1 files changed, 64 insertions, 0 deletions
diff --git a/src/stdlib/bytes.c b/src/stdlib/bytes.c
new file mode 100644
index 00000000..b24a721b
--- /dev/null
+++ b/src/stdlib/bytes.c
@@ -0,0 +1,64 @@
+// The logic for unsigned bytes
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "bytes.h"
+#include "stdlib.h"
+#include "text.h"
+#include "util.h"
+
+public const Byte_t Byte$min = 0;
+public const Byte_t Byte$max = UINT8_MAX;
+
+PUREFUNC public Text_t Byte$as_text(const void *b, bool colorize, const TypeInfo_t*)
+{
+    if (!b) return Text("Byte");
+    return Text$format(colorize ? "\x1b[35m0x%02X\x1b[m" : "0x%02X", *(Byte_t*)b);
+}
+
+public Text_t Byte$hex(Byte_t byte, bool uppercase, bool prefix) {
+    struct Text_s text = {.tag=TEXT_ASCII};
+    text.ascii = GC_MALLOC_ATOMIC(8);
+    if (prefix && uppercase)
+        text.length = (int64_t)snprintf((char*)text.ascii, 8, "0x%02X", byte);
+    else if (prefix && !uppercase)
+        text.length = (int64_t)snprintf((char*)text.ascii, 8, "0x%02x", byte);
+    else if (!prefix && uppercase)
+        text.length = (int64_t)snprintf((char*)text.ascii, 8, "%02X", byte);
+    else if (!prefix && !uppercase)
+        text.length = (int64_t)snprintf((char*)text.ascii, 8, "%02x", byte);
+    return text;
+}
+
+public PUREFUNC Byte_t Byte$from_int(Int_t i, bool truncate) {
+    if unlikely (truncate && Int$compare_value(i, I_small(0xFF)) > 0)
+        fail("This value is too large to convert to a byte without truncation: %k", (Text_t[1]){Int$value_as_text(i)});
+     else if unlikely (truncate && Int$compare_value(i, I_small(0)) < 0)
+        fail("Negative values can't be converted to bytes: %k", (Text_t[1]){Int$value_as_text(i)});
+    return (i.small != 0);
+}
+public PUREFUNC Byte_t Byte$from_int64(Int64_t i, bool truncate) {
+    if unlikely (truncate && i != (Int64_t)(Byte_t)i)
+        fail("This value can't be converted to a byte without truncation: %ld", i);
+    return (Byte_t)i;
+}
+public PUREFUNC Byte_t Byte$from_int32(Int32_t i, bool truncate) {
+    if unlikely (truncate && i != (Int32_t)(Byte_t)i)
+        fail("This value can't be converted to a byte without truncation: %d", i);
+    return (Byte_t)i;
+}
+public PUREFUNC Byte_t Byte$from_int16(Int16_t i, bool truncate) {
+    if unlikely (truncate && i != (Int16_t)(Byte_t)i)
+        fail("This value can't be converted to a byte without truncation: %d", i);
+    return (Byte_t)i;
+}
+
+public const TypeInfo_t Byte$info = {
+    .size=sizeof(Byte_t),
+    .align=__alignof__(Byte_t),
+    .metamethods={
+        .as_text=Byte$as_text,
+    },
+};
+
+// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0