stacked-contexts: Add peek() method

gcc/rust/ChangeLog:

	* util/rust-stacked-contexts.h: Add new method to see what context we are currently in.

diff --git a/gcc/rust/util/rust-stacked-contexts.h b/gcc/rust/util/rust-stacked-contexts.h
index 86cdf9f88d2aec8002c38d984840bc3f3e8c7543..d537d6ec451bfc7c6e27656d1e7de246a2ae63ee 100644 (file)
--- a/gcc/rust/util/rust-stacked-contexts.h
+++ b/gcc/rust/util/rust-stacked-contexts.h
@@ -71,6 +71,13 @@ public:
     return last;
   }
 
+  const T &peek ()
+  {
+    rust_assert (!stack.empty ());
+
+    return stack.back ();
+  }
+
   /**
    * Are we currently inside of a special context?
    */