From b4e603d6018a0b43ad3ce9d3a1900ce784a2d07b Mon Sep 17 00:00:00 2001
From: angeld55 <angel_dimitriev@abv.bg>
Date: Wed, 16 Jun 2021 16:56:02 +0300
Subject: utills

---
 Utills/si_14.06/task1/Optional/Optional.hpp | 109 ++++++++++++++++++++++++++++
 Utills/si_14.06/task1/Source.cpp            |  17 +++++
 2 files changed, 126 insertions(+)
 create mode 100644 Utills/si_14.06/task1/Optional/Optional.hpp
 create mode 100644 Utills/si_14.06/task1/Source.cpp

(limited to 'Utills/si_14.06/task1')

diff --git a/Utills/si_14.06/task1/Optional/Optional.hpp b/Utills/si_14.06/task1/Optional/Optional.hpp
new file mode 100644
index 0000000..cf1ec0d
--- /dev/null
+++ b/Utills/si_14.06/task1/Optional/Optional.hpp
@@ -0,0 +1,109 @@
+#include  <iostream>
+
+template <typename T>
+class Optional
+{
+	T* objPtr;
+
+	void copyFrom(const Optional<T>& other);
+	void free();
+		
+public:
+	Optional();
+	Optional(const T& obj);
+
+	Optional(const Optional& other);
+	Optional<T>& operator=(const Optional<T>& other);
+
+	~Optional();
+
+	void setValue(const T& obj);
+	T getValue() const;
+
+	bool containsValue() const;
+
+	bool operator==(const Optional<T>& other) const;
+	bool operator!=(const Optional<T>& other) const;
+};
+
+template <typename T>
+Optional<T>::Optional() : objPtr(nullptr)
+{};
+
+template <typename T>
+Optional<T>::Optional(const T& obj)
+{
+	objPtr = new T(obj);
+}
+
+template <typename T>
+void Optional<T>::setValue(const T& obj)
+{
+	delete objPtr;
+	objPtr = new T(obj);
+}
+
+template <typename T>
+T Optional<T>::getValue() const
+{
+	if (!obj)
+		throw std::exception("No value assigned!");
+	return *objPtr;
+}
+
+template <typename T>
+bool Optional<T>::containsValue() const
+{
+	return objPtr != nullptr;
+}
+
+template <typename T>
+void Optional<T>::copyFrom(const Optional<T>& other)
+{
+	if (!other.obj)
+		objPtr = nullptr;
+	else
+		objPtr = new T(*other.obj);
+}
+
+template <typename T>
+void Optional<T>::free()
+{
+	delete objPtr;
+}
+
+template <typename T>
+Optional<T>::Optional(const Optional<T>& other)
+{
+	copyFrom(other);
+}
+
+template <typename T>
+Optional<T>& Optional<T>::operator=(const Optional<T>& other)
+{
+	if (this != &other)
+	{
+		free();
+		copyFrom(other);
+	}
+
+	return *this;
+}
+
+template <typename T>
+Optional<T>::~Optional()
+{
+	free();
+}
+
+template <typename T>
+bool Optional<T>::operator==(const Optional<T>& other) const
+{
+	return (!objPtr && !other.objPtr) || (objPtr && other.objPtr && *objPtr == *other.objPtr);
+}
+
+template <typename T>
+bool Optional<T>::operator!=(const Optional<T>& other) const
+{
+	return !operator==(other);
+}
diff --git a/Utills/si_14.06/task1/Source.cpp b/Utills/si_14.06/task1/Source.cpp
new file mode 100644
index 0000000..d8397a0
--- /dev/null
+++ b/Utills/si_14.06/task1/Source.cpp
@@ -0,0 +1,17 @@
+#include  <iostream>
+#include "Optional/Optional.hpp"
+
+
+
+int main()
+{
+	Optional<int> o;
+
+	std::cout << o.containsValue() << std::endl;
+
+	o.setValue(12);
+
+	Optional<int> o2(12);
+
+	std::cout << (o == o2) << std::endl;
+}
\ No newline at end of file
-- 
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