libluna: Remove implicit vector copying and add an explicit way to do it

Closes #28.

libluna/include/luna/Vector.h

@@ -15,12 +15,7 @@ template <typename T> class Vector
     {
     }
 
-    Vector(const Vector<T>& other)
-    {
-        reserve(other.capacity());
-        memcpy(m_data, other.data(), other.size());
-        m_size = other.size();
-    }
+    Vector(const Vector<T>& other) = delete;
 
     Vector(Vector<T>&& other)
     {
@@ -32,18 +27,7 @@ template <typename T> class Vector
         other.m_data = nullptr;
     }
 
-    Vector<T>& operator=(const Vector<T>& other)
-    {
-        if (&other == this) return *this;
-
-        if (m_data) clear();
-
-        reserve(other.capacity());
-        for (usize i = 0; i < other.size(); i++) { new (&m_data[i]) T(other.m_data[i]); }
-        m_size = other.size();
-
-        return *this;
-    }
+    Vector<T>& operator=(const Vector<T>& other) = delete;
 
     Vector<T>& operator=(Vector<T>&& other)
     {
@@ -217,6 +201,35 @@ template <typename T> class Vector
         m_data = nullptr;
     }
 
+    Result<Vector<T>> shallow_copy()
+    {
+        Vector<T> other;
+        TRY(other.try_reserve(m_capacity));
+        memcpy(other.m_data, m_data, m_size);
+        other.m_size = m_size;
+        return other;
+    }
+
+    Result<Vector<T>> deep_copy()
+    {
+        Vector<T> other;
+        TRY(other.try_reserve(m_capacity));
+        for (usize i = 0; i < m_size; i++) { TRY(other.try_append(m_data[i])); }
+        return other;
+    }
+
+    Result<Vector<T>> deep_copy(Result<T> (*copy_function)(const T&))
+    {
+        Vector<T> other;
+        TRY(other.try_reserve(m_capacity));
+        for (usize i = 0; i < m_size; i++)
+        {
+            auto copy = TRY(copy_function(m_data[i]));
+            TRY(other.try_append(move(copy)));
+        }
+        return other;
+    }
+
   private:
     T* m_data { nullptr };
     usize m_capacity { 0 };