1 files changed, 79 insertions, 0 deletions
diff --git a/compiler/loco/include/loco/IR/CanonicalNodeVisitor.h b/compiler/loco/include/loco/IR/CanonicalNodeVisitor.h
new file mode 100644
index 000000000..b9ffd5472
--- /dev/null
+++ b/compiler/loco/include/loco/IR/CanonicalNodeVisitor.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __LOCO_IR_CANONICAL_NODE_VISITOR_H__
+#define __LOCO_IR_CANONICAL_NODE_VISITOR_H__
+
+#include "loco/IR/Nodes.h"
+
+#include <stdexcept>
+
+namespace loco
+{
+
+/**
+ * DO NOT use this class. Use CanonicalNodeVisitor instead.
+ */
+template <typename T> struct CanonicalNodeVisitorBase
+{
+  virtual ~CanonicalNodeVisitorBase() = default;
+
+#define CANONICAL_NODE(OPCODE, CLASS) virtual T visit(const CLASS *) = 0;
+#include "CanonicalNodes.lst"
+#undef CANONICAL_NODE
+};
+
+template <typename T> struct CanonicalNodeVisitor : public CanonicalNodeVisitorBase<T>
+{
+  virtual ~CanonicalNodeVisitor() = default;
+
+#define CANONICAL_NODE(OPCODE, CLASS) \
+  virtual T visit(const CLASS *node) { return visit(static_cast<const Node *>(node)); }
+#include "CanonicalNodes.lst"
+#undef CANONICAL_NODE
+
+  /// @brief Default fallback
+  virtual T visit(const Node *) { throw std::runtime_error{"Not implemented, yet"}; }
+};
+
+/**
+ * DO NOT use this class. Use CanonicalNodeMutableVisitor instead.
+ */
+template <typename T> struct CanonicalNodeMutableVisitorBase
+{
+  virtual ~CanonicalNodeMutableVisitorBase() = default;
+
+#define CANONICAL_NODE(OPCODE, CLASS) virtual T visit(CLASS *) = 0;
+#include "CanonicalNodes.lst"
+#undef CANONICAL_NODE
+};
+
+template <typename T> struct CanonicalNodeMutableVisitor : public CanonicalNodeMutableVisitorBase<T>
+{
+  virtual ~CanonicalNodeMutableVisitor() = default;
+
+#define CANONICAL_NODE(OPCODE, CLASS) \
+  virtual T visit(CLASS *node) { return visit(static_cast<Node *>(node)); }
+#include "CanonicalNodes.lst"
+#undef CANONICAL_NODE
+
+  /// @brief Default fallback
+  virtual T visit(Node *) { throw std::runtime_error{"Not implemented, yet"}; }
+};
+
+} // namespace loco
+
+#endif // __LOCO_IR_CANONICAL_NODE_VISITOR_H__