Merge #9060

9060: feat: Diagnose unimplemented built-in macros r=matklad a=jonas-schievink

A number of built-in attribute macros are unsupported, I thought it might be useful to put a diagnostic on their definition in libcore. Not sure.

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

1 files changed, 24 insertions, 0 deletions

diff --git a/crates/hir/src/diagnostics.rs b/crates/hir/src/diagnostics.rs
index 22ec7c6ac..2cdbd172a 100644
--- a/crates/hir/src/diagnostics.rs
+++ b/crates/hir/src/diagnostics.rs
@@ -227,3 +227,27 @@ impl Diagnostic for MacroError {
         true
     }
 }
+
+#[derive(Debug)]
+pub struct UnimplementedBuiltinMacro {
+    pub file: HirFileId,
+    pub node: SyntaxNodePtr,
+}
+
+impl Diagnostic for UnimplementedBuiltinMacro {
+    fn code(&self) -> DiagnosticCode {
+        DiagnosticCode("unimplemented-builtin-macro")
+    }
+
+    fn message(&self) -> String {
+        "unimplemented built-in macro".to_string()
+    }
+
+    fn display_source(&self) -> InFile<SyntaxNodePtr> {
+        InFile::new(self.file, self.node.clone())
+    }
+
+    fn as_any(&self) -> &(dyn Any + Send + 'static) {
+        self
+    }
+}