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# frozen_string_literal: true
module RuboCop
module Cop
module Layout
# Checks for colon (:) not followed by some kind of space.
# N.B. this cop does not handle spaces after a ternary operator, which are
# instead handled by Layout/SpaceAroundOperators.
#
# @example
# # bad
# def f(a:, b:2); {a:3}; end
#
# # good
# def f(a:, b: 2); {a: 3}; end
class SpaceAfterColon < Cop
MSG = 'Space missing after colon.'.freeze
def on_pair(node)
return unless node.colon?
colon = node.loc.operator
add_offense(colon, location: colon) unless followed_by_space?(colon)
end
def on_kwoptarg(node)
# We have no direct reference to the colon source range following an
# optional keyword argument's name, so must construct one.
colon = node.loc.name.end.resize(1)
add_offense(colon, location: colon) unless followed_by_space?(colon)
end
def autocorrect(range)
->(corrector) { corrector.insert_after(range, ' ') }
end
private
def followed_by_space?(colon)
colon.source_buffer.source[colon.end_pos] =~ /\s/
end
end
end
end
end
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