107 lines
2.1 KiB
C++
107 lines
2.1 KiB
C++
#pragma once
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#include "libsyntax_global.h"
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#include <libwords.h>
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namespace ast_basic {
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class IExprInstance;
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}
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namespace lib_token {
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/**
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* @brief 解析异常
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*/
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class LIBSYNTAX_EXPORT TokenException {
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private:
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QString msg_store;
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public:
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TokenException(const QString& message);
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virtual QString message() const;
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};
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// token 解析机制抽象接口==========================================
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/**
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* @brief token类型定义
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*/
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class ITokenDefine {
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public:
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/**
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* @brief 整数类型标识.
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*
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* \return
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*/
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virtual int typeMark() const = 0;
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/**
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* @brief 解析机制关键定义
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* @return
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*/
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virtual QString regex() const = 0;
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};
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/**
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* @brief token解析结果
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*/
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class IToken : public lib_words::IWordBase, public std::enable_shared_from_this<IToken> {
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public:
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/**
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* @brief token解析机制关联
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* @return
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*/
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virtual std::shared_ptr<const ITokenDefine> defines() const = 0;
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};
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// 拓展基础接口=========================
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/**
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* @brief token解析机制定义
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*/
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class ITokenProcess : public ITokenDefine {
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public:
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/**
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* @brief 解析机制名称
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* @return
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*/
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virtual QString reviseWords() const = 0;
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/**
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* @brief 解析词语处理过程
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* @param content 词语
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* @return tuple<token/null,remains> 解析结果
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*/
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virtual std::tuple<std::shared_ptr<const IToken>, std::shared_ptr<const lib_words::IPrimitiveWord>>
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analysis(std::shared_ptr<const lib_words::IPrimitiveWord> content) const = 0;
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};
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/**
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* @brief 动作Token
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*/
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class IActionToken : public lib_token::IToken {
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public:
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enum class Type { ElementBegin, TokenBind, ElementEnd };
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/**
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* @brief 获取ActionToken类型.
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*
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* \return
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*/
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virtual Type tokenType() const = 0;
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/**
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* @brief 上一个Token
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* @return
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*/
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virtual std::shared_ptr<const IActionToken> prevToken() const = 0;
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/**
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* @brief 落实本Token内容到指定expr，返回完善状态后的expr
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* @param expr 目标表达式实例
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* @return 完善后的表达式
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*/
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virtual std::shared_ptr<ast_basic::IExprInstance> makeSure(std::shared_ptr<ast_basic::IExprInstance> expr) = 0;
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};
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} |