1 files changed, 67 insertions, 0 deletions
diff --git a/compiler/coco/generic/include/coco/ADT/Span.h b/compiler/coco/generic/include/coco/ADT/Span.h
new file mode 100644
index 000000000..240e6afec
--- /dev/null
+++ b/compiler/coco/generic/include/coco/ADT/Span.h
@@ -0,0 +1,67 @@
+/*
+ * 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 __COCO_ADT_SPAN_H__
+#define __COCO_ADT_SPAN_H__
+
+#include <cstdint>
+#include <cassert>
+
+namespace coco
+{
+
+/**
+ * @brief A Span is a non-owing reference to a memory chunk
+ *
+ * @note A Span DOES NOT OWN a memory chunk.
+ */
+template <typename T> class Span
+{
+public:
+  Span(T *data, uint32_t size) : _data{data}, _size{size}
+  {
+    // DO NOTHING
+  }
+
+public:
+  T *data(void) { return _data; }
+  const T *data(void) const { return _data; }
+
+public:
+  uint32_t size(void) const { return _size; }
+
+public:
+  T &operator[](uint32_t n)
+  {
+    assert(n < _size);
+    return *(_data + n);
+  }
+
+public:
+  const T &operator[](uint32_t n) const
+  {
+    assert(n < _size);
+    return *(_data + n);
+  }
+
+private:
+  T *_data;
+  uint32_t _size;
+};
+
+} // namespace coco
+
+#endif // __COCO_ADT_SPAN_H__