From 771e9850fcfd439aebf4310819c7c551c70631b4 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Fri, 26 Jan 2024 18:30:39 +0100
Subject: [PATCH] unicode: export bidi details

---
 unicode/ucd.ha | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/unicode/ucd.ha b/unicode/ucd.ha
index 36acbc5..9bcdb3b 100644
--- a/unicode/ucd.ha
+++ b/unicode/ucd.ha
@@ -94,6 +94,39 @@ export fn gc_code(v: gc) const str = {
 	};
 };
 
+// Bidirectional classification.
+export type bidi = enum u8 {
+	UNKNOWN,
+	L,
+	LRE,
+	LRO,
+	R,
+	AL,
+	RLE,
+	RLO,
+	PDF,
+	EN,
+	ES,
+	ET,
+	AN,
+	CS,
+	NSM,
+	BN,
+	B,
+	S,
+	WS,
+	ON,
+	LRI,
+	RLI,
+	FSI,
+	PDI,
+};
+
+// Returns the [[bidi]] classification corresponding to this rune.
+export fn rune_bidi(rn: rune) bidi = {
+	return get_ucdrecord(rn).bidirectional: bidi;
+};
+
 // Unicode character Script attribute.
 export type script = enum u16 {
 	COMMON,			// Zyyy