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Diffstat (limited to 'builtins/return.def')
-rw-r--r-- | builtins/return.def | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/builtins/return.def b/builtins/return.def new file mode 100644 index 0000000..23389c0 --- /dev/null +++ b/builtins/return.def @@ -0,0 +1,66 @@ +This file is return.def, from which is created return.c. +It implements the builtin "return" in Bash. + +Copyright (C) 1987-2003 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 2, 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, 59 Temple Place, Suite 330, Boston, MA 02111 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) +# ifdef _MINIX +# include <sys/types.h> +# endif +# include <unistd.h> +#endif + +#include "../bashintl.h" + +#include "../shell.h" +#include "common.h" + +extern int last_command_exit_value; +extern int subshell_environment; +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 = get_exitstat (list); + + if (return_catch_flag) + longjmp (return_catch, 1); + else + { + builtin_error (_("can only `return' from a function or sourced script")); + return (EXECUTION_FAILURE); + } +} |