style(ir): 纠正代码位置
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@@ -1,16 +1,24 @@
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// 极简符号表:记录局部变量是否定义。
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// 极简符号表:记录局部变量定义点。
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#pragma once
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#include <string>
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#include <unordered_map>
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#include "SysYParser.h"
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class SymbolTable {
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public:
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void Add(const std::string& name) { table_[name] = true; }
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void Add(const std::string& name, SysYParser::VarDeclContext* decl) {
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table_[name] = decl;
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}
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bool Contains(const std::string& name) const {
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return table_.find(name) != table_.end();
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}
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SysYParser::VarDeclContext* Lookup(const std::string& name) const {
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auto it = table_.find(name);
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return it == table_.end() ? nullptr : it->second;
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}
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private:
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std::unordered_map<std::string, bool> table_;
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std::unordered_map<std::string, SysYParser::VarDeclContext*> table_;
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};
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