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(* nameKey.def provides a dynamic binary tree name to key.
Copyright (C) 2015-2025 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 nameKey ;
FROM SYSTEM IMPORT ADDRESS ;
CONST
NulName = 0 ; (* No legal name. *)
(* NulName is not present in the Tree *)
TYPE
Name = CARDINAL ;
(*
makeKey - returns the Key of the symbol, a. If a is not in the
name table then it is added, otherwise the Key of a is returned
directly. Note that the name table has no scope - it merely
presents a more convienient way of expressing strings. By a Key.
These keys last for the duration of compilation.
*)
PROCEDURE makeKey (a: ARRAY OF CHAR) : Name ;
(*
makekey - returns the Key of the symbol, a. If a is not in the
name table then it is added, otherwise the Key of a is returned
directly. Note that the name table has no scope - it merely
presents a more convienient way of expressing strings. By a Key.
These keys last for the duration of compilation.
*)
PROCEDURE makekey (a: ADDRESS) : Name ;
(*
getKey - returns the name, a, of the key, key.
*)
PROCEDURE getKey (key: Name; VAR a: ARRAY OF CHAR) ;
(*
lengthKey - returns the length of a Key.
*)
PROCEDURE lengthKey (key: Name) : CARDINAL ;
(*
isKey - returns TRUE if string, a, is currently a key.
*)
PROCEDURE isKey (a: ARRAY OF CHAR) : BOOLEAN ;
(*
writeKey - Display the symbol represented by Key.
*)
PROCEDURE writeKey (key: Name) ;
(*
isSameExcludingCase - returns TRUE if key1 and key2 are
the same. It is case insensitive.
*)
PROCEDURE isSameExcludingCase (key1, key2: Name) : BOOLEAN ;
(*
keyToCharStar - returns the C char * string equivalent for, key.
*)
PROCEDURE keyToCharStar (key: Name) : ADDRESS ;
END nameKey.
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