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%%%% Graphing support.
%%%% This file is part of LilyPond, the GNU music typesetter.
%%%%
%%%% Copyright (C) 2007--2020 Joe Neeman <[email protected]>
%%%%
%%%% LilyPond 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 of the License, or
%%%% (at your option) any later version.
%%%%
%%%% LilyPond 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 LilyPond. If not, see <http://www.gnu.org/licenses/>.
\version "2.19.22"
#(use-modules (scm graphviz))
#(use-modules (ice-9 regex))
#(define last-grob-action '())
#(define sym-blacklist '())
#(define sym-whitelist '())
#(define file-line-blacklist '())
#(define file-line-whitelist '())
#(define grob-blacklist '())
#(define grob-whitelist '())
#(define (blacklist-symbol sym)
(set! sym-blacklist (cons sym sym-blacklist)))
#(define (whitelist-symbol sym)
(set! sym-whitelist (cons sym sym-whitelist)))
#(define (whitelist-grob sym)
(set! grob-whitelist (cons sym grob-whitelist)))
#(define graph (make-empty-graph (ly:parser-output-name)))
% an event is relevant if
% (it is on some whitelist or all whitelists are empty)
% and
% (it isn't on any blacklist)
#(define (relevant? grob file line prop)
(let ((file-line `(,file . ,line)))
(and
(or
(= 0 (length file-line-whitelist) (length sym-whitelist) (length grob-whitelist))
(memq prop sym-whitelist)
(memq (grob::name grob) grob-whitelist)
(member file-line file-line-whitelist))
(and
(not (memq prop sym-blacklist))
(not (memq (grob::name grob) grob-blacklist))
(not (member file-line file-line-blacklist))))))
#(define (grob-event-node grob label cluster)
(let ((node-id (add-node graph label cluster))
(prev (assv grob last-grob-action)))
(if (pair? prev)
(add-edge graph (cdr prev) node-id))
(set! last-grob-action (assv-set! last-grob-action grob node-id))))
#(define (truncate-value val)
(let ((val-str (format #f "~a" val)))
(string-take val-str (min 50 (string-length val-str)))))
#(define (grob-mod grob file line func prop val)
(let* ((val-str (truncate-value val))
(label (format #f "~a\\n~a:~a\\n~a <- ~a" (grob::name grob) file line prop val-str))
;; to keep escaped "\"" we need to transform it to "\\\""
;; otherwise the final pdf-creation will break
(escaped-label
(regexp-substitute/global #f "\"" label 'pre "\\\"" 'post)))
(if (relevant? grob file line prop)
(grob-event-node grob escaped-label file))))
#(define (grob-cache grob prop callback value)
(let* ((val-str (truncate-value value))
(label (format #f "caching ~a.~a\\n~a -> ~a" (grob::name grob) prop callback value)))
(if (relevant? grob #f #f prop)
(grob-event-node grob label #f))))
#(define (grob-create grob file line func)
(let ((label (format #f "~a\\n~a:~a" (grob::name grob) file line)))
(grob-event-node grob label file)))
#(ly:set-grob-modification-callback grob-mod)
#(ly:set-property-cache-callback grob-cache)
%#(ly:set-grob-creation-callback grob-create)
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