1 files changed, 52 insertions, 0 deletions
diff --git a/gcc/rust/ast/rust-expression-yeast.h b/gcc/rust/ast/rust-expression-yeast.h
new file mode 100644
index 0000000..855918f
--- /dev/null
+++ b/gcc/rust/ast/rust-expression-yeast.h
@@ -0,0 +1,52 @@
+// Copyright (C) 2025 Free Software Foundation, Inc.
+
+// This file is part of GCC.
+
+// GCC is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 3, or (at your option) any later
+// version.
+
+// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+// for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with GCC; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#ifndef RUST_EXPRESSION_YEAST
+#define RUST_EXPRESSION_YEAST
+
+#include "rust-ast-visitor.h"
+#include "rust-ast.h"
+#include "rust-desugar-question-mark.h"
+
+namespace Rust {
+namespace AST {
+
+// This visitor takes care of all the expression desugars: try-blocks,
+// error-propagation, etc.
+class ExpressionYeast : public AST::DefaultASTVisitor
+{
+  using AST::DefaultASTVisitor::visit;
+
+public:
+  void go (AST::Crate &);
+
+private:
+  // Dispatch to the proper desugar
+  void dispatch (std::unique_ptr<Expr> &expr);
+  void dispatch_loops (std::unique_ptr<Expr> &loop_expr);
+
+  void visit (AST::ExprStmt &) override;
+  void visit (AST::CallExpr &) override;
+  void visit (AST::LetStmt &) override;
+  void visit (AST::BlockExpr &) override;
+};
+
+} // namespace AST
+} // namespace Rust
+
+#endif // ! RUST_EXPRESSION_YEAST