1 files changed, 33 insertions, 0 deletions
diff --git a/string.c b/string.c
new file mode 100644
index 0000000..509163f
--- /dev/null
+++ b/string.c
@@ -0,0 +1,33 @@
+#include "string.h"
+
+#include <stdint.h>
+#include <string.h>
+
+#include "memory.h"
+
+Str *Str_new(Arena *a, uintptr_t len) {
+  Str *s = new (a, Str, 1);
+  s->data = new (a, char, len);
+  return s;
+}
+
+int Str_equals(Str a, Str b) {
+  return (a.len == b.len) && (!a.len || !memcmp(a.data, b.data, a.len));
+}
+
+uint64_t Str_hash64(Str s) {
+  uint64_t h = 0x100;
+  for (ptrdiff_t i = 0; i < s.len; i++) {
+    h ^= s.data[i] & 255;
+    h *= 1111111111111111111;
+  }
+  return h;
+}
+
+Str Str_copy(Arena *a, char *data, uintptr_t len) {
+  Str str = {0};
+  str.data = new (a, char, len);
+  if (str.len)
+    memcpy(str.data, data, len);
+  return str;
+}