summaryrefslogtreecommitdiff
path: root/include/util/tensor/IndexIterator.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/util/tensor/IndexIterator.h')
-rw-r--r--include/util/tensor/IndexIterator.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/include/util/tensor/IndexIterator.h b/include/util/tensor/IndexIterator.h
new file mode 100644
index 000000000..cbe895166
--- /dev/null
+++ b/include/util/tensor/IndexIterator.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 __NNFW_UTIL_TENSOR_INDEX_ITERATOR_H__
+#define __NNFW_UTIL_TENSOR_INDEX_ITERATOR_H__
+
+#include "util/tensor/Shape.h"
+#include "util/tensor/Index.h"
+#include "util/tensor/IndexEnumerator.h"
+
+namespace nnfw
+{
+namespace util
+{
+namespace tensor
+{
+
+class IndexIterator
+{
+public:
+ IndexIterator(const Shape &shape) : _shape(shape)
+ {
+ // DO NOTHING
+ }
+
+public:
+ // Allow move, but disallow copy
+ IndexIterator(IndexIterator &&) = default;
+ IndexIterator(const IndexIterator &) = delete;
+
+public:
+ template <typename Callable> IndexIterator &iter(Callable fn)
+ {
+ for (IndexEnumerator e{_shape}; e.valid(); e.advance())
+ {
+ fn(e.curr());
+ }
+
+ return (*this);
+ }
+
+private:
+ const Shape &_shape;
+};
+
+inline IndexIterator iterate(const Shape &shape) { return IndexIterator{shape}; }
+
+template <typename Callable> IndexIterator &operator<<(IndexIterator &&it, Callable cb)
+{
+ return it.iter(cb);
+}
+
+} // namespace tensor
+} // namespace util
+} // namespace nnfw
+
+#endif // __NNFW_UTIL_TENSOR_INDEX_ITERATOR_H__