Class: Byebug::RestartCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/byebug/commands/restart.rb

Overview

Restart debugged program from within byebug.

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Command

commands, find, format_subcmd, format_subcmds, help, inherited, #initialize, load_commands, #match

Constructor Details

This class inherits a constructor from Byebug::Command

Class Method Details

.description ⇒ Object 



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# File 'lib/byebug/commands/restart.rb', line 54

def description
  %(restart|R [args]

    Restart the program. This is a re-exec - all byebug state
    is lost. If command arguments are passed those are used.)
end

.names ⇒ Object 



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# File 'lib/byebug/commands/restart.rb', line 50

def names
  %w(restart)
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/byebug/commands/restart.rb', line 12

def execute
  prog = PROG_SCRIPT if defined?(PROG_SCRIPT)
  byebug_script = BYEBUG_SCRIPT if defined?(BYEBUG_SCRIPT)

  return errmsg("Don't know name of debugged program") unless prog

  unless File.exist?(File.expand_path(prog))
    return errmsg("Ruby program #{prog} doesn't exist")
  end

  if byebug_script
    cmd = "#{byebug_script} #{prog}"
  else
    puts 'Byebug was not called from the outset...'
    if File.executable?(prog)
      cmd = prog
    else
      puts "Ruby program #{prog} not executable... " \
           "We'll wrap it in a ruby call"
      cmd = "ruby -rbyebug -I#{$LOAD_PATH.join(' -I')} #{prog}"
    end
  end

  if @match[:args]
    cmd += " #{@match[:args]}"
  else
    require 'shellwords'
    cmd += " #{ARGV.compact.shelljoin}"
  end

  # An execv would be preferable to the "exec" below.
  puts "Re exec'ing:\n\t#{cmd}"
  exec cmd
rescue Errno::EOPNOTSUPP
  puts 'Restart command is not available at this time.'
end

#regexp ⇒ Object 



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# File 'lib/byebug/commands/restart.rb', line 8

def regexp
  /^\s* (?:restart|R) (?:\s+(?<args>.+))? \s*$/x
end