1 files changed, 78 insertions, 0 deletions
diff --git a/gcc/rust/backend/rust-compile-pattern.h b/gcc/rust/backend/rust-compile-pattern.h
new file mode 100644
index 0000000..e49f75c
--- /dev/null
+++ b/gcc/rust/backend/rust-compile-pattern.h
@@ -0,0 +1,78 @@
+// Copyright (C) 2020-2021 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/>.
+
+#include "rust-compile-base.h"
+
+namespace Rust {
+namespace Compile {
+
+class CompilePatternCaseLabelExpr : public HIRCompileBase
+{
+  using Rust::Compile::HIRCompileBase::visit;
+
+public:
+  static tree Compile (HIR::Pattern *pattern, tree associated_case_label,
+		       Context *ctx)
+  {
+    CompilePatternCaseLabelExpr compiler (ctx, associated_case_label);
+    pattern->accept_vis (compiler);
+    return compiler.case_label_expr;
+  }
+
+  void visit (HIR::PathInExpression &pattern) override;
+
+  void visit (HIR::StructPattern &pattern) override;
+
+  void visit (HIR::TupleStructPattern &pattern) override;
+
+private:
+  CompilePatternCaseLabelExpr (Context *ctx, tree associated_case_label)
+    : HIRCompileBase (ctx), case_label_expr (error_mark_node),
+      associated_case_label (associated_case_label)
+  {}
+
+  tree case_label_expr;
+  tree associated_case_label;
+};
+
+class CompilePatternBindings : public HIRCompileBase
+{
+  using Rust::Compile::HIRCompileBase::visit;
+
+public:
+  static void Compile (HIR::Pattern *pattern, tree match_scrutinee_expr,
+		       Context *ctx)
+  {
+    CompilePatternBindings compiler (ctx, match_scrutinee_expr);
+    pattern->accept_vis (compiler);
+  }
+
+  void visit (HIR::StructPattern &pattern) override;
+
+  void visit (HIR::TupleStructPattern &pattern) override;
+
+private:
+  CompilePatternBindings (Context *ctx, tree match_scrutinee_expr)
+    : HIRCompileBase (ctx), match_scrutinee_expr (match_scrutinee_expr)
+  {}
+
+  tree match_scrutinee_expr;
+};
+
+} // namespace Compile
+} // namespace Rust