async function typecheck_example_async()

in src/utils/ExampleTypechecker.php [18:72]

• 44 lines of code
• 5 McCabe index (conditional complexity)

async function typecheck_example_async(
  string $in_file,
): Awaitable<(string, string)> {
  $source_dir = \dirname($in_file);
  await using $tmp_dir = new TemporaryDirectory();
  await using $hh_tmp_dir = new TemporaryDirectory();
  $work_dir = $tmp_dir->getPath();

  \copy(
    $in_file,
    $work_dir.'/'.Str\strip_suffix(\basename($in_file), '.type-errors'),
  );

  $hhconfig = \file_exists($in_file.'.hhconfig')
    ? \file_get_contents($in_file.'.hhconfig')."\n"
    : '';
  if (
    !Str\contains($hhconfig, 'allowed_decl_fixme_codes') &&
    !Str\contains($hhconfig, 'allowed_fixme_codes_strict')
  ) {
    $hhconfig .= get_hhconfig_whitelists();
  }
  \file_put_contents($work_dir.'/.hhconfig', $hhconfig);

  foreach (\glob($source_dir.'/*.inc.php') as $include_file) {
    \copy($include_file, $work_dir.'/'.\basename($include_file));
  }

  $hh_server_path = get_hh_server_path();
  invariant($hh_server_path is nonnull, "Couldn't find hh_server");

  list($_exit_code, $stdout, $stderr) = await execute_async(
    shape(
      'environment' => dict[
        'HH_TMPDIR' => $hh_tmp_dir->getPath(),
        // HHVM_DISABLE_PERSONALITY: `hh_server` tries to disable ASLR via the
        // `personality()` syscall, which fails in Docker.
        'HHVM_DISABLE_PERSONALITY' => '1',
      ],
    ),
    $hh_server_path,
    '--check',
    '--max-procs=1',
    '--config',
    'extra_paths='.LocalConfig::ROOT.'/vendor/',
    '--config',
    // Composer generates .hack files in bin/ that are not hack; by default,
    // hack ignores them, but as we're pulling them in via `extra_paths`, we
    // need to explicitly ignore them
    'ignored_paths=[".*vendor/bin/.*"]',
    $work_dir,
  );

  return tuple($stdout, $stderr);
}