#pragma once

#include "libsyntax_global.h"
#include <libwords.h>

namespace lib_token {

	/**
	 * @brief 解析异常
	 */
	class LIBSYNTAX_EXPORT TokenException {
	private:
		QString msg_store;

	public:
		TokenException(const QString& message);
		virtual QString message() const;
	};

	class IToken;
	/**
	 * @brief token解析机制定义
	 */
	class ITokenDefine {
	public:
		/**
		 * @brief 解析机制名称
		 * @return
		 */
		virtual QString reviseWords() const = 0;
		/**
		 * @brief 整数类型标识.
		 *
		 * \return
		 */
		virtual int typeMark() const = 0;
		/**
		 * @brief 解析机制关键定义
		 * @return
		 */
		virtual QString regex() const = 0;

		/**
		 * @brief 解析词语处理过程
		 * @param content 词语
		 * @return tuple<token/null,remains> 解析结果
		 */
		virtual std::tuple<std::shared_ptr<const IToken>, std::shared_ptr<const lib_words::IWordBase>>
			analysis(std::shared_ptr<const lib_words::IWordBase> content) const = 0;
	};


	/**
	 * @brief token解析结果
	 */
	class IToken : public lib_words::IWordBase {
	public:
		/**
		 * @brief token解析机制关联
		 * @return
		 */
		virtual std::shared_ptr<const ITokenDefine> define() const = 0;
	};
}