Cleanup: [Squirrel] Use nullptr instead of 0 or NULL

16 files changed, 115 insertions, 115 deletions

diff --git a/src/3rdparty/squirrel/sqstdlib/sqstdaux.cpp b/src/3rdparty/squirrel/sqstdlib/sqstdaux.cpp
index a4f4e21c3..4eaa2cb3c 100644
--- a/src/3rdparty/squirrel/sqstdlib/sqstdaux.cpp
+++ b/src/3rdparty/squirrel/sqstdlib/sqstdaux.cpp
@@ -17,7 +17,7 @@ void sqstd_printcallstack(HSQUIRRELVM v)
 		SQFloat f;
 		const SQChar *s;
 		SQInteger level=1; //1 is to skip this function that is level 0
-		const SQChar *name=0;
+		const SQChar *name=nullptr;
 		SQInteger seq=0;
 		pf(v,"\nCALLSTACK\n");
 		while(SQ_SUCCEEDED(sq_stackinfos(v,level,&si)))
@@ -116,7 +116,7 @@ static SQInteger _sqstd_aux_printerror(HSQUIRRELVM v)
 {
 	SQPRINTFUNCTION pf = sq_getprintfunc(v);
 	if(pf) {
-		const SQChar *sErr = 0;
+		const SQChar *sErr = nullptr;
 		if(sq_gettop(v)>=1) {
 			if(SQ_SUCCEEDED(sq_getstring(v,2,&sErr)))	{
 				pf(v,"\nAN ERROR HAS OCCURRED [%s]\n",sErr);
diff --git a/src/3rdparty/squirrel/sqstdlib/sqstdmath.cpp b/src/3rdparty/squirrel/sqstdlib/sqstdmath.cpp
index 0ff009020..3ba6811a6 100644
--- a/src/3rdparty/squirrel/sqstdlib/sqstdmath.cpp
+++ b/src/3rdparty/squirrel/sqstdlib/sqstdmath.cpp
@@ -88,7 +88,7 @@ static SQRegFunction mathlib_funcs[] = {
 #endif /* EXPORT_DEFAULT_SQUIRREL_FUNCTIONS */
 	_DECL_FUNC(fabs,2,".n"),
 	_DECL_FUNC(abs,2,".n"),
-	{0,0,0,0},
+	{nullptr,nullptr,0,nullptr},
 };
 
 #ifndef M_PI
@@ -98,7 +98,7 @@ static SQRegFunction mathlib_funcs[] = {
 SQRESULT sqstd_register_mathlib(HSQUIRRELVM v)
 {
 	SQInteger i=0;
-	while(mathlib_funcs[i].name!=0)	{
+	while(mathlib_funcs[i].name!=nullptr)	{
 		sq_pushstring(v,mathlib_funcs[i].name,-1);
 		sq_newclosure(v,mathlib_funcs[i].f,0);
 		sq_setparamscheck(v,mathlib_funcs[i].nparamscheck,mathlib_funcs[i].typemask);
diff --git a/src/3rdparty/squirrel/squirrel/sqapi.cpp b/src/3rdparty/squirrel/squirrel/sqapi.cpp
index 0d769bf1f..aeef3779b 100644
--- a/src/3rdparty/squirrel/squirrel/sqapi.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqapi.cpp
@@ -60,11 +60,11 @@ HSQUIRRELVM sq_open(SQInteger initialstacksize)
 	v = (SQVM *)SQ_MALLOC(sizeof(SQVM));
 	new (v) SQVM(ss);
 	ss->_root_vm = v;
-	if(v->Init(NULL, initialstacksize)) {
+	if(v->Init(nullptr, initialstacksize)) {
 		return v;
 	} else {
 		sq_delete(v, SQVM);
-		return NULL;
+		return nullptr;
 	}
 	return v;
 }
@@ -83,7 +83,7 @@ HSQUIRRELVM sq_newthread(HSQUIRRELVM friendvm, SQInteger initialstacksize)
 		return v;
 	} else {
 		sq_delete(v, SQVM);
-		return NULL;
+		return nullptr;
 	}
 }
 
@@ -178,7 +178,7 @@ const SQChar *sq_objtostring(HSQOBJECT *o)
 	if(sq_type(*o) == OT_STRING) {
 		return _stringval(*o);
 	}
-	return NULL;
+	return nullptr;
 }
 
 SQInteger sq_objtointeger(HSQOBJECT *o)
@@ -256,7 +256,7 @@ void sq_newarray(HSQUIRRELVM v,SQInteger size)
 
 SQRESULT sq_newclass(HSQUIRRELVM v,SQBool hasbase)
 {
-	SQClass *baseclass = NULL;
+	SQClass *baseclass = nullptr;
 	if(hasbase) {
 		SQObjectPtr &base = stack_get(v,-1);
 		if(type(base) != OT_CLASS)
@@ -555,7 +555,7 @@ SQRESULT sq_getbool(HSQUIRRELVM v,SQInteger idx,SQBool *b)
 
 SQRESULT sq_getstring(HSQUIRRELVM v,SQInteger idx,const SQChar **c)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_STRING,o);
 	*c = _stringval(*o);
 	return SQ_OK;
@@ -563,7 +563,7 @@ SQRESULT sq_getstring(HSQUIRRELVM v,SQInteger idx,const SQChar **c)
 
 SQRESULT sq_getthread(HSQUIRRELVM v,SQInteger idx,HSQUIRRELVM *thread)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_THREAD,o);
 	*thread = _thread(*o);
 	return SQ_OK;
@@ -598,7 +598,7 @@ SQInteger sq_getsize(HSQUIRRELVM v, SQInteger idx)
 
 SQRESULT sq_getuserdata(HSQUIRRELVM v,SQInteger idx,SQUserPointer *p,SQUserPointer *typetag)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_USERDATA,o);
 	(*p) = _userdataval(*o);
 	if(typetag) *typetag = _userdata(*o)->_typetag;
@@ -637,7 +637,7 @@ SQRESULT sq_gettypetag(HSQUIRRELVM v,SQInteger idx,SQUserPointer *typetag)
 
 SQRESULT sq_getuserpointer(HSQUIRRELVM v, SQInteger idx, SQUserPointer *p)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_USERPOINTER,o);
 	(*p) = _userpointer(*o);
 	return SQ_OK;
@@ -666,13 +666,13 @@ SQRESULT sq_getinstanceup(HSQUIRRELVM v, SQInteger idx, SQUserPointer *p,SQUserP
 	SQObjectPtr &o = stack_get(v,idx);
 	if(type(o) != OT_INSTANCE) return sq_throwerror(v,"the object is not a class instance");
 	(*p) = _instance(o)->_userpointer;
-	if(typetag != 0) {
+	if(typetag != nullptr) {
 		SQClass *cl = _instance(o)->_class;
 		do{
 			if(cl->_typetag == typetag)
 				return SQ_OK;
 			cl = cl->_base;
-		}while(cl != NULL);
+		}while(cl != nullptr);
 		return sq_throwerror(v,"invalid type tag");
 	}
 	return SQ_OK;
@@ -801,14 +801,14 @@ SQRESULT sq_setdelegate(HSQUIRRELVM v,SQInteger idx)
 			if(!_table(self)->SetDelegate(_table(mt))) return sq_throwerror(v, "delagate cycle");
 			v->Pop();}
 		else if(type(mt)==OT_NULL) {
-			_table(self)->SetDelegate(NULL); v->Pop(); }
+			_table(self)->SetDelegate(nullptr); v->Pop(); }
 		else return sq_aux_invalidtype(v,type);
 		break;
 	case OT_USERDATA:
 		if(type(mt)==OT_TABLE) {
 			_userdata(self)->SetDelegate(_table(mt)); v->Pop(); }
 		else if(type(mt)==OT_NULL) {
-			_userdata(self)->SetDelegate(NULL); v->Pop(); }
+			_userdata(self)->SetDelegate(nullptr); v->Pop(); }
 		else return sq_aux_invalidtype(v, type);
 		break;
 	default:
@@ -909,7 +909,7 @@ const SQChar *sq_getlocal(HSQUIRRELVM v,SQUnsignedInteger level,SQUnsignedIntege
 		}
 		SQVM::CallInfo &ci=v->_callsstack[lvl];
 		if(type(ci._closure)!=OT_CLOSURE)
-			return NULL;
+			return nullptr;
 		SQClosure *c=_closure(ci._closure);
 		SQFunctionProto *func=_funcproto(c->_function);
 		if(func->_noutervalues > (SQInteger)idx) {
@@ -919,7 +919,7 @@ const SQChar *sq_getlocal(HSQUIRRELVM v,SQUnsignedInteger level,SQUnsignedIntege
 		idx -= func->_noutervalues;
 		return func->GetLocal(v,stackbase,idx,(SQInteger)(ci._ip-func->_instructions)-1);
 	}
-	return NULL;
+	return nullptr;
 }
 
 void sq_pushobject(HSQUIRRELVM v,HSQOBJECT obj)
@@ -929,7 +929,7 @@ void sq_pushobject(HSQUIRRELVM v,HSQOBJECT obj)
 
 void sq_resetobject(HSQOBJECT *po)
 {
-	po->_unVal.pUserPointer=NULL;po->_type=OT_NULL;
+	po->_unVal.pUserPointer=nullptr;po->_type=OT_NULL;
 }
 
 SQRESULT sq_throwerror(HSQUIRRELVM v,const SQChar *err)
@@ -1051,7 +1051,7 @@ void sq_setcompilererrorhandler(HSQUIRRELVM v,SQCOMPILERERROR f)
 
 SQRESULT sq_writeclosure(HSQUIRRELVM v,SQWRITEFUNC w,SQUserPointer up)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, -1, OT_CLOSURE,o);
 	unsigned short tag = SQ_BYTECODE_STREAM_TAG;
 	if(w(up,&tag,2) != 2)
@@ -1093,7 +1093,7 @@ SQInteger sq_collectgarbage(HSQUIRRELVM v)
 const SQChar *sq_getfreevariable(HSQUIRRELVM v,SQInteger idx,SQUnsignedInteger nval)
 {
 	SQObjectPtr &self = stack_get(v,idx);
-	const SQChar *name = NULL;
+	const SQChar *name = nullptr;
 	if(type(self) == OT_CLOSURE) {
 		if(_closure(self)->_outervalues.size()>nval) {
 			v->Push(_closure(self)->_outervalues[nval]);
@@ -1131,7 +1131,7 @@ SQRESULT sq_setfreevariable(HSQUIRRELVM v,SQInteger idx,SQUnsignedInteger nval)
 
 SQRESULT sq_setattributes(HSQUIRRELVM v,SQInteger idx)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_CLASS,o);
 	SQObjectPtr &key = stack_get(v,-2);
 	SQObjectPtr &val = stack_get(v,-1);
@@ -1153,7 +1153,7 @@ SQRESULT sq_setattributes(HSQUIRRELVM v,SQInteger idx)
 
 SQRESULT sq_getattributes(HSQUIRRELVM v,SQInteger idx)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_CLASS,o);
 	SQObjectPtr &key = stack_get(v,-1);
 	SQObjectPtr attrs;
@@ -1173,7 +1173,7 @@ SQRESULT sq_getattributes(HSQUIRRELVM v,SQInteger idx)
 
 SQRESULT sq_getbase(HSQUIRRELVM v,SQInteger idx)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_CLASS,o);
 	if(_class(*o)->_base)
 		v->Push(SQObjectPtr(_class(*o)->_base));
@@ -1184,7 +1184,7 @@ SQRESULT sq_getbase(HSQUIRRELVM v,SQInteger idx)
 
 SQRESULT sq_getclass(HSQUIRRELVM v,SQInteger idx)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_INSTANCE,o);
 	v->Push(SQObjectPtr(_instance(*o)->_class));
 	return SQ_OK;
@@ -1192,7 +1192,7 @@ SQRESULT sq_getclass(HSQUIRRELVM v,SQInteger idx)
 
 SQRESULT sq_createinstance(HSQUIRRELVM v,SQInteger idx)
 {
-	SQObjectPtr *o = NULL;
+	SQObjectPtr *o = nullptr;
 	_GETSAFE_OBJ(v, idx, OT_CLASS,o);
 	v->Push(_class(*o)->CreateInstance());
 	return SQ_OK;
diff --git a/src/3rdparty/squirrel/squirrel/sqbaselib.cpp b/src/3rdparty/squirrel/squirrel/sqbaselib.cpp
index 232c27d2b..c542ee5a4 100644
--- a/src/3rdparty/squirrel/squirrel/sqbaselib.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqbaselib.cpp
@@ -248,29 +248,29 @@ static SQRegFunction base_funcs[]={
 	{"getconsttable",base_getconsttable,1, NULL},
 	{"setconsttable",base_setconsttable,2, NULL},
 #endif
-	{"assert",base_assert,2, NULL},
-	{"print",base_print,2, NULL},
+	{"assert",base_assert,2, nullptr},
+	{"print",base_print,2, nullptr},
 #ifdef EXPORT_DEFAULT_SQUIRREL_FUNCTIONS
 	{"compilestring",base_compilestring,-2, ".ss"},
 	{"newthread",base_newthread,2, ".c"},
 	{"suspend",base_suspend,-1, NULL},
 #endif
 	{"array",base_array,-2, ".n"},
-	{"type",base_type,2, NULL},
+	{"type",base_type,2, nullptr},
 #ifdef EXPORT_DEFAULT_SQUIRREL_FUNCTIONS
 	{"dummy",base_dummy,0,NULL},
 #ifndef NO_GARBAGE_COLLECTOR
 	{"collectgarbage",base_collectgarbage,1, "t"},
 #endif
 #endif
-	{0,0,0,0}
+	{nullptr,nullptr,0,nullptr}
 };
 
 void sq_base_register(HSQUIRRELVM v)
 {
 	SQInteger i=0;
 	sq_pushroottable(v);
-	while(base_funcs[i].name!=0) {
+	while(base_funcs[i].name!=nullptr) {
 		sq_pushstring(v,base_funcs[i].name,-1);
 		sq_newclosure(v,base_funcs[i].f,0);
 		sq_setnativeclosurename(v,-1,base_funcs[i].name);
@@ -415,10 +415,10 @@ SQRegFunction SQSharedState::_table_default_delegate_funcz[]={
 	{"rawset",table_rawset,3, "t"},
 	{"rawdelete",table_rawdelete,2, "t"},
 	{"rawin",container_rawexists,2, "t"},
-	{"weakref",obj_delegate_weakref,1, NULL },
+	{"weakref",obj_delegate_weakref,1, nullptr },
 	{"tostring",default_delegate_tostring,1, "."},
 	{"clear",obj_clear,1, "."},
-	{0,0,0,0}
+	{nullptr,nullptr,0,nullptr}
 };
 
 //ARRAY DEFAULT DELEGATE///////////////////////////////////////
@@ -624,10 +624,10 @@ SQRegFunction SQSharedState::_array_default_delegate_funcz[]={
 	{"reverse",array_reverse,1, "a"},
 	{"sort",array_sort,-1, "ac"},
 	{"slice",array_slice,-1, "ann"},
-	{"weakref",obj_delegate_weakref,1, NULL },
+	{"weakref",obj_delegate_weakref,1, nullptr },
 	{"tostring",default_delegate_tostring,1, "."},
 	{"clear",obj_clear,1, "."},
-	{0,0,0,0}
+	{nullptr,nullptr,0,nullptr}
 };
 
 //STRING DEFAULT DELEGATE//////////////////////////
@@ -687,8 +687,8 @@ SQRegFunction SQSharedState::_string_default_delegate_funcz[]={
 	{"find",string_find,-2, "s s n "},
 	{"tolower",string_tolower,1, "s"},
 	{"toupper",string_toupper,1, "s"},
-	{"weakref",obj_delegate_weakref,1, NULL },
-	{0,0,0,0}
+	{"weakref",obj_delegate_weakref,1, nullptr },
+	{nullptr,nullptr,0,nullptr}
 };
 
 //INTEGER DEFAULT DELEGATE//////////////////////////
@@ -697,8 +697,8 @@ SQRegFunction SQSharedState::_number_default_delegate_funcz[]={
 	{"tofloat",default_delegate_tofloat,1, "n|b"},
 	{"tostring",default_delegate_tostring,1, "."},
 	{"tochar",number_delegate_tochar,1, "n|b"},
-	{"weakref",obj_delegate_weakref,1, NULL },
-	{0,0,0,0}
+	{"weakref",obj_delegate_weakref,1, nullptr },
+	{nullptr,nullptr,0,nullptr}
 };
 
 //CLOSURE DEFAULT DELEGATE//////////////////////////
@@ -782,11 +782,11 @@ SQRegFunction SQSharedState::_closure_default_delegate_funcz[]={
 	{"pcall",closure_pcall,-1, "c"},
 	{"acall",closure_acall,2, "ca"},
 	{"pacall",closure_pacall,2, "ca"},
-	{"weakref",obj_delegate_weakref,1, NULL },
+	{"weakref",obj_delegate_weakref,1, nullptr },
 	{"tostring",default_delegate_tostring,1, "."},
 	{"bindenv",closure_bindenv,2, "c x|y|t"},
 	{"getinfos",closure_getinfos,1, "c"},
-	{0,0,0,0}
+	{nullptr,nullptr,0,nullptr}
 };
 
 //GENERATOR DEFAULT DELEGATE
@@ -803,9 +803,9 @@ static SQInteger generator_getstatus(HSQUIRRELVM v)
 
 SQRegFunction SQSharedState::_generator_default_delegate_funcz[]={
 	{"getstatus",generator_getstatus,1, "g"},
-	{"weakref",obj_delegate_weakref,1, NULL },
+	{"weakref",obj_delegate_weakref,1, nullptr },
 	{"tostring",default_delegate_tostring,1, "."},
-	{0,0,0,0}
+	{nullptr,nullptr,0,nullptr}
 };
 
 //THREAD DEFAULT DELEGATE
@@ -889,9 +889,9 @@ SQRegFunction SQSharedState::_thread_default_delegate_funcz[] = {
 	{"call", thread_call, -1, "v"},
 	{"wakeup", thread_wakeup, -1, "v"},
 	{"getstatus", thread_getstatus, 1, "v"},
-	{"weakref",obj_delegate_weakref,1, NULL },
+	{"weakref",obj_delegate_weakref,1, nullptr },
 	{"tostring",default_delegate_tostring,1, "."},
-	{0,0,0,0},
+	{nullptr,nullptr,0,nullptr},
 };
 
 static SQInteger class_getattributes(HSQUIRRELVM v)
@@ -919,10 +919,10 @@ SQRegFunction SQSharedState::_class_default_delegate_funcz[] = {
 	{"getattributes", class_getattributes, 2, "y."},
 	{"setattributes", class_setattributes, 3, "y.."},
 	{"rawin",container_rawexists,2, "y"},
-	{"weakref",obj_delegate_weakref,1, NULL },
+	{"weakref",obj_delegate_weakref,1, nullptr },
 	{"tostring",default_delegate_tostring,1, "."},
 	{"instance",class_instance,1, "y"},
-	{0,0,0,0}
+	{nullptr,nullptr,0,nullptr}
 };
 
 static SQInteger instance_getclass(HSQUIRRELVM v)
@@ -935,9 +935,9 @@ static SQInteger instance_getclass(HSQUIRRELVM v)
 SQRegFunction SQSharedState::_instance_default_delegate_funcz[] = {
 	{"getclass", instance_getclass, 1, "x"},
 	{"rawin",container_rawexists,2, "x"},
-	{"weakref",obj_delegate_weakref,1, NULL },
+	{"weakref",obj_delegate_weakref,1, nullptr },
 	{"tostring",default_delegate_tostring,1, "."},
-	{0,0,0,0}
+	{nullptr,nullptr,0,nullptr}
 };
 
 static SQInteger weakref_ref(HSQUIRRELVM v)
@@ -949,9 +949,9 @@ static SQInteger weakref_ref(HSQUIRRELVM v)
 
 SQRegFunction SQSharedState::_weakref_default_delegate_funcz[] = {
 	{"ref",weakref_ref,1, "r"},
-	{"weakref",obj_delegate_weakref,1, NULL },
+	{"weakref",obj_delegate_weakref,1, nullptr },
 	{"tostring",default_delegate_tostring,1, "."},
-	{0,0,0,0}
+	{nullptr,nullptr,0,nullptr}
 };
 
 
diff --git a/src/3rdparty/squirrel/squirrel/sqclass.cpp b/src/3rdparty/squirrel/squirrel/sqclass.cpp
index 71743f464..643685c9e 100644
--- a/src/3rdparty/squirrel/squirrel/sqclass.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqclass.cpp
@@ -15,8 +15,8 @@
 SQClass::SQClass(SQSharedState *ss,SQClass *base)
 {
 	_base = base;
-	_typetag = 0;
-	_hook = NULL;
+	_typetag = nullptr;
+	_hook = nullptr;
 	_udsize = 0;
 	_metamethods.resize(MT_LAST); //size it to max size
 	if(_base) {
@@ -139,8 +139,8 @@ bool SQClass::GetAttributes(const SQObjectPtr &key,SQObjectPtr &outval)
 ///////////////////////////////////////////////////////////////////////
 void SQInstance::Init(SQSharedState *ss)
 {
-	_userpointer = NULL;
-	_hook = NULL;
+	_userpointer = nullptr;
+	_hook = nullptr;
 	__ObjAddRef(_class);
 	_delegate = _class->_members;
 	INIT_CHAIN();
@@ -196,7 +196,7 @@ bool SQInstance::GetMetaMethod(SQVM *v,SQMetaMethod mm,SQObjectPtr &res)
 bool SQInstance::InstanceOf(SQClass *trg)
 {
 	SQClass *parent = _class;
-	while(parent != NULL) {
+	while(parent != nullptr) {
 		if(parent == trg)
 			return true;
 		parent = parent->_base;
diff --git a/src/3rdparty/squirrel/squirrel/sqclosure.h b/src/3rdparty/squirrel/squirrel/sqclosure.h
index 8480fb8af..49a84b792 100644
--- a/src/3rdparty/squirrel/squirrel/sqclosure.h
+++ b/src/3rdparty/squirrel/squirrel/sqclosure.h
@@ -45,7 +45,7 @@ struct SQGenerator : public CHAINABLE_OBJ
 {
 	enum SQGeneratorState{eRunning,eSuspended,eDead};
 private:
-	SQGenerator(SQSharedState *ss,SQClosure *closure){_closure=closure;_state=eRunning;_ci._generator=NULL;INIT_CHAIN();ADD_TO_CHAIN(&_ss(this)->_gc_chain,this);}
+	SQGenerator(SQSharedState *ss,SQClosure *closure){_closure=closure;_state=eRunning;_ci._generator=nullptr;INIT_CHAIN();ADD_TO_CHAIN(&_ss(this)->_gc_chain,this);}
 public:
 	static SQGenerator *Create(SQSharedState *ss,SQClosure *closure){
 		SQGenerator *nc=(SQGenerator*)SQ_MALLOC(sizeof(SQGenerator));
diff --git a/src/3rdparty/squirrel/squirrel/sqcompiler.cpp b/src/3rdparty/squirrel/squirrel/sqcompiler.cpp
index a80e08639..3af111a28 100644
--- a/src/3rdparty/squirrel/squirrel/sqcompiler.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqcompiler.cpp
@@ -57,7 +57,7 @@ typedef sqvector<ExpState> ExpStateVec;
 class SQCompiler
 {
 public:
-	SQCompiler(SQVM *v, SQLEXREADFUNC rg, SQUserPointer up, const SQChar* sourcename, bool raiseerror, bool lineinfo) : _token(0), _fs(NULL), _lex(_ss(v), rg, up, ThrowError, this), _debugline(0), _debugop(0)
+	SQCompiler(SQVM *v, SQLEXREADFUNC rg, SQUserPointer up, const SQChar* sourcename, bool raiseerror, bool lineinfo) : _token(0), _fs(nullptr), _lex(_ss(v), rg, up, ThrowError, this), _debugline(0), _debugop(0)
 	{
 		_vm=v;
 		_sourcename = SQString::Create(_ss(v), sourcename);
@@ -164,7 +164,7 @@ public:
 		_debugline = 1;
 		_debugop = 0;
 
-		SQFuncState funcstate(_ss(_vm), NULL,ThrowError,this);
+		SQFuncState funcstate(_ss(_vm), nullptr,ThrowError,this);
 		funcstate._name = SQString::Create(_ss(_vm), "main");
 		_fs = &funcstate;
 		_fs->AddParameter(_fs->CreateString("this"));
diff --git a/src/3rdparty/squirrel/squirrel/sqlexer.cpp b/src/3rdparty/squirrel/squirrel/sqlexer.cpp
index 77c487a26..a4bac8227 100644
--- a/src/3rdparty/squirrel/squirrel/sqlexer.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqlexer.cpp
@@ -87,7 +87,7 @@ SQLexer::SQLexer(SQSharedState *ss, SQLEXREADFUNC rg, SQUserPointer up,CompilerE
 	_prevtoken = -1;
 	_curtoken = -1;
 
-	_svalue = NULL;
+	_svalue = nullptr;
 	_nvalue = 0;
 	_fvalue = 0;
 
@@ -119,7 +119,7 @@ const SQChar *SQLexer::Tok2Str(SQInteger tok)
 		if(((SQInteger)_integer(val)) == tok)
 			return _stringval(key);
 	}
-	return NULL;
+	return nullptr;
 }
 
 void SQLexer::LexBlockComment()
diff --git a/src/3rdparty/squirrel/squirrel/sqobject.cpp b/src/3rdparty/squirrel/squirrel/sqobject.cpp
index a113f316d..298efe610 100644
--- a/src/3rdparty/squirrel/squirrel/sqobject.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqobject.cpp
@@ -41,7 +41,7 @@ const SQChar *IdType2Name(SQObjectType type)
 	case _RT_INSTANCE: return "instance";
 	case _RT_WEAKREF: return "weakref";
 	default:
-		return NULL;
+		return nullptr;
 	}
 }
 
@@ -101,13 +101,13 @@ SQRefCounted::~SQRefCounted()
 {
 	if(_weakref) {
 		_weakref->_obj._type = OT_NULL;
-		_weakref->_obj._unVal.pRefCounted = NULL;
+		_weakref->_obj._unVal.pRefCounted = nullptr;
 	}
 }
 
 void SQWeakRef::Release() {
 	if(ISREFCOUNTED(_obj._type)) {
-		_obj._unVal.pRefCounted->_weakref = NULL;
+		_obj._unVal.pRefCounted->_weakref = nullptr;
 	}
 	sq_delete(this,SQWeakRef);
 }
@@ -149,7 +149,7 @@ bool SQGenerator::Yield(SQVM *v)
 	for(SQInteger j = nvargs - 1; j >= 0; j--) {
 		_vargsstack.push_back(v->_vargsstack[vargsbase+j]);
 	}
-	_ci._generator=NULL;
+	_ci._generator=nullptr;
 	for(SQInteger i=0;i<_ci._etraps;i++) {
 		_etraps.push_back(v->_etraps.top());
 		v->_etraps.pop_back();
@@ -204,7 +204,7 @@ void SQArray::Extend(const SQArray *a){
 const SQChar* SQFunctionProto::GetLocal(SQVM *vm,SQUnsignedInteger stackbase,SQUnsignedInteger nseq,SQUnsignedInteger nop)
 {
 	SQUnsignedInteger nvars=_nlocalvarinfos;
-	const SQChar *res=NULL;
+	const SQChar *res=nullptr;
 	if(nvars>=nseq){
 		for(SQUnsignedInteger i=0;i<nvars;i++){
 			if(_localvarinfos[i]._start_op<=nop && _localvarinfos[i]._end_op>=nop)
diff --git a/src/3rdparty/squirrel/squirrel/sqobject.h b/src/3rdparty/squirrel/squirrel/sqobject.h
index 9212766ee..129674b5a 100644
--- a/src/3rdparty/squirrel/squirrel/sqobject.h
+++ b/src/3rdparty/squirrel/squirrel/sqobject.h
@@ -56,7 +56,7 @@ enum SQMetaMethod{
 
 struct SQRefCounted
 {
-	SQRefCounted() { _uiRef = 0; _weakref = NULL; }
+	SQRefCounted() { _uiRef = 0; _weakref = nullptr; }
 	virtual ~SQRefCounted();
 	SQWeakRef *GetWeakRef(SQObjectType type);
 	SQUnsignedInteger _uiRef;
@@ -134,7 +134,7 @@ struct SQObjectPtr : public SQObject
 	{
 		SQ_OBJECT_RAWINIT()
 		_type=OT_NULL;
-		_unVal.pUserPointer=NULL;
+		_unVal.pUserPointer=nullptr;
 	}
 	SQObjectPtr(const SQObjectPtr &o)
 	{
@@ -281,7 +281,7 @@ struct SQObjectPtr : public SQObject
 		tOldType = _type;
 		unOldVal = _unVal;
 		_type = OT_NULL;
-		_unVal.pUserPointer = NULL;
+		_unVal.pUserPointer = nullptr;
 		__Release(tOldType,unOldVal);
 	}
 	inline SQObjectPtr& operator=(SQInteger i)
diff --git a/src/3rdparty/squirrel/squirrel/sqstate.cpp b/src/3rdparty/squirrel/squirrel/sqstate.cpp
index 31345d664..0f95c396c 100644
--- a/src/3rdparty/squirrel/squirrel/sqstate.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqstate.cpp
@@ -79,12 +79,12 @@ SQTable *CreateDefaultDelegate(SQSharedState *ss,SQRegFunction *funcz)
 {
 	SQInteger i=0;
 	SQTable *t=SQTable::Create(ss,0);
-	while(funcz[i].name!=0){
+	while(funcz[i].name!=nullptr){
 		SQNativeClosure *nc = SQNativeClosure::Create(ss,funcz[i].f);
 		nc->_nparamscheck = funcz[i].nparamscheck;
 		nc->_name = SQString::Create(ss,funcz[i].name);
 		if(funcz[i].typemask && !CompileTypemask(nc->_typecheck,funcz[i].typemask))
-			return NULL;
+			return nullptr;
 		t->NewSlot(SQString::Create(ss,funcz[i].name),nc);
 		i++;
 	}
@@ -93,15 +93,15 @@ SQTable *CreateDefaultDelegate(SQSharedState *ss,SQRegFunction *funcz)
 
 SQSharedState::SQSharedState()
 {
-	_compilererrorhandler = NULL;
-	_printfunc = NULL;
+	_compilererrorhandler = nullptr;
+	_printfunc = nullptr;
 	_debuginfo = false;
 	_notifyallexceptions = false;
-	_scratchpad=NULL;
+	_scratchpad=nullptr;
 	_scratchpadsize=0;
 	_collectable_free_processing = false;
 #ifndef NO_GARBAGE_COLLECTOR
-	_gc_chain=NULL;
+	_gc_chain=nullptr;
 #endif
 	sq_new(_stringtable,SQStringTable);
 	sq_new(_metamethods,SQObjectPtrVec);
@@ -189,7 +189,7 @@ SQSharedState::~SQSharedState()
 	_refs_table.Finalize();
 #ifndef NO_GARBAGE_COLLECTOR
 	SQCollectable *t = _gc_chain;
-	SQCollectable *nx = NULL;
+	SQCollectable *nx = nullptr;
 	if(t) {
 		t->_uiRef++;
 		while(t) {
@@ -299,7 +299,7 @@ SQInteger SQSharedState::CollectGarbage(SQVM *vm)
 	EnqueueMarkObject(_instance_default_delegate,queue);
 	EnqueueMarkObject(_weakref_default_delegate,queue);
 
-	SQCollectable *tchain=NULL;
+	SQCollectable *tchain=nullptr;
 
 	while (!queue.IsEmpty()) {
 		SQCollectable *q = queue.Pop();
@@ -309,7 +309,7 @@ SQInteger SQSharedState::CollectGarbage(SQVM *vm)
 	}
 
 	SQCollectable *t = _gc_chain;
-	SQCollectable *nx = NULL;
+	SQCollectable *nx = nullptr;
 	if(t) {
 		t->_uiRef++;
 		while(t) {
@@ -340,7 +340,7 @@ SQInteger SQSharedState::CollectGarbage(SQVM *vm)
 #ifndef NO_GARBAGE_COLLECTOR
 void SQCollectable::AddToChain(SQCollectable **chain,SQCollectable *c)
 {
-    c->_prev = NULL;
+    c->_prev = nullptr;
 	c->_next = *chain;
 	if(*chain) (*chain)->_prev = c;
 	*chain = c;
@@ -352,8 +352,8 @@ void SQCollectable::RemoveFromChain(SQCollectable **chain,SQCollectable *c)
 	else *chain = c->_next;
 	if(c->_next)
 		c->_next->_prev = c->_prev;
-	c->_next = NULL;
-	c->_prev = NULL;
+	c->_next = nullptr;
+	c->_prev = nullptr;
 }
 #endif
 
@@ -483,16 +483,16 @@ RefTable::RefNode *RefTable::Get(SQObject &obj,SQHash &mainpos,RefNode **prev,bo
 {
 	RefNode *ref;
 	mainpos = ::HashObj(obj)&(_numofslots-1);
-	*prev = NULL;
+	*prev = nullptr;
 	for (ref = _buckets[mainpos]; ref; ) {
 		if(_rawval(ref->obj) == _rawval(obj) && type(ref->obj) == type(obj))
 			break;
 		*prev = ref;
 		ref = ref->next;
 	}
-	if(ref == NULL && add) {
+	if(ref == nullptr && add) {
 		if(_numofslots == _slotused) {
-			assert(_freelist == 0);
+			assert(_freelist == nullptr);
 			Resize(_numofslots*2);
 			mainpos = ::HashObj(obj)&(_numofslots-1);
 		}
@@ -510,16 +510,16 @@ void RefTable::AllocNodes(SQUnsignedInteger size)
 	RefNode *temp = nodes;
 	SQUnsignedInteger n;
 	for(n = 0; n < size - 1; n++) {
-		bucks[n] = NULL;
+		bucks[n] = nullptr;
 		temp->refs = 0;
 		new (&temp->obj) SQObjectPtr;
 		temp->next = temp+1;
 		temp++;
 	}
-	bucks[n] = NULL;
+	bucks[n] = nullptr;
 	temp->refs = 0;
 	new (&temp->obj) SQObjectPtr;
-	temp->next = NULL;
+	temp->next = nullptr;
 	_freelist = nodes;
 	_nodes = nodes;
 	_buckets = bucks;
@@ -543,7 +543,7 @@ SQStringTable::SQStringTable()
 SQStringTable::~SQStringTable()
 {
 	SQ_FREE(_strings,sizeof(SQString*)*_numofslots);
-	_strings = NULL;
+	_strings = nullptr;
 }
 
 void SQStringTable::AllocNodes(SQInteger size)
@@ -580,8 +580,8 @@ SQString::SQString(const SQChar *news, SQInteger len)
 	_val[len] = '\0';
 	_len = len;
 	_hash = ::_hashstr(news,(size_t)len);
-	_next = NULL;
-	_sharedstate = NULL;
+	_next = nullptr;
+	_sharedstate = nullptr;
 }
 
 void SQStringTable::Resize(SQInteger size)
@@ -605,7 +605,7 @@ void SQStringTable::Resize(SQInteger size)
 void SQStringTable::Remove(SQString *bs)
 {
 	SQString *s;
-	SQString *prev=NULL;
+	SQString *prev=nullptr;
 	SQHash h = bs->_hash&(_numofslots - 1);
 
 	for (s = _strings[h]; s; ){
diff --git a/src/3rdparty/squirrel/squirrel/sqtable.cpp b/src/3rdparty/squirrel/squirrel/sqtable.cpp
index 60146fe73..6f466d686 100644
--- a/src/3rdparty/squirrel/squirrel/sqtable.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqtable.cpp
@@ -18,7 +18,7 @@ SQTable::SQTable(SQSharedState *ss,SQInteger nInitialSize)
 	while(nInitialSize>pow2size)pow2size=pow2size<<1;
 	AllocNodes(pow2size);
 	_usednodes = 0;
-	_delegate = NULL;
+	_delegate = nullptr;
 	INIT_CHAIN();
 	ADD_TO_CHAIN(&_sharedstate->_gc_chain,this);
 }
@@ -39,7 +39,7 @@ void SQTable::AllocNodes(SQInteger nSize)
 	_HashNode *nodes=(_HashNode *)SQ_MALLOC(sizeof(_HashNode)*nSize);
 	for(SQInteger i=0;i<nSize;i++){
 		new (&nodes[i]) _HashNode;
-		nodes[i].next=NULL;
+		nodes[i].next=nullptr;
 	}
 	_numofnodes=nSize;
 	_nodes=nodes;
@@ -120,7 +120,7 @@ bool SQTable::NewSlot(const SQObjectPtr &key,const SQObjectPtr &val)
 		if (mp > n && (othern = &_nodes[mph]) != mp){
 			/* yes; move colliding node into free position */
 			while (othern->next != mp){
-				assert(othern->next != NULL);
+				assert(othern->next != nullptr);
 				othern = othern->next;  /* find previous */
 			}
 			othern->next = n;  /* redo the chain with `n' in place of `mp' */
@@ -129,7 +129,7 @@ bool SQTable::NewSlot(const SQObjectPtr &key,const SQObjectPtr &val)
 			n->next = mp->next;
 			mp->key = _null_;
 			mp->val = _null_;
-			mp->next = NULL;  /* now `mp' is free */
+			mp->next = nullptr;  /* now `mp' is free */
 		}
 		else{
 			/* new node will go into free position */
@@ -141,7 +141,7 @@ bool SQTable::NewSlot(const SQObjectPtr &key,const SQObjectPtr &val)
 	mp->key = key;
 
 	for (;;) {  /* correct `firstfree' */
-		if (type(_firstfree->key) == OT_NULL && _firstfree->next == NULL) {
+		if (type(_firstfree->key) == OT_NULL && _firstfree->next == nullptr) {
 			mp->val = val;
 			_usednodes++;
 			return true;  /* OK; table still has a free place */
@@ -190,7 +190,7 @@ void SQTable::_ClearNodes()
 void SQTable::Finalize()
 {
 	_ClearNodes();
-	SetDelegate(NULL);
+	SetDelegate(nullptr);
 }
 
 void SQTable::Clear()
diff --git a/src/3rdparty/squirrel/squirrel/sqtable.h b/src/3rdparty/squirrel/squirrel/sqtable.h
index fad2fdc60..6bdda1577 100644
--- a/src/3rdparty/squirrel/squirrel/sqtable.h
+++ b/src/3rdparty/squirrel/squirrel/sqtable.h
@@ -27,7 +27,7 @@ struct SQTable : public SQDelegable
 private:
 	struct _HashNode
 	{
-		_HashNode() { next = NULL; }
+		_HashNode() { next = nullptr; }
 		SQObjectPtr val;
 		SQObjectPtr key;
 		_HashNode *next;
@@ -47,14 +47,14 @@ public:
 	{
 		SQTable *newtable = (SQTable*)SQ_MALLOC(sizeof(SQTable));
 		new (newtable) SQTable(ss, nInitialSize);
-		newtable->_delegate = NULL;
+		newtable->_delegate = nullptr;
 		return newtable;
 	}
 	void Finalize() override;
 	SQTable *Clone();
 	~SQTable()
 	{
-		SetDelegate(NULL);
+		SetDelegate(nullptr);
 		REMOVE_FROM_CHAIN(&_sharedstate->_gc_chain, this);
 		for (SQInteger i = 0; i < _numofnodes; i++) _nodes[i].~_HashNode();
 		SQ_FREE(_nodes, _numofnodes * sizeof(_HashNode));
@@ -70,7 +70,7 @@ public:
 				return n;
 			}
 		}while((n = n->next));
-		return NULL;
+		return nullptr;
 	}
 	bool Get(const SQObjectPtr &key,SQObjectPtr &val);
 	void Remove(const SQObjectPtr &key);
diff --git a/src/3rdparty/squirrel/squirrel/squserdata.h b/src/3rdparty/squirrel/squirrel/squserdata.h
index ca4933de2..aed3e8349 100644
--- a/src/3rdparty/squirrel/squirrel/squserdata.h
+++ b/src/3rdparty/squirrel/squirrel/squserdata.h
@@ -4,12 +4,12 @@
 
 struct SQUserData : SQDelegable
 {
-	SQUserData(SQSharedState *ss, SQInteger size){ _delegate = 0; _hook = NULL; INIT_CHAIN(); ADD_TO_CHAIN(&_ss(this)->_gc_chain, this); _size = size; _typetag = 0;
+	SQUserData(SQSharedState *ss, SQInteger size){ _delegate = nullptr; _hook = nullptr; INIT_CHAIN(); ADD_TO_CHAIN(&_ss(this)->_gc_chain, this); _size = size; _typetag = nullptr;
 }
 	~SQUserData()
 	{
 		REMOVE_FROM_CHAIN(&_ss(this)->_gc_chain, this);
-		SetDelegate(NULL);
+		SetDelegate(nullptr);
 	}
 	static SQUserData* Create(SQSharedState *ss, SQInteger size)
 	{
@@ -19,7 +19,7 @@ struct SQUserData : SQDelegable
 	}
 #ifndef NO_GARBAGE_COLLECTOR
 	void EnqueueMarkObjectForChildren(SQGCMarkerQueue &queue);
-	void Finalize(){SetDelegate(NULL);}
+	void Finalize(){SetDelegate(nullptr);}
 #endif
 	void Release() {
 		if (_hook) _hook(_val,_size);
diff --git a/src/3rdparty/squirrel/squirrel/squtils.h b/src/3rdparty/squirrel/squirrel/squtils.h
index b1138dcb1..d7d260dba 100644
--- a/src/3rdparty/squirrel/squirrel/squtils.h
+++ b/src/3rdparty/squirrel/squirrel/squtils.h
@@ -18,7 +18,7 @@ template<typename T> class sqvector
 public:
 	sqvector()
 	{
-		_vals = NULL;
+		_vals = nullptr;
 		_size = 0;
 		_allocated = 0;
 	}
diff --git a/src/3rdparty/squirrel/squirrel/sqvm.cpp b/src/3rdparty/squirrel/squirrel/sqvm.cpp
index 1987a3009..b6f2c526d 100644
--- a/src/3rdparty/squirrel/squirrel/sqvm.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqvm.cpp
@@ -33,7 +33,7 @@ void SQVM::ClearStack(SQInteger last_top)
 		tOldType = o._type;
 		unOldVal = o._unVal;
 		o._type = OT_NULL;
-		o._unVal.pUserPointer = NULL;
+		o._unVal.pUserPointer = nullptr;
 		__Release(tOldType,unOldVal);
 	}
 }
@@ -107,7 +107,7 @@ SQVM::SQVM(SQSharedState *ss)
 	_suspended_target=-1;
 	_suspended_root = SQFalse;
 	_suspended_traps=0;
-	_foreignptr=NULL;
+	_foreignptr=nullptr;
 	_nnativecalls=0;
 	_lasterror = _null_;
 	_errorhandler = _null_;
@@ -115,12 +115,12 @@ SQVM::SQVM(SQSharedState *ss)
 	_can_suspend = false;
 	_in_stackoverflow = false;
 	_ops_till_suspend = 0;
-	_callsstack = NULL;
+	_callsstack = nullptr;
 	_callsstacksize = 0;
 	_alloccallsstacksize = 0;
 	_top = 0;
 	_stackbase = 0;
-	ci = NULL;
+	ci = nullptr;
 	INIT_CHAIN();ADD_TO_CHAIN(&_ss(this)->_gc_chain,this);
 }
 
@@ -379,7 +379,7 @@ bool SQVM::StartCall(SQClosure *closure,SQInteger target,SQInteger args,SQIntege
 
 	if (!tailcall) {
 		CallInfo lc = {};
-		lc._generator = NULL;
+		lc._generator = nullptr;
 		lc._etraps = 0;
 		lc._prevstkbase = (SQInt32) ( stackbase - _stackbase );
 		lc._target = (SQInt32) target;
@@ -557,7 +557,7 @@ bool SQVM::DELEGATE_OP(SQObjectPtr &trg,SQObjectPtr &o1,SQObjectPtr &o2)
 		}
 		break;
 	case OT_NULL:
-		_table(o1)->SetDelegate(NULL);
+		_table(o1)->SetDelegate(nullptr);
 		break;
 	default:
 		Raise_Error("using '%s' as delegate", GetTypeName(o2));
@@ -627,7 +627,7 @@ bool SQVM::GETVARGV_OP(SQObjectPtr &target,SQObjectPtr &index,CallInfo *ci)
 
 bool SQVM::CLASS_OP(SQObjectPtr &target,SQInteger baseclass,SQInteger attributes)
 {
-	SQClass *base = NULL;
+	SQClass *base = nullptr;
 	SQObjectPtr attrs;
 	if(baseclass != -1) {
 		if(type(_stack._vals[_stackbase+baseclass]) != OT_CLASS) { Raise_Error("trying to inherit from a %s",GetTypeName(_stack._vals[_stackbase+baseclass])); return false; }
@@ -708,7 +708,7 @@ bool SQVM::Execute(SQObjectPtr &closure, SQInteger target, SQInteger nargs, SQIn
 			temp_reg = closure;
 			if(!StartCall(_closure(temp_reg), _top - nargs, nargs, stackbase, false)) {
 				//call the handler if there are no calls in the stack, if not relies on the previous node
-				if(ci == NULL) CallErrorHandler(_lasterror);
+				if(ci == nullptr) CallErrorHandler(_lasterror);
 				return false;
 			}
 			if (_funcproto(_closure(temp_reg)->_function)->_bgenerator) {
@@ -1160,7 +1160,7 @@ bool SQVM::CallNative(SQNativeClosure *nclosure,SQInteger nargs,SQInteger stackb
 	_top = stackbase + nargs;
 	CallInfo lci = {};
 	lci._closure = nclosure;
-	lci._generator = NULL;
+	lci._generator = nullptr;
 	lci._etraps = 0;
 	lci._prevstkbase = (SQInt32) (stackbase - _stackbase);
 	lci._ncalls = 1;