gm2-libs-iso/ShortWholeIO

DEFINITION MODULE ShortWholeIO;

  (* Input and output of whole numbers in decimal text form
     over specified channels.  The read result is of the
     type IOConsts.ReadResults.
  *)

IMPORT IOChan;

  (* The text form of a signed whole number is
       ["+" | "-"], decimal digit, {decimal digit}

     The text form of an unsigned whole number is
       decimal digit, {decimal digit}
  *)

ReadInt
PROCEDURE ReadInt (cid: IOChan.ChanId; VAR int: SHORTINT);
  (* Skips leading spaces, and removes any remaining characters
     from cid that form part of a signed whole number.  The
     value of this number is assigned to int.  The read result
     is set to the value allRight, outOfRange, wrongFormat,
     endOfLine, or endOfInput.
  *)

WriteInt
PROCEDURE WriteInt (cid: IOChan.ChanId; int: SHORTINT;
                    width: CARDINAL);
  (* Writes the value of int to cid in text form, in a field of
     the given minimum width. *)

ReadCard
PROCEDURE ReadCard (cid: IOChan.ChanId; VAR card: SHORTCARD);
  (* Skips leading spaces, and removes any remaining characters
     from cid that form part of an unsigned whole number.  The
     value of this number is assigned to card. The read result
     is set to the value allRight, outOfRange, wrongFormat,
     endOfLine, or endOfInput.
  *)

WriteCard
PROCEDURE WriteCard (cid: IOChan.ChanId; card: SHORTCARD;
                     width: CARDINAL);
  (* Writes the value of card to cid in text form, in a field
     of the given minimum width. *)

END ShortWholeIO.