/*
 * Copyright (c) 2022-2023 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_DYNAMIC_FUSION_SKETCH_GPU_OPERATORS_GPUCAST
#define ARM_COMPUTE_DYNAMIC_FUSION_SKETCH_GPU_OPERATORS_GPUCAST

#include "arm_compute/dynamic_fusion/sketch/attributes/CastAttributes.h"

namespace arm_compute
{
namespace experimental
{
namespace dynamic_fusion
{
/** Forward declaration */
class GpuWorkloadContext;
class GpuWorkloadSketch;

/** Operator interface. */
class GpuCast final
{
public:
    /** Attributes are a set of backend-agnostic parameters that define what an operator does */
    using Attributes = CastAttributes;
    /** Create an operator and fuse it into the workload sketch.
     *    @note If @ref validate_op() fails, the creation also fails and may throw an error.
     *    @note If @ref validate_op() fails, @p sketch remains unchanged and valid.
     *
     * Valid data type configurations:
     * |src            |dst                                    |
     * |:--------------|:--------------------------------------|
     * |U8             | S8, U16, S16, U32, S32, F16, F32      |
     * |U16            | U8, S8, S16, U32, S32, F16, F32       |
     * |S16            | U8, S8, U16, U32, S32, F16, F32       |
     * |U32            | U8, S8, U16, S16, S32, F16, F32       |
     * |S32            | U8, S8, U16, S16, U32, F16, F32       |
     * |F16            | U8, S8, U16, S16, U32, S32, F32       |
     * |F32            | U8, S8, U16, S16, U32, S32, F16       |
     *
     * Input data type must be different than output data type.
     *
     * Valid data layouts:
     * - Any
     *
     * @param[in,out] sketch     Workload sketch into which the operator will be fused
     * @param[in]     src        Left hand side tensor info. Data types supported: U8/S8/U16/S16/U32/S32/F16/F32.
     * @param[in]     attributes Operator attributes
     *
     * @return Pointer for the destination tensor info
     */
    static ITensorInfo *create_op(GpuWorkloadSketch &sketch,
                                  ITensorInfo       *src,
                                  const Attributes &attributes);
    /** Check if the operator configuration is supported, irrespective of fusion
     *
     * @param[in] context    Workload context within which the operator is running
     * @param[in] src        Left hand side tensor info. Data types supported: All.
     * @param[in] attributes Operator attributes
     *
     * @return Status
     */
    static Status is_supported_op(const GpuWorkloadContext &context,
                                  const ITensorInfo        *src,
                                  const Attributes         &attributes);
    /** Validate the operator and check if the its configuration is supported and if it can be fused into the workload sketch.
     *
     *  Parameters are similar to @ref GpuCast::create_op()
     *
     * @return Status
     */
    static Status validate_op(const GpuWorkloadSketch &sketch,
                              const ITensorInfo       *src,
                              const Attributes        &attributes);
};
} // namespace dynamic_fusion
} // namespace experimental
} // namespace arm_compute
#endif /* ARM_COMPUTE_DYNAMIC_FUSION_SKETCH_GPU_OPERATORS_GPUCAST */