Contents

require File.join(File.dirname(__FILE__),"..","..","lib","babel_bridge")

class TuringParser < BabelBridge::Parser
  ignore_whitespace

  binary_operators_rule :statement, :operand, [[:/, :*], [:+, :-]] do
    def evaluate
      left.evaluate.send operator, right.evaluate
    end
  end

  rule :operand, "(", :statement, ")"
  
  rule :operand, /[-]?[0-9]+/ do
    def evaluate
      to_s.to_i
    end
  end
end

BabelBridge::Shell.new(TuringParser.new).start

Version data entries

8 entries across 8 versions & 1 rubygems

Version	Path
babel_bridge-0.5.5	examples/turing/turing07.rb
babel_bridge-0.5.4	examples/turing/turing07.rb
babel_bridge-0.5.3	examples/turing/turing07.rb
babel_bridge-0.5.1	examples/turing/turing07.rb
babel_bridge-0.5.0	examples/turing/turing07.rb
babel_bridge-0.4.1	examples/turing/turing07.rb
babel_bridge-0.4.0	examples/turing/turing07.rb
babel_bridge-0.3.1	examples/turing/turing07.rb