85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
/**
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* @file src/common/model/element_view.h
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*
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* Copyright (c) 2021-2024 Bartek Kryza <bkryza@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "common/types.h"
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namespace clanguml::common::model {
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using clanguml::common::eid_t;
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/**
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* Provides type based views over elements in a diagram.
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*
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* @tparam T Type of diagram element
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*/
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template <typename T> class element_view {
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public:
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/**
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* @brief Add reference to diagram element
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*
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* @param element Reference to diagram element of specific type
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*/
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void add(std::reference_wrapper<T> element)
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{
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elements_.emplace_back(std::move(element));
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}
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/**
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* @brief Get collection of reference to diagram elements
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*
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* @return
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*/
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const reference_vector<T> &view() const { return elements_; }
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/**
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* @brief Get collection of reference to diagram elements
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*
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* @return
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*/
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reference_vector<T> &view() { return elements_; }
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/**
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* @brief Get typed diagram element by id
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* @param id Global id of a diagram element
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*
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* @return
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*/
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common::optional_ref<T> get(eid_t id) const
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{
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for (const auto &e : elements_) {
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if (e.get().id() == id) {
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return {e};
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}
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}
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return {};
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}
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/**
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* @brief Check whether the element view is empty
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*
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* @return True, if the view does not contain any elements
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*/
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bool is_empty() const { return elements_.empty(); }
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private:
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reference_vector<T> elements_;
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};
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} // namespace clanguml::common::model
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