#pragma once

#include <string>
#include <unordered_map>

namespace L87 {
	class State;

	struct StateDiagram {
		::std::unordered_map<::std::string, State*> states;
		State* initial;
		virtual ~StateDiagram();
	};
}

namespace L87 {
	struct StateDiagram;

	class State {
	protected:
		StateDiagram* diagram;
		::std::unordered_map<::std::string, State*>& states;
		void auto_register();

	public:
		State(StateDiagram* _diagram);
		virtual bool done();
		virtual bool bad();

	public:
		// 具体状态必须实现
		virtual const char* name() = 0;
		virtual State* next(char input) = 0;
	};
}