pclass: Fix CI build errors + small change to value_caster

include/ki/pclass/Casters.h

@@ -2,8 +2,8 @@
 #include <type_traits>
 #include <sstream>
 #include <json.hpp>
-#include "ki/util/BitTypes.h"
 #include "ki/pclass/Value.h"
+#include "ki/util/BitTypes.h"
 #include "ki/pclass/types/EnumType.h"
 
 namespace ki
@@ -45,18 +45,17 @@ namespace detail
 	>
 		: value_caster_impl<SrcT, nlohmann::json>
 	{
-		Value cast(const Value &value) const override
+		nlohmann::json cast_value(const SrcT &value) const override
 		{
-			const nlohmann::json j = value.get<SrcT>();
-			return Value::make_value<nlohmann::json>(j);
+			return value;
 		}
 	};
 
 	/**
-	 * value_caster specialization for casting bi<N> and bui<N>
+	 * value_caster specialization for casting bit integers (bi<N> and bui<N>)
 	 * to a json object.
 	 */
-	template <int N, bool Unsigned>
+	template <uint8_t N, bool Unsigned>
 	struct value_caster<
 		BitInteger<N, Unsigned>, nlohmann::json
 	>
@@ -68,12 +67,29 @@ namespace detail
 			typename bits<N>::int_type
 		>::type;
 
-		Value cast(const Value &value) const override
+		nlohmann::json cast_value(
+			const BitInteger<N, Unsigned> &value) const override
 		{
-			const nlohmann::json j = static_cast<type>(
-				value.get<BitInteger<N, Unsigned>>()
-			);
-			return Value::make_value<nlohmann::json>(j);
+			return static_cast<type>(value);
+		}
+	};
+
+	/**
+	 * value_caster specialization for casting enum to bit integer types 
+	 * (bi<N> and bui<N>).
+	 */
+	template <typename SrcT, uint8_t N, bool Unsigned>
+	struct value_caster<
+		SrcT, BitInteger<N, Unsigned>,
+		typename std::enable_if<std::is_enum<SrcT>::value>::type
+	>
+		: value_caster_impl<SrcT, BitInteger<N, Unsigned>>
+	{
+		using underlying_type = typename std::underlying_type<SrcT>::type;
+	
+		BitInteger<N, Unsigned> cast_value(const SrcT &value) const override
+		{
+			return static_cast<underlying_type>(value);
 		}
 	};
 
@@ -89,36 +105,9 @@ namespace detail
 	{
 		using underlying_type = typename std::underlying_type<SrcT>::type;
 
-		Value cast(const Value &value) const override
+		nlohmann::json cast_value(const SrcT &value) const override
 		{
-			const auto underlying_value =
-				static_cast<underlying_type>(value.get<SrcT>());
-			const nlohmann::json j = underlying_value;
-			return Value::make_value<nlohmann::json>(j);
-		}
-	};
-
-	/**
-	 * value_caster specialization for casting enums to bit integer types.
-	 */
-	template <
-		typename SrcT,
-		int N, bool Unsigned
-	>
-	struct value_caster<
-		SrcT, BitInteger<N, Unsigned>,
-		typename std::enable_if<std::is_enum<SrcT>::value>::type
-	>
-		: value_caster_impl<SrcT, nlohmann::json>
-	{
-		using underlying_type = typename std::underlying_type<SrcT>::type;
-
-		Value cast(const Value &value) const override
-		{
-			const auto underlying_value =
-				static_cast<underlying_type>(value.get<SrcT>());
-			const auto bit_value = BitInteger<N, Unsigned>(underlying_value);
-			return Value::make_value<BitInteger<N, Unsigned>>(bit_value);
+			return static_cast<underlying_type>(value);
 		}
 	};
 
@@ -164,14 +153,13 @@ namespace detail
 	struct value_caster<SrcT, std::string>
 		: value_caster_impl<SrcT, std::string>
 	{
-		Value cast(const Value &value) const override
+		std::string cast_value(const SrcT &value) const override
 		{
 			std::ostringstream oss;
 			auto casted_value = static_cast<
-				typename string_cast_t<SrcT>::type
-			>(value.get<SrcT>());
+				typename string_cast_t<SrcT>::type>(value);
 			oss << casted_value;
-			return Value::make_value<std::string>(oss.str());
+			return oss.str();
 		}
 	};
 

include/ki/pclass/TypeSystem.h

@@ -2,11 +2,11 @@
 #include <vector>
 #include <unordered_map>
 #include "ki/pclass/HashCalculator.h"
+#include "ki/pclass/Casters.h"
 #include "ki/pclass/types/Type.h"
 #include "ki/pclass/types/PrimitiveType.h"
 #include "ki/pclass/types/ClassType.h"
 #include "ki/pclass/types/EnumType.h"
-#include "ki/pclass/Casters.h"
 
 namespace ki
 {

include/ki/pclass/Value.h

@@ -1,7 +1,6 @@
 #pragma once
 #include <utility>
 #include <typeinfo>
-#include <sstream>
 #include <unordered_map>
 #include "ki/util/exception.h"
 
@@ -44,8 +43,27 @@ namespace pclass
 		template <typename SrcT, typename DestT>
 		struct value_caster_impl : value_caster_base
 		{
+			Value cast(const Value& value) const override;
+			virtual DestT cast_value(const SrcT &value) const = 0;
+
 		protected:
-			static Value bad_cast();
+			static DestT bad_cast();
+		};
+
+		/**
+		 * TODO: Documentation
+		 */
+		template <
+			typename SrcT, typename DestT,
+			typename SrcEnable, typename DestEnable
+		>
+		struct value_caster : value_caster_impl<SrcT, DestT>
+		{
+			DestT cast_value(const SrcT &value) const override
+			{
+				// By default, just attempt to static_cast from SrcT to DestT.
+				return static_cast<DestT>(value);
+			}
 		};
 
 		/**
@@ -386,28 +404,18 @@ namespace pclass
 	namespace detail
 	{
 		template <typename SrcT, typename DestT>
-		Value value_caster_impl<SrcT, DestT>::bad_cast()
+		DestT value_caster_impl<SrcT, DestT>::bad_cast()
 		{
 			throw cast_error(typeid(SrcT), typeid(DestT));
 		}
 
-		/**
-		 * TODO: Documentation
-		 */
-		template <
-			typename SrcT, typename DestT,
-			typename SrcEnable, typename DestEnable
-		>
-		struct value_caster : value_caster_impl<SrcT, DestT>
+		template <typename SrcT, typename DestT>
+		Value value_caster_impl<SrcT, DestT>::cast(const Value& value) const
 		{
-			Value cast(const Value &value) const override
-			{
-				// By default, just attempt to static_cast from SrcT to DestT.
-				return Value::make_value<DestT>(
-					static_cast<DestT>(value.get<SrcT>())
-				);
-			}
-		};
+			return Value::make_value<DestT>(
+				cast_value(value.get<SrcT>())
+			);
+		}
 	}
 }
 }

test/src/unit-serialization.cpp

@@ -3,13 +3,13 @@
 #include <cstdint>
 #include <string>
 #include <catch.hpp>
+#include <ki/util/unique.h>
 #include <ki/pclass/TypeSystem.h>
 #include <ki/pclass/PropertyClass.h>
 #include <ki/pclass/StaticProperty.h>
 #include <ki/pclass/VectorProperty.h>
 #include <ki/serialization/BinarySerializer.h>
-#include "ki/util/unique.h"
-#include "ki/serialization/JsonSerializer.h"
+#include <ki/serialization/JsonSerializer.h>
 
 using namespace ki;
 
@@ -108,15 +108,13 @@ namespace detail
 	struct value_caster<Vector3D, nlohmann::json>
 		: value_caster_impl<Vector3D, nlohmann::json>
 	{
-		Value cast(const Value &value) const override
+		nlohmann::json cast_value(const Vector3D &value) const
 		{
-			auto &vector = value.get<Vector3D>();
-			const nlohmann::json j = {
-				{ "x", vector.m_x },
-				{ "y", vector.m_y },
-				{ "z", vector.m_z }
+			return {
+				{ "x", value.m_x },
+				{ "y", value.m_y },
+				{ "z", value.m_z }
 			};
-			return Value::make_value<nlohmann::json>(j);
 		}
 	};
 
@@ -127,15 +125,12 @@ namespace detail
 	struct value_caster<nlohmann::json, Vector3D>
 		: value_caster_impl<nlohmann::json, Vector3D>
 	{
-		Value cast(const Value &value) const override
+		Vector3D cast_value(const nlohmann::json &value) const
 		{
-			auto &j = value.get<nlohmann::json>();
-			return Value::make_value<Vector3D>(
-				Vector3D(
-					j["x"].get<float>(),
-					j["y"].get<float>(),
-					j["z"].get<float>()
-				)
+			return Vector3D(
+				value["x"].get<float>(),
+				value["y"].get<float>(),
+				value["z"].get<float>()
 			);
 		}
 	};