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    1/*  Part of SWI-Prolog
    2
    3    Author:        Jan Wielemaker
    4    E-mail:        J.Wielemaker@vu.nl
    5    WWW:           http://www.swi-prolog.org
    6    Copyright (c)  2006-2020, University of Amsterdam
    7                              VU University Amsterdam
    8                              CWI, Amsterdam
    9    All rights reserved.
   10
   11    Redistribution and use in source and binary forms, with or without
   12    modification, are permitted provided that the following conditions
   13    are met:
   14
   15    1. Redistributions of source code must retain the above copyright
   16       notice, this list of conditions and the following disclaimer.
   17
   18    2. Redistributions in binary form must reproduce the above copyright
   19       notice, this list of conditions and the following disclaimer in
   20       the documentation and/or other materials provided with the
   21       distribution.
   22
   23    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   24    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   25    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   26    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   27    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   28    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   29    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   30    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   31    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   33    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   34    POSSIBILITY OF SUCH DAMAGE.
   35*/
   36
   37:- module(pldoc,
   38          [ doc_collect/1,              % +Bool
   39
   40            pldoc_loading/0             % True if we are loading
   41          ]).   42:- dynamic
   43    pldoc_loading/0.   44
   45pldoc_loading.
   46
   47:- dynamic   user:file_search_path/2.   48:- multifile user:file_search_path/2.   49
   50user:file_search_path(pldoc, library(pldoc)).
   51user:file_search_path(package_documentation, swi('doc/packages')).
   52
   53:- multifile
   54    tag_order/2.                    % +Tag, -Order
   55
   56:- create_prolog_flag(pldoc_collecting, false, []).   57
   58doc_collect(OnOff) :-
   59    set_prolog_flag(pldoc_collecting, OnOff).
   60
   61:- doc_collect(true).   62
   63:- use_module(pldoc(doc_process)).   64:- use_module(pldoc(doc_register)).   65:- use_module(pldoc(doc_modes)).   66:- use_module(pldoc(doc_wiki)).   67:- use_module(library(debug)).   68:- use_module(library(option)).   69:- use_module(library(lists)).   70:- use_module(library(operators)).   71:- use_module(library(prolog_source)).   72
   73
   74                 /*******************************
   75                 *        DOCUMENTATION         *
   76                 *******************************/

Process source documentation

The pldoc module processes structured comments in Prolog source files. These comments can be saved to file. During development the documentation system can start a web-server to view the documentation of loaded sources through your browser. The server is defined in the file doc_http.pl and started through doc_server/1.

During development, a typical scenario is to first start the documentation server and start a browser at http://localhost:4000. Note that by default the web-pages allow for starting an editor only if the connection comes from localhost. See doc_server/2 to realise a different setup.

:- doc_server(4000).
:- [application].
author
- Jan Wielemaker
See also
- doc_server/1, doc_server/2, doc_collect/1. */
 doc_collect(+Bool) is det
Switch collecting comments true/false. This autoload predicate can be used to force loading the pldoc library. In a typical development setup loading pldoc is normally triggered using doc_server/1.
 pldoc_loading is semidet
True if we are loading the PlDoc libraries. Required internally to avoid undefined predicates while re-loading and document itself.
 tag_order(?Tag, ?Order) is semidet
Hook that allows for defining additional tags.
See also
- pldoc_wiki:tag_order/2 for the default definition.
  121                 /*******************************
  122                 *           FINISH UP          *
  123                 *******************************/
  124
  125finish :-
  126    (   retract(pldoc_loading)
  127    ->  process_stored_comments
  128    ;   true
  129    ).
  130
  131:- initialization(finish).