gccrs: 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 39a0c08de79276ccd17c7d3da66cd37e05390b6b..fe0bc8a291b7087f26457a68f059f14faa32f195 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?
    */