gccrs: rib: Add Namespace enum

gcc/rust/ChangeLog:

	* resolve/rust-rib.h: Add Namespace enum.

1 files changed, 25 insertions, 0 deletions

diff --git a/gcc/rust/resolve/rust-rib.h b/gcc/rust/resolve/rust-rib.h
index 37bd90f..4ffd00a 100644
--- a/gcc/rust/resolve/rust-rib.h
+++ b/gcc/rust/resolve/rust-rib.h
@@ -28,6 +28,31 @@ namespace Rust {
 namespace Resolver2_0 {
 
 /**
+
+pub enum Namespace {
+   /// The type namespace includes `struct`s, `enum`s, `union`s, `trait`s, and
+`mod`s
+   /// (and, by extension, crates).
+   ///
+   /// Note that the type namespace includes other items; this is not an
+   /// exhaustive list.
+   TypeNS,
+   /// The value namespace includes `fn`s, `const`s, `static`s, and local
+variables (including function arguments). ValueNS,
+   /// The macro namespace includes `macro_rules!` macros, declarative `macro`s,
+   /// procedural macros, attribute macros, `derive` macros, and non-macro
+attributes
+   /// like `#[inline]` and `#[rustfmt::skip]`.
+   MacroNS,
+}
+
+*/
+
+// FIXME: There's no `labels` namespace, not sure if we need one or how to keep
+// one
+// FIXME: And where are things like loop labels kept?
+
+/**
  * All namespaces that Rust's name resolution needs to handle
  */
 // TODO: Move to `rust-forever-stack.h`?