# -*- shell-script -*-
# gdb-like "next" (step through) commmand.
#
#   Copyright (C) 2008, 2010 Rocky Bernstein rocky@gnu.org
#
#   This program is free software; you can redistribute it and/or
#   modify it under the terms of the GNU General Public License as
#   published by the Free Software Foundation; either version 2, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#   General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; see the file COPYING.  If not, write to
#   the Free Software Foundation, 59 Temple Place, Suite 330, Boston,
#   MA 02111 USA.

# Sets whether or not to display command to be executed in debugger prompt.
# If yes, always show. If auto, show only if the same line is to be run
# but the command is different.

_Dbg_help_add next \
"next [COUNT]

Single step an statement skipping functions.

If COUNT is given, stepping occurs that many times before
stopping. Otherwise COUNT is one. COUNT an be an arithmetic
expression.

Functions and source'd files are not traced. This is in contrast to
\"step\". See also \"skip\"." 1

# Next command
# $1 is command next+, next-, or next
# $2 is an optional additional count.
_Dbg_do_next() {

  _Dbg_not_running && return 1

  _Dbg_last_cmd="$_Dbg_cmd"
  _Dbg_last_next_step_cmd="$_Dbg_cmd"
  _Dbg_last_next_step_args="$@"

  typeset count=${1:-1}

  case "${_Dbg_last_next_step_cmd[-1,-1]}" in
      '+' ) _Dbg_step_force=1 ;;
      '-' ) _Dbg_step_force=0 ;;
      ''  ) _Dbg_step_force=$_Dbg_set_different ;;
      * ) ;;
  esac

  if [[ $count == [0-9]* ]] ; then
    _Dbg_step_ignore=${count:-1}
  else
    _Dbg_errmsg "Argument ($count) should be a number or nothing."
    _Dbg_step_ignore=1
    return 0
  fi

  _Dbg_write_journal_eval "_Dbg_return_level=${#_Dbg_frame_stack[@]}"
  _Dbg_write_journal "_Dbg_step_ignore=$_Dbg_step_ignore"
  _Dbg_write_journal "_Dbg_step_force=$_Dbg_step_force"
  _Dbg_continue_rc=0
  return 0
}

_Dbg_alias_add 'n'  'next'
