1 files changed, 77 insertions, 0 deletions
diff --git a/runtimes/neurun/src/graph/operand/BackendSet.cc b/runtimes/neurun/src/graph/operand/BackendSet.cc
new file mode 100644
index 000000000..9a284d722
--- /dev/null
+++ b/runtimes/neurun/src/graph/operand/BackendSet.cc
@@ -0,0 +1,77 @@
+/*
+ * 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.
+ */
+
+#include "BackendSet.h"
+
+#include <cassert>
+
+namespace neurun
+{
+namespace graph
+{
+namespace operand
+{
+
+BackendSet::BackendSet(std::initializer_list<const backend::Backend *> backends)
+{
+  for (auto backend : backends)
+  {
+    _set.insert(backend);
+  }
+}
+
+const backend::Backend *BackendSet::getOnlyElement() const
+{
+  assert(_set.size() == 1u);
+  return *_set.begin();
+}
+
+BackendSet BackendSet::operator|(const BackendSet &other) const
+{
+  auto ret = *this;
+  for (auto backend : other)
+  {
+    ret.add(backend);
+  }
+  return ret;
+}
+
+BackendSet BackendSet::operator&(const BackendSet &other) const
+{
+  BackendSet ret;
+  for (auto backend : other)
+  {
+    if (contains(backend))
+    {
+      ret.add(backend);
+    }
+  }
+  return ret;
+}
+
+BackendSet BackendSet::operator-(const BackendSet &other) const
+{
+  auto ret = *this;
+  for (auto backend : other)
+  {
+    ret.remove(backend);
+  }
+  return ret;
+}
+
+} // namespace operand
+} // namespace graph
+} // namespace neurun