1 files changed, 18 insertions, 1 deletions
diff --git a/rust/macros/helpers.rs b/rust/macros/helpers.rs
index 563dcd2b7ace..3e04f8ecfc74 100644
--- a/rust/macros/helpers.rs
+++ b/rust/macros/helpers.rs
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 
-use proc_macro::{token_stream, Group, TokenStream, TokenTree};
+use proc_macro::{token_stream, Group, Ident, TokenStream, TokenTree};
 
 pub(crate) fn try_ident(it: &mut token_stream::IntoIter) -> Option<String> {
     if let Some(TokenTree::Ident(ident)) = it.next() {
@@ -215,3 +215,20 @@ pub(crate) fn parse_generics(input: TokenStream) -> (Generics, Vec<TokenTree>) {
         rest,
     )
 }
+
+/// Given a function declaration, finds the name of the function.
+pub(crate) fn function_name(input: TokenStream) -> Option<Ident> {
+    let mut input = input.into_iter();
+    while let Some(token) = input.next() {
+        match token {
+            TokenTree::Ident(i) if i.to_string() == "fn" => {
+                if let Some(TokenTree::Ident(i)) = input.next() {
+                    return Some(i);
+                }
+                return None;
+            }
+            _ => continue,
+        }
+    }
+    None
+}