Contents

# encoding: utf-8

module Rubocop
  module Cop
    class VariableInterpolation < Cop
      MSG = 'Replace interpolated var %s with expression #{%s}.'

      def on_dstr(node)
        var_nodes(node.children).each do |v|
          var = (v.type == :nth_ref ? '$' : '') + v.to_a[0].to_s

          if node.loc.expression.source.include?("##{var}")
            add_offence(:convention,
                        v.loc.line,
                        sprintf(MSG, var, var))
          end
        end

        super
      end

      private

      def var_nodes(nodes)
        nodes.select { |n| [:ivar, :cvar, :gvar, :nth_ref].include?(n.type) }
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
rubocop-0.8.3	lib/rubocop/cop/variable_interpolation.rb
rubocop-0.8.2	lib/rubocop/cop/variable_interpolation.rb
rubocop-0.8.1	lib/rubocop/cop/variable_interpolation.rb
rubocop-0.8.0	lib/rubocop/cop/variable_interpolation.rb