Class: Debugger::FrameCommand

Inherits:

Command

• Object
• Command
• Debugger::FrameCommand

Defined in:

lib/ruby-debug/commands/frame.rb

Overview

:nodoc:

Constant Summary

Constants inherited from Command

Command::DEF_OPTIONS

Class Method Summary

• .help(cmd) ⇒ Object
• .help_command ⇒ Object

Instance Method Summary

• #execute ⇒ Object
• #regexp ⇒ Object

Methods inherited from Command

commands, #find, inherited, #initialize, load_commands, #match, method_missing, options, register_setting_get, register_setting_set, register_setting_var, settings, settings_map

Constructor Details

This class inherits a constructor from Debugger::Command

Class Method Details

.help(cmd) ⇒ Object

# File 'lib/ruby-debug/commands/frame.rb', line 251

def help(cmd)
  %{
    f[rame] [frame-number [thread thread-number]]
    Move the current frame to the specified frame number, or the
    0 if no frame-number has been given.

    A negative number indicates position from the other end.  So
    'frame -1' moves to the oldest frame, and 'frame 0' moves to
    the newest frame.

    Without an argument, the command prints the current stack
    frame. Since the current position is redisplayed, it may trigger a
    resyncronization if there is a front end also watching over
    things.

    If a thread number is given then we set the context for evaluating
    expressions to that frame of that thread.
  }
end

.help_command ⇒ Object

# File 'lib/ruby-debug/commands/frame.rb', line 247

def help_command
  'frame'
end

Instance Method Details

#execute ⇒ Object

# File 'lib/ruby-debug/commands/frame.rb', line 227

def execute
  if not @match[1]
    pos = 0
  else
    pos = get_int(@match[1], "Frame")
    return unless pos
  end
  if @match[2]
    context = parse_thread_num('frame', @match[2])
    unless context
      errmsg "Thread #{@match[2]} doesn't exist.\n"
      return
    end
  else
    context = @state.context
  end
  adjust_frame(pos, true, context)
end

#regexp ⇒ Object

# File 'lib/ruby-debug/commands/frame.rb', line 219

def regexp
  / ^\s*
    f(?:rame)?
    (?: \s+ (\S+))? \s*
    (?: thread \s+ (.*))? \s*
    $/x
end