Implement Operator API

Resolves: COMPMID-4512

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: Id12130365fa3fe2261160931dcc7affb6b467186
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/6031
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/common/IOperator.cpp b/src/common/IOperator.cpp
new file mode 100644
index 0000000..b56f0e9
--- /dev/null
+++ b/src/common/IOperator.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2021 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.
+ */
+#include "src/common/IOperator.h"
+#include "src/common/utils/Validate.h"
+
+namespace arm_compute
+{
+#ifndef DOXYGEN_SKIP_THIS
+IOperator::IOperator(IContext *ctx)
+    : AclOperator_()
+{
+    ARM_COMPUTE_ASSERT_NOT_NULLPTR(ctx);
+    this->header.ctx = ctx;
+    this->header.ctx->inc_ref();
+}
+
+IOperator::~IOperator()
+{
+    this->header.ctx->dec_ref();
+    this->header.type = detail::ObjectType::Invalid;
+}
+
+bool IOperator::is_valid() const
+{
+    return this->header.type == detail::ObjectType::Operator;
+}
+
+StatusCode IOperator::run(ITensorPack &tensors)
+{
+    _op->run(tensors);
+    return StatusCode::Success;
+}
+
+StatusCode IOperator::run(IQueue &queue, ITensorPack &tensors)
+{
+    ARM_COMPUTE_UNUSED(queue);
+    _op->run(tensors);
+    return StatusCode::Success;
+}
+
+StatusCode IOperator::prepare(ITensorPack &tensors)
+{
+    _op->prepare(tensors);
+    return StatusCode::Success;
+}
+
+MemoryRequirements IOperator::workspace() const
+{
+    return _op->workspace();
+}
+#endif /* DOXYGEN_SKIP_THIS */
+} // namespace arm_compute