74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
#pragma once
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#include "libparse_global.h"
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#include <ast_basic.h>
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#include <ast_gen.h>
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namespace lib_parse {
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/**
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* @brief 检查机制异常
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*/
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class LIBPARSE_EXPORT CheckException {
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private:
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QString msg_store;
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public:
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CheckException(const QString& msg);
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virtual ~CheckException() = default;
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virtual QString message() const;
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};
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/**
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* @brief 校验机制提供类型
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*/
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class CheckProvider {
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public:
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virtual QString name() const = 0;
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virtual void validCheck(std::shared_ptr<const ast_gen::ElementAccess> root) const = 0;
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};
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/**
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* @brief 解析器对外接口
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*/
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class LIBPARSE_EXPORT Analyzer {
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private:
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QList<std::shared_ptr<const CheckProvider>> check_providers;
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public:
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Analyzer(const QList<std::shared_ptr<const CheckProvider>>& providers);
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std::shared_ptr<const ast_gen::ElementAccess> validCheckWith(std::shared_ptr<const ast_gen::ElementAccess> root) const;
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};
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enum class VisitMode {
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FirstParent, // 先序遍历
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LastParent, // 后序遍历
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};
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class TreeVisitor {
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public:
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/**
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* 获取访问器的遍历模式.
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*
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* \return
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*/
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virtual VisitMode mode() const = 0;
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/**
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* 对语法树执行节点遍历.
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*
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* \param syntax_element 当前访问节点
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* \return 是否继续执行遍历
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*/
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virtual bool visit(std::shared_ptr<const ast_gen::ElementAccess> syntax_element) = 0;
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};
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class LIBPARSE_EXPORT VisitorControl {
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public:
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bool visitWith(std::shared_ptr<const ast_gen::ElementAccess> syntax_elm, std::shared_ptr<TreeVisitor> visitor);
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};
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}
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