# 01.纯Swift路由方案探究

前言

> `OC` 写了几年了到了新公司开始写`Swift` 项目正在成长期, 开始人也不多, 模块化程度不高 于是就整了这套路由方案 发现现在很多Swift路由方案很大程度上还是使用了`OC`的特性比如需要继承`NSObject` 作为一名`Swift`萌新, 这次路由方案的设计是很好的一次对`Swift`的探索

## 回顾历史 Objective-c

以往路由方案的核心主要是 `+Load注册` `反射` 等

### + Load

```swift
+ (void)Load {
    // 注册唯一标示 
}
```

### 反射

生成类

```swift
    Class myClass = NSClassFromString(@"DetailViewController")
```

方法调用

```swift
    SEL action = NSSelectorFromString(selectorName);

    if (![self respondsToSelector:action]) {
        return;
    }

    IMP imp = [self methodForSelector:action];
    void (*func)(id, SEL, id) = (void *)imp;
    func(self, action, data);
```

### 调度形式

```swift
 // Target-Action
 [self performTarget:@"ModuleA" action:@"Func" params:@{ @"name":@"OldWang" }]

 // URL
 [self open:@"demo://ModuleA/showDetail?id=100"]

 // ...
```

### 问题

* `Swift`中没有 `+Load`
* `Swift`包含命名空间, 反射较为麻烦, 且必须继承`NSObject`才能反射
* 硬编码多维护成本较高, 无法编译检查 

## RYRouter

![RouterUML02-2](http://ohfpqyfi7.bkt.clouddn.com/RouterUML02-2.jpg)


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