From 1cc7990ef7d5483d0434dda412f2d88e0b17df27 Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Sat, 20 Apr 2024 03:39:40 +0300
Subject: initial working bytecode

---
 src/vec.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 src/vec.c

(limited to 'src/vec.c')

diff --git a/src/vec.c b/src/vec.c
new file mode 100644
index 0000000..3fc2d7d
--- /dev/null
+++ b/src/vec.c
@@ -0,0 +1,75 @@
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+#include <posthaste/vec.h>
+
+struct vec vec_create(size_t ns)
+{
+	return (struct vec) {
+		       .n = 0,
+		       .s = 1,
+		       .ns = ns,
+		       .buf = malloc(ns),
+	};
+}
+
+size_t vec_len(struct vec *v)
+{
+	return v->n;
+}
+
+void *vec_at(struct vec *v, size_t i)
+{
+	assert(i < v->n && "out of vector bounds");
+	return v->buf + i * v->ns;
+}
+
+void *vec_back(struct vec *v)
+{
+	assert(v->n);
+	return v->buf + (v->n - 1) * v->ns;
+}
+
+void *vec_pop(struct vec *v)
+{
+	assert(v->n && "attempting to pop empty vector");
+	v->n--;
+	return v->buf + v->n * v->ns;
+}
+
+void vec_append(struct vec *v, void *n)
+{
+	v->n++;
+	if (v->n >= v->s) {
+		v->s *= 2;
+		v->buf = realloc(v->buf, v->s * v->ns);
+	}
+
+	void *p = vec_at(v, v->n - 1);
+	memcpy(p, n, v->ns);
+}
+
+void vec_reset(struct vec *v)
+{
+	v->n = 0;
+}
+
+void vec_reserve(struct vec *v, size_t n)
+{
+	if (v->n >= n)
+		return;
+
+	v->n = n;
+	v->s = n;
+	v->buf = realloc(v->buf, v->s * v->ns);
+}
+
+void vec_destroy(struct vec *v) {
+	free(v->buf);
+}
+
+void vec_sort(struct vec *v, vec_comp_t comp)
+{
+	qsort(v->buf, v->n, v->ns, comp);
+}
-- 
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