1 files changed, 70 insertions, 0 deletions
diff --git a/compiler/angkor/include/nncc/core/ADT/kernel/IndexEnumerator.h b/compiler/angkor/include/nncc/core/ADT/kernel/IndexEnumerator.h
new file mode 100644
index 000000000..4167ef972
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+++ b/compiler/angkor/include/nncc/core/ADT/kernel/IndexEnumerator.h
@@ -0,0 +1,70 @@
+/*
+ * 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 __NNCC_CORE_ADT_KERNEL_INDEX_ENUMERATOR_H__
+#define __NNCC_CORE_ADT_KERNEL_INDEX_ENUMERATOR_H__
+
+#include "nncc/core/ADT/kernel/Shape.h"
+
+namespace nncc
+{
+namespace core
+{
+namespace ADT
+{
+namespace kernel
+{
+
+class IndexEnumerator
+{
+public:
+  explicit IndexEnumerator(const Shape &shape);
+
+public:
+  IndexEnumerator(IndexEnumerator &&) = delete;
+  IndexEnumerator(const IndexEnumerator &) = delete;
+
+public:
+  bool valid(void) const;
+
+public:
+  uint32_t count(void) const;
+  uint32_t depth(void) const;
+  uint32_t height(void) const;
+  uint32_t width(void) const;
+
+public:
+  void advance(void);
+
+private:
+  // Store max and current offset for count/depth/height/width
+  //
+  // NOTE Here explicit array is used instead of kernel::Shape to make
+  //      a room for improvement such as enumeration order (NHWC, NCHW)
+  //      support
+  uint32_t _max[4];
+  uint32_t _cur[4];
+
+private:
+  uint32_t _cursor;
+};
+
+} // namespace kernel
+} // namespace ADT
+} // namespace core
+} // namespace nncc
+
+#endif // __NNCC_CORE_ADT_KERNEL_INDEX_ENUMERATOR_H__