- : Parsetree.expression =
{Parsetree.pexp_desc =
  Parsetree.Pexp_constant
   {Parsetree.pconst_desc = Parsetree.Pconst_integer ("1", None);
    pconst_loc =
     {Location.loc_start =
       {Lexing.pos_fname = ""; pos_lnum = 1; pos_bol = 0; pos_cnum = 0};
      loc_end =
       {Lexing.pos_fname = ""; pos_lnum = 1; pos_bol = 0; pos_cnum = 1};
      loc_ghost = false}};
 pexp_loc =
  {Location.loc_start =
    {Lexing.pos_fname = ""; pos_lnum = 1; pos_bol = 0; pos_cnum = 0};
   loc_end = {Lexing.pos_fname = ""; pos_lnum = 1; pos_bol = 0; pos_cnum = 1};
   loc_ghost = false};
 pexp_loc_stack = []; pexp_attributes = []}