lib/rubocop/ast/node/keyword_splat_node.rb
# frozen_string_literal: true
module RuboCop
module AST
# A node extension for `kwsplat` and `forwarded_kwrestarg` nodes. This will be used in
# place of a plain node when the builder constructs the AST, making its methods available to
# all `kwsplat` and `forwarded_kwrestarg` nodes within RuboCop.
class KeywordSplatNode < Node
include HashElementNode
DOUBLE_SPLAT = '**'
private_constant :DOUBLE_SPLAT
# This is used for duck typing with `pair` nodes which also appear as
# `hash` elements.
#
# @return [false]
def hash_rocket?
false
end
# This is used for duck typing with `pair` nodes which also appear as
# `hash` elements.
#
# @return [false]
def colon?
false
end
# Returns the operator for the `kwsplat` as a string.
#
# @return [String] the double splat operator
def operator
DOUBLE_SPLAT
end
# Custom destructuring method. This is used to normalize the branches
# for `pair` and `kwsplat` nodes, to add duck typing to `hash` elements.
#
# @return [Array<KeywordSplatNode>] the different parts of the `kwsplat`
def node_parts
[self, self]
end
# This provides `forwarded_kwrestarg` node to return true to be compatible with `kwsplat` node.
#
# @return [true]
def kwsplat_type?
true
end
end
end
end