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This file is return.def, from which is created return.c.
It implements the builtin "return" in Bash.
Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash 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 1, or (at your option) any later
version.
Bash 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 Bash; see the file COPYING. If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
$PRODUCES return.c
$BUILTIN return
$FUNCTION return_builtin
$SHORT_DOC return [n]
Causes a function to exit with the return value specified by N. If N
is omitted, the return status is that of the last command.
$END
#include <config.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include "../shell.h"
#include "common.h"
extern int last_command_exit_value;
extern int return_catch_flag, return_catch_value;
/* If we are executing a user-defined function then exit with the value
specified as an argument. if no argument is given, then the last
exit status is used. */
int
return_builtin (list)
WORD_LIST *list;
{
return_catch_value = list ? get_numeric_arg (list) : last_command_exit_value;
if (return_catch_flag)
longjmp (return_catch, 1);
else
{
builtin_error ("can only `return' from a function or sourced script");
return (EXECUTION_FAILURE);
}
}
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