From 66c9ef99816708cb1ffedd3ec37e5622bf823c20 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Thu, 13 Jun 2024 11:52:30 +0100
Subject: Support style mapping for highlights

---
 lib/style-reader.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'lib/style-reader.js')

diff --git a/lib/style-reader.js b/lib/style-reader.js
index 38202f9..6305c59 100644
--- a/lib/style-reader.js
+++ b/lib/style-reader.js
@@ -159,6 +159,23 @@ function documentMatcherRule() {
     var strikethrough = identifierToConstant("strike", documentMatchers.strikethrough);
     var allCaps = identifierToConstant("all-caps", documentMatchers.allCaps);
     var smallCaps = identifierToConstant("small-caps", documentMatchers.smallCaps);
+
+    var highlight = sequence(
+        lop.rules.token("identifier", "highlight"),
+        lop.rules.sequence.capture(lop.rules.optional(lop.rules.sequence(
+            lop.rules.tokenOfType("open-square-bracket"),
+            lop.rules.sequence.cut(),
+            lop.rules.token("identifier", "color"),
+            lop.rules.tokenOfType("equals"),
+            lop.rules.sequence.capture(stringRule),
+            lop.rules.tokenOfType("close-square-bracket")
+        ).head()))
+    ).map(function(color) {
+        return documentMatchers.highlight({
+            color: color.valueOrElse(undefined)
+        });
+    });
+
     var commentReference = identifierToConstant("comment-reference", documentMatchers.commentReference);
 
     var breakMatcher = sequence(
@@ -191,6 +208,7 @@ function documentMatcherRule() {
         strikethrough,
         allCaps,
         smallCaps,
+        highlight,
         commentReference,
         breakMatcher
     );
-- 
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