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/*
* Copyright 2018 Google
*
* 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 FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_MODEL_FIELD_TRANSFORM_H_
#define FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_MODEL_FIELD_TRANSFORM_H_
#include <memory>
#include <utility>
#include "Firestore/core/src/firebase/firestore/model/field_path.h"
#include "Firestore/core/src/firebase/firestore/model/transform_operations.h"
namespace firebase {
namespace firestore {
namespace model {
/** A field path and the TransformOperation to perform upon it. */
class FieldTransform {
public:
FieldTransform(FieldPath path,
std::unique_ptr<TransformOperation> transformation) noexcept
: path_{std::move(path)}, transformation_{std::move(transformation)} {
}
const FieldPath& path() const {
return path_;
}
const TransformOperation& transformation() const {
return *transformation_.get();
}
bool operator==(const FieldTransform& other) const {
return path_ == other.path_ && *transformation_ == *other.transformation_;
}
#if defined(__OBJC__)
// For Objective-C++ hash; to be removed after migration.
// Do NOT use in C++ code.
NSUInteger Hash() const {
NSUInteger hash = path_.Hash();
hash = hash * 31 + transformation_->Hash();
return hash;
}
#endif // defined(__OBJC__)
private:
FieldPath path_;
// Shared by copies of the same FieldTransform.
std::shared_ptr<const TransformOperation> transformation_;
};
} // namespace model
} // namespace firestore
} // namespace firebase
#endif // FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_MODEL_FIELD_TRANSFORM_H_
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