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path: root/src/libjin-lua/common/l_object.cpp
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#include "l_object.h"
#include "je_lua.h"

namespace JinEngine
{
	namespace Lua
	{

		void LuaObject::bind(Shared* obj)
		{
			if (obj)
			{
				shared = obj;
				shared->retain();
				dependencies = new std::map<uint, LuaObject*>();
			}
		}

		void LuaObject::release()
		{
			// Delete lua shared table reference and references.
			if (dependencies)
			{
				clearDependencies();
				delete dependencies;
				dependencies = nullptr;
			}
			// Try delete engine side shared.
			if (shared)
			{
				shared->release();
				shared = nullptr;
			}
		}

		const char* LuaObject::getObjectType()
		{
			return type;
		}

		Shared* LuaObject::getShared()
		{
			return shared;
		}

		void LuaObject::setDependency(uint key, LuaObject* dep)
		{
			removeDependency(key);
			dependencies->insert(std::pair<uint, LuaObject*>(key, dep));
			luax_addreference(state, this, dep);
		}

		void LuaObject::removeDependency(uint key)
		{
			if (!isDependOn(key))
				return;
			DepsMap::iterator it = dependencies->find(key);
			LuaObject* dep = it->second;
			luax_removereference(state, this, dep);
			dependencies->erase(it);
		}

		void LuaObject::removeDependency(LuaObject* dependency)
		{
			for (DepsMap::iterator it = dependencies->begin(); it != dependencies->end();)
			{
				LuaObject* dep = it->second;
				if (dep == dependency)
				{
					luax_removereference(state, this, dep);
					dependencies->erase(it);
				}
				else
					++it;
			}
		}

		bool LuaObject::isDependOn(uint key)
		{
			return dependencies->find(key) != dependencies->end();
		}

		bool LuaObject::isDependOn(LuaObject* shared)
		{
			for (std::pair<uint, LuaObject*> dep : (*dependencies))
			{
				if (dep.second == shared)
					return true;
			}
			return false;
		}

		void LuaObject::clearDependencies()
		{
			luax_removereference(state, this);
			dependencies->clear();
		}

		LuaObject* LuaObject::getDependency(uint key)
		{
			if (!isDependOn(key))
				return nullptr;
			return dependencies->find(key)->second;
		}

		int LuaObject::getDependenciesCount()
		{
			return dependencies->size();
		}

	}
}