1 files changed, 58 insertions, 0 deletions
diff --git a/gcc/rust/hir/rust-ast-lower-pattern.h b/gcc/rust/hir/rust-ast-lower-pattern.h
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+++ b/gcc/rust/hir/rust-ast-lower-pattern.h
@@ -0,0 +1,58 @@
+// Copyright (C) 2020 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_AST_LOWER_PATTERN
+#define RUST_AST_LOWER_PATTERN
+
+#include "rust-ast-lower-base.h"
+#include "rust-diagnostics.h"
+
+namespace Rust {
+namespace HIR {
+
+class ASTLoweringPattern : public ASTLoweringBase
+{
+public:
+  static HIR::Pattern *translate (AST::Pattern *pattern)
+  {
+    ASTLoweringPattern resolver;
+    pattern->accept_vis (resolver);
+    return resolver.translated;
+  }
+
+  virtual ~ASTLoweringPattern () {}
+
+  void visit (AST::IdentifierPattern &pattern)
+  {
+    std::unique_ptr<Pattern> to_bind;
+    translated
+      = new HIR::IdentifierPattern (pattern.variable_ident,
+				    pattern.get_locus (), pattern.is_ref,
+				    pattern.is_mut, std::move (to_bind));
+  }
+
+private:
+  ASTLoweringPattern () : translated (nullptr) {}
+
+  HIR::Pattern *translated;
+};
+
+} // namespace HIR
+} // namespace Rust
+
+#endif // RUST_AST_LOWER_PATTERN