Class: Byebug::FrameCommand

Inherits:
Command
  • Object
show all
Includes:
FrameFunctions
Defined in:
lib/byebug/commands/frame.rb

Overview

Move to specific frames in the backtrace.

Class Method Summary collapse

Instance Method Summary collapse

Methods included from FrameFunctions

#adjust_frame, #get_pr_arguments, #navigate_to_frame, #switch_to_frame

Methods inherited from Command

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

Methods included from StringFunctions

#camelize, #prettify

Methods included from FileFunctions

#get_line, #get_lines, #n_lines, #normalize

Methods included from ParseFunctions

#get_int, #parse_steps, #syntax_valid?

Constructor Details

This class inherits a constructor from Byebug::Command

Class Method Details

.descriptionObject


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# File 'lib/byebug/commands/frame.rb', line 197

def description
  prettify <<-EOD
    f[rame][ frame-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.
  EOD
end

.namesObject


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# File 'lib/byebug/commands/frame.rb', line 193

def names
  %w(frame)
end

Instance Method Details

#executeObject


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# File 'lib/byebug/commands/frame.rb', line 180

def execute
  unless @match[1]
    print(pr('frame.line', get_pr_arguments(@state.frame)))
    return
  end

  pos, err = get_int(@match[1], 'Frame')
  return errmsg(err) unless pos

  adjust_frame(pos, true)
end

#regexpObject


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# File 'lib/byebug/commands/frame.rb', line 176

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