goto &{$_[0]->{state} = \&stateReadLit};

##</code><code>##

$_[0]->{state} = \&stateReadLit;  # assign the coderef to the stateReadLit subroutine to the 'state' element of the hash referenced by $_[0]
goto &stateReadLit;  # or goto &{ $_[0]->{state} };