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# frozen_string_literal: true
module RuboCop
module AST
# A node extension for `pair` nodes. This will be used in place of a plain
# node when the builder constructs the AST, making its methods available
# to all `pair` nodes within RuboCop.
class PairNode < Node
include HashElementNode
HASH_ROCKET = '=>'.freeze
SPACED_HASH_ROCKET = ' => '.freeze
COLON = ':'.freeze
SPACED_COLON = ': '.freeze
# Checks whether the `pair` uses a hash rocket delimiter.
#
# @return [Boolean] whether this `pair` uses a hash rocket delimiter
def hash_rocket?
loc.operator.is?(HASH_ROCKET)
end
# Checks whether the `pair` uses a colon delimiter.
#
# @return [Boolean] whether this `pair` uses a colon delimiter
def colon?
loc.operator.is?(COLON)
end
# Returns the delimiter of the `pair` as a string. Returns `=>` for a
# colon delimited `pair` and `:` for a hash rocket delimited `pair`.
#
# @param [Boolean] with_spacing whether to include spacing
# @return [String] the delimiter of the `pair`
def delimiter(with_spacing = false)
if with_spacing
hash_rocket? ? SPACED_HASH_ROCKET : SPACED_COLON
else
hash_rocket? ? HASH_ROCKET : COLON
end
end
# Returns the inverse delimiter of the `pair` as a string.
#
# @param [Boolean] with_spacing whether to include spacing
# @return [String] the inverse delimiter of the `pair`
def inverse_delimiter(with_spacing = false)
if with_spacing
hash_rocket? ? SPACED_COLON : SPACED_HASH_ROCKET
else
hash_rocket? ? COLON : HASH_ROCKET
end
end
# Checks whether the value starts on its own line.
#
# @return [Boolean] whether the value in the `pair` starts its own line
def value_on_new_line?
key.loc.line != value.loc.line
end
end
end
end
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