skel update

1 files changed, 42 insertions, 1 deletions

diff --git a/macro.h b/macro.h
index c91b8cf..5a55e10 100644
--- a/macro.h
+++ b/macro.h
@@ -4,7 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#define _new(t)		memset(malloc(sizeof(t)), 0, sizeof(t))
+#define _new(T, ...)	({ T __v = { __VA_ARGS__ }; _copy(&__v); })
 
 #define _copy(p, ...)	_copy_(p, ## __VA_ARGS__, sizeof(*p))
 #define _copy_(p, n, ...)	memcpy(malloc(n), p, n)
@@ -22,4 +22,45 @@
 	int UNIQ(defer_var) __cleanup(UNIQ(defer_func));		\
 	void UNIQ(defer_func)(int *p __unused)
 
+static __unused void __let_nothing(void)
+{
+}
+
+#define let(p, e, ...) let_(p, e, ## __VA_ARGS__, __let_nothing)
+#define let_(p, e, f, ...)						\
+	for (int step = 1; step; )					\
+	for (typeof(e) p = e; step; f(p), step = 0)
+
+static inline int lenv(void **pp)
+{
+	int count = 0;
+
+	if (pp) {
+		for (; *pp; pp++)
+			count++;
+	}
+
+	return count;
+}
+
+#define lenv(v) lenv((void **) v)
+
+static inline void **addv(void ***v, void *p)
+{
+	if (! v) {
+		*v = calloc(2, sizeof(*v));
+		**v = p;
+	} else {
+		int len = lenv(*v);
+
+		*v = realloc(*v, sizeof(*v) * (len + 2));
+		(*v)[len] = p;
+		(*v)[len + 1] = NULL;
+	}
+
+	return *v;
+}
+
+#define addv(v, p) addv((void ***) v, p)
+
 #endif