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#pragma once
#include <map>
#include "nodetype.h"
class Scope //作用是记录不同语句块内函数及变量名到实体的映射,不是运行时栈
{
private:
BasicNode* topASTNode=nullptr; //这是完全包含本域所有实体引用的根节点,否则会释放外部需要使用的实体
public:
~Scope();
map<string,Variable*> variableList;
map<string,Function*> functionList;
vector<Scope*> sonScope;
Scope* fatherScope; //因为可能顺着作用域向上层找变量,所以需要上级节点的指针
Scope(Scope* fatherScope=nullptr):fatherScope(fatherScope){}
Variable* addVariable(string name);
void addVariable(string name,Variable* var);
void addFunction(string name,Function* fun);
Variable* findVariable(string name, bool thisScope=false);
Function* findFunction(string name,bool thisScope=false);
//直接删除实体,在已经将所有实体引用在树中清空时使用(目前还没看到有什么用)
//void deleteVariable(string name);
//void deleteFunction(string name);
//删除实体指针在域中的存储,在已经将所有实体引用在树中清空时使用且已经delete时使用
void deleteVariable(Variable* var);
void deleteFunction(Function* fun);
void settopASTNode(BasicNode* topnode) {this->topASTNode=topnode;}
};
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