class RuboCop::Cop::Layout::TrailingWhitespace
This cop looks for trailing whitespace in the source code.
@example
# The line in this example contains spaces after the 0. # bad x = 0 # The line in this example ends directly after the 0. # good x = 0
Constants
- MSG
Public Instance Methods
autocorrect(range)
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# File lib/rubocop/cop/layout/trailing_whitespace.rb, line 36 def autocorrect(range) ->(corrector) { corrector.remove(range) } end
investigate(processed_source)
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# File lib/rubocop/cop/layout/trailing_whitespace.rb, line 22 def investigate(processed_source) heredoc_ranges = extract_heredoc_ranges(processed_source.ast) processed_source.lines.each_with_index do |line, index| next unless line.end_with?(' ', "\t") next if skip_heredoc? && inside_heredoc?(heredoc_ranges, index + 1) range = source_range(processed_source.buffer, index + 1, (line.rstrip.length)...(line.length)) add_offense(range, location: range) end end
Private Instance Methods
extract_heredoc_ranges(ast)
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# File lib/rubocop/cop/layout/trailing_whitespace.rb, line 50 def extract_heredoc_ranges(ast) return [] unless ast ast.each_node(:str, :dstr, :xstr).select(&:heredoc?).map do |node| body = node.location.heredoc_body (body.first_line...body.last_line) end end
inside_heredoc?(heredoc_ranges, line_number)
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# File lib/rubocop/cop/layout/trailing_whitespace.rb, line 46 def inside_heredoc?(heredoc_ranges, line_number) heredoc_ranges.any? { |r| r.include?(line_number) } end
skip_heredoc?()
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# File lib/rubocop/cop/layout/trailing_whitespace.rb, line 42 def skip_heredoc? cop_config.fetch('AllowInHeredoc', false) end