111 lines
3.4 KiB
C++
111 lines
3.4 KiB
C++
#pragma once
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#include <memory>
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#include <QList>
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#include <libtoken.h>
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#include "libsyntax.h"
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namespace ast_basic {
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// 抽象语法树 ================================================================================================
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/**
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* @brief 抽象语法树节点/叶节点/词法节点
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*/
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class TokenNode {
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public:
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/**
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* @brief 获取文件路径
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* @return
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*/
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virtual QString filePath() const = 0;
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/**
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* @brief 是否属于叶子节点
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* @return
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*/
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virtual bool isLeaf() const = 0;
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/**
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* @brief 获取节点定义包含Token集合
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* @return
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*/
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virtual QList<std::shared_ptr<const lib_token::Token>> tokens() const = 0;
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/**
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* @brief 重置节点内子节点
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* @param tokens
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* @return
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*/
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virtual std::shared_ptr<const TokenNode> filledWith(const QList<std::shared_ptr<const TokenNode>>& child_nodes) const = 0;
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};
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/**
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* @brief 抽象语法树集合节点/表达式节点
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*/
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class ExprNode : public TokenNode {
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public:
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/**
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* @brief 表达式定义规则
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* @return
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*/
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virtual std::shared_ptr<const lib_syntax::ExprRule> defined() const = 0;
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/**
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* @brief 直接子表达式集合
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* @return
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*/
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virtual QList<std::shared_ptr<const ExprNode>> exprNodes() const = 0;
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/**
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* @brief 获取TokenNode，以直接子元素计算
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* @param index 起始元素索引 0起始
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* @param length 长度
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* @return
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*/
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virtual QList<std::shared_ptr<const TokenNode>> childTokensMid(int index, int length = 1) const = 0;
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};
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// 基础语法树构成 ==========================================================================================
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/**
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* @brief 词法定义节点
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*/
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class LIBSYNTAX_EXPORT TokenNodeImpl : public ast_basic::TokenNode {
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private:
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std::shared_ptr<const lib_token::Token> word_store;
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public:
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TokenNodeImpl(std::shared_ptr<const lib_token::Token> word);
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// TokenNode interface
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public:
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virtual QString filePath() const override;
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virtual bool isLeaf() const override;
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virtual QList<std::shared_ptr<const lib_token::Token>> tokens() const override;
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virtual std::shared_ptr<const TokenNode> filledWith(const QList<std::shared_ptr<const TokenNode> >& tokens) const override;
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};
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/**
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* @brief 表达式节点
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*/
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class LIBSYNTAX_EXPORT ExprNodeImpl : public ast_basic::ExprNode {
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private:
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std::shared_ptr<const lib_syntax::ExprRule> _expr_rule;
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QList<std::shared_ptr<const TokenNode>> children_store;
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public:
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ExprNodeImpl(std::shared_ptr<const lib_syntax::ExprRule> bind);
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// TokenNode interface
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public:
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virtual QString filePath() const override;
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virtual bool isLeaf() const override;
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virtual QList<std::shared_ptr<const lib_token::Token>> tokens() const override;
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virtual std::shared_ptr<const TokenNode> filledWith(const QList<std::shared_ptr<const TokenNode> >& child_nodes) const override;
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// ExprNode interface
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public:
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virtual std::shared_ptr<const lib_syntax::ExprRule> defined() const override;
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virtual QList<std::shared_ptr<const ExprNode>> exprNodes() const override;
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virtual QList<std::shared_ptr<const TokenNode> > childTokensMid(int index, int length) const override;
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};
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} |