/**
 * Copyright 2019 Huawei Technologies Co., Ltd
 *
 * 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.
 */

#ifndef MINDSPORE_CCSRC_UTILS_OVERLOAD_H_
#define MINDSPORE_CCSRC_UTILS_OVERLOAD_H_

#include <list>
#include <utility>
#include <vector>
#include <iostream>
#include <initializer_list>
#include <unordered_map>
#include <map>
#include <memory>
#include <string>

namespace mindspore {

template <typename T>
std::ostream &operator<<(std::ostream &out, const std::vector<T> &v) {
  out << "[const vector][";
  size_t last = v.size() - 1;
  for (size_t i = 0; i < v.size(); ++i) {
    out << v[i];
    if (i != last) out << ", ";
  }
  out << "]";
  return out;
}

template <typename T>
std::ostream &operator<<(std::ostream &os, const std::list<T> &vec) {
  bool begin = true;
  os << "[const list][";
  for (auto &item : vec) {
    if (!begin) {
      os << ", ";
    } else {
      begin = false;
    }
    os << item;
  }
  os << "]";

  return os;
}

template <typename T>
std::ostream &operator<<(std::ostream &os, const std::initializer_list<T> &vec) {
  bool begin = true;
  os << "[";
  for (auto &item : vec) {
    if (!begin) {
      os << ", ";
    } else {
      begin = false;
    }
    os << item;
  }
  os << "]";

  return os;
}

template <typename T>
bool operator==(const std::initializer_list<T> &lhs, const std::initializer_list<T> &rhs) {
  if (lhs.size() != rhs.size()) {
    return false;
  }
  auto lit = lhs.begin();
  auto rit = rhs.begin();
  while (lit != lhs.end()) {
    if (!(*lit == *rit)) {
      return false;
    }
    lit++;
    rit++;
  }
  return true;
}

template <typename T1, typename T2>
std::ostream &operator<<(std::ostream &os, const std::pair<T1, T2> &pair) {
  os << "[const pair]";

  return os;
}

template <typename T1, typename T2, typename T3>
std::ostream &operator<<(std::ostream &os, const std::unordered_map<T1, T2, T3> &map) {
  os << "[const unordered_map]";
  return os;
}

template <typename T1, typename T2, typename T3>
std::ostream &operator<<(std::ostream &os, const std::map<T1, T2, T3> &map) {
  os << "[const map]";
  return os;
}

template <typename T>
std::string ToString(const std::vector<T> &vec) {
  std::ostringstream buffer;

  buffer << vec;
  return buffer.str();
}

template <typename T1, typename T2>
std::string ToString(const std::unordered_map<T1, T2> &map) {
  std::ostringstream buffer;

  buffer << map;
  return buffer.str();
}

template <typename T1, typename T2>
std::string ToString(const std::map<T1, T2> &map) {
  std::ostringstream buffer;

  buffer << map;
  return buffer.str();
}

}  // namespace mindspore

#endif  // MINDSPORE_CCSRC_UTILS_OVERLOAD_H_