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# frozen_string_literal: true
require "pathname"
require_relative "../command"
require_relative "../helpers/frame"
require_relative "../helpers/parse"
module Byebug
#
# Move to specific frames in the backtrace.
#
class FrameCommand < Command
include Helpers::FrameHelper
include Helpers::ParseHelper
self.allow_in_post_mortem = true
def self.regexp
/^\s* f(?:rame)? (?:\s+(\S+))? \s*$/x
end
def self.description
<<-DESCRIPTION
f[rame][ frame-number]
#{short_description}
If a frame number has been specified, to moves to that frame. Otherwise
it moves to the newest frame.
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.
Use the "bt" command to find out where you want to go.
DESCRIPTION
end
def self.short_description
"Moves to a frame in the call stack"
end
def execute
return print(pr("frame.line", context.frame.to_hash)) unless @match[1]
pos, err = get_int(@match[1], "Frame")
return errmsg(err) unless pos
switch_to_frame(pos)
ListCommand.new(processor).execute if Setting[:autolist]
end
end
end
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