Class: Commonmarker::Merge::Backend::Node

Inherits:
TreeHaver::Base::Node
  • Object
show all
Defined in:
lib/commonmarker/merge/backend.rb

Overview

Commonmarker node wrapper

Wraps Commonmarker::Node to provide TreeHaver::Node-compatible interface.

Instance Method Summary collapse

Instance Method Details

#children ⇒ Array<Node>

Get child nodes

Returns:

  • (Array<Node>) —

    Child nodes



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# File 'lib/commonmarker/merge/backend.rb', line 171

def children
  return [] unless inner_node.respond_to?(:each)

  result = []
  inner_node.each { |child| result << Node.new(child, source: source, lines: lines) }
  result
end

#end_byte ⇒ Object

Get end byte offset



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# File 'lib/commonmarker/merge/backend.rb', line 186

def end_byte
  ep = end_point
  calculate_byte_offset(ep[:row], ep[:column])
end

#end_point ⇒ Point

Get end point (0-based row/column)

Returns:

  • (Point) —

    End position



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# File 'lib/commonmarker/merge/backend.rb', line 218

def end_point
  if inner_node.respond_to?(:source_position)
    begin
      pos = inner_node.source_position
      if pos && pos[:end_line]
        return Point.new(pos[:end_line] - 1, (pos[:end_column] || 1) - 1)
      end
    rescue
      nil
    end
  end

  begin
    pos = inner_node.sourcepos
    return Point.new(pos[2] - 1, pos[3] - 1) if pos
  rescue
    nil
  end

  Point.new(0, 0)
end

#fence_info ⇒ String?

Get fence info for code blocks

Returns:

  • (String, nil) 


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# File 'lib/commonmarker/merge/backend.rb', line 255

def fence_info
  return unless type == "code_block"
  begin
    inner_node.fence_info
  rescue
    nil
  end
end

#header_level ⇒ Integer?

Get heading level (1-6)

Returns:

  • (Integer, nil) 


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# File 'lib/commonmarker/merge/backend.rb', line 244

def header_level
  return unless type == "heading"
  begin
    inner_node.header_level
  rescue
    nil
  end
end

#next_sibling ⇒ Node?

Get the next sibling

Returns:



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# File 'lib/commonmarker/merge/backend.rb', line 282

def next_sibling
  sibling = begin
    inner_node.next_sibling
  rescue
    nil
  end
  sibling ? Node.new(sibling, source: source, lines: lines) : nil
end

#parent ⇒ Node?

Get the parent node

Returns:



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# File 'lib/commonmarker/merge/backend.rb', line 304

def parent
  p = begin
    inner_node.parent
  rescue
    nil
  end
  p ? Node.new(p, source: source, lines: lines) : nil
end

#prev_sibling ⇒ Node?

Get the previous sibling

Returns:



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# File 'lib/commonmarker/merge/backend.rb', line 293

def prev_sibling
  sibling = begin
    inner_node.previous_sibling
  rescue
    nil
  end
  sibling ? Node.new(sibling, source: source, lines: lines) : nil
end

#start_byte ⇒ Object

Get start byte offset



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# File 'lib/commonmarker/merge/backend.rb', line 180

def start_byte
  sp = start_point
  calculate_byte_offset(sp[:row], sp[:column])
end

#start_point ⇒ Point

Get start point (0-based row/column)

Returns:

  • (Point) —

    Start position



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# File 'lib/commonmarker/merge/backend.rb', line 193

def start_point
  if inner_node.respond_to?(:source_position)
    begin
      pos = inner_node.source_position
      if pos && pos[:start_line]
        return Point.new(pos[:start_line] - 1, (pos[:start_column] || 1) - 1)
      end
    rescue
      nil
    end
  end

  # Fallback: check sourcepos (old API)
  begin
    pos = inner_node.sourcepos
    return Point.new(pos[0] - 1, pos[1] - 1) if pos
  rescue
    nil
  end

  Point.new(0, 0)
end

#text ⇒ String

Get the text content of this node

Returns:

  • (String) —

    Node text



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# File 'lib/commonmarker/merge/backend.rb', line 156

def text
  if inner_node.respond_to?(:string_content)
    begin
      content = inner_node.string_content.to_s
      return content unless content.empty?
    rescue TypeError
      # Container node - fall through
    end
  end
  children.map(&:text).join
end

#title ⇒ String?

Get title for links/images

Returns:

  • (String, nil) 


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# File 'lib/commonmarker/merge/backend.rb', line 274

def title
  inner_node.title
rescue
  nil
end

#type ⇒ String Also known as: kind

Get the node type as a string

Returns:

  • (String) —

    Node type



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# File 'lib/commonmarker/merge/backend.rb', line 146

def type
  inner_node.type.to_s
end

#url ⇒ String?

Get URL for links/images

Returns:

  • (String, nil) 


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# File 'lib/commonmarker/merge/backend.rb', line 266

def url
  inner_node.url
rescue
  nil
end