class RuboCop::Cop::Layout::LineContinuationSpacing
Checks that the backslash of a line continuation is separated from preceding text by exactly one space (default) or zero spaces.
@example EnforcedStyle: space (default)
# bad 'a'\ 'b' \ 'c' # good 'a' \ 'b' \ 'c'
@example EnforcedStyle: no_space
# bad 'a' \ 'b' \ 'c' # good 'a'\ 'b'\ 'c'
Public Instance Methods
on_new_investigation()
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 34 def on_new_investigation return unless processed_source.raw_source.include?('\\') last_line = last_line(processed_source) processed_source.raw_source.lines.each_with_index do |line, index| break if index >= last_line line_number = index + 1 investigate(line, line_number) end end
Private Instance Methods
autocorrect(corrector, range)
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 81 def autocorrect(corrector, range) correction = if no_space_style? '\\' elsif space_style? ' \\' end corrector.replace(range, correction) end
comment_ranges(comments)
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rubocop:enable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 111 def comment_ranges(comments) comments.map(&:source_range) end
find_offensive_spacing(line)
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 65 def find_offensive_spacing(line) if no_space_style? line[/\s+\\$/, 0] elsif space_style? line[/((?<!\s)|\s{2,})\\$/, 0] end end
ignore_range?(backtick_range)
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 121 def ignore_range?(backtick_range) ignored_ranges.any? { |range| range.contains?(backtick_range) } end
ignored_literal_ranges(ast)
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rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 91 def ignored_literal_ranges(ast) # which lines start inside a string literal? return [] if ast.nil? ast.each_node(:str, :dstr, :array).with_object(Set.new) do |literal, ranges| loc = literal.location if literal.array_type? next unless literal.percent_literal? ranges << loc.expression elsif literal.heredoc? ranges << loc.heredoc_body elsif loc.respond_to?(:begin) && loc.begin ranges << loc.expression end end end
ignored_ranges()
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 125 def ignored_ranges @ignored_ranges ||= ignored_literal_ranges(processed_source.ast) + comment_ranges(processed_source.comments) end
investigate(line, line_number)
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 49 def investigate(line, line_number) offensive_spacing = find_offensive_spacing(line) return unless offensive_spacing range = source_range( processed_source.buffer, line_number, line.length - offensive_spacing.length - 1, offensive_spacing.length ) return if ignore_range?(range) add_offense(range) { |corrector| autocorrect(corrector, range) } end
last_line(processed_source)
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 115 def last_line(processed_source) last_token = processed_source.tokens.last last_token ? last_token.line : processed_source.lines.length end
message(_range)
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 73 def message(_range) if no_space_style? 'Use zero spaces in front of backslash.' elsif space_style? 'Use one space in front of backslash.' end end
no_space_style?()
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 130 def no_space_style? cop_config['EnforcedStyle'] == 'no_space' end
space_style?()
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# File lib/rubocop/cop/layout/line_continuation_spacing.rb, line 134 def space_style? cop_config['EnforcedStyle'] == 'space' end