xeus-basic/libs/basic/include/basic.hpp

/**
 * SPDX-License-Identifier: Apache-2.0
 * SPDX-FileCopyrightText: 2021 Avinal Kumar <avinal.xlvii@gmail.com>
 *
 * @file	basic.hpp
 * @brief	Wrapper around basic
 */

#ifndef BASIC_BASIC_HPP_
#define BASIC_BASIC_HPP_

#include <string>
extern "C" {
#include "basic/parser.h"
}

class basic {
private:
  std::string last_error = "";
  static std::string output;
  static int out(int ch) {
    output.push_back(ch);
    return 1;
  }

  static int in() { return getchar(); }

public:
  basic();
  ~basic();
  bool evaluate_line(const std::string& line);
  std::string run();
  std::string get_error();
};

std::string basic::output = "";

basic::basic() {
  basic_init(1024 * 8, 2048);
  basic_register_io(out, in);
}

basic::~basic() { basic_destroy(); }

bool basic::evaluate_line(const std::string& line) {
  char* input = const_cast<char*>(line.c_str());
  basic_eval(input);
  if (evaluate_last_error()) {
    last_error.append(evaluate_last_error());
    clear_last_error();
    return false;
  }
  return true;
}

std::string basic::get_error() { return last_error; }

std::string basic::run() { return output; }

#endif  // BASIC_BASIC_HPP_