source: trip-planner-front/node_modules/@angular/compiler/src/selector.js

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1/**
2 * @license
3 * Copyright Google LLC All Rights Reserved.
4 *
5 * Use of this source code is governed by an MIT-style license that can be
6 * found in the LICENSE file at https://angular.io/license
7 */
8(function (factory) {
9 if (typeof module === "object" && typeof module.exports === "object") {
10 var v = factory(require, exports);
11 if (v !== undefined) module.exports = v;
12 }
13 else if (typeof define === "function" && define.amd) {
14 define("@angular/compiler/src/selector", ["require", "exports", "@angular/compiler/src/ml_parser/html_tags"], factory);
15 }
16})(function (require, exports) {
17 "use strict";
18 Object.defineProperty(exports, "__esModule", { value: true });
19 exports.SelectorContext = exports.SelectorListContext = exports.SelectorMatcher = exports.CssSelector = void 0;
20 var html_tags_1 = require("@angular/compiler/src/ml_parser/html_tags");
21 var _SELECTOR_REGEXP = new RegExp('(\\:not\\()|' + // 1: ":not("
22 '(([\\.\\#]?)[-\\w]+)|' + // 2: "tag"; 3: "."/"#";
23 // "-" should appear first in the regexp below as FF31 parses "[.-\w]" as a range
24 // 4: attribute; 5: attribute_string; 6: attribute_value
25 '(?:\\[([-.\\w*\\\\$]+)(?:=([\"\']?)([^\\]\"\']*)\\5)?\\])|' + // "[name]", "[name=value]",
26 // "[name="value"]",
27 // "[name='value']"
28 '(\\))|' + // 7: ")"
29 '(\\s*,\\s*)', // 8: ","
30 'g');
31 /**
32 * A css selector contains an element name,
33 * css classes and attribute/value pairs with the purpose
34 * of selecting subsets out of them.
35 */
36 var CssSelector = /** @class */ (function () {
37 function CssSelector() {
38 this.element = null;
39 this.classNames = [];
40 /**
41 * The selectors are encoded in pairs where:
42 * - even locations are attribute names
43 * - odd locations are attribute values.
44 *
45 * Example:
46 * Selector: `[key1=value1][key2]` would parse to:
47 * ```
48 * ['key1', 'value1', 'key2', '']
49 * ```
50 */
51 this.attrs = [];
52 this.notSelectors = [];
53 }
54 CssSelector.parse = function (selector) {
55 var results = [];
56 var _addResult = function (res, cssSel) {
57 if (cssSel.notSelectors.length > 0 && !cssSel.element && cssSel.classNames.length == 0 &&
58 cssSel.attrs.length == 0) {
59 cssSel.element = '*';
60 }
61 res.push(cssSel);
62 };
63 var cssSelector = new CssSelector();
64 var match;
65 var current = cssSelector;
66 var inNot = false;
67 _SELECTOR_REGEXP.lastIndex = 0;
68 while (match = _SELECTOR_REGEXP.exec(selector)) {
69 if (match[1 /* NOT */]) {
70 if (inNot) {
71 throw new Error('Nesting :not in a selector is not allowed');
72 }
73 inNot = true;
74 current = new CssSelector();
75 cssSelector.notSelectors.push(current);
76 }
77 var tag = match[2 /* TAG */];
78 if (tag) {
79 var prefix = match[3 /* PREFIX */];
80 if (prefix === '#') {
81 // #hash
82 current.addAttribute('id', tag.substr(1));
83 }
84 else if (prefix === '.') {
85 // Class
86 current.addClassName(tag.substr(1));
87 }
88 else {
89 // Element
90 current.setElement(tag);
91 }
92 }
93 var attribute = match[4 /* ATTRIBUTE */];
94 if (attribute) {
95 current.addAttribute(current.unescapeAttribute(attribute), match[6 /* ATTRIBUTE_VALUE */]);
96 }
97 if (match[7 /* NOT_END */]) {
98 inNot = false;
99 current = cssSelector;
100 }
101 if (match[8 /* SEPARATOR */]) {
102 if (inNot) {
103 throw new Error('Multiple selectors in :not are not supported');
104 }
105 _addResult(results, cssSelector);
106 cssSelector = current = new CssSelector();
107 }
108 }
109 _addResult(results, cssSelector);
110 return results;
111 };
112 /**
113 * Unescape `\$` sequences from the CSS attribute selector.
114 *
115 * This is needed because `$` can have a special meaning in CSS selectors,
116 * but we might want to match an attribute that contains `$`.
117 * [MDN web link for more
118 * info](https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors).
119 * @param attr the attribute to unescape.
120 * @returns the unescaped string.
121 */
122 CssSelector.prototype.unescapeAttribute = function (attr) {
123 var result = '';
124 var escaping = false;
125 for (var i = 0; i < attr.length; i++) {
126 var char = attr.charAt(i);
127 if (char === '\\') {
128 escaping = true;
129 continue;
130 }
131 if (char === '$' && !escaping) {
132 throw new Error("Error in attribute selector \"" + attr + "\". " +
133 "Unescaped \"$\" is not supported. Please escape with \"\\$\".");
134 }
135 escaping = false;
136 result += char;
137 }
138 return result;
139 };
140 /**
141 * Escape `$` sequences from the CSS attribute selector.
142 *
143 * This is needed because `$` can have a special meaning in CSS selectors,
144 * with this method we are escaping `$` with `\$'.
145 * [MDN web link for more
146 * info](https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors).
147 * @param attr the attribute to escape.
148 * @returns the escaped string.
149 */
150 CssSelector.prototype.escapeAttribute = function (attr) {
151 return attr.replace(/\\/g, '\\\\').replace(/\$/g, '\\$');
152 };
153 CssSelector.prototype.isElementSelector = function () {
154 return this.hasElementSelector() && this.classNames.length == 0 && this.attrs.length == 0 &&
155 this.notSelectors.length === 0;
156 };
157 CssSelector.prototype.hasElementSelector = function () {
158 return !!this.element;
159 };
160 CssSelector.prototype.setElement = function (element) {
161 if (element === void 0) { element = null; }
162 this.element = element;
163 };
164 /** Gets a template string for an element that matches the selector. */
165 CssSelector.prototype.getMatchingElementTemplate = function () {
166 var tagName = this.element || 'div';
167 var classAttr = this.classNames.length > 0 ? " class=\"" + this.classNames.join(' ') + "\"" : '';
168 var attrs = '';
169 for (var i = 0; i < this.attrs.length; i += 2) {
170 var attrName = this.attrs[i];
171 var attrValue = this.attrs[i + 1] !== '' ? "=\"" + this.attrs[i + 1] + "\"" : '';
172 attrs += " " + attrName + attrValue;
173 }
174 return html_tags_1.getHtmlTagDefinition(tagName).isVoid ? "<" + tagName + classAttr + attrs + "/>" :
175 "<" + tagName + classAttr + attrs + "></" + tagName + ">";
176 };
177 CssSelector.prototype.getAttrs = function () {
178 var result = [];
179 if (this.classNames.length > 0) {
180 result.push('class', this.classNames.join(' '));
181 }
182 return result.concat(this.attrs);
183 };
184 CssSelector.prototype.addAttribute = function (name, value) {
185 if (value === void 0) { value = ''; }
186 this.attrs.push(name, value && value.toLowerCase() || '');
187 };
188 CssSelector.prototype.addClassName = function (name) {
189 this.classNames.push(name.toLowerCase());
190 };
191 CssSelector.prototype.toString = function () {
192 var res = this.element || '';
193 if (this.classNames) {
194 this.classNames.forEach(function (klass) { return res += "." + klass; });
195 }
196 if (this.attrs) {
197 for (var i = 0; i < this.attrs.length; i += 2) {
198 var name_1 = this.escapeAttribute(this.attrs[i]);
199 var value = this.attrs[i + 1];
200 res += "[" + name_1 + (value ? '=' + value : '') + "]";
201 }
202 }
203 this.notSelectors.forEach(function (notSelector) { return res += ":not(" + notSelector + ")"; });
204 return res;
205 };
206 return CssSelector;
207 }());
208 exports.CssSelector = CssSelector;
209 /**
210 * Reads a list of CssSelectors and allows to calculate which ones
211 * are contained in a given CssSelector.
212 */
213 var SelectorMatcher = /** @class */ (function () {
214 function SelectorMatcher() {
215 this._elementMap = new Map();
216 this._elementPartialMap = new Map();
217 this._classMap = new Map();
218 this._classPartialMap = new Map();
219 this._attrValueMap = new Map();
220 this._attrValuePartialMap = new Map();
221 this._listContexts = [];
222 }
223 SelectorMatcher.createNotMatcher = function (notSelectors) {
224 var notMatcher = new SelectorMatcher();
225 notMatcher.addSelectables(notSelectors, null);
226 return notMatcher;
227 };
228 SelectorMatcher.prototype.addSelectables = function (cssSelectors, callbackCtxt) {
229 var listContext = null;
230 if (cssSelectors.length > 1) {
231 listContext = new SelectorListContext(cssSelectors);
232 this._listContexts.push(listContext);
233 }
234 for (var i = 0; i < cssSelectors.length; i++) {
235 this._addSelectable(cssSelectors[i], callbackCtxt, listContext);
236 }
237 };
238 /**
239 * Add an object that can be found later on by calling `match`.
240 * @param cssSelector A css selector
241 * @param callbackCtxt An opaque object that will be given to the callback of the `match` function
242 */
243 SelectorMatcher.prototype._addSelectable = function (cssSelector, callbackCtxt, listContext) {
244 var matcher = this;
245 var element = cssSelector.element;
246 var classNames = cssSelector.classNames;
247 var attrs = cssSelector.attrs;
248 var selectable = new SelectorContext(cssSelector, callbackCtxt, listContext);
249 if (element) {
250 var isTerminal = attrs.length === 0 && classNames.length === 0;
251 if (isTerminal) {
252 this._addTerminal(matcher._elementMap, element, selectable);
253 }
254 else {
255 matcher = this._addPartial(matcher._elementPartialMap, element);
256 }
257 }
258 if (classNames) {
259 for (var i = 0; i < classNames.length; i++) {
260 var isTerminal = attrs.length === 0 && i === classNames.length - 1;
261 var className = classNames[i];
262 if (isTerminal) {
263 this._addTerminal(matcher._classMap, className, selectable);
264 }
265 else {
266 matcher = this._addPartial(matcher._classPartialMap, className);
267 }
268 }
269 }
270 if (attrs) {
271 for (var i = 0; i < attrs.length; i += 2) {
272 var isTerminal = i === attrs.length - 2;
273 var name_2 = attrs[i];
274 var value = attrs[i + 1];
275 if (isTerminal) {
276 var terminalMap = matcher._attrValueMap;
277 var terminalValuesMap = terminalMap.get(name_2);
278 if (!terminalValuesMap) {
279 terminalValuesMap = new Map();
280 terminalMap.set(name_2, terminalValuesMap);
281 }
282 this._addTerminal(terminalValuesMap, value, selectable);
283 }
284 else {
285 var partialMap = matcher._attrValuePartialMap;
286 var partialValuesMap = partialMap.get(name_2);
287 if (!partialValuesMap) {
288 partialValuesMap = new Map();
289 partialMap.set(name_2, partialValuesMap);
290 }
291 matcher = this._addPartial(partialValuesMap, value);
292 }
293 }
294 }
295 };
296 SelectorMatcher.prototype._addTerminal = function (map, name, selectable) {
297 var terminalList = map.get(name);
298 if (!terminalList) {
299 terminalList = [];
300 map.set(name, terminalList);
301 }
302 terminalList.push(selectable);
303 };
304 SelectorMatcher.prototype._addPartial = function (map, name) {
305 var matcher = map.get(name);
306 if (!matcher) {
307 matcher = new SelectorMatcher();
308 map.set(name, matcher);
309 }
310 return matcher;
311 };
312 /**
313 * Find the objects that have been added via `addSelectable`
314 * whose css selector is contained in the given css selector.
315 * @param cssSelector A css selector
316 * @param matchedCallback This callback will be called with the object handed into `addSelectable`
317 * @return boolean true if a match was found
318 */
319 SelectorMatcher.prototype.match = function (cssSelector, matchedCallback) {
320 var result = false;
321 var element = cssSelector.element;
322 var classNames = cssSelector.classNames;
323 var attrs = cssSelector.attrs;
324 for (var i = 0; i < this._listContexts.length; i++) {
325 this._listContexts[i].alreadyMatched = false;
326 }
327 result = this._matchTerminal(this._elementMap, element, cssSelector, matchedCallback) || result;
328 result = this._matchPartial(this._elementPartialMap, element, cssSelector, matchedCallback) ||
329 result;
330 if (classNames) {
331 for (var i = 0; i < classNames.length; i++) {
332 var className = classNames[i];
333 result =
334 this._matchTerminal(this._classMap, className, cssSelector, matchedCallback) || result;
335 result =
336 this._matchPartial(this._classPartialMap, className, cssSelector, matchedCallback) ||
337 result;
338 }
339 }
340 if (attrs) {
341 for (var i = 0; i < attrs.length; i += 2) {
342 var name_3 = attrs[i];
343 var value = attrs[i + 1];
344 var terminalValuesMap = this._attrValueMap.get(name_3);
345 if (value) {
346 result =
347 this._matchTerminal(terminalValuesMap, '', cssSelector, matchedCallback) || result;
348 }
349 result =
350 this._matchTerminal(terminalValuesMap, value, cssSelector, matchedCallback) || result;
351 var partialValuesMap = this._attrValuePartialMap.get(name_3);
352 if (value) {
353 result = this._matchPartial(partialValuesMap, '', cssSelector, matchedCallback) || result;
354 }
355 result =
356 this._matchPartial(partialValuesMap, value, cssSelector, matchedCallback) || result;
357 }
358 }
359 return result;
360 };
361 /** @internal */
362 SelectorMatcher.prototype._matchTerminal = function (map, name, cssSelector, matchedCallback) {
363 if (!map || typeof name !== 'string') {
364 return false;
365 }
366 var selectables = map.get(name) || [];
367 var starSelectables = map.get('*');
368 if (starSelectables) {
369 selectables = selectables.concat(starSelectables);
370 }
371 if (selectables.length === 0) {
372 return false;
373 }
374 var selectable;
375 var result = false;
376 for (var i = 0; i < selectables.length; i++) {
377 selectable = selectables[i];
378 result = selectable.finalize(cssSelector, matchedCallback) || result;
379 }
380 return result;
381 };
382 /** @internal */
383 SelectorMatcher.prototype._matchPartial = function (map, name, cssSelector, matchedCallback) {
384 if (!map || typeof name !== 'string') {
385 return false;
386 }
387 var nestedSelector = map.get(name);
388 if (!nestedSelector) {
389 return false;
390 }
391 // TODO(perf): get rid of recursion and measure again
392 // TODO(perf): don't pass the whole selector into the recursion,
393 // but only the not processed parts
394 return nestedSelector.match(cssSelector, matchedCallback);
395 };
396 return SelectorMatcher;
397 }());
398 exports.SelectorMatcher = SelectorMatcher;
399 var SelectorListContext = /** @class */ (function () {
400 function SelectorListContext(selectors) {
401 this.selectors = selectors;
402 this.alreadyMatched = false;
403 }
404 return SelectorListContext;
405 }());
406 exports.SelectorListContext = SelectorListContext;
407 // Store context to pass back selector and context when a selector is matched
408 var SelectorContext = /** @class */ (function () {
409 function SelectorContext(selector, cbContext, listContext) {
410 this.selector = selector;
411 this.cbContext = cbContext;
412 this.listContext = listContext;
413 this.notSelectors = selector.notSelectors;
414 }
415 SelectorContext.prototype.finalize = function (cssSelector, callback) {
416 var result = true;
417 if (this.notSelectors.length > 0 && (!this.listContext || !this.listContext.alreadyMatched)) {
418 var notMatcher = SelectorMatcher.createNotMatcher(this.notSelectors);
419 result = !notMatcher.match(cssSelector, null);
420 }
421 if (result && callback && (!this.listContext || !this.listContext.alreadyMatched)) {
422 if (this.listContext) {
423 this.listContext.alreadyMatched = true;
424 }
425 callback(this.selector, this.cbContext);
426 }
427 return result;
428 };
429 return SelectorContext;
430 }());
431 exports.SelectorContext = SelectorContext;
432});
433//# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {getHtmlTagDefinition} from './ml_parser/html_tags';\n\nconst _SELECTOR_REGEXP = new RegExp(\n    '(\\\\:not\\\\()|' +               // 1: \":not(\"\n        '(([\\\\.\\\\#]?)[-\\\\w]+)|' +  // 2: \"tag\"; 3: \".\"/\"#\";\n        // \"-\" should appear first in the regexp below as FF31 parses \"[.-\\w]\" as a range\n        // 4: attribute; 5: attribute_string; 6: attribute_value\n        '(?:\\\\[([-.\\\\w*\\\\\\\\$]+)(?:=([\\\"\\']?)([^\\\\]\\\"\\']*)\\\\5)?\\\\])|' +  // \"[name]\", \"[name=value]\",\n                                                                        // \"[name=\"value\"]\",\n                                                                        // \"[name='value']\"\n        '(\\\\))|' +                                                      // 7: \")\"\n        '(\\\\s*,\\\\s*)',                                                  // 8: \",\"\n    'g');\n\n/**\n * These offsets should match the match-groups in `_SELECTOR_REGEXP` offsets.\n */\nconst enum SelectorRegexp {\n  ALL = 0,  // The whole match\n  NOT = 1,\n  TAG = 2,\n  PREFIX = 3,\n  ATTRIBUTE = 4,\n  ATTRIBUTE_STRING = 5,\n  ATTRIBUTE_VALUE = 6,\n  NOT_END = 7,\n  SEPARATOR = 8,\n}\n/**\n * A css selector contains an element name,\n * css classes and attribute/value pairs with the purpose\n * of selecting subsets out of them.\n */\nexport class CssSelector {\n  element: string|null = null;\n  classNames: string[] = [];\n  /**\n   * The selectors are encoded in pairs where:\n   * - even locations are attribute names\n   * - odd locations are attribute values.\n   *\n   * Example:\n   * Selector: `[key1=value1][key2]` would parse to:\n   * ```\n   * ['key1', 'value1', 'key2', '']\n   * ```\n   */\n  attrs: string[] = [];\n  notSelectors: CssSelector[] = [];\n\n  static parse(selector: string): CssSelector[] {\n    const results: CssSelector[] = [];\n    const _addResult = (res: CssSelector[], cssSel: CssSelector) => {\n      if (cssSel.notSelectors.length > 0 && !cssSel.element && cssSel.classNames.length == 0 &&\n          cssSel.attrs.length == 0) {\n        cssSel.element = '*';\n      }\n      res.push(cssSel);\n    };\n    let cssSelector = new CssSelector();\n    let match: string[]|null;\n    let current = cssSelector;\n    let inNot = false;\n    _SELECTOR_REGEXP.lastIndex = 0;\n    while (match = _SELECTOR_REGEXP.exec(selector)) {\n      if (match[SelectorRegexp.NOT]) {\n        if (inNot) {\n          throw new Error('Nesting :not in a selector is not allowed');\n        }\n        inNot = true;\n        current = new CssSelector();\n        cssSelector.notSelectors.push(current);\n      }\n      const tag = match[SelectorRegexp.TAG];\n      if (tag) {\n        const prefix = match[SelectorRegexp.PREFIX];\n        if (prefix === '#') {\n          // #hash\n          current.addAttribute('id', tag.substr(1));\n        } else if (prefix === '.') {\n          // Class\n          current.addClassName(tag.substr(1));\n        } else {\n          // Element\n          current.setElement(tag);\n        }\n      }\n      const attribute = match[SelectorRegexp.ATTRIBUTE];\n\n      if (attribute) {\n        current.addAttribute(\n            current.unescapeAttribute(attribute), match[SelectorRegexp.ATTRIBUTE_VALUE]);\n      }\n      if (match[SelectorRegexp.NOT_END]) {\n        inNot = false;\n        current = cssSelector;\n      }\n      if (match[SelectorRegexp.SEPARATOR]) {\n        if (inNot) {\n          throw new Error('Multiple selectors in :not are not supported');\n        }\n        _addResult(results, cssSelector);\n        cssSelector = current = new CssSelector();\n      }\n    }\n    _addResult(results, cssSelector);\n    return results;\n  }\n\n  /**\n   * Unescape `\\$` sequences from the CSS attribute selector.\n   *\n   * This is needed because `$` can have a special meaning in CSS selectors,\n   * but we might want to match an attribute that contains `$`.\n   * [MDN web link for more\n   * info](https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors).\n   * @param attr the attribute to unescape.\n   * @returns the unescaped string.\n   */\n  unescapeAttribute(attr: string): string {\n    let result = '';\n    let escaping = false;\n    for (let i = 0; i < attr.length; i++) {\n      const char = attr.charAt(i);\n      if (char === '\\\\') {\n        escaping = true;\n        continue;\n      }\n      if (char === '$' && !escaping) {\n        throw new Error(\n            `Error in attribute selector \"${attr}\". ` +\n            `Unescaped \"$\" is not supported. Please escape with \"\\\\$\".`);\n      }\n      escaping = false;\n      result += char;\n    }\n    return result;\n  }\n\n  /**\n   * Escape `$` sequences from the CSS attribute selector.\n   *\n   * This is needed because `$` can have a special meaning in CSS selectors,\n   * with this method we are escaping `$` with `\\$'.\n   * [MDN web link for more\n   * info](https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors).\n   * @param attr the attribute to escape.\n   * @returns the escaped string. \n   */\n  escapeAttribute(attr: string): string {\n    return attr.replace(/\\\\/g, '\\\\\\\\').replace(/\\$/g, '\\\\$');\n  }\n\n  isElementSelector(): boolean {\n    return this.hasElementSelector() && this.classNames.length == 0 && this.attrs.length == 0 &&\n        this.notSelectors.length === 0;\n  }\n\n  hasElementSelector(): boolean {\n    return !!this.element;\n  }\n\n  setElement(element: string|null = null) {\n    this.element = element;\n  }\n\n  /** Gets a template string for an element that matches the selector. */\n  getMatchingElementTemplate(): string {\n    const tagName = this.element || 'div';\n    const classAttr = this.classNames.length > 0 ? ` class=\"${this.classNames.join(' ')}\"` : '';\n\n    let attrs = '';\n    for (let i = 0; i < this.attrs.length; i += 2) {\n      const attrName = this.attrs[i];\n      const attrValue = this.attrs[i + 1] !== '' ? `=\"${this.attrs[i + 1]}\"` : '';\n      attrs += ` ${attrName}${attrValue}`;\n    }\n\n    return getHtmlTagDefinition(tagName).isVoid ? `<${tagName}${classAttr}${attrs}/>` :\n                                                  `<${tagName}${classAttr}${attrs}></${tagName}>`;\n  }\n\n  getAttrs(): string[] {\n    const result: string[] = [];\n    if (this.classNames.length > 0) {\n      result.push('class', this.classNames.join(' '));\n    }\n    return result.concat(this.attrs);\n  }\n\n  addAttribute(name: string, value: string = '') {\n    this.attrs.push(name, value && value.toLowerCase() || '');\n  }\n\n  addClassName(name: string) {\n    this.classNames.push(name.toLowerCase());\n  }\n\n  toString(): string {\n    let res: string = this.element || '';\n    if (this.classNames) {\n      this.classNames.forEach(klass => res += `.${klass}`);\n    }\n    if (this.attrs) {\n      for (let i = 0; i < this.attrs.length; i += 2) {\n        const name = this.escapeAttribute(this.attrs[i]);\n        const value = this.attrs[i + 1];\n        res += `[${name}${value ? '=' + value : ''}]`;\n      }\n    }\n    this.notSelectors.forEach(notSelector => res += `:not(${notSelector})`);\n    return res;\n  }\n}\n\n/**\n * Reads a list of CssSelectors and allows to calculate which ones\n * are contained in a given CssSelector.\n */\nexport class SelectorMatcher<T = any> {\n  static createNotMatcher(notSelectors: CssSelector[]): SelectorMatcher<null> {\n    const notMatcher = new SelectorMatcher<null>();\n    notMatcher.addSelectables(notSelectors, null);\n    return notMatcher;\n  }\n\n  private _elementMap = new Map<string, SelectorContext<T>[]>();\n  private _elementPartialMap = new Map<string, SelectorMatcher<T>>();\n  private _classMap = new Map<string, SelectorContext<T>[]>();\n  private _classPartialMap = new Map<string, SelectorMatcher<T>>();\n  private _attrValueMap = new Map<string, Map<string, SelectorContext<T>[]>>();\n  private _attrValuePartialMap = new Map<string, Map<string, SelectorMatcher<T>>>();\n  private _listContexts: SelectorListContext[] = [];\n\n  addSelectables(cssSelectors: CssSelector[], callbackCtxt?: T) {\n    let listContext: SelectorListContext = null!;\n    if (cssSelectors.length > 1) {\n      listContext = new SelectorListContext(cssSelectors);\n      this._listContexts.push(listContext);\n    }\n    for (let i = 0; i < cssSelectors.length; i++) {\n      this._addSelectable(cssSelectors[i], callbackCtxt as T, listContext);\n    }\n  }\n\n  /**\n   * Add an object that can be found later on by calling `match`.\n   * @param cssSelector A css selector\n   * @param callbackCtxt An opaque object that will be given to the callback of the `match` function\n   */\n  private _addSelectable(\n      cssSelector: CssSelector, callbackCtxt: T, listContext: SelectorListContext) {\n    let matcher: SelectorMatcher<T> = this;\n    const element = cssSelector.element;\n    const classNames = cssSelector.classNames;\n    const attrs = cssSelector.attrs;\n    const selectable = new SelectorContext(cssSelector, callbackCtxt, listContext);\n\n    if (element) {\n      const isTerminal = attrs.length === 0 && classNames.length === 0;\n      if (isTerminal) {\n        this._addTerminal(matcher._elementMap, element, selectable);\n      } else {\n        matcher = this._addPartial(matcher._elementPartialMap, element);\n      }\n    }\n\n    if (classNames) {\n      for (let i = 0; i < classNames.length; i++) {\n        const isTerminal = attrs.length === 0 && i === classNames.length - 1;\n        const className = classNames[i];\n        if (isTerminal) {\n          this._addTerminal(matcher._classMap, className, selectable);\n        } else {\n          matcher = this._addPartial(matcher._classPartialMap, className);\n        }\n      }\n    }\n\n    if (attrs) {\n      for (let i = 0; i < attrs.length; i += 2) {\n        const isTerminal = i === attrs.length - 2;\n        const name = attrs[i];\n        const value = attrs[i + 1];\n        if (isTerminal) {\n          const terminalMap = matcher._attrValueMap;\n          let terminalValuesMap = terminalMap.get(name);\n          if (!terminalValuesMap) {\n            terminalValuesMap = new Map<string, SelectorContext<T>[]>();\n            terminalMap.set(name, terminalValuesMap);\n          }\n          this._addTerminal(terminalValuesMap, value, selectable);\n        } else {\n          const partialMap = matcher._attrValuePartialMap;\n          let partialValuesMap = partialMap.get(name);\n          if (!partialValuesMap) {\n            partialValuesMap = new Map<string, SelectorMatcher<T>>();\n            partialMap.set(name, partialValuesMap);\n          }\n          matcher = this._addPartial(partialValuesMap, value);\n        }\n      }\n    }\n  }\n\n  private _addTerminal(\n      map: Map<string, SelectorContext<T>[]>, name: string, selectable: SelectorContext<T>) {\n    let terminalList = map.get(name);\n    if (!terminalList) {\n      terminalList = [];\n      map.set(name, terminalList);\n    }\n    terminalList.push(selectable);\n  }\n\n  private _addPartial(map: Map<string, SelectorMatcher<T>>, name: string): SelectorMatcher<T> {\n    let matcher = map.get(name);\n    if (!matcher) {\n      matcher = new SelectorMatcher<T>();\n      map.set(name, matcher);\n    }\n    return matcher;\n  }\n\n  /**\n   * Find the objects that have been added via `addSelectable`\n   * whose css selector is contained in the given css selector.\n   * @param cssSelector A css selector\n   * @param matchedCallback This callback will be called with the object handed into `addSelectable`\n   * @return boolean true if a match was found\n   */\n  match(cssSelector: CssSelector, matchedCallback: ((c: CssSelector, a: T) => void)|null): boolean {\n    let result = false;\n    const element = cssSelector.element!;\n    const classNames = cssSelector.classNames;\n    const attrs = cssSelector.attrs;\n\n    for (let i = 0; i < this._listContexts.length; i++) {\n      this._listContexts[i].alreadyMatched = false;\n    }\n\n    result = this._matchTerminal(this._elementMap, element, cssSelector, matchedCallback) || result;\n    result = this._matchPartial(this._elementPartialMap, element, cssSelector, matchedCallback) ||\n        result;\n\n    if (classNames) {\n      for (let i = 0; i < classNames.length; i++) {\n        const className = classNames[i];\n        result =\n            this._matchTerminal(this._classMap, className, cssSelector, matchedCallback) || result;\n        result =\n            this._matchPartial(this._classPartialMap, className, cssSelector, matchedCallback) ||\n            result;\n      }\n    }\n\n    if (attrs) {\n      for (let i = 0; i < attrs.length; i += 2) {\n        const name = attrs[i];\n        const value = attrs[i + 1];\n\n        const terminalValuesMap = this._attrValueMap.get(name)!;\n        if (value) {\n          result =\n              this._matchTerminal(terminalValuesMap, '', cssSelector, matchedCallback) || result;\n        }\n        result =\n            this._matchTerminal(terminalValuesMap, value, cssSelector, matchedCallback) || result;\n\n        const partialValuesMap = this._attrValuePartialMap.get(name)!;\n        if (value) {\n          result = this._matchPartial(partialValuesMap, '', cssSelector, matchedCallback) || result;\n        }\n        result =\n            this._matchPartial(partialValuesMap, value, cssSelector, matchedCallback) || result;\n      }\n    }\n    return result;\n  }\n\n  /** @internal */\n  _matchTerminal(\n      map: Map<string, SelectorContext<T>[]>, name: string, cssSelector: CssSelector,\n      matchedCallback: ((c: CssSelector, a: any) => void)|null): boolean {\n    if (!map || typeof name !== 'string') {\n      return false;\n    }\n\n    let selectables: SelectorContext<T>[] = map.get(name) || [];\n    const starSelectables: SelectorContext<T>[] = map.get('*')!;\n    if (starSelectables) {\n      selectables = selectables.concat(starSelectables);\n    }\n    if (selectables.length === 0) {\n      return false;\n    }\n    let selectable: SelectorContext<T>;\n    let result = false;\n    for (let i = 0; i < selectables.length; i++) {\n      selectable = selectables[i];\n      result = selectable.finalize(cssSelector, matchedCallback) || result;\n    }\n    return result;\n  }\n\n  /** @internal */\n  _matchPartial(\n      map: Map<string, SelectorMatcher<T>>, name: string, cssSelector: CssSelector,\n      matchedCallback: ((c: CssSelector, a: any) => void)|null): boolean {\n    if (!map || typeof name !== 'string') {\n      return false;\n    }\n\n    const nestedSelector = map.get(name);\n    if (!nestedSelector) {\n      return false;\n    }\n    // TODO(perf): get rid of recursion and measure again\n    // TODO(perf): don't pass the whole selector into the recursion,\n    // but only the not processed parts\n    return nestedSelector.match(cssSelector, matchedCallback);\n  }\n}\n\n\nexport class SelectorListContext {\n  alreadyMatched: boolean = false;\n\n  constructor(public selectors: CssSelector[]) {}\n}\n\n// Store context to pass back selector and context when a selector is matched\nexport class SelectorContext<T = any> {\n  notSelectors: CssSelector[];\n\n  constructor(\n      public selector: CssSelector, public cbContext: T, public listContext: SelectorListContext) {\n    this.notSelectors = selector.notSelectors;\n  }\n\n  finalize(cssSelector: CssSelector, callback: ((c: CssSelector, a: T) => void)|null): boolean {\n    let result = true;\n    if (this.notSelectors.length > 0 && (!this.listContext || !this.listContext.alreadyMatched)) {\n      const notMatcher = SelectorMatcher.createNotMatcher(this.notSelectors);\n      result = !notMatcher.match(cssSelector, null);\n    }\n    if (result && callback && (!this.listContext || !this.listContext.alreadyMatched)) {\n      if (this.listContext) {\n        this.listContext.alreadyMatched = true;\n      }\n      callback(this.selector, this.cbContext);\n    }\n    return result;\n  }\n}\n"]}
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