1 files changed, 44 insertions, 0 deletions
diff --git a/compiler/nest/core/include/nest/Expr.h b/compiler/nest/core/include/nest/Expr.h
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+++ b/compiler/nest/core/include/nest/Expr.h
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+/*
+ * Copyright (c) 2018 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 __NEST_EXPR_H__
+#define __NEST_EXPR_H__
+
+#include "nest/expr/Node.h"
+#include "nest/expr/Visitor.h"
+
+#include "nest/expr/VarNode.h"
+#include "nest/expr/DerefNode.h"
+#include "nest/expr/AddNode.h"
+#include "nest/expr/MulNode.h"
+
+#include <memory>
+
+namespace nest
+{
+
+// WARNING All of the descendant of expr::Node SHOULD BE immutable
+//
+// The copy/move constructor of Block and Module class simply copies their shared pointer under
+// the assumption that these classes are immutable.
+using Expr = std::shared_ptr<nest::expr::Node>;
+
+} // namespace nest
+
+nest::Expr operator+(const nest::Expr &, const nest::Expr &);
+nest::Expr operator*(const nest::Expr &, const nest::Expr &);
+
+#endif // __NEST_EXPR_H__