4 files changed, 32 insertions, 49 deletions

diff --git a/slicer/slicer/common.ice b/slicer/slicer/common.ice
index ad3ff1f..c082102 100644
--- a/slicer/slicer/common.ice
+++ b/slicer/slicer/common.ice
@@ -19,7 +19,9 @@ module Slicer {
 	["cpp:ice_print"]
 	exception UnsupportedModelType extends RuntimeError { };
 	["cpp:ice_print"]
-	exception LocalTypeException extends RuntimeError { };
+	exception LocalTypeException extends RuntimeError {
+		string type;
+	};
 	["cpp:ice_print"]
 	exception NoConversionFound extends RuntimeError {
 		string type;
diff --git a/slicer/slicer/modelParts.h b/slicer/slicer/modelParts.h
index 65be827..c9be22e 100644
--- a/slicer/slicer/modelParts.h
+++ b/slicer/slicer/modelParts.h
@@ -185,5 +185,8 @@ namespace Slicer {
 		void OnContained(const ModelPartHandler &) override;
 
 		ModelPartParam mp;
+
+	protected:
+		[[noreturn]] static void throwLocalTypeException(const std::type_info &);
 	};
 }
diff --git a/slicer/slicer/modelPartsTypes.cpp b/slicer/slicer/modelPartsTypes.cpp
index 0e3f78a..c2c8e79 100644
--- a/slicer/slicer/modelPartsTypes.cpp
+++ b/slicer/slicer/modelPartsTypes.cpp
@@ -157,6 +157,12 @@ namespace Slicer {
 		return mp->OnContained(h);
 	}
 
+	void
+	ModelPartForRootBase::throwLocalTypeException(const std::type_info & type)
+	{
+		throw LocalTypeException(ModelPartForComplexBase::demangle(type.name()));
+	}
+
 	bool
 	ModelPartForSimpleBase::HasValue() const
 	{
diff --git a/slicer/slicer/modelPartsTypes.impl.h b/slicer/slicer/modelPartsTypes.impl.h
index b1f0df8..9c141f7 100644
--- a/slicer/slicer/modelPartsTypes.impl.h
+++ b/slicer/slicer/modelPartsTypes.impl.h
@@ -133,70 +133,42 @@ namespace Slicer {
 
 	template<typename T>
 	void
-	typeWrite(::Ice::OutputStream & s, const ::Ice::optional<T> & m)
-	{
-		if constexpr (!isLocal<T>::value) {
-			s.startEncapsulation();
-			s.write(0, m);
-			s.endEncapsulation();
-		}
-		else {
-			throw LocalTypeException();
-		}
-	}
-
-	template<typename T>
-	void
-	typeWrite(::Ice::OutputStream & s, const T & m)
-	{
-		if constexpr (!isLocal<T>::value) {
-			s.write(m);
-		}
-		else {
-			throw LocalTypeException();
-		}
-	}
-
-	template<typename T>
-	void
-	typeRead(::Ice::InputStream & s, ::Ice::optional<T> & m)
+	ModelPartForRoot<T>::Write(::Ice::OutputStream & s) const
 	{
 		if constexpr (!isLocal<T>::value) {
-			s.startEncapsulation();
-			s.read(0, m);
-			s.endEncapsulation();
+			if constexpr (isOptional<T>::value) {
+				s.startEncapsulation();
+				s.write(0, *ModelObject);
+				s.endEncapsulation();
+			}
+			else {
+				s.write(*ModelObject);
+			}
 		}
 		else {
-			throw LocalTypeException();
+			ModelPartForRootBase::throwLocalTypeException(typeid(T));
 		}
 	}
 
 	template<typename T>
 	void
-	typeRead(::Ice::InputStream & s, T & m)
+	ModelPartForRoot<T>::Read(::Ice::InputStream & s)
 	{
 		if constexpr (!isLocal<T>::value) {
-			s.read(m);
+			if constexpr (isOptional<T>::value) {
+				s.startEncapsulation();
+				s.read(0, *ModelObject);
+				s.endEncapsulation();
+			}
+			else {
+				s.read(*ModelObject);
+			}
 		}
 		else {
-			throw LocalTypeException();
+			ModelPartForRootBase::throwLocalTypeException(typeid(T));
 		}
 	}
 
-	template<typename T>
-	void
-	ModelPartForRoot<T>::Write(::Ice::OutputStream & s) const
-	{
-		typeWrite(s, *ModelObject);
-	}
-
-	template<typename T>
-	void
-	ModelPartForRoot<T>::Read(::Ice::InputStream & s)
-	{
-		typeRead(s, *ModelObject);
-	}
-
 	// ModelPartForSimple
 	template<typename T>
 	void