1 files changed, 67 insertions, 0 deletions
diff --git a/gcc/rust/backend/rust-compile-fnparam.h b/gcc/rust/backend/rust-compile-fnparam.h
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+++ b/gcc/rust/backend/rust-compile-fnparam.h
@@ -0,0 +1,67 @@
+// 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_COMPILE_FNPARAM
+#define RUST_COMPILE_FNPARAM
+
+#include "rust-compile-base.h"
+
+namespace Rust {
+namespace Compile {
+
+class CompileFnParam : public HIRCompileBase
+{
+public:
+  static Bvariable *compile (Context *ctx, Bfunction *fndecl,
+			     HIR::FunctionParam *param, Btype *decl_type,
+			     Location locus)
+  {
+    CompileFnParam compiler (ctx, fndecl, decl_type, locus);
+    param->get_param_name ()->accept_vis (compiler);
+    return compiler.translated;
+  }
+
+  void visit (HIR::IdentifierPattern &pattern)
+  {
+    if (!pattern.is_mut)
+      decl_type = ctx->get_backend ()->immutable_type (decl_type);
+
+    translated
+      = ctx->get_backend ()->parameter_variable (fndecl, pattern.variable_ident,
+						 decl_type,
+						 false /* address_taken */,
+						 locus);
+  }
+
+private:
+  CompileFnParam (Context *ctx, ::Bfunction *fndecl, ::Btype *decl_type,
+		  Location locus)
+    : HIRCompileBase (ctx), fndecl (fndecl), decl_type (decl_type),
+      locus (locus), translated (nullptr)
+  {}
+
+  ::Bfunction *fndecl;
+  ::Btype *decl_type;
+  Location locus;
+  ::Bvariable *translated;
+};
+
+} // namespace Compile
+} // namespace Rust
+
+#endif // RUST_COMPILE_FNPARAM