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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Layout
# This cop checks whether the end statement of a do..end block
# is on its own line.
#
# @example
# # bad
# blah do |i|
# foo(i) end
#
# # good
# blah do |i|
# foo(i)
# end
#
# # bad
# blah { |i|
# foo(i) }
#
# # good
# blah { |i|
# foo(i)
# }
class BlockEndNewline < Cop
include Alignment
MSG = 'Expression at %<line>d, %<column>d should be on its own line.'
.freeze
def on_block(node)
return if node.single_line?
# If the end is on its own line, there is no offense
return if begins_its_line?(node.loc.end)
add_offense(node, location: :end)
end
def autocorrect(node)
lambda do |corrector|
corrector.replace(delimiter_range(node),
"\n#{node.loc.end.source}#{offset(node)}")
end
end
private
def message(node)
format(MSG, line: node.loc.end.line, column: node.loc.end.column + 1)
end
def delimiter_range(node)
Parser::Source::Range.new(node.loc.expression.source_buffer,
node.children.last.loc.expression.end_pos,
node.loc.expression.end_pos)
end
end
end
end
end
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