mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? paragraph(
    1. InputRichBlockParagraph value
    )?,
  2. TResult? heading(
    1. InputRichBlockSectionHeading value
    )?,
  3. TResult? pre(
    1. InputRichBlockPreformatted value
    )?,
  4. TResult? footer(
    1. InputRichBlockFooter value
    )?,
  5. TResult? divider(
    1. InputRichBlockDivider value
    )?,
  6. TResult? mathematicalExpression(
    1. InputRichBlockMathematicalExpression value
    )?,
  7. TResult? anchor(
    1. InputRichBlockAnchor value
    )?,
  8. TResult? list(
    1. InputRichBlockList value
    )?,
  9. TResult? blockquote(
    1. InputRichBlockBlockQuotation value
    )?,
  10. TResult? pullquote(
    1. InputRichBlockPullQuotation value
    )?,
  11. TResult? collage(
    1. InputRichBlockCollage value
    )?,
  12. TResult? slideshow(
    1. InputRichBlockSlideshow value
    )?,
  13. TResult? table(
    1. InputRichBlockTable value
    )?,
  14. TResult? details(
    1. InputRichBlockDetails value
    )?,
  15. TResult? map(
    1. InputRichBlockMap value
    )?,
  16. TResult? animation(
    1. InputRichBlockAnimation value
    )?,
  17. TResult? audio(
    1. InputRichBlockAudio value
    )?,
  18. TResult? photo(
    1. InputRichBlockPhoto value
    )?,
  19. TResult? video(
    1. InputRichBlockVideo value
    )?,
  20. TResult? voiceNote(
    1. InputRichBlockVoiceNote value
    )?,
  21. TResult? thinking(
    1. InputRichBlockThinking value
    )?,
})

A variant of map that fallback to returning null.

It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  TResult? Function(InputRichBlockParagraph value)? paragraph,
  TResult? Function(InputRichBlockSectionHeading value)? heading,
  TResult? Function(InputRichBlockPreformatted value)? pre,
  TResult? Function(InputRichBlockFooter value)? footer,
  TResult? Function(InputRichBlockDivider value)? divider,
  TResult? Function(InputRichBlockMathematicalExpression value)?
  mathematicalExpression,
  TResult? Function(InputRichBlockAnchor value)? anchor,
  TResult? Function(InputRichBlockList value)? list,
  TResult? Function(InputRichBlockBlockQuotation value)? blockquote,
  TResult? Function(InputRichBlockPullQuotation value)? pullquote,
  TResult? Function(InputRichBlockCollage value)? collage,
  TResult? Function(InputRichBlockSlideshow value)? slideshow,
  TResult? Function(InputRichBlockTable value)? table,
  TResult? Function(InputRichBlockDetails value)? details,
  TResult? Function(InputRichBlockMap value)? map,
  TResult? Function(InputRichBlockAnimation value)? animation,
  TResult? Function(InputRichBlockAudio value)? audio,
  TResult? Function(InputRichBlockPhoto value)? photo,
  TResult? Function(InputRichBlockVideo value)? video,
  TResult? Function(InputRichBlockVoiceNote value)? voiceNote,
  TResult? Function(InputRichBlockThinking value)? thinking,
}) {
  final _that = this;
  switch (_that) {
    case InputRichBlockParagraph() when paragraph != null:
      return paragraph(_that);
    case InputRichBlockSectionHeading() when heading != null:
      return heading(_that);
    case InputRichBlockPreformatted() when pre != null:
      return pre(_that);
    case InputRichBlockFooter() when footer != null:
      return footer(_that);
    case InputRichBlockDivider() when divider != null:
      return divider(_that);
    case InputRichBlockMathematicalExpression()
        when mathematicalExpression != null:
      return mathematicalExpression(_that);
    case InputRichBlockAnchor() when anchor != null:
      return anchor(_that);
    case InputRichBlockList() when list != null:
      return list(_that);
    case InputRichBlockBlockQuotation() when blockquote != null:
      return blockquote(_that);
    case InputRichBlockPullQuotation() when pullquote != null:
      return pullquote(_that);
    case InputRichBlockCollage() when collage != null:
      return collage(_that);
    case InputRichBlockSlideshow() when slideshow != null:
      return slideshow(_that);
    case InputRichBlockTable() when table != null:
      return table(_that);
    case InputRichBlockDetails() when details != null:
      return details(_that);
    case InputRichBlockMap() when map != null:
      return map(_that);
    case InputRichBlockAnimation() when animation != null:
      return animation(_that);
    case InputRichBlockAudio() when audio != null:
      return audio(_that);
    case InputRichBlockPhoto() when photo != null:
      return photo(_that);
    case InputRichBlockVideo() when video != null:
      return video(_that);
    case InputRichBlockVoiceNote() when voiceNote != null:
      return voiceNote(_that);
    case InputRichBlockThinking() when thinking != null:
      return thinking(_that);
    case _:
      return null;
  }
}