Class: Instant::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/instant/runner.rb

Instance Method Summary collapse

Constructor Details

#initialize(processor = Processor.new, timeout = 1) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/instant/runner.rb', line 6

def initialize(processor = Processor.new, timeout=1)
  @processor = processor
  @timeout   = timeout
end

Instance Method Details

#run(source) ⇒ Object 



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# File 'lib/instant/runner.rb', line 11

def run(source)      
  begin
    @processed = @processor.process(source)
    context = Context.new
    return_value = nil

    begin
      thread = Thread.new do
        $SAFE = 3          
        Timeout::timeout(@timeout) do
          return_value = context.instance_eval(@processed)
        end
      end
      thread.join
    ensure
      context.close
    end
    {:status => :ok, :result => context.to_s, :return_value => return_value}
  rescue SecurityError => e
    {:status => :error, :cause => :security_error, :message => format_error(e), :result => context.to_s }
  rescue SyntaxError => e
    {:status => :error, :cause => :syntax_error, :message => format_error(e), :result => context.to_s }
  rescue Racc::ParseError => e
    {:status => :error, :cause => :parse_error, :message => format_error(e), :result => context.to_s }
  rescue Instant::LoopTooDeepError => e
    {:status => :error, :cause => :loop_too_deep, :message => "Loop too deep", :result => context.to_s }
  rescue Timeout::Error => e
    {:status => :error, :cause => :timeout, :message => "Timeout: code take more than #{@timeout}s to run.", :result => context.to_s }
  rescue StandardError => e
    {:status => :error, :cause => :unknown, :message => format_error(e), :result => context.to_s }        
  end
end