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# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# Checks that a range literal is enclosed in parentheses when the end of the range is
# at a line break.
#
# NOTE: The following is maybe intended for `(42..)`. But, compatible is `42..do_something`.
# So, this cop does not provide autocorrection because it is left to user.
#
# [source,ruby]
# ----
# case condition
# when 42..
# do_something
# end
# ----
#
# @example
#
# # bad - Represents `(1..42)`, not endless range.
# 1..
# 42
#
# # good - It's incompatible, but your intentions when using endless range may be:
# (1..)
# 42
#
# # good
# 1..42
#
# # good
# (1..42)
#
# # good
# (1..
# 42)
#
class RequireRangeParentheses < Base
MSG = 'Wrap the endless range literal `%<range>s` to avoid precedence ambiguity.'
def on_irange(node)
return if node.parent&.begin_type?
return unless node.begin && node.end
return if same_line?(node.begin, node.end)
message = format(MSG, range: "#{node.begin.source}#{node.loc.operator.source}")
add_offense(node, message: message)
end
alias on_erange on_irange
end
end
end
end
Version data entries
180 entries across 175 versions & 17 rubygems