From: Arthur Cohen <arthur.co...@embecosm.com>
gcc/rust/ChangeLog:
* ast/rust-ast.h (reconstruct): New function for calling the
`reconstruct_*_impl` method
and asserting that the new NodeId is different, and then wrap it in a
unique_ptr<T>.
(reconstruct_vec): Likewise, but for vectors of unique_ptr<T>
---
gcc/rust/ast/rust-ast.h | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/gcc/rust/ast/rust-ast.h b/gcc/rust/ast/rust-ast.h
index cd586c6aa7d..1cc10c90ee8 100644
--- a/gcc/rust/ast/rust-ast.h
+++ b/gcc/rust/ast/rust-ast.h
@@ -83,6 +83,42 @@ public:
virtual void accept_vis (ASTVisitor &vis) = 0;
};
+/**
+ * Base function for reconstructing and asserting that the new NodeId is
+ * different from the old NodeId. It then wraps the given pointer into a unique
+ * pointer and returns it.
+ */
+template <typename T, typename F>
+std::unique_ptr<T>
+reconstruct (const T *instance, F method)
+{
+ auto *reconstructed = (instance->*method) ();
+
+ rust_assert (reconstructed->get_node_id () != instance->get_node_id ());
+
+ return std::unique_ptr<T> (reconstructed);
+}
+
+/**
+ * Reconstruct multiple items in a vector
+ */
+template <typename T, typename F>
+std::vector<std::unique_ptr<T>>
+reconstruct_vec (const std::vector<std::unique_ptr<T>> &to_reconstruct,
+ F method)
+{
+ std::vector<std::unique_ptr<T>> reconstructed;
+
+ for (const auto &elt : to_reconstruct)
+ {
+ auto new_elt = (elt.get ()->*method) ();
+
+ reconstructed.emplace_back (std::move (new_elt));
+ }
+
+ return reconstructed;
+}
+
// Delimiter types - used in macros and whatever.
enum DelimType
{
--
2.49.0
