public async function readByteAsync()

in src/io/BufferedReader.php [255:275]

• 21 lines of code
• 6 McCabe index (conditional complexity)

  public async function readByteAsync(
    ?int $timeout_ns = null,
  ): Awaitable<string> {
    _OS\arg_assert(
      $timeout_ns is null || $timeout_ns > 0,
      "Timeout must be null, or greater than 0",
    );
    if ($this->buffer === '' && !$this->eof) {
      await $this->fillBufferAsync(null, $timeout_ns);
    }
    if ($this->buffer === '') {
      _OS\throw_errno(OS\Errno::EPIPE, "Reached EOF without any more data");
    }
    $ret = $this->buffer[0];
    if ($ret === $this->buffer) {
      $this->buffer = '';
      return $ret;
    }
    $this->buffer = Str\slice($this->buffer, 1);
    return $ret;
  }