Contents

module ToSource
  class Emitter

    # Emitter for case statment nodes
    class Case < self

      handle(Rubinius::AST::Case)

    private

      # Perform dispatch
      #
      # @return [undefined]
      #
      # @api private
      #
      def dispatch
        emit('case ')
        emit_receiver
        emit_whens
        emit_else
        emit_end
      end

      # Emit receiver
      #
      # @return [undefined]
      #
      # @api private
      #
      def emit_receiver
      end

      # Emit else
      #
      # @return [undefined]
      #
      # @api private
      #
      def emit_else
        body = node.else
        return if body.kind_of?(Rubinius::AST::NilLiteral)
        emit('else')
        indented do
          visit(body)
        end
      end

      # Emit whens
      #
      # @return [undefined]
      #
      # @api private
      #
      def emit_whens
        first = true
        node.whens.each do |member|
          new_line if first
          first = false
          visit(member)
        end
      end

      # Emitter for receiver case nodes
      class ReceiverCase  < self

        handle(Rubinius::AST::ReceiverCase)

      private
         
        # Emit receiver
        #
        # @return [undefined]
        #
        # @api private
        #
        def emit_receiver
          visit(node.receiver)
        end

      end

    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
to_source-0.2.20	lib/to_source/emitter/case.rb
to_source-0.2.19	lib/to_source/emitter/case.rb
to_source-0.2.18	lib/to_source/emitter/case.rb
to_source-0.2.17	lib/to_source/emitter/case.rb
to_source-0.2.16	lib/to_source/emitter/case.rb