// 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 "paddle/fluid/lite/model_parser/pb/op_desc.h"

namespace paddle {
namespace lite {
namespace pb {

google::protobuf::internal::RepeatedPtrIterator<framework::proto::OpDesc_Attr>
FindAttr(framework::proto::OpDesc *desc, const std::string &name) {
  auto &xs = *desc->mutable_attrs();
  auto it = std::find_if(
      xs.begin(), xs.end(),
      [&](const framework::proto::OpDesc_Attr &x) { return x.name() == name; });
  if (it == xs.end()) {
    auto *attr = xs.Add();
    attr->set_name(name);
    it = std::find_if(xs.begin(), xs.end(),
                      [&](const framework::proto::OpDesc_Attr &x) {
                        return x.name() == name;
                      });
  }
  return it;
}

#define SET_IMPL_ONE(T, ty__, pb_f__)                            \
  template <>                                                    \
  void OpDesc::SetAttr<T>(const std::string &name, const T &v) { \
    auto it = FindAttr(&desc_, name);                            \
    it->set_type(framework::proto::ty__);                        \
    it->set_##pb_f__(v);                                         \
  }
SET_IMPL_ONE(int, INT, i);
SET_IMPL_ONE(float, FLOAT, f);
SET_IMPL_ONE(bool, BOOLEAN, b);

template <>
void OpDesc::SetAttr<std::vector<int>>(const std::string &name,
                                       const std::vector<int> &v) {
  auto it = FindAttr(&desc_, name);
  it->set_type(framework::proto::INTS);
  it->clear_ints();
  for (auto &i : v) {
    it->add_ints(i);
  }
}

template <>
void OpDesc::SetAttr<std::string>(const std::string &name,
                                  const std::string &v) {
  auto it = FindAttr(&desc_, name);
  it->set_type(framework::proto::STRING);
  it->set_s(v.c_str());
}

template <>
void OpDesc::SetAttr<std::vector<float>>(const std::string &name,
                                         const std::vector<float> &v) {
  auto it = FindAttr(&desc_, name);
  it->set_type(framework::proto::FLOATS);
  it->clear_floats();
  for (auto &i : v) {
    it->add_floats(i);
  }
}

template <>
void OpDesc::SetAttr<std::vector<std::string>>(
    const std::string &name, const std::vector<std::string> &v) {
  auto it = FindAttr(&desc_, name);
  it->set_type(framework::proto::STRINGS);
  it->clear_strings();
  for (auto &i : v) {
    it->add_strings(i);
  }
}

google::protobuf::internal::RepeatedPtrIterator<
    const framework::proto::OpDesc_Attr>
GetFindAttr(const framework::proto::OpDesc &desc, const std::string &name) {
  auto &xs = desc.attrs();
  auto it = std::find_if(
      xs.begin(), xs.end(),
      [&](const framework::proto::OpDesc_Attr &x) { return x.name() == name; });
  return it;
}

#define GET_ATTR_IMPL(T, pb_f__)                        \
  template <>                                           \
  T OpDesc::GetAttr<T>(const std::string &name) const { \
    auto it = GetFindAttr(desc_, name);                 \
    return it->pb_f__();                                \
  }

#define GET_ATTRS_IMPL(T, pb_f__)                       \
  template <>                                           \
  T OpDesc::GetAttr<T>(const std::string &name) const { \
    auto it = GetFindAttr(desc_, name);                 \
    T res;                                              \
    for (const auto &v : it->pb_f__()) {                \
      res.push_back(v);                                 \
    }                                                   \
    return res;                                         \
  }
GET_ATTR_IMPL(int32_t, i);
GET_ATTR_IMPL(float, f);
GET_ATTR_IMPL(bool, b);
GET_ATTRS_IMPL(std::vector<int>, ints);
GET_ATTRS_IMPL(std::vector<float>, floats);
GET_ATTRS_IMPL(std::vector<std::string>, strings);
GET_ATTR_IMPL(std::string, s);

}  // namespace pb
}  // namespace lite
}  // namespace paddle
