diff --git a/project/components/ast.hpp b/project/components/ast.hpp
index 6cec65d..16645a9 100644
--- a/project/components/ast.hpp
+++ b/project/components/ast.hpp
@@ -173,7 +173,7 @@ struct Code
 	Code        duplicate()                { return GEN_NS duplicate(* this); }	\
 	bool        is_equal( Code other )     { return GEN_NS is_equal(* this, other); } \
 	bool        is_body()                  { return GEN_NS is_body(* this); } \
-	bool        is_valid();                \
+	bool        is_valid()                 { return GEN_NS is_valid(* this); } \
 	void        set_global();              \
 	String      to_string();               \
 	Typename&   operator = ( AST* other ); \
diff --git a/project/components/gen/ast_inlines.hpp b/project/components/gen/ast_inlines.hpp
index b336234..c787fa4 100644
--- a/project/components/gen/ast_inlines.hpp
+++ b/project/components/gen/ast_inlines.hpp
@@ -7,11 +7,6 @@
 
 #pragma region generated code inline implementation
 
-inline bool Code::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void Code::set_global()
 {
 	if ( ast == nullptr )
@@ -38,11 +33,6 @@ inline Code::operator bool()
 	return ast != nullptr;
 }
 
-inline bool CodeBody::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeBody::set_global()
 {
 	if ( ast == nullptr )
@@ -69,11 +59,6 @@ inline CodeBody::operator bool()
 	return ast != nullptr;
 }
 
-inline bool CodeAttributes::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeAttributes::set_global()
 {
 	if ( ast == nullptr )
@@ -120,11 +105,6 @@ inline AST_Attributes* CodeAttributes::operator->()
 	return ast;
 }
 
-inline bool CodeComment::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeComment::set_global()
 {
 	if ( ast == nullptr )
@@ -171,11 +151,6 @@ inline AST_Comment* CodeComment::operator->()
 	return ast;
 }
 
-inline bool CodeConstructor::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeConstructor::set_global()
 {
 	if ( ast == nullptr )
@@ -222,11 +197,6 @@ inline AST_Constructor* CodeConstructor::operator->()
 	return ast;
 }
 
-inline bool CodeClass::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeClass::set_global()
 {
 	if ( ast == nullptr )
@@ -253,11 +223,6 @@ inline CodeClass::operator bool()
 	return ast != nullptr;
 }
 
-inline bool CodeDefine::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeDefine::set_global()
 {
 	if ( ast == nullptr )
@@ -304,11 +269,6 @@ inline AST_Define* CodeDefine::operator->()
 	return ast;
 }
 
-inline bool CodeDestructor::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeDestructor::set_global()
 {
 	if ( ast == nullptr )
@@ -355,11 +315,6 @@ inline AST_Destructor* CodeDestructor::operator->()
 	return ast;
 }
 
-inline bool CodeEnum::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeEnum::set_global()
 {
 	if ( ast == nullptr )
@@ -406,11 +361,6 @@ inline AST_Enum* CodeEnum::operator->()
 	return ast;
 }
 
-inline bool CodeExec::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeExec::set_global()
 {
 	if ( ast == nullptr )
@@ -457,11 +407,6 @@ inline AST_Exec* CodeExec::operator->()
 	return ast;
 }
 
-inline bool CodeExtern::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeExtern::set_global()
 {
 	if ( ast == nullptr )
@@ -508,11 +453,6 @@ inline AST_Extern* CodeExtern::operator->()
 	return ast;
 }
 
-inline bool CodeFriend::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeFriend::set_global()
 {
 	if ( ast == nullptr )
@@ -559,11 +499,6 @@ inline AST_Friend* CodeFriend::operator->()
 	return ast;
 }
 
-inline bool CodeFn::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeFn::set_global()
 {
 	if ( ast == nullptr )
@@ -610,11 +545,6 @@ inline AST_Fn* CodeFn::operator->()
 	return ast;
 }
 
-inline bool CodeInclude::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeInclude::set_global()
 {
 	if ( ast == nullptr )
@@ -661,11 +591,6 @@ inline AST_Include* CodeInclude::operator->()
 	return ast;
 }
 
-inline bool CodeModule::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeModule::set_global()
 {
 	if ( ast == nullptr )
@@ -712,11 +637,6 @@ inline AST_Module* CodeModule::operator->()
 	return ast;
 }
 
-inline bool CodeNS::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeNS::set_global()
 {
 	if ( ast == nullptr )
@@ -763,11 +683,6 @@ inline AST_NS* CodeNS::operator->()
 	return ast;
 }
 
-inline bool CodeOperator::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeOperator::set_global()
 {
 	if ( ast == nullptr )
@@ -814,11 +729,6 @@ inline AST_Operator* CodeOperator::operator->()
 	return ast;
 }
 
-inline bool CodeOpCast::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeOpCast::set_global()
 {
 	if ( ast == nullptr )
@@ -865,11 +775,6 @@ inline AST_OpCast* CodeOpCast::operator->()
 	return ast;
 }
 
-inline bool CodeParam::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeParam::set_global()
 {
 	if ( ast == nullptr )
@@ -896,11 +801,6 @@ inline CodeParam::operator bool()
 	return ast != nullptr;
 }
 
-inline bool CodePragma::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodePragma::set_global()
 {
 	if ( ast == nullptr )
@@ -947,11 +847,6 @@ inline AST_Pragma* CodePragma::operator->()
 	return ast;
 }
 
-inline bool CodePreprocessCond::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodePreprocessCond::set_global()
 {
 	if ( ast == nullptr )
@@ -998,11 +893,6 @@ inline AST_PreprocessCond* CodePreprocessCond::operator->()
 	return ast;
 }
 
-inline bool CodeSpecifiers::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeSpecifiers::set_global()
 {
 	if ( ast == nullptr )
@@ -1029,11 +919,6 @@ inline CodeSpecifiers::operator bool()
 	return ast != nullptr;
 }
 
-inline bool CodeStruct::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeStruct::set_global()
 {
 	if ( ast == nullptr )
@@ -1060,11 +945,6 @@ inline CodeStruct::operator bool()
 	return ast != nullptr;
 }
 
-inline bool CodeTemplate::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeTemplate::set_global()
 {
 	if ( ast == nullptr )
@@ -1111,11 +991,6 @@ inline AST_Template* CodeTemplate::operator->()
 	return ast;
 }
 
-inline bool CodeType::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeType::set_global()
 {
 	if ( ast == nullptr )
@@ -1162,11 +1037,6 @@ inline AST_Type* CodeType::operator->()
 	return ast;
 }
 
-inline bool CodeTypedef::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeTypedef::set_global()
 {
 	if ( ast == nullptr )
@@ -1213,11 +1083,6 @@ inline AST_Typedef* CodeTypedef::operator->()
 	return ast;
 }
 
-inline bool CodeUnion::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeUnion::set_global()
 {
 	if ( ast == nullptr )
@@ -1264,11 +1129,6 @@ inline AST_Union* CodeUnion::operator->()
 	return ast;
 }
 
-inline bool CodeUsing::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeUsing::set_global()
 {
 	if ( ast == nullptr )
@@ -1315,11 +1175,6 @@ inline AST_Using* CodeUsing::operator->()
 	return ast;
 }
 
-inline bool CodeVar::is_valid()
-{
-	return (AST*)ast != nullptr && rcast( AST*, ast )->Type != CodeT::Invalid;
-}
-
 inline void CodeVar::set_global()
 {
 	if ( ast == nullptr )
diff --git a/project/components/inlines.hpp b/project/components/inlines.hpp
index e80c567..48e6f77 100644
--- a/project/components/inlines.hpp
+++ b/project/components/inlines.hpp
@@ -133,6 +133,12 @@ bool is_equal( Code self, Code other )
 	return is_equal( self.ast, other.ast );
 }
 
+inline
+bool is_valid(Code self)
+{
+	return self.ast != nullptr && self.ast->Type != CodeT::Invalid;
+}
+
 inline
 Code& Code::operator ++()
 {
diff --git a/project/helpers/helper.hpp b/project/helpers/helper.hpp
index fc91e95..03ca48c 100644
--- a/project/helpers/helper.hpp
+++ b/project/helpers/helper.hpp
@@ -354,11 +354,6 @@ CodeBody gen_ast_inlines()
 	char const* code_impl_tmpl = stringize(
 		\n
 		inline
-		bool <typename>::is_valid()
-		{
-			return (AST*) ast != nullptr && rcast( AST*, ast)->Type != CodeT::Invalid;
-		}
-		inline
 		void <typename>::set_global()
 		{
 			if ( ast == nullptr )