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# frozen_string_literal: true
module RuboCop
module AST
# A node extension for `array` nodes. This will be used in place of a plain
# node when the builder constructs the AST, making its methods available
# to all `array` nodes within RuboCop.
class ArrayNode < Node
PERCENT_LITERAL_TYPES = {
string: /^%[wW]/,
symbol: /^%[iI]/
}.freeze
# Returns an array of all value nodes in the `array` literal.
#
# @return [Array<Node>] an array of value nodes
alias values children
# @deprecated Use `values.each` (a.k.a. `children.each`)
def each_value(&block)
return to_enum(__method__) unless block_given?
values.each(&block)
self
end
# Checks whether the `array` literal is delimited by square brackets.
#
# @return [Boolean] whether the array is enclosed in square brackets
def square_brackets?
loc.begin&.is?('[')
end
# Checks whether the `array` literal is delimited by percent brackets.
#
# @overload percent_literal?
# Check for any percent literal.
#
# @overload percent_literal?(type)
# Check for percent literal of type `type`.
#
# @param type [Symbol] an optional percent literal type
#
# @return [Boolean] whether the array is enclosed in percent brackets
def percent_literal?(type = nil)
if type
loc.begin && loc.begin.source =~ PERCENT_LITERAL_TYPES[type]
else
loc.begin&.source&.start_with?('%')
end
end
# Checks whether the `array` literal is delimited by either percent or
# square brackets
#
# @return [Boolean] whether the array is enclosed in percent or square
# brackets
def bracketed?
square_brackets? || percent_literal?
end
end
end
end
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