chore: add prismjs for syntax highlighting

1 files changed, 55 insertions, 0 deletions

diff --git a/public/prism/prism-crystal.js b/public/prism/prism-crystal.js
new file mode 100644
index 0000000..a84b288
--- /dev/null
+++ b/public/prism/prism-crystal.js
@@ -0,0 +1,55 @@
+(function (Prism) {
+  Prism.languages.crystal = Prism.languages.extend('ruby', {
+    keyword: [
+      /\b(?:__DIR__|__END_LINE__|__FILE__|__LINE__|abstract|alias|annotation|as|asm|begin|break|case|class|def|do|else|elsif|end|ensure|enum|extend|for|fun|if|ifdef|include|instance_sizeof|lib|macro|module|next|of|out|pointerof|private|protected|ptr|require|rescue|return|select|self|sizeof|struct|super|then|type|typeof|undef|uninitialized|union|unless|until|when|while|with|yield)\b/,
+      {
+        pattern: /(\.\s*)(?:is_a|responds_to)\?/,
+        lookbehind: true,
+      },
+    ],
+    number:
+      /\b(?:0b[01_]*[01]|0o[0-7_]*[0-7]|0x[\da-fA-F_]*[\da-fA-F]|(?:\d(?:[\d_]*\d)?)(?:\.[\d_]*\d)?(?:[eE][+-]?[\d_]*\d)?)(?:_(?:[uif](?:8|16|32|64))?)?\b/,
+    operator: [/->/, Prism.languages.ruby.operator],
+    punctuation: /[(){}[\].,;\\]/,
+  });
+
+  Prism.languages.insertBefore('crystal', 'string-literal', {
+    attribute: {
+      pattern: /@\[.*?\]/,
+      inside: {
+        delimiter: {
+          pattern: /^@\[|\]$/,
+          alias: 'punctuation',
+        },
+        attribute: {
+          pattern: /^(\s*)\w+/,
+          lookbehind: true,
+          alias: 'class-name',
+        },
+        args: {
+          pattern: /\S(?:[\s\S]*\S)?/,
+          inside: Prism.languages.crystal,
+        },
+      },
+    },
+    expansion: {
+      pattern: /\{(?:\{.*?\}|%.*?%)\}/,
+      inside: {
+        content: {
+          pattern: /^(\{.)[\s\S]+(?=.\}$)/,
+          lookbehind: true,
+          inside: Prism.languages.crystal,
+        },
+        delimiter: {
+          pattern: /^\{[\{%]|[\}%]\}$/,
+          alias: 'operator',
+        },
+      },
+    },
+    char: {
+      pattern:
+        /'(?:[^\\\r\n]{1,2}|\\(?:.|u(?:[A-Fa-f0-9]{1,4}|\{[A-Fa-f0-9]{1,6}\})))'/,
+      greedy: true,
+    },
+  });
+})(Prism);