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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# Checks for duplicated magic comments.
#
# @example
#
# # bad
#
# # encoding: ascii
# # encoding: ascii
#
# # good
#
# # encoding: ascii
#
# # bad
#
# # frozen_string_literal: true
# # frozen_string_literal: true
#
# # good
#
# # frozen_string_literal: true
#
class DuplicateMagicComment < Base
include FrozenStringLiteral
include RangeHelp
extend AutoCorrector
MSG = 'Duplicate magic comment detected.'
def on_new_investigation
return if processed_source.buffer.source.empty?
magic_comment_lines.each_value do |comment_lines|
next if comment_lines.count <= 1
comment_lines[1..].each do |comment_line|
range = processed_source.buffer.line_range(comment_line + 1)
register_offense(range)
end
end
end
private
def magic_comment_lines
comment_lines = { encoding_magic_comments: [], frozen_string_literal_magic_comments: [] }
leading_magic_comments.each.with_index do |magic_comment, index|
if magic_comment.encoding_specified?
comment_lines[:encoding_magic_comments] << index
elsif magic_comment.frozen_string_literal_specified?
comment_lines[:frozen_string_literal_magic_comments] << index
end
end
comment_lines
end
def register_offense(range)
add_offense(range) do |corrector|
corrector.remove(range_by_whole_lines(range, include_final_newline: true))
end
end
end
end
end
end
Version data entries
176 entries across 175 versions & 18 rubygems