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(* wlists.def word lists module.
Copyright (C) 2015-2024 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius@glam.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.
You should have received a copy of the GNU General Public License
along with GNU Modula-2; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. *)
DEFINITION MODULE wlists ;
FROM SYSTEM IMPORT WORD ;
TYPE
wlist ;
performOperation = PROCEDURE (WORD) ;
(*
initList - creates a new wlist, l.
*)
PROCEDURE initList () : wlist ;
(*
killList - deletes the complete wlist, l.
*)
PROCEDURE killList (VAR l: wlist) ;
(*
putItemIntoList - places an WORD, c, into wlist, l.
*)
PROCEDURE putItemIntoList (l: wlist; c: WORD) ;
(*
getItemFromList - retrieves the nth WORD from wlist, l.
*)
PROCEDURE getItemFromList (l: wlist; n: CARDINAL) : WORD ;
(*
getIndexOfList - returns the index for WORD, c, in wlist, l.
If more than one CARDINAL, c, exists the index
for the first is returned.
*)
PROCEDURE getIndexOfList (l: wlist; c: WORD) : CARDINAL ;
(*
noOfItemsInList - returns the number of items in wlist, l.
*)
PROCEDURE noOfItemsInList (l: wlist) : CARDINAL ;
(*
includeItemIntoList - adds an WORD, c, into a wlist providing
the value does not already exist.
*)
PROCEDURE includeItemIntoList (l: wlist; c: WORD) ;
(*
removeItemFromList - removes an WORD, c, from a wlist.
It assumes that this value only appears once.
*)
PROCEDURE removeItemFromList (l: wlist; c: WORD) ;
(*
replaceItemInList - replace the nth WORD in wlist, l.
The first item in a wlists is at index, 1.
If the index, n, is out of range nothing is changed.
*)
PROCEDURE replaceItemInList (l: wlist; n: CARDINAL; w: WORD) ;
(*
isItemInList - returns true if a WORD, c, was found in wlist, l.
*)
PROCEDURE isItemInList (l: wlist; c: WORD) : BOOLEAN ;
(*
foreachItemInListDo - calls procedure, P, foreach item in wlist, l.
*)
PROCEDURE foreachItemInListDo (l: wlist; p: performOperation) ;
(*
duplicateList - returns a duplicate wlist derived from, l.
*)
PROCEDURE duplicateList (l: wlist) : wlist ;
END wlists.
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