toJSON.call(this);1186 json['value'] = this.value;1187 return json;1188};1189const StringValuedToken = class extends Token {1190 constructor() {1191 super();...

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css-syntax.js

Source:css-syntax.js Github

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...73 codepoints.push(code);74 }75 return codepoints;76}77function stringFromCode(code) {78 if(code <= 0xffff) return String.fromCharCode(code);79 // Otherwise, encode astral char as surrogate pair.80 code -= Math.pow(2, 21);81 var lead = Math.floor(code/Math.pow(2, 10)) + 0xd800;82 var trail = code % Math.pow(2, 10); + 0xdc00;83 return String.fromCharCode(lead) + String.fromCharCode(trail);84}85function tokenize(str) {86 str = preprocess(str);87 var i = -1;88 var tokens = new TokenList();89 var code;90 // Line number information.91 var line = 0;92 var column = 0;93 // The only use of lastLineLength is in reconsume().94 var lastLineLength = 0;95 var incrLineno = function() {96 line += 1;97 lastLineLength = column;98 column = 0;99 };100 var locStart = {line:line, column:column};101 var codepoint = function(i) {102 if(i >= str.length) {103 return -1;104 }105 return str[i];106 }107 var next = function(num) {108 if(num === undefined) { num = 1; }109 if(num > 3) { throw "Spec Error: no more than three codepoints of lookahead."; }110 return codepoint(i+num);111 };112 var consume = function(num) {113 if(num === undefined)114 num = 1;115 i += num;116 code = codepoint(i);117 if(newline(code)) incrLineno();118 else column += num;119 //console.log('Consume '+i+' '+String.fromCharCode(code) + ' 0x' + code.toString(16));120 return true;121 };122 var reconsume = function() {123 i -= 1;124 if (newline(code)) {125 line -= 1;126 column = lastLineLength;127 } else {128 column -= 1;129 }130 locStart.line = line;131 locStart.column = column;132 return true;133 };134 var eof = function(codepoint) {135 if(codepoint === undefined) codepoint = code;136 return codepoint == -1;137 };138 var donothing = function() {};139 var tokenizeerror = function() { console.log("Parse error at index " + i + ", processing codepoint 0x" + code.toString(16) + ".");return true; };140 var consumeAToken = function() {141 consumeComments();142 consume();143 if(whitespace(code)) {144 while(whitespace(next())) consume();145 return new WhitespaceToken;146 }147 else if(code == 0x22) return consumeAStringToken();148 else if(code == 0x23) {149 if(namechar(next()) || areAValidEscape(next(1), next(2))) {150 var token = new HashToken();151 if(wouldStartAnIdentifier(next(1), next(2), next(3))) token.type = "id";152 token.value = consumeAName();153 return token;154 } else {155 return new DelimToken(code);156 }157 }158 else if(code == 0x24) {159 if(next() == 0x3d) {160 consume();161 return new SuffixMatchToken();162 } else {163 return new DelimToken(code);164 }165 }166 else if(code == 0x27) return consumeAStringToken();167 else if(code == 0x28) return new OpenParenToken();168 else if(code == 0x29) return new CloseParenToken();169 else if(code == 0x2a) {170 if(next() == 0x3d) {171 consume();172 return new SubstringMatchToken();173 } else {174 return new DelimToken(code);175 }176 }177 else if(code == 0x2b) {178 if(startsWithANumber()) {179 reconsume();180 return consumeANumericToken();181 } else {182 return new DelimToken(code);183 }184 }185 else if(code == 0x2c) return new CommaToken();186 else if(code == 0x2d) {187 if(startsWithANumber()) {188 reconsume();189 return consumeANumericToken();190 } else if(next(1) == 0x2d && next(2) == 0x3e) {191 consume(2);192 return new CDCToken();193 } else if(startsWithAnIdentifier()) {194 reconsume();195 return consumeAnIdentlikeToken();196 } else {197 return new DelimToken(code);198 }199 }200 else if(code == 0x2e) {201 if(startsWithANumber()) {202 reconsume();203 return consumeANumericToken();204 } else {205 return new DelimToken(code);206 }207 }208 else if(code == 0x3a) return new ColonToken;209 else if(code == 0x3b) return new SemicolonToken;210 else if(code == 0x3c) {211 if(next(1) == 0x21 && next(2) == 0x2d && next(3) == 0x2d) {212 consume(3);213 return new CDOToken();214 } else {215 return new DelimToken(code);216 }217 }218 else if(code == 0x40) {219 if(wouldStartAnIdentifier(next(1), next(2), next(3))) {220 return new AtKeywordToken(consumeAName());221 } else {222 return new DelimToken(code);223 }224 }225 else if(code == 0x5b) return new OpenSquareToken();226 else if(code == 0x5c) {227 if(startsWithAValidEscape()) {228 reconsume();229 return consumeAnIdentlikeToken();230 } else {231 tokenizeerror();232 return new DelimToken(code);233 }234 }235 else if(code == 0x5d) return new CloseSquareToken();236 else if(code == 0x5e) {237 if(next() == 0x3d) {238 consume();239 return new PrefixMatchToken();240 } else {241 return new DelimToken(code);242 }243 }244 else if(code == 0x7b) return new OpenCurlyToken();245 else if(code == 0x7c) {246 if(next() == 0x3d) {247 consume();248 return new DashMatchToken();249 } else if(next() == 0x7c) {250 consume();251 return new ColumnToken();252 } else {253 return new DelimToken(code);254 }255 }256 else if(code == 0x7d) return new CloseCurlyToken();257 else if(code == 0x7e) {258 if(next() == 0x3d) {259 consume();260 return new IncludeMatchToken();261 } else {262 return new DelimToken(code);263 }264 }265 else if(digit(code)) {266 reconsume();267 return consumeANumericToken();268 }269 else if(namestartchar(code)) {270 reconsume();271 return consumeAnIdentlikeToken();272 }273 else if(eof()) return new EOFToken();274 else return new DelimToken(code);275 };276 var consumeComments = function() {277 while(next(1) == 0x2f && next(2) == 0x2a) {278 consume(2);279 while(true) {280 consume();281 if(code == 0x2a && next() == 0x2f) {282 consume();283 break;284 } else if(eof()) {285 tokenizeerror();286 return;287 }288 }289 }290 };291 var consumeANumericToken = function() {292 var num = consumeANumber();293 if(wouldStartAnIdentifier(next(1), next(2), next(3))) {294 var token = new DimensionToken();295 token.value = num.value;296 token.repr = num.repr;297 token.type = num.type;298 token.unit = consumeAName();299 return token;300 } else if(next() == 0x25) {301 consume();302 var token = new PercentageToken();303 token.value = num.value;304 token.repr = num.repr;305 return token;306 } else {307 var token = new NumberToken();308 token.value = num.value;309 token.repr = num.repr;310 token.type = num.type;311 return token;312 }313 };314 var consumeAnIdentlikeToken = function() {315 var str = consumeAName();316 if(str.toLowerCase() == "url" && next() == 0x28) {317 consume();318 while(whitespace(next(1)) && whitespace(next(2))) consume();319 if(next() == 0x22 || next() == 0x27) {320 return new FunctionToken(str);321 } else if(whitespace(next()) && (next(2) == 0x22 || next(2) == 0x27)) {322 return new FunctionToken(str);323 } else {324 return consumeAURLToken();325 }326 } else if(next() == 0x28) {327 consume();328 return new FunctionToken(str);329 } else {330 return new IdentifierToken(str);331 }332 };333 var consumeAStringToken = function(endingCodePoint) {334 if(endingCodePoint === undefined) endingCodePoint = code;335 var string = "";336 while(consume()) {337 if(code == endingCodePoint || eof()) {338 return new StringToken(string);339 } else if(newline(code)) {340 tokenizeerror();341 reconsume();342 return new BadStringToken();343 } else if(code == 0x5c) {344 if(eof(next())) {345 donothing();346 } else if(newline(next())) {347 consume();348 } else {349 string += stringFromCode(consumeEscape())350 }351 } else {352 string += stringFromCode(code);353 }354 }355 };356 var consumeAURLToken = function() {357 var token = new URLToken("");358 while(whitespace(next())) consume();359 if(eof(next())) return token;360 while(consume()) {361 if(code == 0x29 || eof()) {362 return token;363 } else if(whitespace(code)) {364 while(whitespace(next())) consume();365 if(next() == 0x29 || eof(next())) {366 consume();367 return token;368 } else {369 consumeTheRemnantsOfABadURL();370 return new BadURLToken();371 }372 } else if(code == 0x22 || code == 0x27 || code == 0x28 || nonprintable(code)) {373 tokenizeerror();374 consumeTheRemnantsOfABadURL();375 return new BadURLToken();376 } else if(code == 0x5c) {377 if(startsWithAValidEscape()) {378 token.value += stringFromCode(consumeEscape());379 } else {380 tokenizeerror();381 consumeTheRemnantsOfABadURL();382 return new BadURLToken();383 }384 } else {385 token.value += stringFromCode(code);386 }387 }388 };389 var consumeEscape = function() {390 // Assume the the current character is the \391 // and the next code point is not a newline.392 consume();393 if(hexdigit(code)) {394 // Consume 1-6 hex digits395 var digits = [code];396 for(var total = 0; total < 5; total++) {397 if(hexdigit(next())) {398 consume();399 digits.push(code);400 } else {401 break;402 }403 }404 if(whitespace(next())) consume();405 var value = parseInt(digits.map(function(x){return String.fromCharCode(x);}).join(''), 16);406 if( value > maximumallowedcodepoint ) value = 0xfffd;407 return value;408 } else if(eof()) {409 return 0xfffd;410 } else {411 return code;412 }413 };414 var areAValidEscape = function(c1, c2) {415 if(c1 != 0x5c) return false;416 if(newline(c2)) return false;417 return true;418 };419 var startsWithAValidEscape = function() {420 return areAValidEscape(code, next());421 };422 var wouldStartAnIdentifier = function(c1, c2, c3) {423 if(c1 == 0x2d) {424 return namestartchar(c2) || c2 == 0x2d || areAValidEscape(c2, c3);425 } else if(namestartchar(c1)) {426 return true;427 } else if(c1 == 0x5c) {428 return areAValidEscape(c1, c2);429 } else {430 return false;431 }432 };433 var startsWithAnIdentifier = function() {434 return wouldStartAnIdentifier(code, next(1), next(2));435 };436 var wouldStartANumber = function(c1, c2, c3) {437 if(c1 == 0x2b || c1 == 0x2d) {438 if(digit(c2)) return true;439 if(c2 == 0x2e && digit(c3)) return true;440 return false;441 } else if(c1 == 0x2e) {442 if(digit(c2)) return true;443 return false;444 } else if(digit(c1)) {445 return true;446 } else {447 return false;448 }449 };450 var startsWithANumber = function() {451 return wouldStartANumber(code, next(1), next(2));452 };453 var consumeAName = function() {454 var result = "";455 while(consume()) {456 if(namechar(code)) {457 result += stringFromCode(code);458 } else if(startsWithAValidEscape()) {459 result += stringFromCode(consumeEscape());460 } else {461 reconsume();462 return result;463 }464 }465 };466 var consumeANumber = function() {467 var repr = '';468 var type = "integer";469 if(next() == 0x2b || next() == 0x2d) {470 consume();471 repr += stringFromCode(code);472 }473 while(digit(next())) {474 consume();475 repr += stringFromCode(code);476 }477 if(next(1) == 0x2e && digit(next(2))) {478 consume();479 repr += stringFromCode(code);480 consume();481 repr += stringFromCode(code);482 type = "number";483 while(digit(next())) {484 consume();485 repr += stringFromCode(code);486 }487 }488 var c1 = next(1), c2 = next(2), c3 = next(3);489 if((c1 == 0x45 || c1 == 0x65) && digit(c2)) {490 consume();491 repr += stringFromCode(code);492 consume();493 repr += stringFromCode(code);494 type = "number";495 while(digit(next())) {496 consume();497 repr += stringFromCode(code);498 }499 } else if((c1 == 0x45 || c1 == 0x65) && (c2 == 0x2b || c2 == 0x2d) && digit(c3)) {500 consume();501 repr += stringFromCode(code);502 consume();503 repr += stringFromCode(code);504 consume();505 repr += stringFromCode(code);506 type = "number";507 while(digit(next())) {508 consume();509 repr += stringFromCode(code);510 }511 }512 var value = convertAStringToANumber(repr);513 return {type:type, value:value, repr:repr};514 };515 var convertAStringToANumber = function(string) {516 // CSS's number rules are identical to JS, afaik.517 return +string;518 };519 var consumeTheRemnantsOfABadURL = function() {520 while(consume()) {521 if(code == 0x2d || eof()) {522 return;523 } else if(startsWithAValidEscape()) {524 consumeEscape();525 donothing();526 } else {527 donothing();528 }529 }530 };531 var iterationCount = 0;532 while(!eof(next())) {533 tokens.push(consumeAToken());534 if(iterationCount++ > str.length*2) throw new Error("The CSS Tokenizer is infinite-looping");535 }536 return tokens;537}538function CSSParserToken() { return this; }539CSSParserToken.prototype.toJSON = function() {540 return {token: this.tokenType};541}542CSSParserToken.prototype.toString = function() { return this.tokenType; }543CSSParserToken.prototype.toCSSString = function() { return ''+this; }544function BadStringToken() { return this; }545BadStringToken.prototype = new CSSParserToken;546BadStringToken.prototype.tokenType = "BADSTRING";547BadStringToken.prototype.toCSSString = function() { return "'"; }548function BadURLToken() { return this; }549BadURLToken.prototype = new CSSParserToken;550BadURLToken.prototype.tokenType = "BADURL";551BadURLToken.prototype.toCSSString = function() { return "url("; }552function WhitespaceToken() { return this; }553WhitespaceToken.prototype = new CSSParserToken;554WhitespaceToken.prototype.tokenType = "WHITESPACE";555WhitespaceToken.prototype.toString = function() { return "WS"; }556WhitespaceToken.prototype.toCSSString = function() { return " "; }557function CDOToken() { return this; }558CDOToken.prototype = new CSSParserToken;559CDOToken.prototype.tokenType = "CDO";560CDOToken.prototype.toCSSString = function() { return "<!--"; }561function CDCToken() { return this; }562CDCToken.prototype = new CSSParserToken;563CDCToken.prototype.tokenType = "CDC";564CDCToken.prototype.toCSSString = function() { return "-->"; }565function ColonToken() { return this; }566ColonToken.prototype = new CSSParserToken;567ColonToken.prototype.tokenType = ":";568function SemicolonToken() { return this; }569SemicolonToken.prototype = new CSSParserToken;570SemicolonToken.prototype.tokenType = ";";571function CommaToken() { return this; }572CommaToken.prototype = new CSSParserToken;573CommaToken.prototype.tokenType = ",";574CommaToken.prototype.value = ";"; // backwards-compat with DELIM token575function GroupingToken() { return this; }576GroupingToken.prototype = new CSSParserToken;577function OpenCurlyToken() { this.value = "{"; this.mirror = "}"; return this; }578OpenCurlyToken.prototype = new GroupingToken;579OpenCurlyToken.prototype.tokenType = "{";580function CloseCurlyToken() { this.value = "}"; this.mirror = "{"; return this; }581CloseCurlyToken.prototype = new GroupingToken;582CloseCurlyToken.prototype.tokenType = "}";583function OpenSquareToken() { this.value = "["; this.mirror = "]"; return this; }584OpenSquareToken.prototype = new GroupingToken;585OpenSquareToken.prototype.tokenType = "[";586function CloseSquareToken() { this.value = "]"; this.mirror = "["; return this; }587CloseSquareToken.prototype = new GroupingToken;588CloseSquareToken.prototype.tokenType = "]";589function OpenParenToken() { this.value = "("; this.mirror = ")"; return this; }590OpenParenToken.prototype = new GroupingToken;591OpenParenToken.prototype.tokenType = "(";592function CloseParenToken() { this.value = ")"; this.mirror = "("; return this; }593CloseParenToken.prototype = new GroupingToken;594CloseParenToken.prototype.tokenType = ")";595function IncludeMatchToken() { return this; }596IncludeMatchToken.prototype = new CSSParserToken;597IncludeMatchToken.prototype.tokenType = "~=";598function DashMatchToken() { return this; }599DashMatchToken.prototype = new CSSParserToken;600DashMatchToken.prototype.tokenType = "|=";601function PrefixMatchToken() { return this; }602PrefixMatchToken.prototype = new CSSParserToken;603PrefixMatchToken.prototype.tokenType = "^=";604function SuffixMatchToken() { return this; }605SuffixMatchToken.prototype = new CSSParserToken;606SuffixMatchToken.prototype.tokenType = "$=";607function SubstringMatchToken() { return this; }608SubstringMatchToken.prototype = new CSSParserToken;609SubstringMatchToken.prototype.tokenType = "*=";610function ColumnToken() { return this; }611ColumnToken.prototype = new CSSParserToken;612ColumnToken.prototype.tokenType = "||";613function EOFToken() { return this; }614EOFToken.prototype = new CSSParserToken;615EOFToken.prototype.tokenType = "EOF";616EOFToken.prototype.toCSSString = function() { return ""; }617function DelimToken(code) {618 this.value = stringFromCode(code);619 return this;620}621DelimToken.prototype = new CSSParserToken;622DelimToken.prototype.tokenType = "DELIM";623DelimToken.prototype.toString = function() { return "DELIM("+this.value+")"; }624DelimToken.prototype.toCSSString = function() {625 return (this.value == "\\") ? "\\\n" : this.value;626}627function StringValuedToken() { return this; }628StringValuedToken.prototype = new CSSParserToken;629StringValuedToken.prototype.ASCIIMatch = function(str) {630 return this.value.toLowerCase() == str.toLowerCase();631}632function IdentifierToken(val) {...

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cssTokenizer.js

Source:cssTokenizer.js Github

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...71 codepoints.push(code);72 }73 return codepoints;74}75function stringFromCode(code) {76 if(code <= 0xffff) return String.fromCharCode(code);77 // Otherwise, encode astral char as surrogate pair.78 code -= Math.pow(2, 16);79 var lead = Math.floor(code/Math.pow(2, 10)) + 0xd800;80 var trail = code % Math.pow(2, 10) + 0xdc00;81 return String.fromCharCode(lead) + String.fromCharCode(trail);82}83function tokenize(str) {84 str = preprocess(str);85 var i = -1;86 var tokens = [];87 var code;88 // Line number information.89 var line = 0;90 var column = 0;91 // The only use of lastLineLength is in reconsume().92 var lastLineLength = 0;93 var incrLineno = function() {94 line += 1;95 lastLineLength = column;96 column = 0;97 };98 var locStart = {line:line, column:column};99 var codepoint = function(i) {100 if(i >= str.length) {101 return -1;102 }103 return str[i];104 }105 var next = function(num) {106 if(num === undefined)107 num = 1;108 if(num > 3)109 throw "Spec Error: no more than three codepoints of lookahead.";110 return codepoint(i+num);111 };112 var consume = function(num) {113 if(num === undefined)114 num = 1;115 i += num;116 code = codepoint(i);117 if(newline(code)) incrLineno();118 else column += num;119 //console.log('Consume '+i+' '+String.fromCharCode(code) + ' 0x' + code.toString(16));120 return true;121 };122 var reconsume = function() {123 i -= 1;124 if (newline(code)) {125 line -= 1;126 column = lastLineLength;127 } else {128 column -= 1;129 }130 locStart.line = line;131 locStart.column = column;132 return true;133 };134 var eof = function(codepoint) {135 if(codepoint === undefined) codepoint = code;136 return codepoint == -1;137 };138 var donothing = function() {};139 var parseerror = function() { console.log("Parse error at index " + i + ", processing codepoint 0x" + code.toString(16) + ".");return true; };140 var consumeAToken = function() {141 consumeComments();142 consume();143 if(whitespace(code)) {144 while(whitespace(next())) consume();145 return new WhitespaceToken;146 }147 else if(code == 0x22) return consumeAStringToken();148 else if(code == 0x23) {149 if(namechar(next()) || areAValidEscape(next(1), next(2))) {150 var token = new HashToken();151 if(wouldStartAnIdentifier(next(1), next(2), next(3))) token.type = "id";152 token.value = consumeAName();153 return token;154 } else {155 return new DelimToken(code);156 }157 }158 else if(code == 0x24) {159 if(next() == 0x3d) {160 consume();161 return new SuffixMatchToken();162 } else {163 return new DelimToken(code);164 }165 }166 else if(code == 0x27) return consumeAStringToken();167 else if(code == 0x28) return new OpenParenToken();168 else if(code == 0x29) return new CloseParenToken();169 else if(code == 0x2a) {170 if(next() == 0x3d) {171 consume();172 return new SubstringMatchToken();173 } else {174 return new DelimToken(code);175 }176 }177 else if(code == 0x2b) {178 if(startsWithANumber()) {179 reconsume();180 return consumeANumericToken();181 } else {182 return new DelimToken(code);183 }184 }185 else if(code == 0x2c) return new CommaToken();186 else if(code == 0x2d) {187 if(startsWithANumber()) {188 reconsume();189 return consumeANumericToken();190 } else if(next(1) == 0x2d && next(2) == 0x3e) {191 consume(2);192 return new CDCToken();193 } else if(startsWithAnIdentifier()) {194 reconsume();195 return consumeAnIdentlikeToken();196 } else {197 return new DelimToken(code);198 }199 }200 else if(code == 0x2e) {201 if(startsWithANumber()) {202 reconsume();203 return consumeANumericToken();204 } else {205 return new DelimToken(code);206 }207 }208 else if(code == 0x3a) return new ColonToken;209 else if(code == 0x3b) return new SemicolonToken;210 else if(code == 0x3c) {211 if(next(1) == 0x21 && next(2) == 0x2d && next(3) == 0x2d) {212 consume(3);213 return new CDOToken();214 } else {215 return new DelimToken(code);216 }217 }218 else if(code == 0x40) {219 if(wouldStartAnIdentifier(next(1), next(2), next(3))) {220 return new AtKeywordToken(consumeAName());221 } else {222 return new DelimToken(code);223 }224 }225 else if(code == 0x5b) return new OpenSquareToken();226 else if(code == 0x5c) {227 if(startsWithAValidEscape()) {228 reconsume();229 return consumeAnIdentlikeToken();230 } else {231 parseerror();232 return new DelimToken(code);233 }234 }235 else if(code == 0x5d) return new CloseSquareToken();236 else if(code == 0x5e) {237 if(next() == 0x3d) {238 consume();239 return new PrefixMatchToken();240 } else {241 return new DelimToken(code);242 }243 }244 else if(code == 0x7b) return new OpenCurlyToken();245 else if(code == 0x7c) {246 if(next() == 0x3d) {247 consume();248 return new DashMatchToken();249 } else if(next() == 0x7c) {250 consume();251 return new ColumnToken();252 } else {253 return new DelimToken(code);254 }255 }256 else if(code == 0x7d) return new CloseCurlyToken();257 else if(code == 0x7e) {258 if(next() == 0x3d) {259 consume();260 return new IncludeMatchToken();261 } else {262 return new DelimToken(code);263 }264 }265 else if(digit(code)) {266 reconsume();267 return consumeANumericToken();268 }269 else if(namestartchar(code)) {270 reconsume();271 return consumeAnIdentlikeToken();272 }273 else if(eof()) return new EOFToken();274 else return new DelimToken(code);275 };276 var consumeComments = function() {277 while(next(1) == 0x2f && next(2) == 0x2a) {278 consume(2);279 while(true) {280 consume();281 if(code == 0x2a && next() == 0x2f) {282 consume();283 break;284 } else if(eof()) {285 parseerror();286 return;287 }288 }289 }290 };291 var consumeANumericToken = function() {292 var num = consumeANumber();293 if(wouldStartAnIdentifier(next(1), next(2), next(3))) {294 var token = new DimensionToken();295 token.value = num.value;296 token.repr = num.repr;297 token.type = num.type;298 token.unit = consumeAName();299 return token;300 } else if(next() == 0x25) {301 consume();302 var token = new PercentageToken();303 token.value = num.value;304 token.repr = num.repr;305 return token;306 } else {307 var token = new NumberToken();308 token.value = num.value;309 token.repr = num.repr;310 token.type = num.type;311 return token;312 }313 };314 var consumeAnIdentlikeToken = function() {315 var str = consumeAName();316 if(str.toLowerCase() == "url" && next() == 0x28) {317 consume();318 while(whitespace(next(1)) && whitespace(next(2))) consume();319 if(next() == 0x22 || next() == 0x27) {320 return new FunctionToken(str);321 } else if(whitespace(next()) && (next(2) == 0x22 || next(2) == 0x27)) {322 return new FunctionToken(str);323 } else {324 return consumeAURLToken();325 }326 } else if(next() == 0x28) {327 consume();328 return new FunctionToken(str);329 } else {330 return new IdentToken(str);331 }332 };333 var consumeAStringToken = function(endingCodePoint) {334 if(endingCodePoint === undefined) endingCodePoint = code;335 var string = "";336 while(consume()) {337 if(code == endingCodePoint || eof()) {338 return new StringToken(string);339 } else if(newline(code)) {340 parseerror();341 reconsume();342 return new BadStringToken();343 } else if(code == 0x5c) {344 if(eof(next())) {345 donothing();346 } else if(newline(next())) {347 consume();348 } else {349 string += stringFromCode(consumeEscape())350 }351 } else {352 string += stringFromCode(code);353 }354 }355 };356 var consumeAURLToken = function() {357 var token = new URLToken("");358 while(whitespace(next())) consume();359 if(eof(next())) return token;360 while(consume()) {361 if(code == 0x29 || eof()) {362 return token;363 } else if(whitespace(code)) {364 while(whitespace(next())) consume();365 if(next() == 0x29 || eof(next())) {366 consume();367 return token;368 } else {369 consumeTheRemnantsOfABadURL();370 return new BadURLToken();371 }372 } else if(code == 0x22 || code == 0x27 || code == 0x28 || nonprintable(code)) {373 parseerror();374 consumeTheRemnantsOfABadURL();375 return new BadURLToken();376 } else if(code == 0x5c) {377 if(startsWithAValidEscape()) {378 token.value += stringFromCode(consumeEscape());379 } else {380 parseerror();381 consumeTheRemnantsOfABadURL();382 return new BadURLToken();383 }384 } else {385 token.value += stringFromCode(code);386 }387 }388 };389 var consumeEscape = function() {390 // Assume the the current character is the \391 // and the next code point is not a newline.392 consume();393 if(hexdigit(code)) {394 // Consume 1-6 hex digits395 var digits = [code];396 for(var total = 0; total < 5; total++) {397 if(hexdigit(next())) {398 consume();399 digits.push(code);400 } else {401 break;402 }403 }404 if(whitespace(next())) consume();405 var value = parseInt(digits.map(function(x){return String.fromCharCode(x);}).join(''), 16);406 if( value > maximumallowedcodepoint ) value = 0xfffd;407 return value;408 } else if(eof()) {409 return 0xfffd;410 } else {411 return code;412 }413 };414 var areAValidEscape = function(c1, c2) {415 if(c1 != 0x5c) return false;416 if(newline(c2)) return false;417 return true;418 };419 var startsWithAValidEscape = function() {420 return areAValidEscape(code, next());421 };422 var wouldStartAnIdentifier = function(c1, c2, c3) {423 if(c1 == 0x2d) {424 return namestartchar(c2) || c2 == 0x2d || areAValidEscape(c2, c3);425 } else if(namestartchar(c1)) {426 return true;427 } else if(c1 == 0x5c) {428 return areAValidEscape(c1, c2);429 } else {430 return false;431 }432 };433 var startsWithAnIdentifier = function() {434 return wouldStartAnIdentifier(code, next(1), next(2));435 };436 var wouldStartANumber = function(c1, c2, c3) {437 if(c1 == 0x2b || c1 == 0x2d) {438 if(digit(c2)) return true;439 if(c2 == 0x2e && digit(c3)) return true;440 return false;441 } else if(c1 == 0x2e) {442 if(digit(c2)) return true;443 return false;444 } else if(digit(c1)) {445 return true;446 } else {447 return false;448 }449 };450 var startsWithANumber = function() {451 return wouldStartANumber(code, next(1), next(2));452 };453 var consumeAName = function() {454 var result = "";455 while(consume()) {456 if(namechar(code)) {457 result += stringFromCode(code);458 } else if(startsWithAValidEscape()) {459 result += stringFromCode(consumeEscape());460 } else {461 reconsume();462 return result;463 }464 }465 };466 var consumeANumber = function() {467 var repr = [];468 var type = "integer";469 if(next() == 0x2b || next() == 0x2d) {470 consume();471 repr += stringFromCode(code);472 }473 while(digit(next())) {474 consume();475 repr += stringFromCode(code);476 }477 if(next(1) == 0x2e && digit(next(2))) {478 consume();479 repr += stringFromCode(code);480 consume();481 repr += stringFromCode(code);482 type = "number";483 while(digit(next())) {484 consume();485 repr += stringFromCode(code);486 }487 }488 var c1 = next(1), c2 = next(2), c3 = next(3);489 if((c1 == 0x45 || c1 == 0x65) && digit(c2)) {490 consume();491 repr += stringFromCode(code);492 consume();493 repr += stringFromCode(code);494 type = "number";495 while(digit(next())) {496 consume();497 repr += stringFromCode(code);498 }499 } else if((c1 == 0x45 || c1 == 0x65) && (c2 == 0x2b || c2 == 0x2d) && digit(c3)) {500 consume();501 repr += stringFromCode(code);502 consume();503 repr += stringFromCode(code);504 consume();505 repr += stringFromCode(code);506 type = "number";507 while(digit(next())) {508 consume();509 repr += stringFromCode(code);510 }511 }512 var value = convertAStringToANumber(repr);513 return {type:type, value:value, repr:repr};514 };515 var convertAStringToANumber = function(string) {516 // CSS's number rules are identical to JS, afaik.517 return +string;518 };519 var consumeTheRemnantsOfABadURL = function() {520 while(consume()) {521 if(code == 0x29 || eof()) {522 return;523 } else if(startsWithAValidEscape()) {524 consumeEscape();525 donothing();526 } else {527 donothing();528 }529 }530 };531 var iterationCount = 0;532 while(!eof(next())) {533 tokens.push(consumeAToken());534 iterationCount++;535 if(iterationCount > str.length*2) return "I'm infinite-looping!";536 }537 return tokens;538}539function CSSParserToken() { throw "Abstract Base Class"; }540CSSParserToken.prototype.toJSON = function() {541 return {token: this.tokenType};542}543CSSParserToken.prototype.toString = function() { return this.tokenType; }544CSSParserToken.prototype.toSource = function() { return ''+this; }545function BadStringToken() { return this; }546BadStringToken.prototype = Object.create(CSSParserToken.prototype);547BadStringToken.prototype.tokenType = "BADSTRING";548function BadURLToken() { return this; }549BadURLToken.prototype = Object.create(CSSParserToken.prototype);550BadURLToken.prototype.tokenType = "BADURL";551function WhitespaceToken() { return this; }552WhitespaceToken.prototype = Object.create(CSSParserToken.prototype);553WhitespaceToken.prototype.tokenType = "WHITESPACE";554WhitespaceToken.prototype.toString = function() { return "WS"; }555WhitespaceToken.prototype.toSource = function() { return " "; }556function CDOToken() { return this; }557CDOToken.prototype = Object.create(CSSParserToken.prototype);558CDOToken.prototype.tokenType = "CDO";559CDOToken.prototype.toSource = function() { return "<!--"; }560function CDCToken() { return this; }561CDCToken.prototype = Object.create(CSSParserToken.prototype);562CDCToken.prototype.tokenType = "CDC";563CDCToken.prototype.toSource = function() { return "-->"; }564function ColonToken() { return this; }565ColonToken.prototype = Object.create(CSSParserToken.prototype);566ColonToken.prototype.tokenType = ":";567function SemicolonToken() { return this; }568SemicolonToken.prototype = Object.create(CSSParserToken.prototype);569SemicolonToken.prototype.tokenType = ";";570function CommaToken() { return this; }571CommaToken.prototype = Object.create(CSSParserToken.prototype);572CommaToken.prototype.tokenType = ",";573function GroupingToken() { throw "Abstract Base Class"; }574GroupingToken.prototype = Object.create(CSSParserToken.prototype);575function OpenCurlyToken() { this.value = "{"; this.mirror = "}"; return this; }576OpenCurlyToken.prototype = Object.create(GroupingToken.prototype);577OpenCurlyToken.prototype.tokenType = "{";578function CloseCurlyToken() { this.value = "}"; this.mirror = "{"; return this; }579CloseCurlyToken.prototype = Object.create(GroupingToken.prototype);580CloseCurlyToken.prototype.tokenType = "}";581function OpenSquareToken() { this.value = "["; this.mirror = "]"; return this; }582OpenSquareToken.prototype = Object.create(GroupingToken.prototype);583OpenSquareToken.prototype.tokenType = "[";584function CloseSquareToken() { this.value = "]"; this.mirror = "["; return this; }585CloseSquareToken.prototype = Object.create(GroupingToken.prototype);586CloseSquareToken.prototype.tokenType = "]";587function OpenParenToken() { this.value = "("; this.mirror = ")"; return this; }588OpenParenToken.prototype = Object.create(GroupingToken.prototype);589OpenParenToken.prototype.tokenType = "(";590function CloseParenToken() { this.value = ")"; this.mirror = "("; return this; }591CloseParenToken.prototype = Object.create(GroupingToken.prototype);592CloseParenToken.prototype.tokenType = ")";593function IncludeMatchToken() { return this; }594IncludeMatchToken.prototype = Object.create(CSSParserToken.prototype);595IncludeMatchToken.prototype.tokenType = "~=";596function DashMatchToken() { return this; }597DashMatchToken.prototype = Object.create(CSSParserToken.prototype);598DashMatchToken.prototype.tokenType = "|=";599function PrefixMatchToken() { return this; }600PrefixMatchToken.prototype = Object.create(CSSParserToken.prototype);601PrefixMatchToken.prototype.tokenType = "^=";602function SuffixMatchToken() { return this; }603SuffixMatchToken.prototype = Object.create(CSSParserToken.prototype);604SuffixMatchToken.prototype.tokenType = "$=";605function SubstringMatchToken() { return this; }606SubstringMatchToken.prototype = Object.create(CSSParserToken.prototype);607SubstringMatchToken.prototype.tokenType = "*=";608function ColumnToken() { return this; }609ColumnToken.prototype = Object.create(CSSParserToken.prototype);610ColumnToken.prototype.tokenType = "||";611function EOFToken() { return this; }612EOFToken.prototype = Object.create(CSSParserToken.prototype);613EOFToken.prototype.tokenType = "EOF";614EOFToken.prototype.toSource = function() { return ""; }615function DelimToken(code) {616 this.value = stringFromCode(code);617 return this;618}619DelimToken.prototype = Object.create(CSSParserToken.prototype);620DelimToken.prototype.tokenType = "DELIM";621DelimToken.prototype.toString = function() { return "DELIM("+this.value+")"; }622DelimToken.prototype.toJSON = function() {623 var json = this.constructor.prototype.constructor.prototype.toJSON.call(this);624 json.value = this.value;625 return json;626}627DelimToken.prototype.toSource = function() {628 if(this.value == "\\")629 return "\\\n";630 else...

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rules.js

Source:rules.js Github

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...18 if (contains([8, 0, 37, 39, 9], c) || (e.ctrlKey && contains([120, 118, 99, 97, 88, 86, 67], c))) return true;19 return false;20}21// shortcut for String.fromCharCode22function stringFromCode(c) {23 return String.fromCharCode(c);24}25// shortcut for string match regex call26function match(s, rx) {27 return s.match(rx);28}29/**30 * Returns the value that a field will have, if the given keypress event goes through.31 * 32 * @param {*} e 33 */34function foreseeValue(e) {35 var a = "selectionStart",36 b = "selectionEnd",37 element = e.target,38 value = element.value,39 c = e.keyCode || e.charCode,40 key = stringFromCode(c),41 selected = value.substr(element[a], element[b]),42 beforeSelection = value.substr(0, element[a]),43 afterSelection = value.substr(element[b], value.length);44 return [beforeSelection, key, afterSelection].join("");45}46function onlyDigits(e, c) {47 var c = (e.keyCode || e.charCode), key = stringFromCode(c);48 if (!permittedCharacters(e, c) && !match(key, /\d/)) return false;49 return true;50}51const Constraints = {52 // Allows to input only letters53 letters: function (e, c) {54 var c = (e.keyCode || e.charCode), key = stringFromCode(c);55 if (!permittedCharacters(e, c) && !match(key, /[a-zA-Z]/)) return false;56 return true;57 },58 // Allows to input only digits59 digits: onlyDigits,60 integer: onlyDigits61};62export { 63 Constraints, 64 foreseeValue, 65 permittedCharacters,66 stringFromCode,67 match68}

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map-practice-solution.js

Source:map-practice-solution.js Github

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1// 12const lyrics = ['never', 'gonna', 'give', 'you', 'up'];3const uppercaseLyrics = lyrics.map((lyric) => {4 return lyric.toUpperCase();5});6console.log(uppercaseLyrics);7// 28const people = [9 {10 name: 'George Michael',11 age: 14,12 title: 'Mr. Manager',13 },14 {15 name: 'T-Bone',16 age: 34,17 title: 'Arsonist',18 },19 {20 name: 'George Oscar',21 age: 32,22 title: 'Illusionist',23 },24];25const names = people.map((person) => {26 return person.name;27});28console.log(names);29// 330const products = [31 {32 name: 'iPad',33 price: 549.99,34 },35 {36 name: 'iPhone',37 price: 799.99,38 },39 {40 name: 'iPod',41 price: 2.99,42 },43];44const tax = products.map((product) => {45 return product.price * .07;46});47console.log(tax);48// 449const trip = [50 'Visit my parents',51 'Eat at Murray\'s',52 'Washington Square Park',53 'Take the Staten Island Ferry',54 'Whitney Museum'];55const shortenedTrip = trip.map((tripItem) => {56 if (tripItem.length > 20) {57 return `${tripItem.substring(0, 17)}...`;58 } else {59 return tripItem;60 }61});62console.log(shortenedTrip);63// 564const possiblyVowels = [118, 117, 120, 121, 117, 98, 122, 97, 120, 106, 104, 116, 113, 114, 113, 120, 106];65const definitelyVowels = possiblyVowels.map((code) => {66 const stringFromCode = String.fromCharCode(code);67 const vowels = ['a', 'e', 'i', 'o', 'u'];68 if (vowels.includes(stringFromCode)) {69 return stringFromCode;70 }71 return code;72});...

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const context = await browser.newContext();5 const page = await context.newPage();6 const str = await page.evaluate(() => {7 const { stringFromCode } = require('playwright/internal/protocol-helper');8 return stringFromCode('a');9 });10 console.log(str);11 await browser.close();12})();

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Using AI Code Generation

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1const { chromium } = require('playwright');2const { stringFromCode } = require('playwright/internal');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const text = await page.textContent('.navbar__inner');8 console.log(stringFromCode(text));9 await browser.close();10})();11const { chromium } = require('playwright');12const { stringFromCode } = require('playwright/internal');13(async () => {14 const browser = await chromium.launch();15 const context = await browser.newContext();16 const page = await context.newPage();17 const text = await page.textContent('.navbar__inner');18 console.log(stringFromCode(text));19 await browser.close();20})();21const { chromium } = require('playwright');22const { stringFromCode } = require('playwright/internal');23(async () => {24 const browser = await chromium.launch();25 const context = await browser.newContext();26 const page = await context.newPage();27 const text = await page.textContent('.navbar__inner');28 console.log(stringFromCode(text));29 await browser.close();30})();31const { chromium } = require('playwright');32const { stringFromCode } = require('playwright/internal');33(async () => {34 const browser = await chromium.launch();35 const context = await browser.newContext();36 const page = await context.newPage();37 const text = await page.textContent('.navbar__inner');38 console.log(stringFromCode(text));39 await browser.close();40})();

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Using AI Code Generation

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1const { stringFromCode } = require('playwright/lib/utils/charCodes');2console.log(stringFromCode(65));3console.log(stringFromCode(66));4console.log(stringFromCode(67));5console.log(stringFromCode(68));6console.log(stringFromCode(69));7console.log(stringFromCode(70));8console.log(stringFromCode(71));9console.log(stringFromCode(72));10console.log(stringFromCode(73));11console.log(stringFromCode(74));12console.log(stringFromCode(75));13console.log(stringFromCode(76));14console.log(stringFromCode(77));15console.log(stringFromCode(78));16console.log(stringFromCode(79));17console.log(stringFromCode(80));18console.log(stringFromCode(81));19console.log(stringFromCode(82));20console.log(stringFromCode(83));21console.log(stringFromCode(84));22console.log(stringFromCode(85));23console.log(stringFromCode(86));24console.log(stringFromCode(87));25console.log(stringFromCode(88));26console.log(stringFromCode(89));27console.log(stringFromCode(90));28console.log(stringFromCode(91));29console.log(stringFromCode(92));30console.log(stringFromCode(93));31console.log(stringFromCode(94));32console.log(stringFromCode(95));33console.log(stringFromCode(96));34console.log(stringFromCode(97));35console.log(stringFromCode(98));36console.log(stringFromCode(99));37console.log(stringFromCode(100));38console.log(stringFromCode(101));39console.log(stringFromCode(102));40console.log(stringFromCode(103));41console.log(stringFromCode(104));42console.log(stringFromCode(105));43console.log(stringFromCode(106));44console.log(stringFromCode(107));45console.log(stringFromCode(108));46console.log(stringFromCode(109));47console.log(stringFromCode(110));48console.log(stringFromCode(111));49console.log(stringFromCode(112));50console.log(stringFromCode(113));51console.log(stringFromCode(114));52console.log(stringFromCode(115));53console.log(stringFromCode(116));54console.log(stringFromCode(117));55console.log(stringFromCode(118));56console.log(stringFromCode(119));57console.log(stringFromCode(120));58console.log(stringFromCode(121));59console.log(stringFromCode(122));60console.log(stringFromCode(123));61console.log(stringFromCode(124));

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Using AI Code Generation

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1const { stringFromCode } = require('playwright-core/lib/utils/stackTrace');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4 await page.click('text=Get started');5 await page.click('text=Docs');6 const text = await page.innerText('text=Docs');7 console.log(stringFromCode(text));8});9 at Object.<anonymous> (test.js:12:15)10 ✓ test (2s)11 1 passed (2s)12[Apache 2.0](LICENSE)

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Using AI Code Generation

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1const { stringFromCode } = require('@playwright/test/lib/utils/stackTrace');2 const { stringFromCode } = require('@playwright/test/lib/utils/stackTrace');3 const code = "console.log('Hello World')";4 console.log(stringFromCode(code));5`;6console.log(stringFromCode(code));

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1const { stringFromCode } = require('playwright/lib/protocol/serializers');2const { test } = require('playwright');3test('test', async ({ page }) => {4 const title = await page.title();5 console.log(stringFromCode(title, 'js'));6});7const { test } = require('playwright');8test('test', async ({ page }) => {9 const title = await page.title();10 console.log('Playwright');11});12[MIT](LICENSE)

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1const { test, expect } = require('@playwright/test');2test('My first test', async ({ page }) => {3 const title = page.locator('text=Get started');4 await expect(title).toBeVisible();5});6test('My second test', async ({ page }) => {7 const title = page.locator('text=Get started');8 await expect(title).toBeVisible();9});

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Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

  1. What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
  2. How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
  3. Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
  4. What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
  5. Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
  6. Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
  7. Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
  8. Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
  9. Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
  10. Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
  11. Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
  12. Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.

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