From c209658d1cb855e6fe610332b7dbc0ff5ac82b81 Mon Sep 17 00:00:00 2001
From: Jamie Thompson <bishbashboshjt@gmail.com>
Date: Thu, 22 Jun 2023 11:07:05 +0200
Subject: [PATCH] highlight using directives in code snippets

---
 resources/js/hljs-scala3.js | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/resources/js/hljs-scala3.js b/resources/js/hljs-scala3.js
index 0ba80087ef..e0be3758b8 100644
--- a/resources/js/hljs-scala3.js
+++ b/resources/js/hljs-scala3.js
@@ -221,6 +221,33 @@ function highlightDotty(hljs) {
     ]
   }
 
+  // glob all non-whitespace characters as a "string"
+  const DIRECTIVE_VALUE = {
+    className: 'string',
+    begin: /\S+/,
+  }
+
+  // glob all non-whitespace characters as a "type", so that we can highlight differently to values
+  const DIRECTIVE_KEY = {
+    className: 'type',
+    begin: /\S+/,
+  }
+
+  // directives
+  const USING_DIRECTIVE = hljs.COMMENT('//>', '\n', {
+    contains: [
+      {
+        begin: /using /,
+        end: /\s/,
+        keywords: 'using',
+        contains: [
+          DIRECTIVE_KEY
+        ]
+      },
+      DIRECTIVE_VALUE,
+    ]
+  })
+
   // Documentation
   const SCALADOC = hljs.COMMENT('/\\*\\*', '\\*/', {
     contains: [
@@ -454,6 +481,7 @@ function highlightDotty(hljs) {
       NUMBER,
       CHAR,
       STRING,
+      USING_DIRECTIVE,
       SCALADOC,
       hljs.C_LINE_COMMENT_MODE,
       hljs.C_BLOCK_COMMENT_MODE,