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ea0efa173b
This is needed for shared/idmap as external packages consuming shared/idmap need a way to pull the cgo code too. Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
70 lines
3.2 KiB
C
70 lines
3.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#ifndef __INCUS_ERROR_UTILS_H
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#define __INCUS_ERROR_UTILS_H
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#include "config.h"
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#include <stdbool.h>
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#include "macro.h"
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/* Taken from Lennart tyvm. */
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#define CASE_F(X) case X:
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#define CASE_F_1(CASE, X) CASE_F(X)
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#define CASE_F_2(CASE, X, ...) CASE(X) CASE_F_1(CASE, __VA_ARGS__)
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#define CASE_F_3(CASE, X, ...) CASE(X) CASE_F_2(CASE, __VA_ARGS__)
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#define CASE_F_4(CASE, X, ...) CASE(X) CASE_F_3(CASE, __VA_ARGS__)
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#define CASE_F_5(CASE, X, ...) CASE(X) CASE_F_4(CASE, __VA_ARGS__)
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#define CASE_F_6(CASE, X, ...) CASE(X) CASE_F_5(CASE, __VA_ARGS__)
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#define CASE_F_7(CASE, X, ...) CASE(X) CASE_F_6(CASE, __VA_ARGS__)
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#define CASE_F_8(CASE, X, ...) CASE(X) CASE_F_7(CASE, __VA_ARGS__)
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#define CASE_F_9(CASE, X, ...) CASE(X) CASE_F_8(CASE, __VA_ARGS__)
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#define CASE_F_10(CASE, X, ...) CASE(X) CASE_F_9(CASE, __VA_ARGS__)
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#define CASE_F_11(CASE, X, ...) CASE(X) CASE_F_10(CASE, __VA_ARGS__)
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#define CASE_F_12(CASE, X, ...) CASE(X) CASE_F_11(CASE, __VA_ARGS__)
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#define CASE_F_13(CASE, X, ...) CASE(X) CASE_F_12(CASE, __VA_ARGS__)
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#define CASE_F_14(CASE, X, ...) CASE(X) CASE_F_13(CASE, __VA_ARGS__)
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#define CASE_F_15(CASE, X, ...) CASE(X) CASE_F_14(CASE, __VA_ARGS__)
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#define CASE_F_16(CASE, X, ...) CASE(X) CASE_F_15(CASE, __VA_ARGS__)
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#define CASE_F_17(CASE, X, ...) CASE(X) CASE_F_16(CASE, __VA_ARGS__)
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#define CASE_F_18(CASE, X, ...) CASE(X) CASE_F_17(CASE, __VA_ARGS__)
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#define CASE_F_19(CASE, X, ...) CASE(X) CASE_F_18(CASE, __VA_ARGS__)
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#define CASE_F_20(CASE, X, ...) CASE(X) CASE_F_19(CASE, __VA_ARGS__)
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#define GET_CASE_F(_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20,NAME,...) NAME
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#define FOR_EACH_MAKE_CASE(...) \
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GET_CASE_F(__VA_ARGS__,CASE_F_20,CASE_F_19,CASE_F_18,CASE_F_17,CASE_F_16,CASE_F_15,CASE_F_14,CASE_F_13,CASE_F_12,CASE_F_11, \
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CASE_F_10,CASE_F_9,CASE_F_8,CASE_F_7,CASE_F_6,CASE_F_5,CASE_F_4,CASE_F_3,CASE_F_2,CASE_F_1) \
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(CASE_F,__VA_ARGS__)
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#define XCONCATENATE(x, y) x ## y
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#define CONCATENATE(x, y) XCONCATENATE(x, y)
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#define assert_static(expr) \
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struct CONCATENATE(_assert_struct_, __COUNTER__) { \
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char x[(expr) ? 0 : -1]; \
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}
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#define IN_SET(x, ...) \
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({ \
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bool _found = false; \
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static const long double __assert_in_set[] __unused = { \
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__VA_ARGS__}; \
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assert_static(ARRAY_SIZE(__assert_in_set) <= 20); \
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switch (x) { \
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FOR_EACH_MAKE_CASE(__VA_ARGS__) \
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_found = true; \
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break; \
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default: \
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break; \
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} \
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_found; \
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})
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static inline bool ERRNO_IS_NOT_SUPPORTED(int r) {
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return IN_SET(abs(r), EOPNOTSUPP, ENOSYS);
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}
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#endif /* __INCUS_ERROR_UTILS_H */
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