PropertyListRecursive.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
//
// Created by alex2 on 03.01.2021.
//
 
#pragma once
 
#include "PropertyList.h"
#include "AUI/ASS/Selector/AAssSelector.h"
 
 
namespace ass {
 
   struct PropertyListConditional;
 
   template<typename T>
   concept ValidDeclarationOrPropertyList = ValidDeclaration<T> || aui::derived_from<T, PropertyListConditional>;
 
   struct PropertyListRecursive: public PropertyList {
   public:
       template<ValidDeclarationOrPropertyList... Declarations>
       PropertyListRecursive(Declarations&& ... declarations): PropertyListRecursive() {
           processDeclarations(std::forward<Declarations>(declarations)...);
       }
 
       PropertyListRecursive(const PropertyListRecursive&);
       PropertyListRecursive();
       ~PropertyListRecursive();
 
 
       PropertyListRecursive(const PropertyList& p);
       PropertyListRecursive(PropertyList&& p);
 
       [[nodiscard]]
       const AVector<PropertyListConditional>& conditionalPropertyLists() const noexcept {
           return mConditionalPropertyLists;
       }
 
   private:
       AVector<PropertyListConditional> mConditionalPropertyLists;
 
       template<typename Property, typename... Declarations>
       void processDeclarations(Property&& declaration, Declarations&& ... declarations) {
           processDeclaration(std::forward<Property>(declaration));
           if constexpr (sizeof...(Declarations) > 0) {
               processDeclarations(std::forward<Declarations>(declarations)...);
           }
       }
 
       template<typename T>
       void processDeclaration(T&& t);
 
   };
 
   struct PropertyListConditional {
       AAssSelector selector;
       PropertyListRecursive list;
 
       template<typename... Declarations>
       PropertyListConditional(AAssSelector selector, Declarations&&... declarations):
               selector(std::move(selector)), list(std::forward<Declarations>(declarations)...)
       {}
   };
 
   inline PropertyListRecursive::PropertyListRecursive() = default;
   inline PropertyListRecursive::PropertyListRecursive(const PropertyList& p) : PropertyList(p) {}
   inline PropertyListRecursive::PropertyListRecursive(PropertyList&& p) : PropertyList(std::move(p)) {}
   inline PropertyListRecursive::PropertyListRecursive(const PropertyListRecursive&) = default;
   inline PropertyListRecursive::~PropertyListRecursive() = default;
 
 
   template<typename T>
   void PropertyListRecursive::processDeclaration(T&& t) {
       if constexpr (std::is_base_of_v<PropertyListConditional, T>) {
           mConditionalPropertyLists << std::forward<PropertyListConditional&&>(t);
       } else if constexpr (std::is_same_v<T, PropertyListRecursive>) {
           // aka move constructor
           mProperties = std::move(t.mProperties);
           mConditionalPropertyLists = std::move(t.mConditionalPropertyLists);
       } else {
           using declaration_t = ass::prop::Property<std::decay_t<T>>;
           static_assert(aui::is_complete<declaration_t>,
                         "ass::prop::Property template specialization is not defined for this property");
 
           mProperties << _new<declaration_t>(t);
       }
   }
}

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