Class: Byebug::ControlCommandProcessor

Inherits:
Processor
  • Object
show all
Defined in:
lib/byebug/processor.rb

Defined Under Namespace

Classes: State

Instance Attribute Summary

Attributes inherited from Processor

#interface

Instance Method Summary collapse

Methods inherited from Processor

#afmt, #aprint

Constructor Details

#initialize(interface) ⇒ ControlCommandProcessor

Returns a new instance of ControlCommandProcessor.



372
373
374
375
376
 
# File 'lib/byebug/processor.rb', line 372

def initialize(interface)
  super()
  @interface = interface
  @byebug_context_was_dead = true # Assume we haven't started.
end

Instance Method Details

#process_commands(verbose = false) ⇒ Object 



378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
 
# File 'lib/byebug/processor.rb', line 378

def process_commands(verbose=false)
  control_cmds = Command.commands.select do |cmd|
    cmd.allow_in_control
  end
  state = State.new(@interface, control_cmds)
  commands = control_cmds.map{|cmd| cmd.new(state) }

  unless @byebug_context_was_dead
    if Byebug.annotate.to_i > 2
      aprint 'exited'
      print "The program finished.\n"
    end
    @byebug_context_was_dead = true
  end

  while input = @interface.read_command(prompt(nil))
    print "+#{input}" if verbose
    catch(:debug_error) do
      if cmd = commands.find{|c| c.match(input) }
        cmd.execute
      else
        errmsg "Unknown command\n"
      end
    end
  end
rescue IOError, Errno::EPIPE
rescue Exception
  print "INTERNAL ERROR!!! #{$!}\n" rescue nil
  print $!.backtrace.map{|l| "\t#{l}"}.join("\n") rescue nil
ensure
  @interface.close
end

#prompt(context) ⇒ Object

The prompt shown before reading a command. Note: have an unused ‘context’ parameter to match the local interface.



413
414
415
416
417
418
 
# File 'lib/byebug/processor.rb', line 413

def prompt(context)
  p = '(byebug:ctrl) '
  p = afmt("pre-prompt")+p+"\n"+afmt("prompt") if
    Byebug.annotate.to_i > 2
  return p
end