main.cpp

#define DOCTEST_CONFIG_IMPLEMENT
#include <doctest/doctest.h>

#include <fstream>
#include <iostream>

#include "compiler.h"
#include "scanner.h"
#include "vm.h"

namespace lox {

inline void repl() noexcept {
  while (true) {
    std::cout << "> ";
    std::string source;
    std::getline(std::cin, source);
    VM{std::cout}.interpret(std::move(source));
  }
}

inline void run_file(const std::string &filepath) {
  std::ifstream ifs(filepath);
  VM{std::cout}.interpret(std::string{std::istreambuf_iterator<char>{ifs},
                                      std::istreambuf_iterator<char>{}});
}

inline int main(int argc, char *argv[]) noexcept {
  if (argc == 1) {
    repl();
  } else if (argc == 2) {
    run_file(argv[1]);
  } else {
    fprintf(stderr, "Usage: lox [path]\n");
  }
  return 0;
}

}  // namespace lox

int main(int argc, char *argv[]) {
#ifdef NDEBUG
  lox::main(argc, argv);
#else
  doctest::Context context;
  context.applyCommandLine(argc, argv);

  int res = context.run();
  if (context.shouldExit()) {
    return res;
  }

  if (argc > 1) {
    lox::run_file(argv[argc - 1]);
  }
  return res;
#endif
}