diff options
Diffstat (limited to 'include/stc/priv/raii.h')
| -rw-r--r-- | include/stc/priv/raii.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/stc/priv/raii.h b/include/stc/priv/raii.h new file mode 100644 index 00000000..bb41e0d1 --- /dev/null +++ b/include/stc/priv/raii.h @@ -0,0 +1,27 @@ +#define c_defer(...) \ + for (int _i = 1; _i; _i = 0, __VA_ARGS__) + +#define c_with(...) c_MACRO_OVERLOAD(c_with, __VA_ARGS__) +#define c_with_2(declvar, drop) \ + for (declvar, *_i, **_ip = &_i; _ip; _ip = 0, drop) +#define c_with_3(declvar, pred, drop) \ + for (declvar, *_i, **_ip = &_i; _ip && (pred); _ip = 0, drop) + +#define c_scope(...) c_MACRO_OVERLOAD(c_scope, __VA_ARGS__) +#define c_scope_2(init, drop) \ + for (int _i = (init, 1); _i; _i = 0, drop) +#define c_scope_3(init, pred, drop) \ + for (int _i = (init, 1); _i && (pred); _i = 0, drop) + +#define c_auto(...) c_MACRO_OVERLOAD(c_auto, __VA_ARGS__) +#define c_auto_2(C, a) \ + c_with_2(C a = C##_init(), C##_drop(&a)) +#define c_auto_3(C, a, b) \ + c_with_2(c_EXPAND(C a = C##_init(), b = C##_init()), \ + (C##_drop(&b), C##_drop(&a))) +#define c_auto_4(C, a, b, c) \ + c_with_2(c_EXPAND(C a = C##_init(), b = C##_init(), c = C##_init()), \ + (C##_drop(&c), C##_drop(&b), C##_drop(&a))) +#define c_auto_5(C, a, b, c, d) \ + c_with_2(c_EXPAND(C a = C##_init(), b = C##_init(), c = C##_init(), d = C##_init()), \ + (C##_drop(&d), C##_drop(&c), C##_drop(&b), C##_drop(&a))) |