// Copyright (c) 2022 PaddlePaddle Authors. 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.

#include "paddle/phi/core/compat/op_utils.h"

namespace phi {

KernelSignature RollOpArgumentMapping(const ArgumentMappingContext& ctx) {
  if (ctx.HasInput("ShiftsTensor")) {
    return KernelSignature("roll", {"X"}, {"ShiftsTensor", "axis"}, {"Out"});
  }
  return KernelSignature("roll", {"X"}, {"shifts", "axis"}, {"Out"});
}

KernelSignature RollGradOpArgumentMapping(const ArgumentMappingContext& ctx) {
  return KernelSignature("roll_grad",
                         {"X", GradVarName("Out")},
                         {"shifts", "axis"},
                         {GradVarName("X")});
}

}  // namespace phi

PD_REGISTER_ARG_MAPPING_FN(roll, phi::RollOpArgumentMapping);
PD_REGISTER_ARG_MAPPING_FN(roll_grad, phi::RollGradOpArgumentMapping);