1 files changed, 65 insertions, 0 deletions
diff --git a/v_windows/v/vlib/builtin/rune.v b/v_windows/v/vlib/builtin/rune.v
new file mode 100644
index 0000000..3364d90
--- /dev/null
+++ b/v_windows/v/vlib/builtin/rune.v
@@ -0,0 +1,65 @@
+// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
+module builtin
+
+import strings
+
+// This was never working correctly, the issue is now
+// fixed however the type checks in checker need to be
+// updated. if you uncomment it you will see the issue
+// type rune = int
+
+pub fn (c rune) str() string {
+	return utf32_to_str(u32(c))
+	/*
+	unsafe {
+		fst_byte := int(c)>>8 * 3 & 0xff
+		len := utf8_char_len(byte(fst_byte))
+		println('len=$len')
+		mut str := string{
+			len: len
+			str: malloc(len + 1)
+		}
+		for i in 0..len {
+			str.str[i] = byte(int(c)>>8 * (3 - i) & 0xff)
+		}
+		str.str[len] = `\0`
+		println(str)
+		return str
+	}
+	*/
+}
+
+// string converts a rune array to a string
+[manualfree]
+pub fn (ra []rune) string() string {
+	mut sb := strings.new_builder(ra.len)
+	sb.write_runes(ra)
+	res := sb.str()
+	unsafe { sb.free() }
+	return res
+}
+
+// Define this on byte as well, so that we can do `s[0].is_capital()`
+pub fn (c byte) is_capital() bool {
+	return c >= `A` && c <= `Z`
+}
+
+pub fn (b []byte) clone() []byte {
+	mut res := []byte{len: b.len}
+	// mut res := make([]byte, {repeat:b.len})
+	for i in 0 .. b.len {
+		res[i] = b[i]
+	}
+	return res
+}
+
+// TODO: remove this once runes are implemented
+pub fn (b []byte) bytestr() string {
+	unsafe {
+		buf := malloc_noscan(b.len + 1)
+		vmemcpy(buf, b.data, b.len)
+		buf[b.len] = 0
+		return tos(buf, b.len)
+	}
+}