Contents

# frozen_string_literal: true

module Boxcars
  # used by Boxcars to run ruby code
  class RubyREPL
    # Execute ruby code
    # @param code [String] The code to run
    def call(code:)
      Boxcars.debug "RubyREPL: #{code}", :yellow

      # wrap the code in an excption block so we can catch errors
      wrapped = "begin\n#{code}\nrescue Exception => e\n  puts 'Error: ' + e.message\nend"
      output = ""
      IO.popen("ruby", "r+") do |io|
        io.puts wrapped
        io.close_write
        output = io.read
      end
      if output =~ /^Error: /
        Boxcars.debug output, :red
        Result.from_error(output, code: code)
      else
        Boxcars.debug "Answer: #{output}", :yellow, style: :bold
        Result.from_text(output, code: code)
      end
    end

    # Execute ruby code
    # @param command [String] The code to run
    def run(command)
      call(code: command)
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
boxcars-0.2.5	lib/boxcars/ruby_repl.rb
boxcars-0.2.4	lib/boxcars/ruby_repl.rb
boxcars-0.2.3	lib/boxcars/ruby_repl.rb
boxcars-0.2.2	lib/boxcars/ruby_repl.rb
boxcars-0.2.1	lib/boxcars/ruby_repl.rb