protected abstract static function createFromLines()

in src/unparsed-blocks/FencedBlock.php [15:66]

• 43 lines of code
• 7 McCabe index (conditional complexity)

  protected abstract static function createFromLines(
    vec<string> $lines,
    int $indentation_of_first,
    bool $eof,
  ): this;

  protected abstract static function getEndPatternForFirstLine(
    Context $context,
    int $column,
    string $first,
  ): ?string;

  public static function consume(
    Context $context,
    Lines $lines,
  ): ?(this, Lines) {
    list($indentation, $first, $rest) = $lines->getColumnFirstLineAndRest();
    $end = static::getEndPatternForFirstLine($context, $indentation, $first);
    if ($end === null) {
      return null;
    }

    $matched = vec[$first];

    if (
      \is_a(static::class, HTMLBlock::class, true)
      && \preg_match($end, $first) === 1
    ) {
      // Keyed specifically to HTMLBlock as the behavior for the rest of the
      // line feels a bit strange
      return tuple(
        static::createFromLines($matched, $indentation, false),
        $rest,
      );
    }

    $eof = true;

    while (!$rest->isEmpty()) {
      list($line, $rest) = $rest->getFirstLineAndRest();
      $matched[] = $line;
      if (\preg_match($end, $line) === 1) {
        $eof = false;
        break;
      }
    }

    return tuple(
      static::createFromLines($matched, $indentation, $eof),
      $rest,
    );
  }