Module: RedQuilt::CodeBlock

Defined in:
lib/red_quilt/code_block.rb

Overview

Fenced and indented code blocks (CommonMark 4.4 / 4.5). The module functions detect a code-block start; the nested Parser builds the arena node, mirroring the List / Blockquote split (detection used by the block dispatch, construction by a cached collaborator).

Defined Under Namespace

Classes: Parser

Class Method Summary collapse

Class Method Details

.fenced_start(text) ⇒ Object

Detects a fenced code opener. Returns a Hash describing the fence ({ char:, count:, info:, indent: }) or nil.



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# File 'lib/red_quilt/code_block.rb', line 13

def fenced_start(text)
  match = /\A( {0,3})(`{3,}|~{3,})[ \t]*(.*?)\s*\z/.match(text)
  return unless match

  info = match[3]
  # CommonMark: a backtick-style fence cannot have backticks in its
  # info string (they'd be ambiguous with the fence itself).
  return if match[2].start_with?("`") && info.include?("`")

  {
    char: match[2][0],
    count: match[2].length,
    info: ReferenceDefinition.unescape_text(info),
    indent: match[1].length,
  }
end

.indented_line?(text) ⇒ Boolean

True when ‘text` is an indented code line: 4+ columns of leading whitespace (tabs expand to a 4-column tab stop).

Returns:

  • (Boolean) 


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# File 'lib/red_quilt/code_block.rb', line 32

def indented_line?(text)
  Indentation.leading_columns(text) >= 4
end