lib/sass/tree/while_node.rb in haml-edge-2.1.21 vs lib/sass/tree/while_node.rb in haml-edge-2.1.22

@@ -1,15 +1,25 @@
 require 'sass/tree/node'
 
 module Sass::Tree
+  # A dynamic node representing a Sass `@while` loop.
+  #
+  # @see Sass::Tree
   class WhileNode < Node
+    # @param expr [Script::Node] The parse tree for the continue expression
     def initialize(expr)
       @expr = expr
       super()
     end
 
-    private
+    protected
 
+    # Runs the child nodes until the continue expression becomes false.
+    #
+    # @param environment [Sass::Environment] The lexical environment containing
+    #   variable and mixin values
+    # @return [Array<Tree::Node>] The resulting static nodes
+    # @see Sass::Tree
     def _perform(environment)
       children = []
       new_environment = Sass::Environment.new(environment)
       while @expr.perform(environment).to_bool
         children += perform_children(new_environment)