1.注册URL，HHRoute中的“route”是没有schem的，他的造型有两种：

1."user/name/"

只有和1一毛一样的才匹配成功

2."user/:name"

同时传个目标控制器一个params{“name”：“xiaoming”},只要目标控制器实现一个setParams方法即可取出其中参数赋值

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

注册一个路径地址和controller对应

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

注册一个路径地址和block回调对应

使用详解：

 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]的单例中一个routes属性的字典中维护了全局的url到controller或者block对应关系

• 根据route返回一个嵌套的字典，键是pathCompanent，值是字典，字典的键是下一个pathCompanent，最后一个字典的键是"_"，值是对应的controller或者block变量

调用1方法后routes里的保存情况

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

调用2方法后routes里的保存情况

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

调用3方法后routes里的保存情况

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

                }
}

2.返回对应的controller和block

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

• route和url匹配逻辑

1. route中如果以"："开头，将url中对应的pathComponent塞进params字典中作为传参，校验结果返回"YES"(found = YES)，另外url中"?a=1&b=2"也会塞进params中

2. 不以":"开头，只有url中对应的pathComponent与route中对应的pathComponent一致时，校验结果才返回"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赋值

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

  • block直接调用

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

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