Load and destroy methods revised for proper reference counting

The update enhances object management by involving scope-based reference counting. The change affects loading and destruction operations in the Object and several other classes, ensuring the release or retention of objects adhere to their usage context. A function for logging type data has also been introduced to provide better clarity during debugging. Also, tests in script & interpreter have been altered to run in separate module initializations to avoid cross-test interference. Overall, it provides better memory management and dependable tests.

Objects/private/core/module.cpp

@@ -73,7 +73,11 @@ static void deinit(const tp::ModuleManifest*) {
 	MethodObject::UnInitialize();
 
 	obj::BCgen::deinit();
+
+	assertNoLeaks();
+
 	delete NDO;
+	NDO = nullptr;
 }
 
 static tp::ModuleManifest* sModuleDependencies[] = {

Objects/private/core/objectsave.cpp

@@ -3,6 +3,8 @@
 #include "NewPlacement.hpp"
 #include "core/object.h"
 
+#include "primitives/nullobject.h"
+
 #include "HeapAllocatorGlobal.hpp"
 
 #include <malloc.h>
@@ -63,6 +65,27 @@ namespace obj {
 		tp::HeapAllocGlobal::deallocate(memh);
 	}
 
+	void logTypeData(const ObjectType* type) {
+		printf("type - %s\n", type->name);
+		if (type->base) {
+			printf("Based on ");
+			logTypeData(type->base);
+		}
+	}
+
+	void assertNoLeaks() {
+		if (bottom) {
+			printf("ERROR : not all objects are destroyed\n");
+			tp::ualni idx = 0;
+			for (ObjectMemHead* memh = bottom; memh; memh = memh->up) {
+				printf(" ===== Object - %i. Ref count - %i ===== \n", idx, memh->refc);
+				logTypeData(NDO_FROM_MEMH(memh)->type);
+				idx++;
+			}
+		}
+	}
+
+
 	struct ObjectFileHead {
 		Object* load_head_adress = 0;
 		tp::halni refc = 0;
@@ -274,7 +297,13 @@ namespace obj {
 			return NULL;
 		}
 
-		setrefc(out, ofh.refc);
+		setrefc(out, 0);
+
+		// check for null object
+		if (out->type == &NullObject::TypeData) {
+			ObjectMemDeallocate(out);
+			out = NdoNull_globalInstance;
+		}
 
 		// save heap adress in "loaded_file"
 		((ObjectFileHead*) (loaded_file + file_adress))->load_head_adress = out;
@@ -405,8 +434,6 @@ namespace obj {
 		}
 		*/
 
-		setrefc(out, 0);
-
 		return out;
 	}
 

Objects/private/core/scriptsection.cpp

@@ -150,6 +150,8 @@ void load_constants(ScriptSection* self, ArchiverIn& file, tp::alni start_addr)
 		// script text
 		tp::alni str_addr;
 		file >> str_addr;
+
+		NDO->destroy(script->mReadable); // we already have string object in the script when creating script
 		script->mReadable = NDO_CAST(obj::StringObject, obj::NDO->load(file, str_addr));
 
 		file.setAddress(file.getAddress() + sizeof(tp::alni)); // constants length
@@ -257,6 +259,7 @@ void ScriptSection::initialize() {
 void ScriptSection::uninitialize() {
 	ASSERT(gScriptSection);
 	delete gScriptSection;
+	gScriptSection = nullptr;
 }
 
 ScriptSection* ScriptSection::globalHandle() {