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(* SShortWholeIO.def provides input/output of SHORTINT/SHORTCARD over channels.
Copyright (C) 2013-2023 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. *)
DEFINITION MODULE SShortWholeIO;
(* Input and output of whole numbers in decimal text form over
default channels. The read result is of the type
IOConsts.ReadResults.
*)
(* 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}
*)
PROCEDURE ReadInt (VAR int: SHORTINT);
(* Skips leading spaces, and removes any remaining characters
from the default input channel 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.
*)
PROCEDURE WriteInt (int: SHORTINT; width: CARDINAL);
(* Writes the value of int to the default output channel in
text form, in a field of the given minimum width.
*)
PROCEDURE ReadCard (VAR card: SHORTCARD);
(* Skips leading spaces, and removes any remaining characters
from the default input channel 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.
*)
PROCEDURE WriteCard (card: SHORTCARD; width: CARDINAL);
(* Writes the value of card to the default output channel in
text form, in a field of the given minimum width.
*)
END SShortWholeIO.
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