Merge #6893

6893: Move to upstream `macro_rules!` model r=matklad a=jonas-schievink

This changes `macro_rules!` from being treated as a macro invocation to being a first-class item. It also disallows using an additional ident argument for regular macros, so `m! ident(...);` now fails to parse.

This matches upstream Rust, and makes the code somewhat simpler by removing repeated "is this a `macro_rules!` call" checks. It will also simplify allowing visibilities on macros, which is currently being proposed in https://github.com/rust-lang/rust/pull/78166.

Co-authored-by: Jonas Schievink <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/mbe/src/mbe_expander.rs b/crates/mbe/src/mbe_expander.rs
index 97bce0536..a80b73db4 100644
--- a/crates/mbe/src/mbe_expander.rs
+++ b/crates/mbe/src/mbe_expander.rs
@@ -163,7 +163,7 @@ mod tests {
     fn create_rules(macro_definition: &str) -> crate::MacroRules {
         let source_file = ast::SourceFile::parse(macro_definition).ok().unwrap();
         let macro_definition =
-            source_file.syntax().descendants().find_map(ast::MacroCall::cast).unwrap();
+            source_file.syntax().descendants().find_map(ast::MacroRules::cast).unwrap();
 
         let (definition_tt, _) =
             ast_to_token_tree(&macro_definition.token_tree().unwrap()).unwrap();