1.注冊URL，HHRoute中的“route”是沒有schem的，他的造型有兩種：

1."user/name/"

只有和1一毛一樣的才匹配成功

2."user/:name"

同時傳個目標控制器一個params{“name”：“xiaoming”},只要目標控制器實現一個setParams方法即可取出其中參數賦值

-(void)map:(NSString *)route toControllerClass:(Class)controllerClass;

注冊一個路徑地址和controller對應

-(void)map:(NSString *)route toBlock:(HHRouterBlock)block;

注冊一個路徑地址和block回調對應

使用詳解：

 1.[[HHRouter shared] map:@"/user/:userId/"
         toControllerClass:[UserViewController class]];
 2.[[HHRouter shared] map:@"/user/:userId/story/"
         toControllerClass:[StoryListViewController class]];
 3. [[HHRouter shared] map:@"/story/:storyId/"
         toControllerClass:[StoryViewController class]];

• [HHRouter shared]的單例中一個routes屬性的字典中維護了全局的url到controller或者block對應關系

• 根據route返回一個嵌套的字典，鍵是pathCompanent，值是字典，字典的鍵是下一個pathCompanent，最后一個字典的鍵是"_"，值是對應的controller或者block變量

調用1方法后routes里的保存情況

{"user"：
              {":userId":
                                {
                                    "_":[UserViewController class]
                                  }
            }
}

調用2方法后routes里的保存情況

{"user"：
              {":userId":
                                {
                                    "_":[UserViewController class]
                                    "story":
                                                  {
                                                        "_":[StoryListViewController class]
                                                  }
                                  }
            }
}

調用3方法后routes里的保存情況

{
  "user"：
              {":userId":
                                {
                                    "_":[UserViewController class]
                                    "story":
                                                  {
                                                        "_":[StoryListViewController class]
                                                  }
                                  }
            }
  "story":
                {
                    " :storyId":
                                      {
                                            "_":[StoryViewController class]
                                      }

                }
}

2.返回對應的controller和block

-(UIViewController *)matchController:(NSString *)route;
-(HHRouterBlock)matchBlock:(NSString *)route;

• route和url匹配邏輯

1. route中如果以"："開頭，將url中對應的pathComponent塞進params字典中作為傳參，校驗結果返回"YES"(found = YES)，另外url中"?a=1&b=2"也會塞進params中

2. 不以":"開頭，只有url中對應的pathComponent與route中對應的pathComponent一致時，校驗結果才返回"YES"(found = YES)

for (NSString *key in subRoutesKeys) {
            if ([subRoutesKeys containsObject:pathComponent]) {
                found = YES;
                subRoutes = subRoutes[pathComponent];
                break;
            } else if ([key hasPrefix:@":"]) {
                found = YES;
                subRoutes = subRoutes[key];
                params[[key substringFromIndex:1]] = pathComponent;
                break;
            }
        }

• params賦值

  • controller實現- (void)setParams:(NSDictionary *)paramsDictionary方法

  • block直接調用

-(id)callBlock:(NSString *)route
{
    NSDictionary *params = [self paramsInRoute:route];
    HHRouterBlock routerBlock = [params[@"block"] copy];

    if (routerBlock) {
        return routerBlock([params copy]);
    }
    return nil;
}