Maddie Slockbower
366774622b
- Updated License to GPL v3.0 - Added New Math Nodes - Prototype Rendering Code for Debugging Functions
116 lines
3.7 KiB
C++
116 lines
3.7 KiB
C++
// =====================================================================================================================
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// open-cpp-utils, an open-source cpp library with data structures that extend the STL.
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// Copyright (C) 2024 Medusa Slockbower
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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// =====================================================================================================================
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#ifndef OPEN_CPP_UTILS_OBJECT_POOL_H
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#define OPEN_CPP_UTILS_OBJECT_POOL_H
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#include "dynarray.h"
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#include "optional.h"
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namespace open_cpp_utils
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{
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/**
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* \brief
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* \tparam T
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*/
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template<typename T>
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class object_list
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{
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// Typedefs ============================================================================================================
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public:
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using value_type = T;
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using pointer = T*;
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using const_pointer = const T*;
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using reference = T&;
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using const_reference = const T&;
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using uuid_type = uint64_t;
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private:
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using node = optional<value_type>;
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// Functions ===========================================================================================================
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public:
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// Constructors & Destructor -------------------------------------------------------------------------------------------
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object_list() = default;
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object_list(const object_list& other) = default;
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object_list(object_list&& other) = default;
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~object_list() = default;
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// Modifiers -----------------------------------------------------------------------------------------------------------
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size_t size() const { return data_.size(); }
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size_t capacity() const { return data_.capacity(); }
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// Modifiers -----------------------------------------------------------------------------------------------------------
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void clear() { data_.clear(); freed_.clear(); }
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uuid_type insert(const_reference& value);
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void erase(uuid_type id);
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object_list& operator=(const object_list&) = default;
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object_list& operator=(object_list&&) = default;
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// Accessors -----------------------------------------------------------------------------------------------------------
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reference operator[](uuid_type id) { assert(data_[id]()); return data_[id]; }
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const_reference operator[](uuid_type id) const { assert(data_[id]()); return data_[id]; }
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bool operator()(uuid_type id) const { return data_[id](); }
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typename dynarray<node>::iterator begin() { return data_.begin(); }
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typename dynarray<node>::iterator end() { return data_.end(); }
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// Variables ===========================================================================================================
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private:
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dynarray<node> data_;
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dynarray<uuid_type> freed_;
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};
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template<typename T>
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typename object_list<T>::uuid_type object_list<T>::insert(const_reference value)
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{
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if(freed_.empty()) { data_.push_back(value); return data_.size() - 1; }
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uuid_type id = freed_.back(); freed_.pop_back();
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data_[id] = value;
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return id;
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}
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template<typename T>
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void object_list<T>::erase(uuid_type id)
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{
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data_[id].reset();
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freed_.push_back(id);
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}
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} // open_cpp_utils
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#endif // OPEN_CPP_UTILS_OBJECT_POOL_H
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