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Contents
require 'sass/tree/node'
module Sass::Tree
# A dynamic node representing a Sass `@each` loop.
#
# @see Sass::Tree
class EachNode < Node
# @param var [String] The name of the loop variable
# @param list [Script::Node] The parse tree for the list
def initialize(var, list)
@var = var
@list = list
super()
end
protected
# @see Node#to_src
def to_src(tabs, opts, fmt)
"#{' ' * tabs}@each $#{dasherize(@var, opts)} in #{@list.to_sass(opts)}" +
children_to_src(tabs, opts, fmt)
end
# Runs the child nodes once for each value in the list.
#
# @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)
list = @list.perform(environment)
children = []
environment = Sass::Environment.new(environment)
list.to_a.each do |v|
environment.set_local_var(@var, v)
children += perform_children(environment)
end
children
end
# Returns an error message if the given child node is invalid,
# and false otherwise.
#
# {ExtendNode}s are valid within {EachNode}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
32 entries across 32 versions & 2 rubygems