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module Sass
module Tree
# A dynamic node representing a function definition.
#
# @see Sass::Tree
class FunctionNode < Node
# The name of the function.
# @return [String]
attr_reader :name
# The arguments to the function. Each element is a tuple
# containing the variable for argument and the parse tree for
# the default value of the argument
#
# @return [Array<Script::Tree::Node>]
attr_accessor :args
# The splat argument for this function, if one exists.
#
# @return [Script::Tree::Node?]
attr_accessor :splat
# Strips out any vendor prefixes.
# @return [String] The normalized name of the directive.
def normalized_name
@normalized_name ||= name.gsub(/^(?:-[a-zA-Z0-9]+-)?/, '\1')
end
# @param name [String] The function name
# @param args [Array<(Script::Tree::Node, Script::Tree::Node)>]
# The arguments for the function.
# @param splat [Script::Tree::Node] See \{#splat}
def initialize(name, args, splat)
@name = name
@args = args
@splat = splat
super()
return unless %w(and or not).include?(name)
raise Sass::SyntaxError.new("Invalid function name \"#{name}\".")
end
end
end
end
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