class RuboCop::Cop::Lint::LiteralInInterpolation
This cop checks for interpolated literals.
@example
# bad "result is #{10}"
@example
# good "result is 10"
Constants
- COMPOSITE
- MSG
Public Instance Methods
autocorrect(node)
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# File lib/rubocop/cop/lint/literal_in_interpolation.rb, line 37 def autocorrect(node) return if node.dstr_type? # nested, fixed in next iteration value = autocorrected_value(node) ->(corrector) { corrector.replace(node.parent.source_range, value) } end
on_dstr(node)
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# File lib/rubocop/cop/lint/literal_in_interpolation.rb, line 26 def on_dstr(node) node.each_child_node(:begin) do |begin_node| final_node = begin_node.children.last next unless final_node next if special_keyword?(final_node) next unless prints_as_self?(final_node) add_offense(final_node) end end
Private Instance Methods
autocorrected_value(node)
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# File lib/rubocop/cop/lint/literal_in_interpolation.rb, line 52 def autocorrected_value(node) case node.type when :int node.children.last.to_i.to_s when :float node.children.last.to_f.to_s when :str autocorrected_value_for_string(node) when :sym autocorrected_value_for_symbol(node) when :array autocorrected_value_for_array(node) else node.source.gsub('"', '\"') end end
autocorrected_value_for_array(node)
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# File lib/rubocop/cop/lint/literal_in_interpolation.rb, line 84 def autocorrected_value_for_array(node) return node.source.gsub('"', '\"') unless node.percent_literal? contents_range(node).source.split(' ').to_s.gsub('"', '\"') end
autocorrected_value_for_string(node)
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# File lib/rubocop/cop/lint/literal_in_interpolation.rb, line 69 def autocorrected_value_for_string(node) if node.source.start_with?("'", '%q') node.children.last.inspect[1..-2] else node.children.last end end
autocorrected_value_for_symbol(node)
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# File lib/rubocop/cop/lint/literal_in_interpolation.rb, line 77 def autocorrected_value_for_symbol(node) end_pos = node.loc.end ? node.loc.end.begin_pos : node.loc.expression.end_pos range_between(node.loc.begin.end_pos, end_pos).source end
prints_as_self?(node)
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Does node print its own source when converted to a string?
# File lib/rubocop/cop/lint/literal_in_interpolation.rb, line 91 def prints_as_self?(node) node.basic_literal? || (COMPOSITE.include?(node.type) && node.children.all? { |child| prints_as_self?(child) }) end
special_keyword?(node)
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# File lib/rubocop/cop/lint/literal_in_interpolation.rb, line 46 def special_keyword?(node) # handle strings like __FILE__ (node.str_type? && !node.loc.respond_to?(:begin)) || node.source_range.is?('__LINE__') end