refactor implementation of END indexing in interpreter (bug #58953) * oct-lvalue.h, oct-lvalue.cc (octave_lvalue::eval_for_numel): New function. (octave_lvalue::m_nel): Delete data member. (octave_lvalue::numel (octave_idx_type)): Delete. (octave_lvalue::numel (void) const): Compute result instead of returning cached value. * pt-eval.h, pt-eval.cc (tree_evaluator::convert_to_const_vector): Simplify. (Fend): Call tree_evaluator::evaluate_end_expression to do the real work. (tree_evaluator::make_value_list): Don't check for magic_end here. (end_value, tree_evaluator::evaluate_end_expression): New functions. (tree_evaluator::m_index_list, tree_evaluator::m_index_type): New data members. (tree_evaluator::set_indexed_object, tree_evaluator::index_list, tree_evaluator::set_index_list, tree_evaluator::clear_index_list, tree_evaluator::append_index_list, tree_evaluator::index_type): New functions. * pt-idx.cc (make_value_list): Delete. (tree_index_expression::lvalue, tree_index_expression::evaluate_n): Refactor to avoid evaluating partial expressions to obtain values for the END function. Instead, cache info necessary to do that job as needed and inside the END function itself.

classdef myclass1 < handle
  properties
    data
  end
  methods
    function obj = myclass1 ()
      obj.data = 1001:1005;
    end
  end
end