cpp-cli/include/cli/tape.h

//
//  tape.hpp
//  cli
//
//  Created by Sam Jaffe on 7/23/24.
//  Copyright © 2024 Sam Jaffe. All rights reserved.
//

#pragma once

#include <cstdint>
#include <string>
#include <vector>

namespace cli {
struct Tape {
public:
  using callback_type = std::function<void(std::string)>;
  using value_type = std::string;
  using char_type = char;
  
private:
  size_t negative_offset_{0};
  size_t cursor_offset_{0};
  std::vector<value_type> elements_{""};
  callback_type callback_;

public:
  explicit Tape(callback_type const &callback) : Tape(1, callback) {}
  Tape(size_t n, callback_type const &callback);
    
  value_type const &get() const;
  
  void readch();
  
private:
  value_type &get();
  
  void down();
  void up();
  void left();
  void right();
  
  void insert(char_type value);
  void erase();
  void clear();
};

}