1 files changed, 117 insertions, 115 deletions

diff --git a/include/service.h b/include/service.h
index 715d7c992..ca9533c70 100644
--- a/include/service.h
+++ b/include/service.h
@@ -1,16 +1,24 @@
 /*
+ * Anope IRC Services
  *
- * (C) 2003-2017 Anope Team
- * Contact us at team@anope.org
+ * Copyright (C) 2016 Adam <Adam@anope.org>
+ * Copyright (C) 2012-2017 Anope Team <team@anope.org>
  *
- * Please read COPYING and README for further details.
+ * This file is part of Anope. Anope is free software; you can
+ * redistribute it and/or modify it under the terms of the GNU
+ * General Public License as published by the Free Software
+ * Foundation, version 2.
  *
- * Based on the original code of Epona by Lara.
- * Based on the original code of Services by Andy Church.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef SERVICE_H
-#define SERVICE_H
+#pragma once
 
 #include "services.h"
 #include "anope.h"
@@ -23,151 +31,145 @@
  */
 class CoreExport Service : public virtual Base
 {
-	static std::map<Anope::string, std::map<Anope::string, Service *> > Services;
-	static std::map<Anope::string, std::map<Anope::string, Anope::string> > Aliases;
-
-	static Service *FindService(const std::map<Anope::string, Service *> &services, const std::map<Anope::string, Anope::string> *aliases, const Anope::string &n)
-	{
-		std::map<Anope::string, Service *>::const_iterator it = services.find(n);
-		if (it != services.end())
-			return it->second;
-
-		if (aliases != NULL)
-		{
-			std::map<Anope::string, Anope::string>::const_iterator it2 = aliases->find(n);
-			if (it2 != aliases->end())
-				return FindService(services, aliases, it2->second);
-		}
-
-		return NULL;
-	}
+	Module *owner;
+	/* Service type, which should be the class name (eg "Command") */
+	Anope::string type;
+	/* Service name, commands are usually named service/command */
+	Anope::string name;
 
  public:
- 	static Service *FindService(const Anope::string &t, const Anope::string &n)
-	{
-		std::map<Anope::string, std::map<Anope::string, Service *> >::const_iterator it = Services.find(t);
-		if (it == Services.end())
-			return NULL;
+	Service(Module *o, const Anope::string &t, const Anope::string &n);
+	
+	Service(Module *o, const Anope::string &t) : Service(o, t, "") { }
 
-		std::map<Anope::string, std::map<Anope::string, Anope::string> >::const_iterator it2 = Aliases.find(t);
-		if (it2 != Aliases.end())
-			return FindService(it->second, &it2->second, n);
+	virtual ~Service();
 
-		return FindService(it->second, NULL, n);
-	}
+	Module *GetOwner() const { return owner; }
 
-	static std::vector<Anope::string> GetServiceKeys(const Anope::string &t)
-	{
-		std::vector<Anope::string> keys;
-		std::map<Anope::string, std::map<Anope::string, Service *> >::iterator it = Services.find(t);
-		if (it != Services.end())
-			for (std::map<Anope::string, Service *>::iterator it2 = it->second.begin(); it2 != it->second.end(); ++it2)
-				keys.push_back(it2->first);
-		return keys;
-	}
+	const Anope::string &GetType() const { return type; }
 
-	static void AddAlias(const Anope::string &t, const Anope::string &n, const Anope::string &v)
-	{
-		std::map<Anope::string, Anope::string> &smap = Aliases[t];
-		smap[n] = v;
-	}
+	const Anope::string &GetName() const { return name; }
+};
 
-	static void DelAlias(const Anope::string &t, const Anope::string &n)
-	{
-		std::map<Anope::string, Anope::string> &smap = Aliases[t];
-		smap.erase(n);
-		if (smap.empty())
-			Aliases.erase(t);
-	}
+class ServiceReferenceBase
+{
+	Anope::string type, name;
 
-	Module *owner;
-	/* Service type, which should be the class name (eg "Command") */
-	Anope::string type;
-	/* Service name, commands are usually named service/command */
-	Anope::string name;
+ protected:
+	std::vector<Service *> services;
 
-	Service(Module *o, const Anope::string &t, const Anope::string &n) : owner(o), type(t), name(n)
-	{
-		this->Register();
-	}
+ public:
 
-	virtual ~Service()
-	{
-		this->Unregister();
-	}
+	ServiceReferenceBase() = default;
 
-	void Register()
+	ServiceReferenceBase(const Anope::string &_type, const Anope::string &_name);
+	ServiceReferenceBase(const Anope::string &_type);
+	
+	virtual ~ServiceReferenceBase();
+	
+	explicit operator bool() const
 	{
-		std::map<Anope::string, Service *> &smap = Services[this->type];
-		if (smap.find(this->name) != smap.end())
-			throw ModuleException("Service " + this->type + " with name " + this->name + " already exists");
-		smap[this->name] = this;
+		return !this->services.empty();
 	}
 
-	void Unregister()
-	{
-		std::map<Anope::string, Service *> &smap = Services[this->type];
-		smap.erase(this->name);
-		if (smap.empty())
-			Services.erase(this->type);
-	}
+	const Anope::string &GetType() const { return type; }
+	const Anope::string &GetName() const { return name; }
+
+	Service *GetService() const { return services.empty() ? nullptr : services[0]; }
+	const std::vector<Service *> &GetServices() const { return services; }
+	void SetService(Service *service);
+	void SetServices(const std::vector<Service *> &s);
 };
 
-/** Like Reference, but used to refer to Services.
- */
 template<typename T>
-class ServiceReference : public Reference<T>
+class ServiceReference : public ServiceReferenceBase
 {
-	Anope::string type;
-	Anope::string name;
+	static_assert(std::is_base_of<Service, T>::value, "");
 
  public:
- 	ServiceReference() { }
+	ServiceReference() : ServiceReferenceBase(T::NAME) { }
+	ServiceReference(const Anope::string &n) : ServiceReferenceBase(T::NAME, n) { }
 
-	ServiceReference(const Anope::string &t, const Anope::string &n) : type(t), name(n)
+	operator T*() const
 	{
+		return static_cast<T*>(GetService());
 	}
 
-	inline void operator=(const Anope::string &n)
+	T* operator->() const
 	{
-		this->name = n;
-		this->invalid = true;
+		return static_cast<T*>(GetService());
 	}
 
-	operator bool() anope_override
+	T* operator*() const
 	{
-		if (this->invalid)
-		{
-			this->invalid = false;
-			this->ref = NULL;
-		}
-		if (!this->ref)
-		{
-			/* This really could be dynamic_cast in every case, except for when a module
-			 * creates its own service type (that other modules must include the header file
-			 * for), as the core is not compiled with it so there is no RTTI for it.
-			 */
-			this->ref = static_cast<T *>(::Service::FindService(this->type, this->name));
-			if (this->ref)
-				this->ref->AddReference(this);
-		}
-		return this->ref;
+		return static_cast<T*>(GetService());
 	}
 };
 
-class ServiceAlias
+template<typename T>
+class ServiceReferenceList : public ServiceReferenceBase
 {
-	Anope::string t, f;
+	static_assert(std::is_base_of<Service, T>::value, "");
+
  public:
-	ServiceAlias(const Anope::string &type, const Anope::string &from, const Anope::string &to) : t(type), f(from)
+	using ServiceReferenceBase::ServiceReferenceBase;
+
+	std::vector<T *> GetServices() const
 	{
-		Service::AddAlias(type, from, to);
+		std::vector<T *> out;
+		std::transform(services.begin(), services.end(), std::back_inserter(out), [](Service *e) { return static_cast<T *>(e); });
+		return out;
 	}
+};
+
+class ServiceManager
+{
+	std::vector<ServiceReferenceBase *> references; // managed references
+	std::vector<Service *> services; // all registered services
+
+	/* Lookup services for a reference */
+	void Lookup(ServiceReferenceBase *reference);
 
-	~ServiceAlias()
+	/* Lookup services for all managed references */
+	void LookupAll();
+
+	std::vector<Service *> FindServices(const Anope::string &type);
+
+	static ServiceManager *manager;
+
+ public:
+	Service *FindService(const Anope::string &name);
+	Service *FindService(const Anope::string &type, const Anope::string &name);
+
+	template<typename T>
+	std::vector<T> FindServices()
 	{
-		Service::DelAlias(t, f);
+		static_assert(std::is_base_of<Service, typename std::remove_pointer<T>::type>::value, "");
+		const char *type = std::remove_pointer<T>::type::NAME;
+		std::vector<Service *> s = FindServices(type);
+		std::vector<T> out;
+		std::transform(s.begin(), s.end(), std::back_inserter(out), [](Service *e) { return static_cast<T>(e); });
+		return out;
 	}
+
+	template<typename T>
+	T FindService(const Anope::string &name)
+	{
+		static_assert(std::is_base_of<Service, typename std::remove_pointer<T>::type>::value, "");
+		const char *type = std::remove_pointer<T>::type::NAME;
+		return static_cast<T>(FindService(type, name));
+	}
+
+	void Register(Service *service);
+
+	void Unregister(Service *service);
+
+	void RegisterReference(ServiceReferenceBase *reference);
+
+	void UnregisterReference(ServiceReferenceBase *reference);
+
+	static void Init();
+	static ServiceManager *Get();
+	static void Destroy();
 };
 
-#endif // SERVICE_H