A Hugo incarnation of the blog. https://danilafe.com
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

34 lines
799 B

#pragma once
#include <memory>
#include <string>
struct env {
virtual ~env() = default;
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;
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;
};
struct env_offset : public env {
int offset;
env_ptr parent;
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;
};