Class: Sass::Tree::ExtendNode

Inherits:
Node
  • Object
show all
Defined in:
lib/sass/tree/extend_node.rb

Overview

A static node reprenting an @extend directive.

See Also:

Instance Attribute Summary

Attributes inherited from Node

#children, #filename, #has_children, #line, #options

Instance Method Summary collapse

Methods inherited from Node

#<<, #==, #_cssize, #_perform, #_to_s, #balance, #check_child!, #children_to_src, #cssize!, #dasherize, #do_extend, #each, #invalid_child?, #invisible?, #perform, #perform_children, #render, #run_interp, #semi, #style, #to_s, #to_sass, #to_scss, #to_src

Constructor Details

#initialize(selector) ⇒ ExtendNode

Returns a new instance of ExtendNode.

Parameters:



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# File 'lib/sass/tree/extend_node.rb', line 12

def initialize(selector)
  @selector = selector
  super()
end

Instance Method Details

#cssize(extends, parent)

Registers this extension in the extends subset map.

Parameters:

See Also:



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# File 'lib/sass/tree/extend_node.rb', line 23

def cssize(extends, parent)
  @resolved_selector.members.each do |seq|
    if seq.members.size > 1
      raise Sass::SyntaxError.new("Can't extend #{seq.to_a.join}: can't extend nested selectors")
    end

    sseq = seq.members.first
    if !sseq.is_a?(Sass::Selector::SimpleSequence)
      raise Sass::SyntaxError.new("Can't extend #{seq.to_a.join}: invalid selector")
    end

    sel = sseq.members
    parent.resolved_rules.members.each do |seq|
      if !seq.members.last.is_a?(Sass::Selector::SimpleSequence)
        raise Sass::SyntaxError.new("#{seq} can't extend: invalid selector")
      end

      extends[sel] = seq
    end
  end

  []
end

#perform!(environment) (protected)

Runs SassScript interpolation in the selector, and then parses the result into a Selector::CommaSequence.

Parameters:

  • environment (Sass::Environment) —

    The lexical environment containing variable and mixin values



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# File 'lib/sass/tree/extend_node.rb', line 54

def perform!(environment)
  @resolved_selector = Sass::SCSS::CssParser.new(run_interp(@selector, environment), self.line).
    parse_selector(self.filename)
  super
end