/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ (function (factory) { if (typeof module === "object" && typeof module.exports === "object") { var v = factory(require, exports); if (v !== undefined) module.exports = v; } else if (typeof define === "function" && define.amd) { define("@angular/compiler/src/selector", ["require", "exports", "@angular/compiler/src/ml_parser/html_tags"], factory); } })(function (require, exports) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.SelectorContext = exports.SelectorListContext = exports.SelectorMatcher = exports.CssSelector = void 0; var html_tags_1 = require("@angular/compiler/src/ml_parser/html_tags"); var _SELECTOR_REGEXP = new RegExp('(\\:not\\()|' + // 1: ":not(" '(([\\.\\#]?)[-\\w]+)|' + // 2: "tag"; 3: "."/"#"; // "-" should appear first in the regexp below as FF31 parses "[.-\w]" as a range // 4: attribute; 5: attribute_string; 6: attribute_value '(?:\\[([-.\\w*\\\\$]+)(?:=([\"\']?)([^\\]\"\']*)\\5)?\\])|' + // "[name]", "[name=value]", // "[name="value"]", // "[name='value']" '(\\))|' + // 7: ")" '(\\s*,\\s*)', // 8: "," 'g'); /** * A css selector contains an element name, * css classes and attribute/value pairs with the purpose * of selecting subsets out of them. */ var CssSelector = /** @class */ (function () { function CssSelector() { this.element = null; this.classNames = []; /** * The selectors are encoded in pairs where: * - even locations are attribute names * - odd locations are attribute values. * * Example: * Selector: `[key1=value1][key2]` would parse to: * ``` * ['key1', 'value1', 'key2', ''] * ``` */ this.attrs = []; this.notSelectors = []; } CssSelector.parse = function (selector) { var results = []; var _addResult = function (res, cssSel) { if (cssSel.notSelectors.length > 0 && !cssSel.element && cssSel.classNames.length == 0 && cssSel.attrs.length == 0) { cssSel.element = '*'; } res.push(cssSel); }; var cssSelector = new CssSelector(); var match; var current = cssSelector; var inNot = false; _SELECTOR_REGEXP.lastIndex = 0; while (match = _SELECTOR_REGEXP.exec(selector)) { if (match[1 /* NOT */]) { if (inNot) { throw new Error('Nesting :not in a selector is not allowed'); } inNot = true; current = new CssSelector(); cssSelector.notSelectors.push(current); } var tag = match[2 /* TAG */]; if (tag) { var prefix = match[3 /* PREFIX */]; if (prefix === '#') { // #hash current.addAttribute('id', tag.substr(1)); } else if (prefix === '.') { // Class current.addClassName(tag.substr(1)); } else { // Element current.setElement(tag); } } var attribute = match[4 /* ATTRIBUTE */]; if (attribute) { current.addAttribute(current.unescapeAttribute(attribute), match[6 /* ATTRIBUTE_VALUE */]); } if (match[7 /* NOT_END */]) { inNot = false; current = cssSelector; } if (match[8 /* SEPARATOR */]) { if (inNot) { throw new Error('Multiple selectors in :not are not supported'); } _addResult(results, cssSelector); cssSelector = current = new CssSelector(); } } _addResult(results, cssSelector); return results; }; /** * Unescape `\$` sequences from the CSS attribute selector. * * This is needed because `$` can have a special meaning in CSS selectors, * but we might want to match an attribute that contains `$`. * [MDN web link for more * info](https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors). * @param attr the attribute to unescape. * @returns the unescaped string. */ CssSelector.prototype.unescapeAttribute = function (attr) { var result = ''; var escaping = false; for (var i = 0; i < attr.length; i++) { var char = attr.charAt(i); if (char === '\\') { escaping = true; continue; } if (char === '$' && !escaping) { throw new Error("Error in attribute selector \"" + attr + "\". " + "Unescaped \"$\" is not supported. Please escape with \"\\$\"."); } escaping = false; result += char; } return result; }; /** * Escape `$` sequences from the CSS attribute selector. * * This is needed because `$` can have a special meaning in CSS selectors, * with this method we are escaping `$` with `\$'. * [MDN web link for more * info](https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors). * @param attr the attribute to escape. * @returns the escaped string. */ CssSelector.prototype.escapeAttribute = function (attr) { return attr.replace(/\\/g, '\\\\').replace(/\$/g, '\\$'); }; CssSelector.prototype.isElementSelector = function () { return this.hasElementSelector() && this.classNames.length == 0 && this.attrs.length == 0 && this.notSelectors.length === 0; }; CssSelector.prototype.hasElementSelector = function () { return !!this.element; }; CssSelector.prototype.setElement = function (element) { if (element === void 0) { element = null; } this.element = element; }; /** Gets a template string for an element that matches the selector. */ CssSelector.prototype.getMatchingElementTemplate = function () { var tagName = this.element || 'div'; var classAttr = this.classNames.length > 0 ? " class=\"" + this.classNames.join(' ') + "\"" : ''; var attrs = ''; for (var i = 0; i < this.attrs.length; i += 2) { var attrName = this.attrs[i]; var attrValue = this.attrs[i + 1] !== '' ? "=\"" + this.attrs[i + 1] + "\"" : ''; attrs += " " + attrName + attrValue; } return html_tags_1.getHtmlTagDefinition(tagName).isVoid ? "<" + tagName + classAttr + attrs + "/>" : "<" + tagName + classAttr + attrs + ">"; }; CssSelector.prototype.getAttrs = function () { var result = []; if (this.classNames.length > 0) { result.push('class', this.classNames.join(' ')); } return result.concat(this.attrs); }; CssSelector.prototype.addAttribute = function (name, value) { if (value === void 0) { value = ''; } this.attrs.push(name, value && value.toLowerCase() || ''); }; CssSelector.prototype.addClassName = function (name) { this.classNames.push(name.toLowerCase()); }; CssSelector.prototype.toString = function () { var res = this.element || ''; if (this.classNames) { this.classNames.forEach(function (klass) { return res += "." + klass; }); } if (this.attrs) { for (var i = 0; i < this.attrs.length; i += 2) { var name_1 = this.escapeAttribute(this.attrs[i]); var value = this.attrs[i + 1]; res += "[" + name_1 + (value ? '=' + value : '') + "]"; } } this.notSelectors.forEach(function (notSelector) { return res += ":not(" + notSelector + ")"; }); return res; }; return CssSelector; }()); exports.CssSelector = CssSelector; /** * Reads a list of CssSelectors and allows to calculate which ones * are contained in a given CssSelector. */ var SelectorMatcher = /** @class */ (function () { function SelectorMatcher() { this._elementMap = new Map(); this._elementPartialMap = new Map(); this._classMap = new Map(); this._classPartialMap = new Map(); this._attrValueMap = new Map(); this._attrValuePartialMap = new Map(); this._listContexts = []; } SelectorMatcher.createNotMatcher = function (notSelectors) { var notMatcher = new SelectorMatcher(); notMatcher.addSelectables(notSelectors, null); return notMatcher; }; SelectorMatcher.prototype.addSelectables = function (cssSelectors, callbackCtxt) { var listContext = null; if (cssSelectors.length > 1) { listContext = new SelectorListContext(cssSelectors); this._listContexts.push(listContext); } for (var i = 0; i < cssSelectors.length; i++) { this._addSelectable(cssSelectors[i], callbackCtxt, listContext); } }; /** * Add an object that can be found later on by calling `match`. * @param cssSelector A css selector * @param callbackCtxt An opaque object that will be given to the callback of the `match` function */ SelectorMatcher.prototype._addSelectable = function (cssSelector, callbackCtxt, listContext) { var matcher = this; var element = cssSelector.element; var classNames = cssSelector.classNames; var attrs = cssSelector.attrs; var selectable = new SelectorContext(cssSelector, callbackCtxt, listContext); if (element) { var isTerminal = attrs.length === 0 && classNames.length === 0; if (isTerminal) { this._addTerminal(matcher._elementMap, element, selectable); } else { matcher = this._addPartial(matcher._elementPartialMap, element); } } if (classNames) { for (var i = 0; i < classNames.length; i++) { var isTerminal = attrs.length === 0 && i === classNames.length - 1; var className = classNames[i]; if (isTerminal) { this._addTerminal(matcher._classMap, className, selectable); } else { matcher = this._addPartial(matcher._classPartialMap, className); } } } if (attrs) { for (var i = 0; i < attrs.length; i += 2) { var isTerminal = i === attrs.length - 2; var name_2 = attrs[i]; var value = attrs[i + 1]; if (isTerminal) { var terminalMap = matcher._attrValueMap; var terminalValuesMap = terminalMap.get(name_2); if (!terminalValuesMap) { terminalValuesMap = new Map(); terminalMap.set(name_2, terminalValuesMap); } this._addTerminal(terminalValuesMap, value, selectable); } else { var partialMap = matcher._attrValuePartialMap; var partialValuesMap = partialMap.get(name_2); if (!partialValuesMap) { partialValuesMap = new Map(); partialMap.set(name_2, partialValuesMap); } matcher = this._addPartial(partialValuesMap, value); } } } }; SelectorMatcher.prototype._addTerminal = function (map, name, selectable) { var terminalList = map.get(name); if (!terminalList) { terminalList = []; map.set(name, terminalList); } terminalList.push(selectable); }; SelectorMatcher.prototype._addPartial = function (map, name) { var matcher = map.get(name); if (!matcher) { matcher = new SelectorMatcher(); map.set(name, matcher); } return matcher; }; /** * Find the objects that have been added via `addSelectable` * whose css selector is contained in the given css selector. * @param cssSelector A css selector * @param matchedCallback This callback will be called with the object handed into `addSelectable` * @return boolean true if a match was found */ SelectorMatcher.prototype.match = function (cssSelector, matchedCallback) { var result = false; var element = cssSelector.element; var classNames = cssSelector.classNames; var attrs = cssSelector.attrs; for (var i = 0; i < this._listContexts.length; i++) { this._listContexts[i].alreadyMatched = false; } result = this._matchTerminal(this._elementMap, element, cssSelector, matchedCallback) || result; result = this._matchPartial(this._elementPartialMap, element, cssSelector, matchedCallback) || result; if (classNames) { for (var i = 0; i < classNames.length; i++) { var className = classNames[i]; result = this._matchTerminal(this._classMap, className, cssSelector, matchedCallback) || result; result = this._matchPartial(this._classPartialMap, className, cssSelector, matchedCallback) || result; } } if (attrs) { for (var i = 0; i < attrs.length; i += 2) { var name_3 = attrs[i]; var value = attrs[i + 1]; var terminalValuesMap = this._attrValueMap.get(name_3); if (value) { result = this._matchTerminal(terminalValuesMap, '', cssSelector, matchedCallback) || result; } result = this._matchTerminal(terminalValuesMap, value, cssSelector, matchedCallback) || result; var partialValuesMap = this._attrValuePartialMap.get(name_3); if (value) { result = this._matchPartial(partialValuesMap, '', cssSelector, matchedCallback) || result; } result = this._matchPartial(partialValuesMap, value, cssSelector, matchedCallback) || result; } } return result; }; /** @internal */ SelectorMatcher.prototype._matchTerminal = function (map, name, cssSelector, matchedCallback) { if (!map || typeof name !== 'string') { return false; } var selectables = map.get(name) || []; var starSelectables = map.get('*'); if (starSelectables) { selectables = selectables.concat(starSelectables); } if (selectables.length === 0) { return false; } var selectable; var result = false; for (var i = 0; i < selectables.length; i++) { selectable = selectables[i]; result = selectable.finalize(cssSelector, matchedCallback) || result; } return result; }; /** @internal */ SelectorMatcher.prototype._matchPartial = function (map, name, cssSelector, matchedCallback) { if (!map || typeof name !== 'string') { return false; } var nestedSelector = map.get(name); if (!nestedSelector) { return false; } // TODO(perf): get rid of recursion and measure again // TODO(perf): don't pass the whole selector into the recursion, // but only the not processed parts return nestedSelector.match(cssSelector, matchedCallback); }; return SelectorMatcher; }()); exports.SelectorMatcher = SelectorMatcher; var SelectorListContext = /** @class */ (function () { function SelectorListContext(selectors) { this.selectors = selectors; this.alreadyMatched = false; } return SelectorListContext; }()); exports.SelectorListContext = SelectorListContext; // Store context to pass back selector and context when a selector is matched var SelectorContext = /** @class */ (function () { function SelectorContext(selector, cbContext, listContext) { this.selector = selector; this.cbContext = cbContext; this.listContext = listContext; this.notSelectors = selector.notSelectors; } SelectorContext.prototype.finalize = function (cssSelector, callback) { var result = true; if (this.notSelectors.length > 0 && (!this.listContext || !this.listContext.alreadyMatched)) { var notMatcher = SelectorMatcher.createNotMatcher(this.notSelectors); result = !notMatcher.match(cssSelector, null); } if (result && callback && (!this.listContext || !this.listContext.alreadyMatched)) { if (this.listContext) { this.listContext.alreadyMatched = true; } callback(this.selector, this.cbContext); } return result; }; return SelectorContext; }()); exports.SelectorContext = SelectorContext; }); //# 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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"]}