1 files changed, 7 insertions, 0 deletions
diff --git a/src/tools/rustfmt/src/formatting/generated.rs b/src/tools/rustfmt/src/formatting/generated.rs
new file mode 100644
index 000000000..58f43f17e
--- /dev/null
+++ b/src/tools/rustfmt/src/formatting/generated.rs
@@ -0,0 +1,7 @@
+/// Returns `true` if the given span is a part of generated files.
+pub(super) fn is_generated_file(original_snippet: &str) -> bool {
+    original_snippet
+        .lines()
+        .take(5) // looking for marker only in the beginning of the file
+        .any(|line| line.contains("@generated"))
+}