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joko/lib/VM.hpp

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2023-09-09 22:03:28 +00:00
#ifndef jk_VM_HPP
#define jk_VM_HPP
#include "commons.hpp"
#include "Program.hpp"
namespace jk
{
struct Frame {
std::shared_ptr<Program> program;
std::unordered_map<int, std::shared_ptr<Value>> locals;
size_t ret_addr;
size_t stack_sz;
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};
class VM
{
public:
explicit VM();
virtual ~VM();
void execute(std::shared_ptr<Program> program);
void execute();
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std::string string() const;
size_t push_heap(std::shared_ptr<Value> value);
std::shared_ptr<Value> heap(size_t addr);
void set_global(size_t addr, std::shared_ptr<Value> value);
private:
size_t m_pc = 0;
std::vector<Frame> m_frames;
std::vector<param_t> m_stack;
std::vector<std::shared_ptr<Value>> m_heap;
std::unordered_map<size_t, std::shared_ptr<Value>> m_globals;
void push(param_t param);
param_t pop();
std::shared_ptr<Program> program() const;
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};
}
#endif