Class: Sass::Tree::RootNode

Inherits:
Node show all
Defined in:
lib/sass/tree/root_node.rb

Overview

A static node that is the root node of the Sass document.

Direct Known Subclasses

ImportNode

Instance Attribute Summary collapse

Attributes inherited from Node

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

Instance Method Summary collapse

Methods inherited from Node

#<<, #==, #_cssize, #_perform, #balance, #children_to_src, #dasherize, #each, #invisible?, #perform_children, #render, #run_interp, #semi, #style

Constructor Details

#initialize(template) ⇒ RootNode

Returns a new instance of RootNode.

Parameters:

  • template (String) —

    The Sass template from which this node was created



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# File 'lib/sass/tree/root_node.rb', line 11

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

Instance Attribute Details

#template (readonly)

The Sass template from which this node was created

Parameters:

  • template (String) 


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# File 'lib/sass/tree/root_node.rb', line 8

def template
  @template
end

Instance Method Details

#_to_s(*args) ⇒ String (protected)

Computes the CSS corresponding to this Sass tree.

Parameters:

  • args (Array) —

    ignored

Returns:

  • (String) —

    The resulting CSS

See Also:



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# File 'lib/sass/tree/root_node.rb', line 97

def _to_s(*args)
  result = String.new
  children.each do |child|
    next if child.invisible?
    child_str = child.to_s(1)
    result << child_str + (style == :compressed ? '' : "\n")
  end
  result.rstrip!
  return "" if result.empty?
  return result + "\n"
end

#cssize(*args)

See Also:



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

def cssize(*args)
  super
rescue Sass::SyntaxError => e
  e.sass_template = @template
  raise e
end

#cssize!(parent) (protected)

Destructively converts this static Sass node into a static CSS node, and checks that there are no properties at root level.

Parameters:

  • parent (Node, nil) —

    The parent node of this node. This should only be non-nil if the parent is the same class as this node

Raises:

See Also:



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# File 'lib/sass/tree/root_node.rb', line 84

def cssize!(parent)
  super
  return unless child = children.find {|c| c.is_a?(PropNode)}
  message = "Properties aren't allowed at the root of a document." +
    child.pseudo_class_selector_message
  raise Sass::SyntaxError.new(message, :line => child.line)
end

#invalid_child?(child) ⇒ Boolean (protected)

Returns false, because all nodes are allowed at the root of the document (properties are detected elsewhere post-mixin-resolution).

Returns:

  • (Boolean)

See Also:



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# File 'lib/sass/tree/root_node.rb', line 113

def invalid_child?(child)
  false
end

#perform(environment)

See Also:



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# File 'lib/sass/tree/root_node.rb', line 25

def perform(environment)
  environment.options = @options if environment.options.nil? || environment.options.empty?
  super
rescue Sass::SyntaxError => e
  e.sass_template = @template
  raise e
end

#perform!(environment)

See Also:

  • Sass::Tree::RootNode.\{Node\{Node#perform!}


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

def perform!(environment)
  environment.options = @options if environment.options.nil? || environment.options.empty?
  super
end

#to_s(*args)

See Also:



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# File 'lib/sass/tree/root_node.rb', line 17

def to_s(*args)
  super
rescue Sass::SyntaxError => e
  e.sass_template = @template
  raise e
end

#to_sass(opts = {}) ⇒ String

Converts a node to Sass code that will generate it.

Parameters:

Returns:

  • (String) —

    The Sass code corresponding to the node



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# File 'lib/sass/tree/root_node.rb', line 51

def to_sass(opts = {})
  to_src(opts, :sass)
end

#to_scss(opts = {}) ⇒ String

Converts a node to SCSS code that will generate it.

Parameters:

Returns:

  • (String) —

    The SCSS code corresponding to the node



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

def to_scss(opts = {})
  to_src(opts, :scss)
end

#to_src(opts, fmt) (protected) 



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

def to_src(opts, fmt)
  Haml::Util.enum_cons(children + [nil], 2).map do |child, nxt|
    child.send("to_#{fmt}", 0, opts) +
      if nxt &&
          (child.is_a?(CommentNode) && child.line + child.value.count("\n") + 1 == nxt.line) ||
          (child.is_a?(ImportNode) && nxt.is_a?(ImportNode) && child.line + 1 == nxt.line)
        ""
      else
        "\n"
      end
  end.join.rstrip + "\n"
end