60 lines
1.7 KiB
Modula-2
60 lines
1.7 KiB
Modula-2
This file is return.def, from which is created return.c.
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It implements the builtin "return" in Bash.
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Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 1, or (at your option) any later
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version.
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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$PRODUCES return.c
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$BUILTIN return
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$FUNCTION return_builtin
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$SHORT_DOC return [n]
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Causes a function to exit with the return value specified by N. If N
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is omitted, the return status is that of the last command.
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$END
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#include <config.h>
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#include "../shell.h"
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#include "common.h"
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extern int last_command_exit_value;
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extern int return_catch_flag, return_catch_value;
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/* If we are executing a user-defined function then exit with the value
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specified as an argument. if no argument is given, then the last
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exit status is used. */
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int
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return_builtin (list)
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WORD_LIST *list;
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{
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return_catch_value = list ? get_numeric_arg (list, 1) : last_command_exit_value;
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if (return_catch_flag)
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longjmp (return_catch, 1);
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else
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{
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builtin_error ("can only `return' from a function or sourced script");
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return (EXECUTION_FAILURE);
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}
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}
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