text: // Copyright (c) 2019 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 "lite/operators/sequence_pool_op.h"
  #include "lite/core/op_registry.h"
  
  namespace paddle {
  namespace lite {
  namespace operators {
  
  bool SequencePoolOp::CheckShape() const {
    CHECK_OR_FALSE(param_.X);
    CHECK_OR_FALSE(param_.Out);
    auto lod = param_.X->lod();
    CHECK_EQ_OR_FALSE(lod.size(), 1UL);
    auto dims = param_.X->dims();
    CHECK_GE_OR_FALSE(dims[0], (static_cast<int64_t>(lod[0].size()) - 1));
    return true;
  }
  
  bool SequencePoolOp::InferShapeImpl() const {
    const auto *input = param_.X;
    auto out_dims = input->dims();
    out_dims[0] = input->lod()[0].size() - 1;
    param_.Out->Resize(out_dims);
    param_.MaxIndex->Resize(out_dims);
    return true;
  }
  
  bool SequencePoolOp::AttachImpl(const cpp::OpDesc &opdesc, lite::Scope *scope) {
    param_.X = const_cast<lite::Tensor *>(
        &scope->FindVar(opdesc.Input("X").front())->Get<lite::Tensor>());
    param_.Out =
        scope->FindVar(opdesc.Output("Out").front())->GetMutable<lite::Tensor>();
    param_.MaxIndex = scope->FindVar(opdesc.Output("MaxIndex").front())
                          ->GetMutable<lite::Tensor>();
    param_.pool_type = opdesc.GetAttr<std::string>("pooltype");
    CHECK(param_.X);
    CHECK(param_.Out);
    return true;
  }
  
  }  // namespace operators
  }  // namespace lite
  }  // namespace paddle
  
  REGISTER_LITE_OP(sequence_pool, paddle::lite::operators::SequencePoolOp);
  