[loco] Introduce DataTypeImpl trait (#3399)

This commit introduces DataTypeImpl traits which returns C++ type
corresponding to each DataType enum value.

Signed-off-by: Jonghyun Park <jh1302.park@samsung.com>

diff --git a/contrib/loco/include/loco/IR/DataTypeTraits.h b/contrib/loco/include/loco/IR/DataTypeTraits.h
new file mode 100644 (file)
index 0000000..660d5d5
--- /dev/null
+++ b/contrib/loco/include/loco/IR/DataTypeTraits.h
@@ -0,0 +1,42 @@
+/*
+ * 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_DATA_TYPE_TRAITS_H__
+#define __LOCO_IR_DATA_TYPE_TRAITS_H__
+
+#include "loco/IR/DataType.h"
+
+namespace loco
+{
+
+/**
+ * @brief C++ scalar type corresponding to each DataType
+ */
+template <DataType DT> struct DataTypeImpl
+{
+  // using Type = ...
+};
+
+// TODO Support other enum values
+template <> struct DataTypeImpl<DataType::FLOAT32>
+{
+  // Use C++ float type for IEEE 32-bit floating-point numbers
+  using Type = float;
+};
+
+} // namespace loco
+
+#endif // __LOCO_IR_DATA_TYPE_TRAITS_H__

diff --git a/contrib/loco/src/IR/DataTypeTraits.test.cpp b/contrib/loco/src/IR/DataTypeTraits.test.cpp
new file mode 100644 (file)
index 0000000..76d2515
--- /dev/null
+++ b/contrib/loco/src/IR/DataTypeTraits.test.cpp
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+#include "loco/IR/DataTypeTraits.h"
+
+#include <typeindex>
+
+#include <gtest/gtest.h>
+
+TEST(DataTypeTraitsTest, FLOAT32)
+{
+  auto obtained = std::type_index(typeid(loco::DataTypeImpl<loco::DataType::FLOAT32>::Type));
+  auto expected = std::type_index(typeid(float));
+
+  ASSERT_EQ(obtained, expected);
+}