From 69e44dc073bae7f7f54923d306a52d809b1334d5 Mon Sep 17 00:00:00 2001
From: Moritz Pflanzer <moritz.pflanzer@arm.com>
Date: Wed, 5 Jul 2017 11:02:14 +0100
Subject: COMPMID-415: New framework - datasets [2/5]

Change-Id: Ice4e5d73f40ba2f105663924393afcc88db07973
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/79756
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
---
 framework/datasets/JoinDataset.h | 148 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 framework/datasets/JoinDataset.h

(limited to 'framework/datasets/JoinDataset.h')

diff --git a/framework/datasets/JoinDataset.h b/framework/datasets/JoinDataset.h
new file mode 100644
index 0000000000..eded6e0259
--- /dev/null
+++ b/framework/datasets/JoinDataset.h
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2017 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_TEST_DATASET_JOIN
+#define ARM_COMPUTE_TEST_DATASET_JOIN
+
+#include "Dataset.h"
+
+#include <string>
+#include <tuple>
+#include <utility>
+
+namespace arm_compute
+{
+namespace test
+{
+namespace framework
+{
+namespace dataset
+{
+/** Implementation of a dataset representing the concatenation of the input datasets.
+ *
+ * For example, for the inputs {1, 2} and {3, 4} this dataset virtually
+ * represents the values {1, 2, 3, 4}.
+ */
+template <typename T, typename U>
+class JoinDataset : public Dataset
+{
+private:
+    using iter1_type = typename T::iterator;
+    using iter2_type = typename U::iterator;
+
+public:
+    /** Construct dataset from the given datasets.
+     *
+     * @param[in] dataset1 First dataset.
+     * @param[in] dataset2 Second dataset.
+     */
+    JoinDataset(T &&dataset1, U &&dataset2)
+        : _dataset1{ std::forward<T>(dataset1) },
+          _dataset2{ std::forward<U>(dataset2) }
+    {
+    }
+
+    JoinDataset(JoinDataset &&) = default;
+
+    /** Type of the dataset. */
+    using type = typename T::type;
+
+    /** Iterator for the dataset. */
+    struct iterator
+    {
+        iterator(const T *dataset1, const U *dataset2)
+            : _iter1{ dataset1->begin() }, _iter2{ dataset2->begin() }, _first_size{ dataset1->size() }
+        {
+        }
+
+        std::string description() const
+        {
+            return _first_size > 0 ? _iter1.description() : _iter2.description();
+        }
+
+        JoinDataset::type operator*() const
+        {
+            return _first_size > 0 ? *_iter1 : *_iter2;
+        }
+
+        iterator &operator++()
+        {
+            if(_first_size > 0)
+            {
+                --_first_size;
+                ++_iter1;
+            }
+            else
+            {
+                ++_iter2;
+            }
+
+            return *this;
+        }
+
+    private:
+        iter1_type _iter1;
+        iter2_type _iter2;
+        int        _first_size;
+    };
+
+    /** Iterator pointing at the begin of the dataset.
+     *
+     * @return Iterator for the dataset.
+     */
+    iterator begin() const
+    {
+        return iterator(&_dataset1, &_dataset2);
+    }
+
+    /** Size of the dataset.
+     *
+     * @return Number of values in the dataset.
+     */
+    int size() const
+    {
+        return _dataset1.size() + _dataset2.size();
+    }
+
+private:
+    T _dataset1;
+    U _dataset2;
+};
+
+/** Helper function to create a @ref JoinDataset.
+ *
+ * @param[in] dataset1 First dataset.
+ * @param[in] dataset2 Second dataset.
+ *
+ * @return A join dataset.
+ */
+template <typename T, typename U>
+JoinDataset<T, U> concat(T &&dataset1, U &&dataset2)
+{
+    return JoinDataset<T, U>(std::forward<T>(dataset1), std::forward<U>(dataset2));
+}
+} // namespace dataset
+} // namespace framework
+} // namespace test
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_TEST_DATASET_JOIN */
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