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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Style
# Checks for uses of `String#split` with empty string or regexp literal argument.
#
# @safety
# This cop is unsafe because it cannot be guaranteed that the receiver
# is actually a string. If another class has a `split` method with
# different behavior, it would be registered as a false positive.
#
# @example
# # bad
# string.split(//)
# string.split('')
#
# # good
# string.chars
#
class StringChars < Base
include RangeHelp
extend AutoCorrector
MSG = 'Use `chars` instead of `%<current>s`.'
RESTRICT_ON_SEND = %i[split].freeze
BAD_ARGUMENTS = %w[// '' ""].freeze
def on_send(node)
return unless node.arguments.one? && BAD_ARGUMENTS.include?(node.first_argument.source)
range = range_between(node.loc.selector.begin_pos, node.source_range.end_pos)
add_offense(range, message: format(MSG, current: range.source)) do |corrector|
corrector.replace(range, 'chars')
end
end
alias on_csend on_send
end
end
end
end
Version data entries
38 entries across 38 versions & 8 rubygems