1 /* Exception definitions. 2 3 Copyright (C) 2016, 2017 Paul Boddie <paul@boddie.org.uk> 4 5 This program is free software; you can redistribute it and/or modify it under 6 the terms of the GNU General Public License as published by the Free Software 7 Foundation; either version 3 of the License, or (at your option) any later 8 version. 9 10 This program is distributed in the hope that it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 12 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 13 details. 14 15 You should have received a copy of the GNU General Public License along with 16 this program. If not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #ifndef __EXCEPTIONS_H__ 20 #define __EXCEPTIONS_H__ 21 22 #include "cexcept.h" 23 #include "types.h" 24 25 /* Define the exception type. */ 26 27 typedef struct 28 { 29 __attr arg; 30 unsigned char raising:1; 31 unsigned char raising_else:1; 32 unsigned char completing:1; 33 } __exc; 34 35 define_exception_type(__exc); 36 #undef define_exception_type 37 38 extern struct __exception_context __the_exception_context[1]; 39 40 /* More specific macros. */ 41 42 #define __Raise(value) __Throw ((__exc) {value, 1, 0, 0}) 43 #define __RaiseElse(value) __Throw ((__exc) {value, 0, 1, 0}) 44 #define __Return(value) __Throw ((__exc) {value, 0, 0, 1}) 45 #define __Complete __Throw((__exc) {__NULL, 0, 0, 1}) 46 47 #endif /* __EXCEPTIONS_H__ */