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# frozen_string_literal: true
module RuboCop
module AST
# A node extension for `case_match` nodes. This will be used in place of
# a plain node when the builder constructs the AST, making its methods
# available to all `case_match` nodes within RuboCop.
class CaseMatchNode < Node
include ConditionalNode
# Returns the keyword of the `case` statement as a string.
#
# @return [String] the keyword of the `case` statement
def keyword
'case'
end
# @deprecated Use `in_pattern_branches.each`
def each_in_pattern(&block)
return in_pattern_branches.to_enum(__method__) unless block_given?
in_pattern_branches.each(&block)
self
end
# Returns an array of all the when branches in the `case` statement.
#
# @return [Array<Node>] an array of `in_pattern` nodes
def in_pattern_branches
node_parts[1...-1]
end
# Returns the else branch of the `case` statement, if any.
#
# @return [Node] the else branch node of the `case` statement
# @return [nil] if the case statement does not have an else branch.
def else_branch
node_parts[-1]
end
# Checks whether this case statement has an `else` branch.
#
# @return [Boolean] whether the `case` statement has an `else` branch
def else?
!loc.else.nil?
end
end
end
end
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