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(* DynamicPath.def implements a path for DynamicStrings.
Copyright (C) 2001-2025 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 DynamicPath ; (*!m2iso+gm2*)
FROM DynamicStrings IMPORT String ;
TYPE
PathList ;
(*
InitPathList - creates a new empty path list.
*)
PROCEDURE InitPathList (str: String) : PathList ;
(*
KillPathList - places list pl onto the freelist.
Postcondition: pl will be NIL.
*)
PROCEDURE KillPathList (VAR pl: PathList) ;
(*
Cons - appends str to the end of a path list.
If pl is NIL a new list is created and returned
containing str.
*)
PROCEDURE Cons (pl: PathList; str: String) : PathList ;
(*
ConsList - concatenates path list left and right together.
*)
PROCEDURE ConsList (left, right: PathList) : PathList ;
(*
Stash - returns pl before setting pl to NIL.
*)
PROCEDURE Stash (VAR pl: PathList) : PathList ;
(*
FindFileName - returns NIL if a file cannot be found otherwise
it returns the path including the filename.
*)
PROCEDURE FindFileName (filename: String; pl: PathList) : String ;
(*
DumpPath - debugging dump of the pathlist.
*)
PROCEDURE DumpPath (name: String; pl: PathList) ;
END DynamicPath.
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