Command Parser
在执行命令之前，我们需要解析命令以及用户可能提供的任何选项。解析位于命令注册和命令执行之间。
Before a command can be executed, we need to parse the command and whatever options the user may have provided. Parsing comes between command registration and command execution.
在执行命令之前，我们需要解析命令以及用户可能提供的任何选项。解析位于命令注册和命令执行之间。
Before a command can be executed, we need to parse the command and whatever options the user may have provided. Parsing comes between command registration and command execution.