Add ret function

include/interpret/statement.hpp

@@ -66,6 +66,11 @@ namespace Interpret
 		FunctionCallStatement(std::string const & label);
 	};
 
+	struct ReturnFromFunctionStatement : Statement
+	{
+		void Execute(Execute::Flags & flags, Execute::State & state, Execute::Registers & registers) override;
+	};
+
 	struct SetStatement : Statement
 	{
 		Value firstArgument;

include/token/operandtype.hpp

@@ -14,6 +14,7 @@ namespace Token
 		ShiftIntegerRight,
 		Jump,
 		CallFunction,
+		ReturnFromFunction,
 		LessThanInteger,
 		GreaterThanInteger,
 		EqualInteger,