table.tt

module Cucumber
  module Parser
    grammar Table
      rule record
        cell_value / (cell_value separator record)
      end
      
      rule separator
        '|'
      end
      
      rule cell_value
        (!separator .)+
      end
    end
  end
end

table_spec.rb

require File.dirname(__FILE__) + '/../../spec_helper'
require 'treetop'
require 'cucumber/parser/table'

module Cucumber
  module Parser
    describe Table do
      before do
        @parser = TableParser.new
      end
      
      def parse(text)
        @parser.parse(text) || raise(@parser.failure_reason)
      end

      it "should parse a row with one cell" do
        parse("hi")
      end

      it "should parse a row with two cells" do
        parse("hello|there")
      end
    end
  end
end