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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "InvalidSelectorError", {
enumerable: true,
get: function () {
return _cssParser.InvalidSelectorError;
}
});
exports.allEngineNames = allEngineNames;
exports.customCSSNames = void 0;
Object.defineProperty(exports, "isInvalidSelectorError", {
enumerable: true,
get: function () {
return _cssParser.isInvalidSelectorError;
}
});
exports.parseAttributeSelector = parseAttributeSelector;
exports.parseSelector = parseSelector;
exports.splitSelectorByFrame = splitSelectorByFrame;
exports.stringifySelector = stringifySelector;
var _cssParser = require("./cssParser");
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const kNestedSelectorNames = new Set(['internal:has', 'left-of', 'right-of', 'above', 'below', 'near']);
const kNestedSelectorNamesWithDistance = new Set(['left-of', 'right-of', 'above', 'below', 'near']);
const customCSSNames = new Set(['not', 'is', 'where', 'has', 'scope', 'light', 'visible', 'text', 'text-matches', 'text-is', 'has-text', 'above', 'below', 'right-of', 'left-of', 'near', 'nth-match']);
exports.customCSSNames = customCSSNames;
function parseSelector(selector) {
const result = parseSelectorString(selector);
const parts = result.parts.map(part => {
if (part.name === 'css' || part.name === 'css:light') {
if (part.name === 'css:light') part.body = ':light(' + part.body + ')';
const parsedCSS = (0, _cssParser.parseCSS)(part.body, customCSSNames);
return {
name: 'css',
body: parsedCSS.selector,
source: part.body
};
}
if (kNestedSelectorNames.has(part.name)) {
let innerSelector;
let distance;
try {
const unescaped = JSON.parse('[' + part.body + ']');
if (!Array.isArray(unescaped) || unescaped.length < 1 || unescaped.length > 2 || typeof unescaped[0] !== 'string') throw new _cssParser.InvalidSelectorError(`Malformed selector: ${part.name}=` + part.body);
innerSelector = unescaped[0];
if (unescaped.length === 2) {
if (typeof unescaped[1] !== 'number' || !kNestedSelectorNamesWithDistance.has(part.name)) throw new _cssParser.InvalidSelectorError(`Malformed selector: ${part.name}=` + part.body);
distance = unescaped[1];
}
} catch (e) {
throw new _cssParser.InvalidSelectorError(`Malformed selector: ${part.name}=` + part.body);
}
const result = {
name: part.name,
source: part.body,
body: {
parsed: parseSelector(innerSelector),
distance
}
};
if (result.body.parsed.parts.some(part => part.name === 'internal:control' && part.body === 'enter-frame')) throw new _cssParser.InvalidSelectorError(`Frames are not allowed inside "${part.name}" selectors`);
return result;
}
return {
...part,
source: part.body
};
});
if (kNestedSelectorNames.has(parts[0].name)) throw new _cssParser.InvalidSelectorError(`"${parts[0].name}" selector cannot be first`);
return {
capture: result.capture,
parts
};
}
function splitSelectorByFrame(selectorText) {
const selector = parseSelector(selectorText);
const result = [];
let chunk = {
parts: []
};
let chunkStartIndex = 0;
for (let i = 0; i < selector.parts.length; ++i) {
const part = selector.parts[i];
if (part.name === 'internal:control' && part.body === 'enter-frame') {
if (!chunk.parts.length) throw new _cssParser.InvalidSelectorError('Selector cannot start with entering frame, select the iframe first');
result.push(chunk);
chunk = {
parts: []
};
chunkStartIndex = i + 1;
continue;
}
if (selector.capture === i) chunk.capture = i - chunkStartIndex;
chunk.parts.push(part);
}
if (!chunk.parts.length) throw new _cssParser.InvalidSelectorError(`Selector cannot end with entering frame, while parsing selector ${selectorText}`);
result.push(chunk);
if (typeof selector.capture === 'number' && typeof result[result.length - 1].capture !== 'number') throw new _cssParser.InvalidSelectorError(`Can not capture the selector before diving into the frame. Only use * after the last frame has been selected`);
return result;
}
function stringifySelector(selector) {
if (typeof selector === 'string') return selector;
return selector.parts.map((p, i) => {
const prefix = p.name === 'css' ? '' : p.name + '=';
return `${i === selector.capture ? '*' : ''}${prefix}${p.source}`;
}).join(' >> ');
}
function allEngineNames(selector) {
const result = new Set();
const visit = selector => {
for (const part of selector.parts) {
result.add(part.name);
if (kNestedSelectorNames.has(part.name)) visit(part.body.parsed);
}
};
visit(selector);
return result;
}
function parseSelectorString(selector) {
let index = 0;
let quote;
let start = 0;
const result = {
parts: []
};
const append = () => {
const part = selector.substring(start, index).trim();
const eqIndex = part.indexOf('=');
let name;
let body;
if (eqIndex !== -1 && part.substring(0, eqIndex).trim().match(/^[a-zA-Z_0-9-+:*]+$/)) {
name = part.substring(0, eqIndex).trim();
body = part.substring(eqIndex + 1);
} else if (part.length > 1 && part[0] === '"' && part[part.length - 1] === '"') {
name = 'text';
body = part;
} else if (part.length > 1 && part[0] === "'" && part[part.length - 1] === "'") {
name = 'text';
body = part;
} else if (/^\(*\/\//.test(part) || part.startsWith('..')) {
// If selector starts with '//' or '//' prefixed with multiple opening
// parenthesis, consider xpath. @see https://github.com/microsoft/playwright/issues/817
// If selector starts with '..', consider xpath as well.
name = 'xpath';
body = part;
} else {
name = 'css';
body = part;
}
let capture = false;
if (name[0] === '*') {
capture = true;
name = name.substring(1);
}
result.parts.push({
name,
body
});
if (capture) {
if (result.capture !== undefined) throw new _cssParser.InvalidSelectorError(`Only one of the selectors can capture using * modifier`);
result.capture = result.parts.length - 1;
}
};
if (!selector.includes('>>')) {
index = selector.length;
append();
return result;
}
const shouldIgnoreTextSelectorQuote = () => {
const prefix = selector.substring(start, index);
const match = prefix.match(/^\s*text\s*=(.*)$/);
// Must be a text selector with some text before the quote.
return !!match && !!match[1];
};
while (index < selector.length) {
const c = selector[index];
if (c === '\\' && index + 1 < selector.length) {
index += 2;
} else if (c === quote) {
quote = undefined;
index++;
} else if (!quote && (c === '"' || c === '\'' || c === '`') && !shouldIgnoreTextSelectorQuote()) {
quote = c;
index++;
} else if (!quote && c === '>' && selector[index + 1] === '>') {
append();
index += 2;
start = index;
} else {
index++;
}
}
append();
return result;
}
function parseAttributeSelector(selector, allowUnquotedStrings) {
let wp = 0;
let EOL = selector.length === 0;
const next = () => selector[wp] || '';
const eat1 = () => {
const result = next();
++wp;
EOL = wp >= selector.length;
return result;
};
const syntaxError = stage => {
if (EOL) throw new _cssParser.InvalidSelectorError(`Unexpected end of selector while parsing selector \`${selector}\``);
throw new _cssParser.InvalidSelectorError(`Error while parsing selector \`${selector}\` - unexpected symbol "${next()}" at position ${wp}` + (stage ? ' during ' + stage : ''));
};
function skipSpaces() {
while (!EOL && /\s/.test(next())) eat1();
}
function isCSSNameChar(char) {
// https://www.w3.org/TR/css-syntax-3/#ident-token-diagram
return char >= '\u0080' // non-ascii
|| char >= '\u0030' && char <= '\u0039' // digit
|| char >= '\u0041' && char <= '\u005a' // uppercase letter
|| char >= '\u0061' && char <= '\u007a' // lowercase letter
|| char >= '\u0030' && char <= '\u0039' // digit
|| char === '\u005f' // "_"
|| char === '\u002d'; // "-"
}
function readIdentifier() {
let result = '';
skipSpaces();
while (!EOL && isCSSNameChar(next())) result += eat1();
return result;
}
function readQuotedString(quote) {
let result = eat1();
if (result !== quote) syntaxError('parsing quoted string');
while (!EOL && next() !== quote) {
if (next() === '\\') eat1();
result += eat1();
}
if (next() !== quote) syntaxError('parsing quoted string');
result += eat1();
return result;
}
function readRegularExpression() {
if (eat1() !== '/') syntaxError('parsing regular expression');
let source = '';
let inClass = false;
// https://262.ecma-international.org/11.0/#sec-literals-regular-expression-literals
while (!EOL) {
if (next() === '\\') {
source += eat1();
if (EOL) syntaxError('parsing regular expressiion');
} else if (inClass && next() === ']') {
inClass = false;
} else if (!inClass && next() === '[') {
inClass = true;
} else if (!inClass && next() === '/') {
break;
}
source += eat1();
}
if (eat1() !== '/') syntaxError('parsing regular expression');
let flags = '';
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
while (!EOL && next().match(/[dgimsuy]/)) flags += eat1();
try {
return new RegExp(source, flags);
} catch (e) {
throw new _cssParser.InvalidSelectorError(`Error while parsing selector \`${selector}\`: ${e.message}`);
}
}
function readAttributeToken() {
let token = '';
skipSpaces();
if (next() === `'` || next() === `"`) token = readQuotedString(next()).slice(1, -1);else token = readIdentifier();
if (!token) syntaxError('parsing property path');
return token;
}
function readOperator() {
skipSpaces();
let op = '';
if (!EOL) op += eat1();
if (!EOL && op !== '=') op += eat1();
if (!['=', '*=', '^=', '$=', '|=', '~='].includes(op)) syntaxError('parsing operator');
return op;
}
function readAttribute() {
// skip leading [
eat1();
// read attribute name:
// foo.bar
// 'foo' . "ba zz"
const jsonPath = [];
jsonPath.push(readAttributeToken());
skipSpaces();
while (next() === '.') {
eat1();
jsonPath.push(readAttributeToken());
skipSpaces();
}
// check property is truthy: [enabled]
if (next() === ']') {
eat1();
return {
name: jsonPath.join('.'),
jsonPath,
op: '<truthy>',
value: null,
caseSensitive: false
};
}
const operator = readOperator();
let value = undefined;
let caseSensitive = true;
skipSpaces();
if (next() === '/') {
if (operator !== '=') throw new _cssParser.InvalidSelectorError(`Error while parsing selector \`${selector}\` - cannot use ${operator} in attribute with regular expression`);
value = readRegularExpression();
} else if (next() === `'` || next() === `"`) {
value = readQuotedString(next()).slice(1, -1);
skipSpaces();
if (next() === 'i' || next() === 'I') {
caseSensitive = false;
eat1();
} else if (next() === 's' || next() === 'S') {
caseSensitive = true;
eat1();
}
} else {
value = '';
while (!EOL && (isCSSNameChar(next()) || next() === '+' || next() === '.')) value += eat1();
if (value === 'true') {
value = true;
} else if (value === 'false') {
value = false;
} else {
if (!allowUnquotedStrings) {
value = +value;
if (Number.isNaN(value)) syntaxError('parsing attribute value');
}
}
}
skipSpaces();
if (next() !== ']') syntaxError('parsing attribute value');
eat1();
if (operator !== '=' && typeof value !== 'string') throw new _cssParser.InvalidSelectorError(`Error while parsing selector \`${selector}\` - cannot use ${operator} in attribute with non-string matching value - ${value}`);
return {
name: jsonPath.join('.'),
jsonPath,
op: operator,
value,
caseSensitive
};
}
const result = {
name: '',
attributes: []
};
result.name = readIdentifier();
skipSpaces();
while (next() === '[') {
result.attributes.push(readAttribute());
skipSpaces();
}
if (!EOL) syntaxError(undefined);
if (!result.name && !result.attributes.length) throw new _cssParser.InvalidSelectorError(`Error while parsing selector \`${selector}\` - selector cannot be empty`);
return result;
}