79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
/**
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* src/common/generators/nested_element_stack.h
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*
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* Copyright (c) 2021-2023 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 <map>
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#include <string>
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#include <vector>
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namespace clanguml::common::generators {
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/**
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* This is a helper class for generating nested groups of elements
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* in the diagrams, e.g. PlantUML `together` option.
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*
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* @tparam T Type of stack elements
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*/
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template <typename T> class nested_element_stack {
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public:
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nested_element_stack(bool is_flat)
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: is_flat_{is_flat}
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{
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current_level_groups_.push_back({});
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}
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void enter()
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{
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if (!is_flat_)
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current_level_++;
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current_level_groups_.push_back({});
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}
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void leave()
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{
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if (!is_flat_)
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current_level_--;
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current_level_groups_.pop_back();
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}
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void group_together(const std::string &group_name, T *e)
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{
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current_level_groups_[current_level_][group_name].push_back(e);
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}
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const std::map<std::string, std::vector<T *>> &get_current_groups()
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{
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return current_level_groups_.at(current_level_);
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}
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const std::vector<T *> &get_group(const std::string &group_name)
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{
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return get_current_groups().at(group_name);
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}
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private:
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bool is_flat_;
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uint32_t current_level_{0};
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std::vector<std::map<std::string, std::vector<T *>>> current_level_groups_;
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};
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} // namespace clanguml::common::generators
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