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      1 /*
      2  * Copyright 2014 Google Inc. All rights reserved.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef FRUIT_COMPONENT_STORAGE_DEFN_H
     18 #define FRUIT_COMPONENT_STORAGE_DEFN_H
     19 
     20 #include <fruit/impl/component_storage/component_storage.h>
     21 #include <fruit/impl/component_storage/component_storage_entry.h>
     22 
     23 namespace fruit {
     24 namespace impl {
     25 
     26 inline ComponentStorage::ComponentStorage(FixedSizeVector<ComponentStorageEntry>&& entries)
     27     : entries(std::move(entries)) {}
     28 
     29 inline ComponentStorage::ComponentStorage(const ComponentStorage& other) {
     30   *this = other;
     31 }
     32 
     33 inline ComponentStorage::ComponentStorage(ComponentStorage&& other) {
     34   *this = std::move(other);
     35 }
     36 
     37 inline void ComponentStorage::destroy() {
     38   for (ComponentStorageEntry& entry : entries) {
     39     entry.destroy();
     40   }
     41   entries.clear();
     42 }
     43 
     44 inline ComponentStorage::~ComponentStorage() {
     45   destroy();
     46 }
     47 
     48 inline FixedSizeVector<ComponentStorageEntry> ComponentStorage::release() && {
     49   return std::move(entries);
     50 }
     51 
     52 inline std::size_t ComponentStorage::numEntries() const {
     53   return entries.size();
     54 }
     55 
     56 inline ComponentStorage& ComponentStorage::operator=(const ComponentStorage& other) {
     57   destroy();
     58 
     59   entries = FixedSizeVector<ComponentStorageEntry>(other.entries.size());
     60   for (const ComponentStorageEntry& entry : other.entries) {
     61     entries.push_back(entry.copy());
     62   }
     63 
     64   return *this;
     65 }
     66 
     67 inline ComponentStorage& ComponentStorage::operator=(ComponentStorage&& other) {
     68   entries = std::move(other.entries);
     69 
     70   // We don't want other to have any entries after this operation because we might otherwise end up destroying those
     71   // ComponentStorageEntry objects twice.
     72   other.entries.clear();
     73 
     74   return *this;
     75 }
     76 
     77 } // namespace impl
     78 } // namespace fruit
     79 
     80 #endif // FRUIT_COMPONENT_STORAGE_DEFN_H
     81