Merge branch 'master' into modified

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)))