Sha256: 3618516e596439cf7e295a07a03a9758a3b727c1c092be9cec7ced859073e249
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Size: 1.38 KB
Versions: 177
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Stored size: 1.38 KB
Contents
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
protected
# @see Node#to_src
def to_src(tabs, opts, fmt)
"#{' ' * tabs}@while #{@expr.to_sass(opts)}" + children_to_src(tabs, opts, fmt)
end
# 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)
end
children
end
# Returns an error message if the given child node is invalid,
# and false otherwise.
#
# {ExtendNode}s are valid within {WhileNode}s.
#
# @param child [Tree::Node] A potential child node.
# @return [Boolean, String] Whether or not the child node is valid,
# as well as the error message to display if it is invalid
def invalid_child?(child)
super unless child.is_a?(ExtendNode)
end
end
end
Version data entries
177 entries across 176 versions & 5 rubygems