1 files changed, 38 insertions, 0 deletions
diff --git a/packages/astro-parser/src/parse/state/codefence.ts b/packages/astro-parser/src/parse/state/codefence.ts
new file mode 100644
index 000000000..d5b498a0f
--- /dev/null
+++ b/packages/astro-parser/src/parse/state/codefence.ts
@@ -0,0 +1,38 @@
+// @ts-nocheck
+import { Parser } from '../index.js';
+
+export default function codefence(parser: Parser) {
+  const start = parser.index;
+  const open = parser.match_regex(/[`~]{3,}/);
+  parser.index += open!.length;
+
+  let raw = open + '';
+
+  while (parser.index < parser.template.length && !parser.match(open)) {
+    raw += parser.template[parser.index++];
+  }
+
+  parser.eat(open, true);
+  raw += open;
+  const trailingWhitespace = parser.read_until(/\S/);
+  const { metadata, data } = extractCodeFence(raw);
+
+  const node = {
+    start,
+    end: parser.index,
+    type: 'CodeFence',
+    raw: `${raw}` + trailingWhitespace,
+    metadata,
+    data
+  };
+
+  parser.current().children.push(node);
+}
+
+/** Extract attributes on first line */
+function extractCodeFence(str: string) {
+  const [_, leadingLine] = str.match(/(^[^\n]*\r?\n)/m) ?? ['', ''];
+  const metadata = leadingLine.trim();
+  const data = str.slice(leadingLine.length);
+  return { metadata, data };
+}