(* nameKey.def provides a dynamic binary tree name to key. Copyright (C) 2015-2024 Free Software Foundation, Inc. Contributed by Gaius Mulley . 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 . *) 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.