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-prolog.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 public/prism/prism-prolog.js

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

diff --git a/public/prism/prism-prolog.js b/public/prism/prism-prolog.js
new file mode 100644
index 0000000..412897f
--- /dev/null
+++ b/public/prism/prism-prolog.js
@@ -0,0 +1,19 @@
+Prism.languages.prolog = {
+  // Syntax depends on the implementation
+  comment: {
+    pattern: /\/\*[\s\S]*?\*\/|%.*/,
+    greedy: true,
+  },
+  // Depending on the implementation, strings may allow escaped newlines and quote-escape
+  string: {
+    pattern: /(["'])(?:\1\1|\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1(?!\1)/,
+    greedy: true,
+  },
+  builtin: /\b(?:fx|fy|xf[xy]?|yfx?)\b/,
+  // FIXME: Should we list all null-ary predicates (not followed by a parenthesis) like halt, trace, etc.?
+  function: /\b[a-z]\w*(?:(?=\()|\/\d+)/,
+  number: /\b\d+(?:\.\d*)?/,
+  // Custom operators are allowed
+  operator: /[:\\=><\-?*@\/;+^|!$.]+|\b(?:is|mod|not|xor)\b/,
+  punctuation: /[(){}\[\],]/,
+};
-- 
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