Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/tests/ui/proc-macro/auxiliary/count_compound_ops.rs b/tests/ui/proc-macro/auxiliary/count_compound_ops.rs
new file mode 100644
index 000000000..3a656d648
--- /dev/null
+++ b/tests/ui/proc-macro/auxiliary/count_compound_ops.rs
@@ -0,0 +1,32 @@
+// force-host
+// no-prefer-dynamic
+
+#![feature(proc_macro_quote)]
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+
+use proc_macro::{TokenStream, TokenTree, Spacing, Literal, quote};
+
+#[proc_macro]
+pub fn count_compound_ops(input: TokenStream) -> TokenStream {
+    assert_eq!(count_compound_ops_helper(quote!(++ (&&) 4@a)), 3);
+    let l = Literal::u32_suffixed(count_compound_ops_helper(input));
+    TokenTree::from(l).into()
+}
+
+fn count_compound_ops_helper(input: TokenStream) -> u32 {
+    let mut count = 0;
+    for token in input {
+        match &token {
+            TokenTree::Punct(tt) if tt.spacing() == Spacing::Alone => {
+                count += 1;
+            }
+            TokenTree::Group(tt) => {
+                count += count_compound_ops_helper(tt.stream());
+            }
+            _ => {}
+        }
+    }
+    count
+}