From a98b5ea6fe8e8cc98a55e0fd793e6e8660ea31c1 Mon Sep 17 00:00:00 2001
From: Armand Philippot <git@armandphilippot.com>
Date: Thu, 30 Dec 2021 19:47:21 +0100
Subject: chore: add prismjs for syntax highlighting

---
 public/prism/prism-lilypond.js | 81 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 public/prism/prism-lilypond.js

(limited to 'public/prism/prism-lilypond.js')

diff --git a/public/prism/prism-lilypond.js b/public/prism/prism-lilypond.js
new file mode 100644
index 0000000..a9ceb1e
--- /dev/null
+++ b/public/prism/prism-lilypond.js
@@ -0,0 +1,81 @@
+(function (Prism) {
+  var schemeExpression =
+    /\((?:[^();"#\\]|\\[\s\S]|;.*(?!.)|"(?:[^"\\]|\\.)*"|#(?:\{(?:(?!#\})[\s\S])*#\}|[^{])|<expr>)*\)/
+      .source;
+  // allow for up to pow(2, recursivenessLog2) many levels of recursive brace expressions
+  // For some reason, this can't be 4
+  var recursivenessLog2 = 5;
+  for (var i = 0; i < recursivenessLog2; i++) {
+    schemeExpression = schemeExpression.replace(/<expr>/g, function () {
+      return schemeExpression;
+    });
+  }
+  schemeExpression = schemeExpression.replace(/<expr>/g, /[^\s\S]/.source);
+
+  var lilypond = (Prism.languages.lilypond = {
+    comment: /%(?:(?!\{).*|\{[\s\S]*?%\})/,
+    'embedded-scheme': {
+      pattern: RegExp(
+        /(^|[=\s])#(?:"(?:[^"\\]|\\.)*"|[^\s()"]*(?:[^\s()]|<expr>))/.source.replace(
+          /<expr>/g,
+          function () {
+            return schemeExpression;
+          }
+        ),
+        'm'
+      ),
+      lookbehind: true,
+      greedy: true,
+      inside: {
+        scheme: {
+          pattern: /^(#)[\s\S]+$/,
+          lookbehind: true,
+          alias: 'language-scheme',
+          inside: {
+            'embedded-lilypond': {
+              pattern: /#\{[\s\S]*?#\}/,
+              greedy: true,
+              inside: {
+                punctuation: /^#\{|#\}$/,
+                lilypond: {
+                  pattern: /[\s\S]+/,
+                  alias: 'language-lilypond',
+                  inside: null, // see below
+                },
+              },
+            },
+            rest: Prism.languages.scheme,
+          },
+        },
+        punctuation: /#/,
+      },
+    },
+    string: {
+      pattern: /"(?:[^"\\]|\\.)*"/,
+      greedy: true,
+    },
+    'class-name': {
+      pattern: /(\\new\s+)[\w-]+/,
+      lookbehind: true,
+    },
+    keyword: {
+      pattern: /\\[a-z][-\w]*/i,
+      inside: {
+        punctuation: /^\\/,
+      },
+    },
+    operator: /[=|]|<<|>>/,
+    punctuation: {
+      pattern:
+        /(^|[a-z\d])(?:'+|,+|[_^]?-[_^]?(?:[-+^!>._]|(?=\d))|[_^]\.?|[.!])|[{}()[\]<>^~]|\\[()[\]<>\\!]|--|__/,
+      lookbehind: true,
+    },
+    number: /\b\d+(?:\/\d+)?\b/,
+  });
+
+  lilypond['embedded-scheme'].inside['scheme'].inside[
+    'embedded-lilypond'
+  ].inside['lilypond'].inside = lilypond;
+
+  Prism.languages.ly = lilypond;
+})(Prism);
-- 
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