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{PromiseWrapper} from '../facade/async';\nimport {Map} from '../facade/collection';\nimport {BaseException} from '../facade/exceptions';\nimport {isBlank, isFunction, isPresent} from '../facade/lang';\nimport {ComponentInstruction} from '../instruction';\nimport {AsyncRoute, AuxRoute, Redirect, Route, RouteDefinition} from '../route_config/route_config_impl';\nimport {Url} from '../url_parser';\n\nimport {AsyncRouteHandler} from './route_handlers/async_route_handler';\nimport {SyncRouteHandler} from './route_handlers/sync_route_handler';\nimport {ParamRoutePath} from './route_paths/param_route_path';\nimport {RegexRoutePath} from './route_paths/regex_route_path';\nimport {RoutePath} from './route_paths/route_path';\nimport {AbstractRule, PathMatch, RedirectRule, RouteMatch, RouteRule} from './rules';\n\n\n\n/**\n * A `RuleSet` is responsible for recognizing routes for a particular component.\n * It is consumed by `RouteRegistry`, which knows how to recognize an entire hierarchy of\n * components.\n */\nexport class RuleSet {\n rulesByName = new Map<string, RouteRule>();\n\n // map from name to rule\n auxRulesByName = new Map<string, RouteRule>();\n\n // map from starting path to rule\n auxRulesByPath = new Map<string, RouteRule>();\n\n // TODO: optimize this into a trie\n rules: AbstractRule[] = [];\n\n // the rule to use automatically when recognizing or generating from this rule set\n defaultRule: RouteRule = null;\n\n /**\n * Configure additional rules in this rule set from a route definition\n * @returns {boolean} true if the config is terminal\n */\n config(config: RouteDefinition): boolean {\n let handler: any /** TODO #9100 */;\n\n if (isPresent(config.name) && config.name[0].toUpperCase() != config.name[0]) {\n let suggestedName = config.name[0].toUpperCase() + config.name.substring(1);\n throw new BaseException(\n `Route \"${config.path}\" with name \"${config.name}\" does not begin with an uppercase letter. Route names should be PascalCase like \"${suggestedName}\".`);\n }\n\n if (config instanceof AuxRoute) {\n handler = new SyncRouteHandler(config.component, config.data);\n let routePath = this._getRoutePath(config);\n let auxRule = new RouteRule(routePath, handler, config.name);\n this.auxRulesByPath.set(routePath.toString(), auxRule);\n if (isPresent(config.name)) {\n this.auxRulesByName.set(config.name, auxRule);\n }\n return auxRule.terminal;\n }\n\n let useAsDefault = false;\n\n if (config instanceof Redirect) {\n let routePath = this._getRoutePath(config);\n let redirector = new RedirectRule(routePath, config.redirectTo);\n this._assertNoHashCollision(redirector.hash, config.path);\n this.rules.push(redirector);\n return true;\n }\n\n if (config instanceof Route) {\n handler = new SyncRouteHandler(config.component, config.data);\n useAsDefault = isPresent(config.useAsDefault) && config.useAsDefault;\n } else if (config instanceof AsyncRoute) {\n handler = new AsyncRouteHandler(config.loader, config.data);\n useAsDefault = isPresent(config.useAsDefault) && config.useAsDefault;\n }\n let routePath = this._getRoutePath(config);\n let newRule = new RouteRule(routePath, handler, config.name);\n\n this._assertNoHashCollision(newRule.hash, config.path);\n\n if (useAsDefault) {\n if (isPresent(this.defaultRule)) {\n throw new BaseException(`Only one route can be default`);\n }\n this.defaultRule = newRule;\n }\n\n this.rules.push(newRule);\n if (isPresent(config.name)) {\n this.rulesByName.set(config.name, newRule);\n }\n return newRule.terminal;\n }\n\n\n /**\n * Given a URL, returns a list of `RouteMatch`es, which are partial recognitions for some route.\n */\n recognize(urlParse: Url): Promise<RouteMatch>[] {\n var solutions: any[] /** TODO #9100 */ = [];\n\n this.rules.forEach((routeRecognizer: AbstractRule) => {\n var pathMatch = routeRecognizer.recognize(urlParse);\n\n if (isPresent(pathMatch)) {\n solutions.push(pathMatch);\n }\n });\n\n // handle cases where we are routing just to an aux route\n if (solutions.length == 0 && isPresent(urlParse) && urlParse.auxiliary.length > 0) {\n return [PromiseWrapper.resolve(new PathMatch(null, null, urlParse.auxiliary))];\n }\n\n return solutions;\n }\n\n recognizeAuxiliary(urlParse: Url): Promise<RouteMatch>[] {\n var routeRecognizer: RouteRule = this.auxRulesByPath.get(urlParse.path);\n if (isPresent(routeRecognizer)) {\n return [routeRecognizer.recognize(urlParse)];\n }\n\n return [PromiseWrapper.resolve(null)];\n }\n\n hasRoute(name: string): boolean { return this.rulesByName.has(name); }\n\n componentLoaded(name: string): boolean {\n return this.hasRoute(name) && isPresent(this.rulesByName.get(name).handler.componentType);\n }\n\n loadComponent(name: string): Promise<any> {\n return this.rulesByName.get(name).handler.resolveComponentType();\n }\n\n generate(name: string, params: any): ComponentInstruction {\n var rule: RouteRule = this.rulesByName.get(name);\n if (isBlank(rule)) {\n return null;\n }\n return rule.generate(params);\n }\n\n generateAuxiliary(name: string, params: any): ComponentInstruction {\n var rule: RouteRule = this.auxRulesByName.get(name);\n if (isBlank(rule)) {\n return null;\n }\n return rule.generate(params);\n }\n\n private _assertNoHashCollision(hash: string, path: any /** TODO #9100 */) {\n this.rules.forEach((rule) => {\n if (hash == rule.hash) {\n throw new BaseException(\n `Configuration '${path}' conflicts with existing route '${rule.path}'`);\n }\n });\n }\n\n private _getRoutePath(config: RouteDefinition): RoutePath {\n if (isPresent(config.regex)) {\n if (isFunction(config.serializer)) {\n return new RegexRoutePath(config.regex, config.serializer, config.regex_group_names);\n } else {\n throw new BaseException(\n `Route provides a regex property, '${config.regex}', but no serializer property`);\n }\n }\n if (isPresent(config.path)) {\n // Auxiliary routes do not have a slash at the start\n let path = (config instanceof AuxRoute && config.path.startsWith('/')) ?\n config.path.substring(1) :\n config.path;\n return new ParamRoutePath(path);\n }\n throw new BaseException('Route must provide either a path or regex property');\n }\n}\n"]} |