TensorMap.h

Go to the documentation of this file.

// ----------------------------------------------------------------------------
// -                        Open3D: www.open3d.org                            -
// ----------------------------------------------------------------------------
// The MIT License (MIT)
//
// Copyright (c) 2018 www.open3d.org
//
// 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.
// ----------------------------------------------------------------------------

#pragma once

#include <string>
#include <unordered_map>

#include "open3d/core/Tensor.h"

namespace open3d {
namespace t {
namespace geometry {

class TensorMap : public std::unordered_map<std::string, core::Tensor> {
public:
    explicit TensorMap(const std::string& primary_key)
        : std::unordered_map<std::string, core::Tensor>(),
          primary_key_(primary_key) {}

    explicit TensorMap() : TensorMap("Undefined") {
        utility::LogError("Please construct TensorMap with a primary key.");
    }

    template <class InputIt>
    TensorMap(const std::string& primary_key, InputIt first, InputIt last)
        : std::unordered_map<std::string, core::Tensor>(first, last),
          primary_key_(primary_key) {
        AssertPrimaryKeyInMapOrEmpty();
    }

    TensorMap(const std::string& primary_key,
              const std::unordered_map<std::string, core::Tensor>& tensor_map)
        : TensorMap(primary_key, tensor_map.begin(), tensor_map.end()) {}

    TensorMap(const std::string& primary_key,
              std::initializer_list<value_type> init)
        : std::unordered_map<std::string, core::Tensor>(init),
          primary_key_(primary_key) {
        AssertPrimaryKeyInMapOrEmpty();
    }

    TensorMap(const TensorMap& other)
        : std::unordered_map<std::string, core::Tensor>(other),
          primary_key_(other.primary_key_) {
        AssertPrimaryKeyInMapOrEmpty();
    }

    TensorMap(TensorMap&& other)
        : std::unordered_map<std::string, core::Tensor>(other),
          primary_key_(other.primary_key_) {
        AssertPrimaryKeyInMapOrEmpty();
    }

    std::size_t Erase(const std::string key) {
        if (key == primary_key_) {
            utility::LogError("Primary key: {} cannot be deleted.",
                              primary_key_);
        } else if (!Contains(key)) {
            utility::LogWarning("Key: {} is not present.", key);
        }
        return this->erase(key);
    }

    TensorMap& operator=(const TensorMap&) = default;

    TensorMap& operator=(TensorMap&&) = default;

    std::string GetPrimaryKey() const { return primary_key_; }

    bool IsSizeSynchronized() const;

    void AssertSizeSynchronized() const;

    bool Contains(const std::string& key) const { return count(key) != 0; }

private:
    void AssertPrimaryKeyInMapOrEmpty() const;

    int64_t GetPrimarySize() const { return at(primary_key_).GetLength(); }

    core::Device GetPrimaryDevice() const {
        return at(primary_key_).GetDevice();
    }

    std::string primary_key_;
};

}  // namespace geometry
}  // namespace t
}  // namespace open3d