Class: Sass::Tree::WhileNode

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

Overview

A dynamic node representing a Sass @while loop.

See Also:

Instance Attribute Summary

Attributes inherited from Node

#children, #filename, #line, #options

Instance Method Summary collapse

Methods inherited from Node

#<<, #==, #_to_s, #balance, #interpolate, #invalid_child?, #invisible?, #last, #perform, #perform!, #perform_children, #render, #style, #to_s, #to_sass

Constructor Details

#initialize(expr) ⇒ WhileNode

Returns a new instance of WhileNode.

Parameters:

  • expr (Script::Node) —

    The parse tree for the continue expression



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

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

Instance Method Details

#_perform(environment) ⇒ Array<Tree::Node> (protected)

Runs the child nodes until the continue expression becomes false.

Parameters:

  • environment (Sass::Environment) —

    The lexical environment containing variable and mixin values

Returns:

  • (Array<Tree::Node>) —

    The resulting static nodes

See Also:



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

def _perform(environment)
  children = []
  new_environment = Sass::Environment.new(environment)
  while @expr.perform(environment).to_bool
    children += perform_children(new_environment)
  end
  children
end