Class: Sass::Tree::Node

Inherits:
Object show all
Defined in:
lib/sass/css.rb,
lib/sass/tree/node.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Node

Returns a new instance of Node.



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# File 'lib/sass/tree/node.rb', line 9

def initialize
  @children = []
end

Instance Attribute Details

#children ⇒ Object

Returns the value of attribute children.



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# File 'lib/sass/tree/node.rb', line 4

def children
  @children
end

#filename ⇒ Object 



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# File 'lib/sass/tree/node.rb', line 18

def filename
  @filename || @options[:filename]
end

#line ⇒ Object

Returns the value of attribute line.



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# File 'lib/sass/tree/node.rb', line 5

def line
  @line
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/sass/tree/node.rb', line 7

def options
  @options
end

Instance Method Details

#<<(child) ⇒ Object 



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# File 'lib/sass/tree/node.rb', line 22

def <<(child)
  if msg = invalid_child?(child)
    raise Sass::SyntaxError.new(msg, child.line)
  end
  @children << child
end

#==(other) ⇒ Object 



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# File 'lib/sass/tree/node.rb', line 34

def ==(other)
  self.class == other.class && other.children == children
end

#invisible? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sass/tree/node.rb', line 42

def invisible?; false; end

#last ⇒ Object

We need this because Node duck types as an Array in engine.rb



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# File 'lib/sass/tree/node.rb', line 30

def last
  children.last
end

#perform(environment) ⇒ Object 



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# File 'lib/sass/tree/node.rb', line 59

def perform(environment)
  environment.options = @options if self.class == Tree::Node
  _perform(environment)
rescue Sass::SyntaxError => e; e.add_metadata(filename, line)
end

#render ⇒ Object 



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# File 'lib/sass/tree/node.rb', line 38

def render
  perform(Environment.new).to_s
end

#style ⇒ Object 



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# File 'lib/sass/tree/node.rb', line 65

def style
  @options[:style]
end

#to_s ⇒ Object 



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# File 'lib/sass/tree/node.rb', line 44

def to_s
  result = String.new
  children.each do |child|
    if child.is_a? AttrNode
      raise Sass::SyntaxError.new('Attributes aren\'t allowed at the root of a document.', child.line)
    else
      next if child.invisible?
      child_str = child.to_s(1)
      result << child_str + (style == :compressed ? '' : "\n")
    end
  end
  style == :compressed ? result+"\n" : result[0...-1]
rescue Sass::SyntaxError => e; e.add_metadata(filename, line)
end

#to_sass(opts = {}) ⇒ Object 



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# File 'lib/sass/css.rb', line 9

def to_sass(opts = {})
  result = ''

  children.each do |child|
    result << "#{child.to_sass(0, opts)}\n"
  end

  result
end