add hierarchical node

include/Logger.h

@@ -0,0 +1,89 @@
+#pragma once
+#include <string>
+#include <iostream>
+#include <unordered_map>
+#include <unordered_set>
+#include <memory>
+#include <mutex>
+
+class Logger {
+public:
+	enum class Severity {
+		Debug,
+		Info,
+		Warning,
+		Error
+	};
+
+	// Получить логгер по категории (создаёт, если нет)
+	static Logger& get(const std::string& category) {
+		std::lock_guard<std::mutex> lock(registry_mutex_);
+		auto it = registry_.find(category);
+		if (it == registry_.end()) {
+			auto logger = std::unique_ptr<Logger>(new Logger(category));
+			auto [inserted_it, _] = registry_.emplace(category, std::move(logger));
+			return *(inserted_it->second);
+		}
+		return *(it->second);
+	}
+
+	// Настроить suppression для категории
+	static void suppressCategory(const std::string& category) {
+		get(category).suppressed_ = true;
+	}
+	static void unsuppressCategory(const std::string& category) {
+		get(category).suppressed_ = false;
+	}
+	static void setMinSeverity(const std::string& category, Severity level) {
+		get(category).min_severity_ = level;
+	}
+	static Severity getMinSeverity(const std::string& category) {
+		return get(category).min_severity_;
+	}
+	static bool isSuppressed(const std::string& category) {
+		return get(category).suppressed_;
+	}
+
+	void log(const std::string& message, Severity severity = Severity::Info) const {
+		if (suppressed_) return;
+		if (severity < min_severity_) return;
+		std::cout << "[" << category_ << "] " << severityToString(severity) << ": " << message << std::endl << std::flush;
+	}
+
+	// Удобные методы для логирования по уровню
+	void dbg(const std::string& message) const { log(message, Severity::Debug); }
+	void info(const std::string& message) const { log(message, Severity::Info); }
+	void warn(const std::string& message) const { log(message, Severity::Warning); }
+	void err(const std::string& message) const { log(message, Severity::Error); }
+
+	static std::string severityToString(Severity severity) {
+		switch (severity) {
+			case Severity::Debug: return "DEBUG";
+			case Severity::Info: return "INFO";
+			case Severity::Warning: return "WARNING";
+			case Severity::Error: return "ERROR";
+			default: return "UNKNOWN";
+		}
+	}
+
+	const std::string& category() const { return category_; }
+	Severity minSeverity() const { return min_severity_; }
+	void setMinSeverity(Severity s) { min_severity_ = s; }
+	bool suppressed() const { return suppressed_; }
+	void setSuppressed(bool s) { suppressed_ = s; }
+
+private:
+	explicit Logger(std::string category)
+		: category_(std::move(category)), min_severity_(Severity::Debug), suppressed_(false) {}
+
+	std::string category_;
+	Severity min_severity_;
+	bool suppressed_;
+
+	static std::unordered_map<std::string, std::unique_ptr<Logger>> registry_;
+	static std::mutex registry_mutex_;
+};
+
+// Определения статических членов
+inline std::unordered_map<std::string, std::unique_ptr<Logger>> Logger::registry_{};
+inline std::mutex Logger::registry_mutex_;

include/ifaces/ILink.h

@@ -13,4 +13,5 @@ public:
 	virtual const std::vector<std::shared_ptr<TElem>>& getChildren() const = 0;
 	virtual void addChild(const std::shared_ptr<TElem>& child) = 0;
 	virtual void removeChild(const std::shared_ptr<TElem>& child) = 0;
+	virtual void replaceChild(const std::shared_ptr<TElem>& oldChild, const std::shared_ptr<TElem>& newChild) = 0;
 };

include/ifaces/INode.h

@@ -10,4 +10,5 @@ class INode : public virtual ILinkMixin {
 public:
 	~INode() = default;
 	virtual const std::string& name() const = 0;
+	virtual const std::string& kind() const = 0;
 };

include/links/BaseLink.h

@@ -3,6 +3,7 @@
 #include <algorithm>
 
 #include "ifaces/ILink.h"
+#include "Logger.h"
 
 template <class TElem>
 class BaseLink : public ILink<TElem> {
@@ -12,12 +13,24 @@ public:
 	std::shared_ptr<TElem> getParent() const override { return parent_.lock(); }
 	void setParent(const std::shared_ptr<TElem>& parent) override { parent_ = parent; }
 	const std::vector<std::shared_ptr<TElem>>& getChildren() const override { return children_; }
+
+	void addChild(const std::shared_ptr<TElem>& child) override {
+		this->children_.push_back(child);
+	}
+
 	void removeChild(const std::shared_ptr<TElem>& child) override {
 		children_.erase(std::remove(children_.begin(), children_.end(), child), children_.end());
 	}
 
+	void replaceChild(const std::shared_ptr<TElem>& oldChild, const std::shared_ptr<TElem>& newChild) override {
+		auto it = std::find(children_.begin(), children_.end(), oldChild);
+		if (it != children_.end()) {
+			*it = newChild;
+		}
+	}
+
 	~BaseLink() override {
-		std::cout << "--- Destructor called for: " << "BaseLink" << "\n";
+		Logger::get("Link").dbg("--- Destructor called for: BaseLink");
 	}
 protected:
 	std::vector<std::shared_ptr<TElem>> children_;

include/links/LeafLink.h

@@ -5,5 +5,7 @@
 class LeafLink : public BaseLink {
 public:
 	using BaseLink::BaseLink;
-	void addChild(const NodePtr&) override { throw std::logic_error("LeafLink cannot have children"); }
+	void addChild(const NodePtr&) override {
+		throw std::logic_error("LeafLink cannot have children");
+	}
 };

include/links/NotImplementedLink.h

@@ -0,0 +1,24 @@
+#pragma once
+#include <vector>
+
+#include "ifaces/ILink.h"
+#include "Logger.h"
+
+template <class TElem>
+class NotImplementedLink : public ILink<TElem> {
+	using ElemPtr = std::shared_ptr<TElem>>;
+public:
+	NotImplementedLink(ElemPtr node) {}
+	ElemPtr getNode() const override { return nullptr; }
+	ElemPtr getParent() const override { return nullptr; }
+	void setParent(const ElemPtr& parent) override { }
+	const std::vector<ElemPtr>& getChildren() const override { return empty_; }
+	void addChild(const ElemPtr& child) override { }
+	void removeChild(const ElemPtr& child) override { }
+
+	~NotImplementedLink() override {
+		Logger::get("Link").dbg("--- Destructor called for: NotImplementedLink");
+	}
+private:
+	std::vector<ElemPtr> empty_;
+};

include/links/OneToManyLink.h

@@ -5,5 +5,10 @@ template <class TElem>
 class OneToManyLink : public BaseLink<TElem> {
 public:
 	OneToManyLink(std::shared_ptr<TElem> e) : BaseLink<TElem>(e) {}
-	void addChild(const std::shared_ptr<TElem>& child) override { this->children_.push_back(child); }
+	void addChild(const std::shared_ptr<TElem>& child) override {
+		/* Each child must be exactly the same type as parent */
+		if (typeid(*child) != typeid(*this->owner_node_.lock()))
+			throw std::logic_error("Foundling child");
+		BaseLink<TElem>::addChild(child);
+	}
 };

include/links/OneToOneLink.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "links/BaseLink.h"
+#include <stdexcept>
+
+template <class TElem>
+class OneToOneLink : public BaseLink<TElem> {
+public:
+	OneToOneLink(std::shared_ptr<TElem> e) : BaseLink<TElem>(e) {}
+	void addChild(const std::shared_ptr<TElem>& child) override {
+		if (!this->children_.empty())
+			throw std::logic_error("OneToOneLink cannot have more than one child");
+		BaseLink<TElem>::addChild(child);
+	}
+};

include/mixins/BaseLinkMixin.h

@@ -3,15 +3,16 @@
 #include <memory>
 
 #include "ifaces/ILinkMixin.h"
+#include "Logger.h"
 
 class BaseLinkMixin : public virtual ILinkMixin,
 		      public std::enable_shared_from_this<ILinkMixin> {
 public:
 	void linkChild(const MixinPtr& child) override {
+		getLink()->addChild(child);
+
 		LinkPtr childLink = child->getLink();
 		childLink->setParent(getNode());
-
-		getLink()->addChild(child);
 	}
 
 	void unlinkParent() override {
@@ -28,7 +29,7 @@ public:
 	}
 
 	~BaseLinkMixin() override {
-		std::cout << "--- Destructor called for: " << "BaseLinkMixin" << "\n";
+		Logger::get("Mixin").dbg("--- Destructor called for: BaseLinkMixin");
 	}
 
 protected:

include/mixins/HierarchicalLinkMixin.h

@@ -0,0 +1,49 @@
+#pragma once
+#include <iostream>
+#include "mixins/LazyLinkMixin.h"
+#include <memory>
+#include "links/OneToManyLink.h"
+#include "links/OneToOneLink.h"
+#include "Logger.h"
+
+class HierarchicalLinkMixin : public LazyLinkMixin<OneToOneLink<ILinkMixin>> {
+public:
+	HierarchicalLinkMixin() {}
+
+	~HierarchicalLinkMixin() override {
+		Logger::get("Mixin").dbg("--- Destructor called for: HierarchicalLinkMixin");
+	}
+
+	void linkChild(const MixinPtr& child) override {
+		hierarchicalInit(child);
+		LazyLinkMixin<OneToOneLink<ILinkMixin>>::linkChild(child);
+	}
+
+protected:
+	void hierarchicalInit(const MixinPtr& child) {
+		Logger::get("Mixin").dbg("---  hierarchicalInit called");
+		if (this->link_ && !this->link_->getChildren().empty())
+			return; // already have children, do nothing
+
+
+		/* 1. Have no link_ —
+		 * 2. Has OneToOne with parent or not
+		 * 3. Has OneToOne with child
+		 */
+
+		LinkPtr newLink;
+
+		if (typeid(*child) == typeid(*this)) {
+			Logger::get("Mixin").dbg("---  Mutate to OneToMany");
+			newLink = std::make_shared<OneToManyLink<ILinkMixin>>(this->getNode());
+		} else {
+			Logger::get("Mixin").dbg("---  Mutate to OneToOne");
+			newLink = std::make_shared<OneToOneLink<ILinkMixin>>(this->getNode());
+		}
+
+		if (newLink && this->link_)
+			newLink->setParent(this->link_->getParent());
+
+		this->link_ = newLink;
+	}
+};

include/mixins/LazyLinkMixin.h

@@ -2,6 +2,7 @@
 #include <iostream>
 #include "mixins/BaseLinkMixin.h"
 #include <memory>
+#include "Logger.h"
 
 template <class TLink>
 class LazyLinkMixin : public BaseLinkMixin {
@@ -22,7 +23,7 @@ public:
 	LazyLinkMixin() {}
 
 	~LazyLinkMixin() override {
-		std::cout << "--- Destructor called for: " << "LazyLinkMixin" << "\n";
+		Logger::get("Mixin").dbg("--- Destructor called for: LazyLinkMixin");
 	}
 
 protected:

include/nodes/BaseNode.h

@@ -2,16 +2,19 @@
 #include <iostream>
 
 #include "ifaces/INode.h"
+#include "Logger.h"
 
 class BaseNode : public virtual INode {
 public:
 	BaseNode(std::string name) : name_(std::move(name)) {
-		std::cout << "--- Base constructor called for: " << name_ << "\n";
+		Logger::get("Node").dbg(std::string("--- Base constructor called for: ") + name_);
 	}
 	const std::string& name() const override { return name_; }
+	const std::string& kind() const override { return kind_; }
 	~BaseNode() {
-		std::cout << "--- Base destructor called for: " << name_ << "\n";
+		Logger::get("Node").dbg(std::string("--- Base destructor called for: ") + name_);
 	}
 protected:
 	std::string name_;
+	std::string kind_;
 };

include/nodes/ComplexNode.h

@@ -0,0 +1,17 @@
+#pragma once
+#include <iostream>
+
+#include "nodes/BaseNode.h"
+#include "mixins/HierarchicalLinkMixin.h"
+#include "Logger.h"
+
+class ComplexNode : public BaseNode,
+		    virtual public HierarchicalLinkMixin {
+public:
+	~ComplexNode() {
+		Logger::get("Node").dbg(std::string("--- Complex destructor called for: ") + name_);
+	}
+	ComplexNode(std::string name) : BaseNode(std::move(name)) {
+		Logger::get("Node").dbg(std::string("--- Complex constructor called for: ") + name_);
+	}
+};

include/nodes/SimpleNode.h

@@ -3,15 +3,16 @@
 
 #include "nodes/BaseNode.h"
 #include "mixins/LazyLinkMixin.h"
-#include "links/OneToManyLink.h"
+#include "links/OneToOneLink.h"
+#include "Logger.h"
 
 class SimpleNode : public BaseNode,
-		   virtual public LazyLinkMixin<OneToManyLink<ILinkMixin>> {
+		   virtual public LazyLinkMixin<OneToOneLink<ILinkMixin>> {
 public:
 	~SimpleNode() {
-		std::cout << "--- Simple destructor called for: " << name_ << "\n";
+		Logger::get("Node").dbg(std::string("--- Simple destructor called for: ") + name_);
 	}
 	SimpleNode(std::string name) : BaseNode(std::move(name)) {
-		std::cout << "--- Simple constructor called for: " << name_ << "\n";
+		Logger::get("Node").dbg(std::string("--- Simple constructor called for: ") + name_);
 	}
 };

src/main.cpp

@@ -1,63 +1,126 @@
 #include "nodes/SimpleNode.h"
+#include "nodes/ComplexNode.h"
 #include <iostream>
+#include "Logger.h"
 
-void printTree(const MixinPtr& start, int indent = 0) {
-	if (!start) return;
-	auto startNode = std::dynamic_pointer_cast<INode>(start);
-	if (!startNode) return;
+void printTree(const NodePtr& startNode, int indent = 0) {
+	if (!startNode) {
+		std::cout << "No node" << "\n";
+		return;
+	}
 	for (int i = 0; i < indent; ++i) std::cout << "  ";
 	std::cout << startNode->name() << "\n";
 	LinkPtr nodeLink = startNode->getLink();
 	for (const auto& child : nodeLink->getChildren()) {
-		printTree(child, indent + 1);
+		auto childNode = std::dynamic_pointer_cast<INode>(child);
+		printTree(childNode, indent + 1);
 	}
 }
 
-int main2() {
-	std::cout << "Creatin...\n\n";
-	auto root = std::make_shared<SimpleNode>("Root");
-	std::cout << "Nice!\n\n";
-	return 0;
-}
-
 int main() {
-	std::cout << "Entering main scope...\n\n";
+	Logger::setMinSeverity("MAIN", Logger::Severity::Debug);
+	//Logger::suppressCategory("Node");
+	Logger::suppressCategory("Link");
+	Logger::suppressCategory("Mixin");
+	auto& logger = Logger::get("MAIN");
+	logger.info("Entering main scope...");
 
 	{
-		auto root = std::make_shared<SimpleNode>("Root");
-		auto child2 = std::make_shared<SimpleNode>("Child1");
+		auto root = std::make_shared<ComplexNode>("ComplexRoot");
+		auto child1 = std::make_shared<ComplexNode>("ComplexChild1");
 
-		root->linkChild(child2);
-		std::cout << "\nInit tree:\n\n\n";
+		root->linkChild(child1);
+
+		std::cout << "\nInit tree:\n";
 		printTree(root);
+		std::cout << "\n";
 
 
 		{
-			auto child1 = std::make_shared<SimpleNode>("Child2");
-			root->linkChild(child1);
-			auto subchild = std::make_shared<SimpleNode>("SubChild2");
-			child1->linkChild(subchild);
-			auto child3 = std::make_shared<SimpleNode>("Child3");
+			auto child2 = std::make_shared<ComplexNode>("ComplexChild2");
+			root->linkChild(child2);
+
+			auto subchild2 = std::make_shared<SimpleNode>("SimpleSubChild2");
+			child2->linkChild(subchild2);
+
+			auto child3 = std::make_shared<ComplexNode>("ComplexChild3");
 			root->linkChild(child3);
-			auto subchild2 = std::make_shared<SimpleNode>("SubChild3");
-			child3->linkChild(subchild2);
 
-			std::cout << "\nAnother tree:\n\n\n";
+			auto subchild3 = std::make_shared<SimpleNode>("SimpleSubChild3");
+			child3->linkChild(subchild3);
+
+			{
+				// Негативный сценарий 1: попытка добавить второй SimpleNode к ComplexNode
+				try {
+					auto anotherSimple = std::make_shared<SimpleNode>("ShouldFail");
+					child2->linkChild(anotherSimple);
+					logger.err("[ERROR] Не должно было получиться добавить второй SimpleNode к ComplexNode!");
+				} catch (const std::logic_error& e) {
+					logger.warn(std::string("[Ожидаемое исключение] ") + e.what());
+				}
+
+				// Негативный сценарий 2: попытка добавить ComplexNode к SimpleNode
+				// Это допустимо: SimpleNode может иметь ComplexNode в качестве единственного ребёнка
+				auto goodComplex = std::make_shared<ComplexNode>("GoodComplex");
+				subchild2->linkChild(goodComplex);
+				logger.info("[OK] ComplexNode успешно добавлен к SimpleNode как единственный ребёнок.");
+
+				// Негативный сценарий: попытка добавить второго ребёнка к SimpleNode
+				try {
+					auto anotherSimple = std::make_shared<SimpleNode>("ShouldFail2");
+					subchild2->linkChild(anotherSimple);
+					logger.err("[ERROR] Не должно было получиться добавить второго ребёнка к SimpleNode!");
+				} catch (const std::logic_error& e) {
+					logger.warn(std::string("[Ожидаемое исключение] ") + e.what());
+				}
+
+				// Негативный сценарий: попытка добавить SimpleNode в ComplexNode, который уже содержит несколько ComplexNode-дочерних
+				try {
+					auto badSimple = std::make_shared<SimpleNode>("BadSimple");
+					root->linkChild(badSimple);
+					logger.err("[ERROR] Не должно было получиться добавить SimpleNode в ComplexNode с несколькими ComplexNode-дочерними!");
+				} catch (const std::logic_error& e) {
+					logger.warn(std::string("[Ожидаемое исключение] ") + e.what());
+				}
+			}
+
+			std::cout << "\nAnother tree:\n";
 			printTree(root);
+			std::cout << "\n";
 
-			std::cout << "\nUnlinking Child1...\n";
-			child1->unlinkParent();
-			std::cout << "\nTree after unlink:\n\n\n";
+			logger.info("Unlinking ComplexChild2...\n");
+			child2->unlinkParent();
+
+			std::cout << "\nTree after unlink:\n";
 			printTree(root);
-			std::cout << "\n\n";
+			std::cout << "\n";
+
+			logger.info("Put refs of ComplexChild2, ComplexChild3 and its children");
 		}
 
-		std::cout << "\nTree after scope out:\n\n\n";
+		std::cout << "\nTree after scope out:\n";
+		printTree(root);
+		std::cout << "\n";
+
+		logger.info("Unlinking ComplexChild1 and ComplexChild3...\n");
+		child1->unlinkParent();
+		for (auto child : root->getLink()->getChildren()) {
+			NodePtr childNode = std::dynamic_pointer_cast<INode>(child);
+			if (childNode->name() == "ComplexChild3") {
+				childNode->unlinkParent();
+				break;
+			}
+		}
+
+		auto child4 = std::make_shared<SimpleNode>("SimpleChild4");
+		root->linkChild(child4);
+
+		std::cout << "\nTree flush and link SimpleChild4:\n";
 		printTree(root);
-		std::cout << "\n\n";
+		std::cout << "\n";
 	}
 
-	std::cout << "\nExited main scope. All smart pointers destroyed.\n";
+	logger.info("Exited main scope. All smart pointers destroyed.");
 
 	return 0;
 }