c++ - 我怎样才能改进这个 C++ 代码

Question

我需要您对以下伪代码的建议。请建议我如何改进它，是否可以使用一些设计模式。

// i'm receiving a string containing : id operation arguments
data    = read(socket);
tokens  = tokenize(data," "); // tokenize the string based on spaces
if(tokens[0] == "A") {
   if(tokens[1] == "some_operation") {
      // here goes code for some_operation , will use the remaining tokens as arguments for function calls
   }
   else if(tokens[1] == "some_other_operation") {
     // here goes code for some_other_operation , will use the remaining tokens
   }
   ...
   else {
     // unknown operation
   }
}
else if(tokens[0] == "B") {
   if(tokens[1] == "some_operation_for_B") {
     // do some operation for B
   }
   else if(tokens[1] == "yet_another_operation") {
     // do yet_another_operation for B
   }
   ...
   else {
     // unknown operation
   } 
}

我希望你明白我的意思。问题是我有大量的 id's 并且每个都有自己的 operations ，我认为有 10 屏代码包含很多 有点难看如果是 和else 如果是。

Answer 1

每个 ID 都有一个实现公共(public)接口(interface)的类。基本上是 Strategy pattern IIRC.

所以你会像这样调用(伪)代码:

StrategyFactory.GetStrategy(tokens[0]).parse(tokens[1..n])