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Make env a class.

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This commit is contained in:
Danila Fedorin 2020-09-15 19:12:12 -07:00
parent 8b897c9636
commit 3fbca52845
1 changed files with 23 additions and 18 deletions
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41
13/env.hpp
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@ -2,33 +2,38 @@
#include <memory>
#include <string>
struct env {
virtual ~env() = default;
class env {
public:
virtual ~env() = default;
virtual int get_offset(const std::string& name) const = 0;
virtual bool has_variable(const std::string& name) const = 0;
virtual int get_offset(const std::string& name) const = 0;
virtual bool has_variable(const std::string& name) const = 0;
};
using env_ptr = std::shared_ptr<env>;
struct env_var : public env {
std::string name;
env_ptr parent;
class env_var : public env {
private:
std::string name;
env_ptr parent;
env_var(std::string n, env_ptr p)
: name(std::move(n)), parent(std::move(p)) {}
public:
env_var(std::string n, env_ptr p)
: name(std::move(n)), parent(std::move(p)) {}
int get_offset(const std::string& name) const;
bool has_variable(const std::string& name) const;
int get_offset(const std::string& name) const;
bool has_variable(const std::string& name) const;
};
struct env_offset : public env {
int offset;
env_ptr parent;
class env_offset : public env {
private:
int offset;
env_ptr parent;
env_offset(int o, env_ptr p)
: offset(o), parent(std::move(p)) {}
public:
env_offset(int o, env_ptr p)
: offset(o), parent(std::move(p)) {}
int get_offset(const std::string& name) const;
bool has_variable(const std::string& name) const;
int get_offset(const std::string& name) const;
bool has_variable(const std::string& name) const;
};