1 files changed, 39 insertions, 0 deletions
diff --git a/tests/run-make/rustdoc-scrape-examples-macros/src/proc.rs b/tests/run-make/rustdoc-scrape-examples-macros/src/proc.rs
new file mode 100644
index 00000000000..46e518fdf6a
--- /dev/null
+++ b/tests/run-make/rustdoc-scrape-examples-macros/src/proc.rs
@@ -0,0 +1,39 @@
+extern crate proc_macro;
+use proc_macro::*;
+
+#[proc_macro]
+pub fn a_proc_macro(_item: TokenStream) -> TokenStream {
+    "fn ex() { foobar::f(); }".parse().unwrap()
+}
+
+// inserts foobar::f() to the end of the function
+#[proc_macro_attribute]
+pub fn an_attr_macro(attr: TokenStream, item: TokenStream) -> TokenStream {
+    let new_call: TokenStream = "foobar::f();".parse().unwrap();
+
+    let mut tokens = item.into_iter();
+
+    let fn_tok = tokens.next().unwrap();
+    let ident_tok = tokens.next().unwrap();
+    let args_tok = tokens.next().unwrap();
+    let body = match tokens.next().unwrap() {
+        TokenTree::Group(g) => {
+            let new_g = Group::new(g.delimiter(), new_call);
+            let mut outer_g = Group::new(
+                g.delimiter(),
+                [TokenTree::Group(g.clone()), TokenTree::Group(new_g)].into_iter().collect(),
+            );
+
+            if attr.to_string() == "with_span" {
+                outer_g.set_span(g.span());
+            }
+
+            TokenTree::Group(outer_g)
+        }
+        _ => unreachable!(),
+    };
+
+    let tokens = vec![fn_tok, ident_tok, args_tok, body].into_iter().collect::<TokenStream>();
+
+    tokens
+}