forked from NUDT-compiler/nudt-compiler-cpp
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26 lines
524 B
26 lines
524 B
// 维护对象符号的多层作用域。
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#pragma once
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#include <string>
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#include <string_view>
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#include <unordered_map>
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#include <vector>
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#include "sem/Sema.h"
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class SymbolTable {
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public:
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SymbolTable();
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void EnterScope();
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void ExitScope();
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bool Add(const ObjectBinding& symbol);
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bool ContainsInCurrentScope(std::string_view name) const;
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const ObjectBinding* Lookup(std::string_view name) const;
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size_t Depth() const;
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private:
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std::vector<std::unordered_map<std::string, ObjectBinding>> scopes_;
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};
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