COMPMID-3637: Move utility headers from arm_compute to src

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: If9d6fa8c900b68c4b6fd373f2fc1f9abb83ea917
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4145
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Sang-Hoon Park <sang-hoon.park@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/support/Iterable.h b/support/Iterable.h
new file mode 100644
index 0000000000..a0bafaf4ce
--- /dev/null
+++ b/support/Iterable.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2018-2020 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef ARM_COMPUTE_MISC_ITERABLE_H
+#define ARM_COMPUTE_MISC_ITERABLE_H
+
+#include <iterator>
+
+namespace arm_compute
+{
+namespace utils
+{
+namespace iterable
+{
+/** Reverse range iterable class
+ *
+ * @tparam T Type to create a reverse range on
+ */
+template <typename T>
+class reverse_iterable
+{
+public:
+    /** Default constructor
+     *
+     * @param[in] it Value to reverse iterate on
+     */
+    explicit reverse_iterable(T &it)
+        : _it(it)
+    {
+    }
+
+    /** Get beginning of iterator.
+     *
+     * @return beginning of iterator.
+     */
+    typename T::reverse_iterator begin()
+    {
+        return _it.rbegin();
+    }
+
+    /** Get end of iterator.
+     *
+     * @return end of iterator.
+     */
+    typename T::reverse_iterator end()
+    {
+        return _it.rend();
+    }
+
+    /** Get beginning of const iterator.
+     *
+     * @return beginning of const iterator.
+     */
+    typename T::const_reverse_iterator cbegin()
+    {
+        return _it.rbegin();
+    }
+
+    /** Get end of const iterator.
+     *
+     * @return end of const iterator.
+     */
+    typename T::const_reverse_iterator cend()
+    {
+        return _it.rend();
+    }
+
+private:
+    T &_it;
+};
+
+/** Creates a reverse iterable for a given type
+ *
+ * @tparam T Type to create a reverse iterable on
+ *
+ * @param[in] val Iterable input
+ *
+ * @return Reverse iterable container
+ */
+template <typename T>
+reverse_iterable<T> reverse_iterate(T &val)
+{
+    return reverse_iterable<T>(val);
+}
+} // namespace iterable
+} // namespace utils
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_MISC_ITERABLE_H */