pclass: Cleanup VectorProperty and fix build errors

include/ki/pclass/Property.h

@@ -1,5 +1,9 @@
 #pragma once
+#include <string>
 #include "ki/pclass/types/Type.h"
+#include "ki/pclass/HashCalculator.h"
+#include "ki/pclass/Value.h"
+#include "ki/util/BitStream.h"
 
 namespace ki
 {
@@ -42,8 +46,8 @@ namespace pclass
 		virtual const PropertyClass *get_object(std::size_t index = 0) const = 0;
 		virtual void set_object(std::unique_ptr<PropertyClass> &object, std::size_t index = 0) = 0;
 
-		virtual void write_value_to(BitStream &stream, std::size_t index = 0) const = 0;
+		virtual void write_value_to(BitStream &stream, std::size_t index = 0) const;
-		virtual void read_value_from(BitStream &stream, std::size_t index = 0) = 0;
+		virtual void read_value_from(BitStream &stream, std::size_t index = 0);
 
 	private:
 		const PropertyClass *m_instance;

include/ki/pclass/StaticProperty.h

@@ -78,8 +78,10 @@ namespace pclass
 		};
 
 		/**
-		 * Provides default implementations of construct() and copy()
+		 * Provides default implementations of construct(), copy()
-		 * for static_object_helper where ValueT is a pointer type.
+		 * get_object(), and set_object() for static_object_helper where
+		 * ValueT is a pointer type.
+		 * @tparam ValueT The type of the value (as a non-pointer type).
 		 */
 		template <typename ValueT>
 		struct pointer_static_object_helper
@@ -340,7 +342,8 @@ namespace pclass
 
 			static void set_value(StaticProperty<ValueT> &prop, Value value, int index)
 			{
-				prop.m_value = value.as<ValueT>().get<ValueT>();
+				Value casted_value = value.as<ValueT>();
+				prop.m_value = casted_value.get<ValueT>();
 			}
 		};
 
@@ -356,12 +359,15 @@ namespace pclass
 		{
 			static Value get_value(const StaticProperty<ValueT *> &prop, int index)
 			{
+				if (prop.m_value == nullptr)
+					throw runtime_error("Called get_value() but value is nullptr.");
 				return Value::make_reference<ValueT>(*prop.m_value);
 			}
 
 			static void set_value(StaticProperty<ValueT *> &prop, Value value, int index)
 			{
-				prop.m_value = value.as<ValueT>().release<ValueT>();
+				Value casted_value = value.as<ValueT>();
+				prop.m_value = casted_value.release<ValueT>();
 			}
 		};
 
@@ -379,7 +385,8 @@ namespace pclass
 
 			static void set_value(StaticProperty<ValueT[N]> &prop, Value value, const int index)
 			{
-				prop.m_value[index] = value.as<ValueT>().get<ValueT>();
+				Value casted_value = value.as<ValueT>();
+				prop.m_value[index] = casted_value.get<ValueT>();
 			}
 		};
 
@@ -397,31 +404,26 @@ namespace pclass
 
 			static void set_value(StaticProperty<ValueT[N]> &prop, Value value, const int index)
 			{
-				prop.m_value[index] = value.as<ValueT>().release<ValueT>();
+				Value casted_value = value.as<ValueT>();
+				prop.m_value[index] = casted_value.release<ValueT>();
 			}
 		};
 	}
 
 	/**
-	 * TODO: Documentation
+	 * Base type for StaticProperty.
+	 * This is used to remove the amount of repeated code in specializations.
 	 */
 	template <typename ValueT>
 	class IStaticProperty : public IProperty
 	{
 	public:
+		using IProperty::IProperty;
+
 		// Do not allow copy assignment. Once a property has been constructed,
 		// it shouldn't be able to change.
 		virtual IStaticProperty<ValueT> &operator=(const IStaticProperty<ValueT> &that) = delete;
 
-		IStaticProperty(PropertyClass &object,
-			const std::string &name, const Type &type)
-			: IProperty(object, name, type)
-		{}
-
-		IStaticProperty(PropertyClass &object, const StaticProperty<ValueT> &that)
-			: IProperty(object, that)
-		{}
-
 		constexpr bool is_pointer() const override
 		{
 			return std::is_pointer<ValueT>::value;
@@ -436,20 +438,6 @@ namespace pclass
 		{
 			throw runtime_error("Tried to call set_element_count() on a property that is not dynamic.");
 		}
-
-		void write_value_to(BitStream &stream, const std::size_t index) const override
-		{
-			if (index < 0 || index >= get_element_count())
-				throw runtime_error("Index out of bounds.");
-			get_type().write_to(stream, get_value(index));
-		}
-
-		void read_value_from(BitStream &stream, const std::size_t index) override
-		{
-			if (index < 0 || index >= get_element_count())
-				throw runtime_error("Index out of bounds.");
-			set_value(get_type().read_from(stream), index);
-		}
 	};
 
 	/**
@@ -471,19 +459,19 @@ namespace pclass
 
 		StaticProperty(PropertyClass &object,
 			const std::string &name, const Type &type)
-			: IStaticProperty(object, name, type)
+			: IStaticProperty<ValueT>(object, name, type)
 			, m_value(detail::static_object_helper<ValueT>::construct(type))
 		{}
 
 		StaticProperty(PropertyClass &object,
 			const std::string &name, const Type &type, ValueT value)
-			: IStaticProperty(object, name, type)
+			: IStaticProperty<ValueT>(object, name, type)
 		{
 			m_value = value;
 		}
 
 		StaticProperty(PropertyClass &object, const StaticProperty<ValueT> &that)
-			: IStaticProperty(object, that)
+			: IStaticProperty<ValueT>(object, that)
 			, m_value(detail::static_object_helper<ValueT>::copy(that))
 		{}
 
@@ -576,14 +564,14 @@ namespace pclass
 
 		StaticProperty(PropertyClass &object,
 			const std::string &name, const Type &type)
-			: IStaticProperty(object, name, type)
+			: IStaticProperty<ValueT[N]>(object, name, type)
 		{
 			for (auto i = 0; i < N; ++i)
 				m_value[i] = detail::static_object_helper<ValueT>::construct(type);
 		}
 
 		StaticProperty(PropertyClass &object, const StaticProperty<ValueT[N]> &that)
-			: IStaticProperty(object, that)
+			: IStaticProperty<ValueT[N]>(object, that)
 		{
 			for (auto i = 0; i < N; ++i)
 				m_value[i] = that.m_value[i];

include/ki/pclass/VectorProperty.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <vector>
+#include <memory>
 #include "ki/pclass/Property.h"
 #include "ki/util/exception.h"
 
@@ -11,271 +12,121 @@ namespace pclass
 	template <typename ValueT>
 	class VectorProperty;
 
-	/// @cond DOXYGEN_SKIP
+	namespace detail
+	{
+		/**
+		 * Provides default implementations for vector_object_helper.
+		 */
+		template <typename ValueT>
+		struct default_vector_object_helper
+		{
+			static ValueT copy(VectorProperty<ValueT> &prop, const int index)
+			{
+				// In cases where ValueT is not a pointer, and does not derive from PropertyClass,
+				// just call the copy constructor.
+				return ValueT(prop.at(index));
+			}
+
+			static const PropertyClass *get_object(const VectorProperty<ValueT> &prop, const int index)
+			{
+				// ValueT does not derive from PropertyClass, and so, this property is not
+				// storing an object.
+				throw runtime_error(
+					"Tried calling get_object() on a property that does not store an object."
+				);
+			}
+
+			static void set_object(VectorProperty<ValueT> &prop,
+				std::unique_ptr<PropertyClass> &object, const int index)
+			{
+				// ValueT does not derive from PropertyClass, and so, this property is not
+				// storing an object.
+				throw runtime_error(
+					"Tried calling set_object() on a property that does not store an object."
+				);
+			}
+		};
+
+		/**
+		 * Provides default implementations of copy()
+		 * for static_object_helper where ValueT is a pointer type.
+		 * @tparam ValueT The type of the value (as a non-pointer type).
+		 */
+		template <typename ValueT>
+		struct pointer_vector_object_helper
+		{
+			static ValueT *copy(const VectorProperty<ValueT *> &prop)
+			{
+				// The copy constructor for all pointers is to copy the pointer
+				// without creating a new copy of the object it's pointing to.
+				return prop.m_value;
+			}
+
+			static const PropertyClass *get_object(
+				const VectorProperty<ValueT *> &prop, const int index)
+			{
+				// By default, assume that ValueT is not a 
+				throw runtime_error(
+					"Tried calling get_object() on a property that does not store an object."
+				);
+			}
+
+			static void set_object(VectorProperty<ValueT *> &prop,
+				std::unique_ptr<PropertyClass> &object, const int index)
+			{
+				throw runtime_error(
+					"Tried calling set_object() on a property that does not store an object."
+				);
+			}
+		};
+
 		/**
 		 * A helper utility that provides the right implementation of  copy(),
 		 * get_object() and set_object(), based on characteristics of type: ValueT.
 		 */
 		template <
 			typename ValueT,
-		typename IsPointerEnable = void,
+			typename Enable = void
-		typename IsBaseEnable = void
 		>
-	struct vector_value_object_helper
+		struct vector_object_helper : default_vector_object_helper<ValueT>
 		{
-		static ValueT copy(VectorProperty<ValueT> &prop, const int index)
+			using default_vector_object_helper<ValueT>::copy;
-		{
+			using default_vector_object_helper<ValueT>::get_object;
-			// Ensure index is within bounds
+			using default_vector_object_helper<ValueT>::set_object;
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
-			// In cases where ValueT is not a pointer, and does not derive from PropertyClass,
-			// just call the copy constructor.
-			return ValueT(prop.at(index));
-		}
-
-		static Value get_value(const VectorProperty<ValueT> &prop, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-			return Value::make_reference<ValueT>(prop.at(index));
-		}
-
-		static void set_value(VectorProperty<ValueT> &prop,
-			Value value, const int index)
-		{
-			prop.at(index) = value
-				.as<ValueT>()
-				.get<ValueT>();
-		}
-
-		static const PropertyClass *get_object(const VectorProperty<ValueT> &prop, const int index)
-		{
-			// ValueT does not derive from PropertyClass, and so, this property is not
-			// storing an object.
-			throw runtime_error(
-				"Tried calling get_object() on a property that does not store an object."
-			);
-		}
-
-		static void set_object(VectorProperty<ValueT> &prop,
-			std::unique_ptr<PropertyClass> &object, const int index)
-		{
-			// ValueT does not derive from PropertyClass, and so, this property is not
-			// storing an object.
-			throw runtime_error(
-				"Tried calling set_object() on a property that does not store an object."
-			);
-		}
 		};
 
 		/**
-	 *
+		 * Specialization for when ValueT is:
+		 * - Not a pointer; but
+		 * - does derive from PropertyClass
 		 */
 		template <typename ValueT>
-	struct vector_value_object_helper<
+		struct vector_object_helper<
 			ValueT,
 			typename std::enable_if<
-			std::is_pointer<ValueT>::value
+				std::is_base_of<PropertyClass, ValueT>::value
-		>::type,
-		typename std::enable_if<
-			!std::is_base_of<
-				PropertyClass,
-				typename std::remove_pointer<ValueT>::type
-			>::value
 			>::type
 		>
+			: default_vector_object_helper<ValueT>
 		{
-		using nonpointer_type = typename std::remove_pointer<ValueT>::type;
+			using default_vector_object_helper<ValueT>::copy;
 
-		static ValueT copy(VectorProperty<ValueT> &prop, const int index)
+			static const PropertyClass *get_object(
+				const VectorProperty<ValueT *> &prop, const int index)
 			{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
-			// The copy constructor for all pointers is to copy the pointer
-			// without creating a new copy of the object it's pointing to.
-			return prop.at(index);
-		}
-
-		static Value get_value(const VectorProperty<ValueT> &prop, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-			return Value::make_reference<nonpointer_type>(*prop.at(index));
-		}
-
-		static void set_value(VectorProperty<ValueT> &prop,
-			Value value, const int index)
-		{
-			prop.at(index) = value
-				.as<nonpointer_type>()
-				.release<nonpointer_type>();
-		}
-
-		static const PropertyClass *get_object(const VectorProperty<ValueT> &prop, const int index)
-		{
-			// ValueT does not derive from PropertyClass, and so, this property is not
-			// storing an object.
-			throw runtime_error(
-				"Tried calling get_object() on a property that does not store an object."
-			);
-		}
-
-		static void set_object(VectorProperty<ValueT> &prop,
-			std::unique_ptr<PropertyClass> &object, const int index)
-		{
-			// ValueT does not derive from PropertyClass, and so, this property is not
-			// storing an object.
-			throw runtime_error(
-				"Tried calling set_object() on a property that does not store an object."
-			);
-		}
-	};
-
-	/**
-	 *
-	 */
-	template <typename ValueT>
-	struct vector_value_object_helper<
-		ValueT,
-		typename std::enable_if<
-			std::is_pointer<ValueT>::value
-		>::type,
-		typename std::enable_if<
-			std::is_base_of<
-				PropertyClass,
-				typename std::remove_pointer<ValueT>::type
-			>::value
-		>::type
-	>
-	{
-		using nonpointer_type = typename std::remove_pointer<ValueT>::type;
-
-		static ValueT copy(VectorProperty<ValueT> &prop, const int index)
-		{
-			// The copy constructor for all pointers is to copy the pointer
-			// without creating a new copy of the object it's pointing to.
-			return prop.at(index);
-		}
-
-		static Value get_value(const VectorProperty<ValueT> &prop, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-			return Value::make_reference<nonpointer_type>(*prop.at(index));
-		}
-
-		static void set_value(VectorProperty<ValueT> &prop,
-			Value value, const int index)
-		{
-			prop.at(index) = value
-				.as<nonpointer_type>()
-				.release<nonpointer_type>();
-		}
-
-		static const PropertyClass *get_object(const VectorProperty<ValueT> &prop, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
-			// ValueT does derive from PropertyClass, and we have a pointer to an instance
-			// of ValueT, so we can cast down to a PropertyClass pointer.
-			return dynamic_cast<PropertyClass *>(prop.at(index));
-		}
-
-		static void set_object(VectorProperty<ValueT> &prop,
-			std::unique_ptr<PropertyClass> &object, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
-			// Ensure that object inherits the type of the property
-			if (object)
-				assert_type_match(prop.get_type(), object->get_type(), true);
-
-			// ValueT does derive from PropertyClass, and we have a pointer to an instance
-			// of PropertyClass, so cast the pointer up to a ValueT.
-			prop.at(index) = dynamic_cast<ValueT>(object.release());
-		}
-	};
-
-	/**
-	 *
-	 */
-	template <typename ValueT>
-	struct vector_value_object_helper<
-		ValueT,
-		typename std::enable_if<
-			!std::is_pointer<ValueT>::value
-		>::type,
-		typename std::enable_if<
-			std::is_base_of<
-				PropertyClass,
-				typename std::remove_pointer<ValueT>::type
-			>::value
-		>::type
-	>
-	{
-		static ValueT copy(VectorProperty<ValueT> &prop, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
-			// Derivitives of PropertyClass implement a clone method that returns
-			// a pointer to a copy.
-			ValueT *value_ptr = dynamic_cast<ValueT *>(prop.at(index).copy());
-			ValueT value = *value_ptr;
-			delete value_ptr;
-			return value;
-		}
-
-		static Value get_value(const VectorProperty<ValueT> &prop, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-			return Value::make_reference<ValueT>(prop.at(index));
-		}
-
-		static void set_value(VectorProperty<ValueT> &prop,
-			Value value, const int index)
-		{
-			prop.at(index) = value
-				.as<ValueT>()
-				.get<ValueT>();
-		}
-
-		static const PropertyClass *get_object(const VectorProperty<ValueT> &prop, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
 				// ValueT does derive from PropertyClass, and we have an instance of ValueT,
 				// so we can cast down to a PropertyClass pointer.
 				return dynamic_cast<const PropertyClass *>(&prop.at(index));
 			}
 
-		static void set_object(VectorProperty<ValueT> &prop,
+			static void set_object(VectorProperty<ValueT *> &prop,
 				std::unique_ptr<PropertyClass> &object, const int index)
 			{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
 				// Ensure that object is not nullptr
 				if (!object)
 					throw runtime_error("Value cannot be null.");
 
-			// Ensure that object is exactly the type of the property
+				// Ensure that object is exactly the type of the property.
 				assert_type_match(prop.get_type(), object->get_type());
 
 				// ValueT does derive from PropertyClass, but we don't store a pointer,
@@ -285,123 +136,111 @@ namespace pclass
 		};
 
 		/**
-	 *
+		 * Specialization for when ValueT is:
-	 */
+		 * - A pointer; but
-	template <
+		 * - does not derive from PropertyClass
-		typename ValueT,
-		typename IsPointerEnable = void
-	>
-	struct vector_value_rw_helper
-	{
-		static void write_value_to(const VectorProperty<ValueT> &prop, BitStream &stream, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
-			prop.get_type().write_to(
-				stream,
-				Value::make_reference<ValueT>(prop.at(index))
-			);
-		}
-
-		static void read_value_from(VectorProperty<ValueT> &prop, BitStream &stream, const int index)
-		{
-			// Ensure index is within bounds
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
-
-			Value value = prop.get_type().read_from(stream);
-			prop.at(index) = value.get<ValueT>();
-		}
-	};
-
-	/**
-	 *
 		 */
 		template <typename ValueT>
-	struct vector_value_rw_helper<
+		struct vector_object_helper<
-		ValueT,
+			ValueT *,
-		typename std::enable_if<std::is_pointer<ValueT>::value>::type
+			typename std::enable_if<
+				!std::is_base_of<PropertyClass, ValueT>::value
+			>::type
 		>
+			: pointer_vector_object_helper<ValueT>
 		{
-		using type = typename std::remove_pointer<ValueT>::type;
+			using pointer_vector_object_helper<ValueT>::copy;
+			using pointer_vector_object_helper<ValueT>::get_object;
+			using pointer_vector_object_helper<ValueT>::set_object;
+		};
 
-		static void write_value_to(const VectorProperty<ValueT> &prop, BitStream &stream, const int index)
+		/**
+		 * Specialization for when ValueT is:
+		 * - A pointer; and
+		 * - does derive from PropertyClass
+		 */
+		template <typename ValueT>
+		struct vector_object_helper<
+			ValueT *,
+			typename std::enable_if<
+				std::is_base_of<PropertyClass, ValueT>::value
+			>::type
+		>
+			: pointer_vector_object_helper<ValueT>
 		{
-			// Ensure index is within bounds
+			using pointer_vector_object_helper<ValueT>::copy;
-			if (index < 0 || index >= prop.size())
-				throw runtime_error("Index out of bounds.");
 
-			prop.get_type().write_to(
+			static const PropertyClass *get_object(
-				stream,
+				const VectorProperty<ValueT *> &prop, const int index)
-				Value::make_reference<type>(*prop.at(index))
+			{
-			);
+				// ValueT does derive from PropertyClass, and we have a pointer to an instance
+				// of ValueT, so we can cast down to a PropertyClass pointer.
+				return dynamic_cast<const PropertyClass *>(prop.at(index));
 			}
 
-		static void read_value_from(VectorProperty<ValueT> &prop, BitStream &stream, const int index)
+			static void set_object(VectorProperty<ValueT *> &prop,
+				std::unique_ptr<PropertyClass> &object, const int index)
 			{
-			// Ensure index is within bounds
+				// Ensure that object inherits the type of the property
-			if (index < 0 || index >= prop.size())
+				if (object)
-				throw runtime_error("Index out of bounds.");
+					assert_type_match(prop.get_type(), object->get_type(), true);
 
-			Value value = prop.get_type().read_from(stream);
+				// ValueT does derive from PropertyClass, and we have a pointer to an instance
-			ValueT &value_ref = prop.at(index);
+				// of PropertyClass, so cast the pointer up to a ValueT.
-			value_ref = value.release<type>();
+				prop.at(index) = dynamic_cast<ValueT *>(object.release());
 			}
 		};
 
 		/**
-	 *
+		 * A helper utility that provides the right implementation of
+		 * get_value() and set_value() based on whether ValueT is a pointer
+		 * for vector properties.
 		 */
 		template <typename ValueT>
 		struct vector_value_helper
 		{
-		static ValueT copy(VectorProperty<ValueT> &prop, const int index)
+			static Value get_value(const VectorProperty<ValueT> &prop, const int index)
 			{
-			return vector_value_object_helper<ValueT>::copy(prop, index);
+				return Value::make_reference<ValueT>(prop.at(index));
-		}
-
-		static Value get_value(const VectorProperty<ValueT> &prop,
-			const int index)
-		{
-			return vector_value_object_helper<ValueT>::get_value(prop, index);
 			}
 
 			static void set_value(VectorProperty<ValueT> &prop,
 				Value value, const int index)
 			{
-			vector_value_object_helper<ValueT>::set_value(prop, value, index);
+				Value casted_value = value.as<ValueT>();
-		}
+				prop.at(index) = casted_value.get<ValueT>();
-
-		static const PropertyClass *get_object(const VectorProperty<ValueT> &prop,
-			const int index)
-		{
-			return vector_value_object_helper<ValueT>::get_object(prop, index);
-		}
-
-		static void set_object(VectorProperty<ValueT> &prop, 
-			std::unique_ptr<PropertyClass> &object, const int index)
-		{
-			vector_value_object_helper<ValueT>::set_object(prop, object, index);
-		}
-
-		static void write_value_to(const VectorProperty<ValueT> &prop,
-			BitStream &stream, const int index)
-		{
-			vector_value_rw_helper<ValueT>::write_value_to(prop, stream, index);
-		}
-
-		static void read_value_from(VectorProperty<ValueT> &prop,
-			BitStream &stream, const int index)
-		{
-			vector_value_rw_helper<ValueT>::read_value_from(prop, stream, index);
 			}
 		};
-	/// @endcond
 
 		/**
+		 * Specialization for when ValueT is a pointer.
 		 *
+		 * Dereference the pointer before creating Value instances.
+		 * This is so that the Value stores a pointer to a ValueT instance,
+		 * rather than storing a pointer to a pointer.
+		 */
+		template <typename ValueT>
+		struct vector_value_helper<ValueT *>
+		{
+			static Value get_value(const VectorProperty<ValueT *> &prop, const int index)
+			{
+				ValueT *value_ptr = prop.at(index);
+				if (value_ptr == nullptr)
+					throw runtime_error("Called get_value() but value is nullptr.");
+				return Value::make_reference<ValueT>(*value_ptr);
+			}
+
+			static void set_value(VectorProperty<ValueT *> &prop,
+				Value value, const int index)
+			{
+				Value casted_value = value.as<ValueT>();
+				prop.at(index) = casted_value.release<ValueT>();
+			}
+		};
+	}
+
+	/**
+	 * A dynamically-sized array property.
 	 */
 	template <typename ValueT>
 	class VectorProperty : public std::vector<ValueT>, public IProperty
@@ -422,7 +261,7 @@ namespace pclass
 		{
 			// Copy vector values into this vector
 			for (auto i = 0; i < this->size(); i++)
-				this->push_back(vector_value_helper<ValueT>::copy(*this, i));
+				this->push_back(detail::vector_value_helper<ValueT>::copy(*this, i));
 		}
 
 		constexpr bool is_pointer() const override
@@ -454,34 +293,28 @@ namespace pclass
 		{
 			if (index < 0 || index >= this->size())
 				throw runtime_error("Index out of bounds.");
-			return vector_value_helper<ValueT>::get_value(*this, index);
+			return detail::vector_value_helper<ValueT>::get_value(*this, index);
 		}
 
 		void set_value(Value value, std::size_t index) override
 		{
 			if (index < 0 || index >= this->size())
 				throw runtime_error("Index out of bounds.");
-			return vector_value_helper<ValueT>::set_value(*this, value, index);
+			return detail::vector_value_helper<ValueT>::set_value(*this, value, index);
 		}
 
 		const PropertyClass *get_object(const std::size_t index) const override
 		{
-			return vector_value_helper<ValueT>::get_object(*this, index);
+			if (index < 0 || index >= this->size())
+				throw runtime_error("Index out of bounds.");
+			return detail::vector_object_helper<ValueT>::get_object(*this, index);
 		}
 
 		void set_object(std::unique_ptr<PropertyClass> &object, std::size_t index) override
 		{
-			return vector_value_helper<ValueT>::set_object(*this, object, index);
+			if (index < 0 || index >= this->size())
-		}
+				throw runtime_error("Index out of bounds.");
-
+			return detail::vector_object_helper<ValueT>::set_object(*this, object, index);
-		void write_value_to(BitStream &stream, const std::size_t index) const override
-		{
-			vector_value_helper<ValueT>::write_value_to(*this, stream, index);
-		}
-
-		void read_value_from(BitStream &stream, const std::size_t index) override
-		{
-			vector_value_helper<ValueT>::read_value_from(*this, stream, index);
 		}
 	};
 }

src/pclass/Property.cpp

@@ -80,5 +80,19 @@ namespace pclass
 	{
 		return 0;
 	}
+
+	void IProperty::write_value_to(BitStream& stream, const std::size_t index) const
+	{
+		if (index < 0 || index >= get_element_count())
+			throw runtime_error("Index out of bounds.");
+		get_type().write_to(stream, get_value(index));
+	}
+
+	void IProperty::read_value_from(BitStream& stream, const std::size_t index)
+	{
+		if (index < 0 || index >= get_element_count())
+			throw runtime_error("Index out of bounds.");
+		set_value(get_type().read_from(stream), index);
+	}
 }
 }