40 lines
917 B
C++
40 lines
917 B
C++
#pragma once
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#include <memory>
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#include <string>
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class env {
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public:
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virtual ~env() = default;
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virtual int get_offset(const std::string& name) const = 0;
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virtual bool has_variable(const std::string& name) const = 0;
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};
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using env_ptr = std::shared_ptr<env>;
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class env_var : public env {
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private:
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std::string name;
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env_ptr parent;
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public:
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env_var(std::string n, env_ptr p)
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: name(std::move(n)), parent(std::move(p)) {}
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int get_offset(const std::string& name) const;
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bool has_variable(const std::string& name) const;
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};
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class env_offset : public env {
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private:
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int offset;
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env_ptr parent;
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public:
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env_offset(int o, env_ptr p)
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: offset(o), parent(std::move(p)) {}
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int get_offset(const std::string& name) const;
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bool has_variable(const std::string& name) const;
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};
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