Merge #1631

1631: Ast dump where clause r=CohenArthur a=jdupak

Adds dump of the where clause and recursively needed nodes.
Adds visitor compatibility layer for general references except for unique pointers - needed for lifetimes. The enable is necessary to coexist with the unique_ptr overload.

Depends on #1624 and will be rebased when it is merged. 

Co-authored-by: Jakub Dupak <dev@jakubdupak.com>

1 files changed, 10 insertions, 3 deletions

diff --git a/gcc/rust/ast/rust-ast-dump.h b/gcc/rust/ast/rust-ast-dump.h
index 13c9212..2bd3b31 100644
--- a/gcc/rust/ast/rust-ast-dump.h
+++ b/gcc/rust/ast/rust-ast-dump.h
@@ -81,6 +81,11 @@ private:
   template <typename T> void visit (std::unique_ptr<T> &node);
 
   /**
+   * @see visit<std::unique_ptr<T>>
+   */
+  template <typename T> void visit (T &node);
+
+  /**
    * Visit all items in given @collection, placing the separator in between but
    * not at the end.
    * Start and end offset allow to visit only a "slice" from the collection.
@@ -122,14 +127,16 @@ private:
 			      std::unique_ptr<BlockExpr> &block);
 
   void visit (FunctionParam &param);
-  void visit (const Attribute &attrib);
-  void visit (const Visibility &vis);
+  void visit (Attribute &attrib);
+  void visit (Visibility &vis);
   void visit (std::vector<std::unique_ptr<GenericParam>> &params);
   void visit (TupleField &field);
   void visit (StructField &field);
-  void visit (const SimplePathSegment &segment);
+  void visit (SimplePathSegment &segment);
   void visit (NamedFunctionParam &param);
   void visit (MacroRule &rule);
+  void visit (WhereClause &rule);
+  void visit (std::vector<LifetimeParam> &for_lifetimes);
 
   // rust-ast.h
   void visit (Token &tok);