Class: CommonMarker::Renderer

Inherits:
Object
  • Object
show all
Defined in:
lib/commonmarker/renderer.rb

Direct Known Subclasses

HtmlRenderer

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options: :DEFAULT, extensions: []) ⇒ Renderer

Returns a new instance of Renderer.



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# File 'lib/commonmarker/renderer.rb', line 9

def initialize(options: :DEFAULT, extensions: [])
  @opts = Config.process_options(options, :render)
  @stream = StringIO.new(+'')
  @need_blocksep = false
  @warnings = Set.new []
  @in_tight = false
  @in_plain = false
  @tagfilter = extensions.include?(:tagfilter)
end

Instance Attribute Details

#in_plain ⇒ Object

Returns the value of attribute in_plain.



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# File 'lib/commonmarker/renderer.rb', line 8

def in_plain
  @in_plain
end

#in_tight ⇒ Object

Returns the value of attribute in_tight.



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# File 'lib/commonmarker/renderer.rb', line 8

def in_tight
  @in_tight
end

#warnings ⇒ Object

Returns the value of attribute warnings.



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# File 'lib/commonmarker/renderer.rb', line 8

def warnings
  @warnings
end

Instance Method Details

#block ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 74

def block
  cr
  yield
  cr
end

#blocksep ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 66

def blocksep
  out("\n")
end

#code_block(node) ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 54

def code_block(node)
  code_block(node)
end

#container(starter, ender) ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 80

def container(starter, ender)
  out(starter)
  yield
  out(ender)
end

#containersep ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 70

def containersep
  cr unless @in_tight
end

#cr ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 60

def cr
  return if @stream.string.empty? || @stream.string[-1] == "\n"

  out("\n")
end

#document(_node) ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 50

def document(_node)
  out(:children)
end

#out(*args) ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 19

def out(*args)
  args.each do |arg|
    if arg == :children
      @node.each { |child| out(child) }
    elsif arg.is_a?(Array)
      arg.each { |x| render(x) }
    elsif arg.is_a?(Node)
      render(arg)
    else
      @stream.write(arg)
    end
  end
end

#plain ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 86

def plain
  old_in_plain = @in_plain
  @in_plain = true
  yield
  @in_plain = old_in_plain
end

#reference_def(_node) ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 58

def reference_def(_node); end

#render(node) ⇒ Object 



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# File 'lib/commonmarker/renderer.rb', line 33

def render(node)
  @node = node
  if node.type == :document
    document(node)
    @stream.string
  elsif @in_plain && node.type != :text && node.type != :softbreak
    node.each { |child| render(child) }
  else
    begin
      send(node.type, node)
    rescue NoMethodError => e
      @warnings.add("WARNING: #{node.type} not implemented.")
      raise e
    end
  end
end