1 files changed, 52 insertions, 0 deletions
diff --git a/builtins/c_string.c b/builtins/c_string.c
new file mode 100644
index 00000000..f74d6da2
--- /dev/null
+++ b/builtins/c_string.c
@@ -0,0 +1,52 @@
+// Type info and methods for CString datatype (char*)
+#include <ctype.h>
+#include <err.h>
+#include <gc.h>
+#include <gc/cord.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "functions.h"
+#include "halfsiphash.h"
+#include "text.h"
+#include "types.h"
+#include "util.h"
+
+public CORD CString$as_text(const void *c_string, bool colorize, const TypeInfo *info)
+{
+    (void)info;
+    if (!c_string) return "CString";
+    CORD text = CORD_from_char_star(*(char**)c_string);
+    return CORD_all(colorize ? "\x1b[34mCString\x1b[m(" : "CString(", Text$quoted(text, colorize), ")");
+}
+
+public int CString$compare(const char **x, const char **y)
+{
+    if (!*x != !*y)
+        return (!*y) - (!*x);
+    return strcmp(*x, *y);
+}
+
+public bool CString$equal(const char **x, const char **y)
+{
+    return CString$compare(x, y) == 0;
+}
+
+public uint32_t CString$hash(const char **c_str)
+{
+    if (!*c_str) return 0;
+
+    uint32_t hash;
+    halfsiphash(*c_str, strlen(*c_str), TOMO_HASH_VECTOR, (uint8_t*)&hash, sizeof(hash));
+    return hash;
+}
+
+public const TypeInfo $CString = {
+    .size=sizeof(char*),
+    .align=__alignof__(char*),
+    .tag=CustomInfo,
+    .CustomInfo={.as_text=(void*)CString$as_text, .compare=(void*)CString$compare, .equal=(void*)CString$equal, .hash=(void*)CString$hash},
+};
+
+// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0