program t82_setin;

{ t82 -- `in' with a RUN-TIME element.

  CALC.INC's Clear loop is `until Upcase(Ch) in ['Y','N']': the element is a
  value in AX, not a compile-time constant, so the bit test has to run.  The
  set may be an inline literal (code-resident), a typed constant (also
  code-resident) or a data set (a record field): the address is chosen
  accordingly, then byte = (e - base) DIV 8 and bit = (e - base) MOD 8.

  Also covers `Ch in ['a'..'z']' (a range in a literal) and an enumerated data
  set with both a present and an absent element. }

const
   Digits : set of Char = ['0'..'9'];

type
   Attr = (Constant, Formula, Txt, OverWritten, Locked, Calculated);
   Cell = record
      S : set of Attr;
      N : integer;
   end;

var
   c : char;
   i : integer;
   sh : array [1..2, 1..3] of Cell;

begin
   c := 'Y';
   if Upcase (c) in ['Y', 'N'] then writeln ('yes') else writeln ('no');
   c := 'x';
   if Upcase (c) in ['Y', 'N'] then writeln ('yes') else writeln ('no');

   c := 'a';
   if c in ['a'..'z'] then writeln ('lower') else writeln ('not');
   c := 'A';
   if c in ['a'..'z'] then writeln ('lower') else writeln ('not');

   sh[1,1].S := [Locked];
   i := 1;
   if i in sh[1,1].S then writeln ('locked') else writeln ('not-locked');
   i := 4;
   if i in sh[1,1].S then writeln ('locked') else writeln ('not-locked');

   c := '7';
   if c in Digits then writeln ('digit') else writeln ('not');
   c := 'x';
   if c in Digits then writeln ('digit') else writeln ('not')
end.