chore: add prismjs for syntax highlighting

1 files changed, 68 insertions, 0 deletions

diff --git a/public/prism/prism-antlr4.js b/public/prism/prism-antlr4.js
new file mode 100644
index 0000000..f7fcc78
--- /dev/null
+++ b/public/prism/prism-antlr4.js
@@ -0,0 +1,68 @@
+Prism.languages.antlr4 = {
+  comment: /\/\/.*|\/\*[\s\S]*?(?:\*\/|$)/,
+  string: {
+    pattern: /'(?:\\.|[^\\'\r\n])*'/,
+    greedy: true,
+  },
+  'character-class': {
+    pattern: /\[(?:\\.|[^\\\]\r\n])*\]/,
+    greedy: true,
+    alias: 'regex',
+    inside: {
+      range: {
+        pattern: /([^[]|(?:^|[^\\])(?:\\\\)*\\\[)-(?!\])/,
+        lookbehind: true,
+        alias: 'punctuation',
+      },
+      escape:
+        /\\(?:u(?:[a-fA-F\d]{4}|\{[a-fA-F\d]+\})|[pP]\{[=\w-]+\}|[^\r\nupP])/,
+      punctuation: /[\[\]]/,
+    },
+  },
+  action: {
+    pattern: /\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{[^{}]*\})*\})*\})*\}/,
+    greedy: true,
+    inside: {
+      content: {
+        // this might be C, C++, Python, Java, C#, or any other language ANTLR4 compiles to
+        pattern: /(\{)[\s\S]+(?=\})/,
+        lookbehind: true,
+      },
+      punctuation: /[{}]/,
+    },
+  },
+  command: {
+    pattern:
+      /(->\s*(?!\s))(?:\s*(?:,\s*)?\b[a-z]\w*(?:\s*\([^()\r\n]*\))?)+(?=\s*;)/i,
+    lookbehind: true,
+    inside: {
+      function: /\b\w+(?=\s*(?:[,(]|$))/,
+      punctuation: /[,()]/,
+    },
+  },
+  annotation: {
+    pattern: /@\w+(?:::\w+)*/,
+    alias: 'keyword',
+  },
+  label: {
+    pattern: /#[ \t]*\w+/,
+    alias: 'punctuation',
+  },
+  keyword:
+    /\b(?:catch|channels|finally|fragment|grammar|import|lexer|locals|mode|options|parser|returns|throws|tokens)\b/,
+  definition: [
+    {
+      pattern: /\b[a-z]\w*(?=\s*:)/,
+      alias: ['rule', 'class-name'],
+    },
+    {
+      pattern: /\b[A-Z]\w*(?=\s*:)/,
+      alias: ['token', 'constant'],
+    },
+  ],
+  constant: /\b[A-Z][A-Z_]*\b/,
+  operator: /\.\.|->|[|~]|[*+?]\??/,
+  punctuation: /[;:()=]/,
+};
+
+Prism.languages.g4 = Prism.languages.antlr4;