1 ;;; define-music-display-methods.scm -- data for displaying music
2 ;;; expressions using LilyPond notation.
4 ;;; Copyright (C) 2005--2015 Nicolas Sceaux <nicolas.sceaux@free.fr>
7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
9 ;;; Display method implementation
12 (define-module (scm display-lily))
17 (define (scheme-expr->lily-string scm-arg)
18 (cond ((or (number? scm-arg)
21 (format #f "~s" scm-arg))
22 ((or (symbol? scm-arg)
24 (format #f "'~s" scm-arg))
27 (or (procedure-name scm-arg)
28 (with-output-to-string
30 (pretty-print (procedure-source scm-arg)))))))
33 (with-output-to-string
35 (display-scheme-music scm-arg)))))))
40 (define-public (markup->lily-string markup-expr)
41 "Return a string describing, in LilyPond syntax, the given markup
43 (define (proc->command proc)
44 (let ((cmd-markup (symbol->string (procedure-name proc))))
45 (substring cmd-markup 0 (- (string-length cmd-markup)
46 (string-length "-markup")))))
47 (define (arg->string arg)
50 ((markup? arg) ;; a markup
51 (markup->lily-string-aux arg))
52 ((and (pair? arg) (every markup? arg)) ;; a markup list
53 (format #f "{~{ ~a~}}" (map-in-order markup->lily-string-aux arg)))
54 (else ;; a scheme argument
55 (format #f "#~a" (scheme-expr->lily-string arg)))))
56 (define (markup->lily-string-aux expr)
59 (let ((cmd (car expr))
61 (if (eqv? cmd simple-markup) ;; a simple markup
62 (format #f "~s" (car args))
63 (format #f "\\~a~{ ~a~}"
65 (map-in-order arg->string args))))))
66 (cond ((string? markup-expr)
67 (format #f "~s" markup-expr))
68 ((eqv? (car markup-expr) simple-markup)
69 (format #f "~s" (second markup-expr)))
71 (format #f "\\markup ~a"
72 (markup->lily-string-aux markup-expr)))))
78 ;; It is a pity that there is no rassoc in Scheme.
79 (define* (rassoc item alist #:optional (test equal?))
80 (do ((alist alist (cdr alist))
82 ((or result (null? alist)) result)
83 (if (and (car alist) (test item (cdar alist)))
84 (set! result (car alist)))))
86 (define-public (note-name->lily-string ly-pitch parser)
87 ;; here we define a custom pitch= function, since we do not want to
88 ;; test whether octaves are also equal. (otherwise, we would be using equal?)
89 (define (pitch= pitch1 pitch2)
90 (and (= (ly:pitch-notename pitch1) (ly:pitch-notename pitch2))
91 (= (ly:pitch-alteration pitch1) (ly:pitch-alteration pitch2))))
92 (let ((result (rassoc ly-pitch (ly:parser-lookup parser 'pitchnames) pitch=)))
97 (define-public (octave->lily-string pitch)
98 (let ((octave (ly:pitch-octave pitch)))
100 (make-string (1+ octave) #\'))
102 (make-string (1- (* -1 octave)) #\,))
108 (define*-public (duration->lily-string ly-duration #:key
110 (time-scale (*time-scale*)))
111 (let ((log2 (ly:duration-log ly-duration))
112 (dots (ly:duration-dot-count ly-duration))
113 (scale (ly:duration-scale ly-duration)))
114 (if (or force-duration (not (*omit-duration*)))
115 (string-append (case log2
119 (else (number->string (expt 2 log2))))
120 (make-string dots #\.)
121 (let ((end-scale (/ scale time-scale)))
122 (if (= end-scale 1) ""
123 (format #f "*~a" end-scale))))
130 (define (post-event? m)
131 (music-is-of-type? m 'post-event))
133 (define* (event-direction->lily-string event #:optional (required #t))
134 (let ((direction (ly:music-property event 'direction)))
135 (cond ((or (not direction) (null? direction) (= CENTER direction))
136 (if required "-" ""))
137 ((= UP direction) "^")
138 ((= DOWN direction) "_")
141 (define-macro (define-post-event-display-method type vars direction-required str)
142 `(define-display-method ,type ,vars
144 (event-direction->lily-string ,(car vars) ,direction-required)
147 (define-macro (define-span-event-display-method type vars direction-required str-start str-stop)
148 `(define-display-method ,type ,vars
150 (event-direction->lily-string ,(car vars) ,direction-required)
151 (if (= START (ly:music-property ,(car vars) 'span-direction))
155 (define-display-method HyphenEvent (event parser)
157 (define-display-method ExtenderEvent (event parser)
159 (define-display-method TieEvent (event parser)
161 (define-display-method BeamForbidEvent (event parser)
163 (define-display-method StringNumberEvent (event parser)
164 (format #f "\\~a" (ly:music-property event 'string-number)))
167 (define-display-method TremoloEvent (event parser)
168 (let ((tremolo-type (ly:music-property event 'tremolo-type 8)))
169 (format #f ":~a" tremolo-type)))
171 (define-display-method ArticulationEvent (event parser) #t
172 (let* ((articulation (ly:music-property event 'articulation-type))
174 (case (string->symbol articulation)
178 ((staccatissimo) "!")
183 (format #f "~a~:[\\~;~]~a"
184 (event-direction->lily-string event shorthand)
186 (or shorthand articulation))))
188 (define-post-event-display-method FingeringEvent (event parser) #t
189 (ly:music-property event 'digit))
191 (define-post-event-display-method TextScriptEvent (event parser) #t
192 (markup->lily-string (ly:music-property event 'text)))
194 (define-post-event-display-method MultiMeasureTextEvent (event parser) #t
195 (markup->lily-string (ly:music-property event 'text)))
197 (define-post-event-display-method BendAfterEvent (event parser) #f
198 (format #f "\\bendAfter #~a " (ly:music-property event 'delta-step)))
200 (define-post-event-display-method HarmonicEvent (event parser) #f "\\harmonic")
201 (define-post-event-display-method GlissandoEvent (event parser) #f "\\glissando")
202 (define-post-event-display-method ArpeggioEvent (event parser) #f "\\arpeggio")
203 (define-post-event-display-method AbsoluteDynamicEvent (event parser) #f
204 (format #f "\\~a" (ly:music-property event 'text)))
206 (define-post-event-display-method StrokeFingerEvent (event parser) #f
207 (format #f "\\rightHandFinger #~a " (ly:music-property event 'digit)))
209 (define-span-event-display-method BeamEvent (event parser) #f "[" "]")
210 (define-span-event-display-method SlurEvent (event parser) #f "(" ")")
211 (define-span-event-display-method CrescendoEvent (event parser) #f "\\<" "\\!")
212 (define-span-event-display-method DecrescendoEvent (event parser) #f "\\>" "\\!")
213 (define-span-event-display-method EpisemaEvent (event parser) #f "\\episemInitium" "\\episemFinis")
214 (define-span-event-display-method PhrasingSlurEvent (event parser) #f "\\(" "\\)")
215 (define-span-event-display-method SustainEvent (event parser) #f "\\sustainOn" "\\sustainOff")
216 (define-span-event-display-method SostenutoEvent (event parser) #f "\\sostenutoOn" "\\sostenutoOff")
217 (define-span-event-display-method TextSpanEvent (event parser) #f "\\startTextSpan" "\\stopTextSpan")
218 (define-span-event-display-method TrillSpanEvent (event parser) #f "\\startTrillSpan" "\\stopTrillSpan")
219 (define-span-event-display-method StaffSpanEvent (event parser) #f "\\startStaff" "\\stopStaff")
220 (define-span-event-display-method NoteGroupingEvent (event parser) #f "\\startGroup" "\\stopGroup")
221 (define-span-event-display-method UnaCordaEvent (event parser) #f "\\unaCorda" "\\treCorde")
227 (define-display-method GraceMusic (expr parser)
228 (format #f "\\grace ~a"
229 (music->lily-string (ly:music-property expr 'element) parser)))
231 ;; \acciaccatura \appoggiatura \grace
232 ;; TODO: it would be better to compare ?start and ?stop
233 ;; with startAppoggiaturaMusic and stopAppoggiaturaMusic,
234 ;; using a custom music equality predicate.
235 (define-extra-display-method GraceMusic (expr parser)
236 "Display method for appoggiatura."
237 (with-music-match (expr (music
244 ;; we check whether ?start and ?stop look like
245 ;; startAppoggiaturaMusic stopAppoggiaturaMusic
246 (and (with-music-match (?start (music
253 span-direction START))))))
255 (with-music-match (?stop (music
262 span-direction STOP))))))
263 (format #f "\\appoggiatura ~a" (music->lily-string ?music parser))))))
266 (define-extra-display-method GraceMusic (expr parser)
267 "Display method for acciaccatura."
268 (with-music-match (expr (music
275 ;; we check whether ?start and ?stop look like
276 ;; startAcciaccaturaMusic stopAcciaccaturaMusic
277 (and (with-music-match (?start (music
284 span-direction START)))
289 grob-property-path '(stroke-style)
293 (with-music-match (?stop (music
299 grob-property-path '(stroke-style)
307 span-direction STOP))))))
308 (format #f "\\acciaccatura ~a" (music->lily-string ?music parser))))))
310 (define-extra-display-method GraceMusic (expr parser)
311 "Display method for grace."
312 (with-music-match (expr (music
319 ;; we check whether ?start and ?stop look like
320 ;; startGraceMusic stopGraceMusic
321 (and (null? (ly:music-property ?start 'elements))
322 (null? (ly:music-property ?stop 'elements))
323 (format #f "\\grace ~a" (music->lily-string ?music parser)))))
329 (define-display-method SequentialMusic (seq parser)
330 (let ((force-line-break (and (*force-line-break*)
332 (> (length (ly:music-property seq 'elements))
333 (*max-element-number-before-break*))))
334 (elements (ly:music-property seq 'elements))
335 (chord? (make-music-type-predicate 'EventChord))
336 (note-or-chord? (make-music-type-predicate 'EventChord 'NoteEvent
337 'LyricEvent 'RestEvent
339 (cluster? (make-music-type-predicate 'ClusterNoteEvent))
340 (note? (make-music-type-predicate 'NoteEvent)))
341 (format #f "~a~a{~v%~v_~{~a~^ ~}~v%~v_}"
345 (any cluster? (ly:music-property e 'elements)))))
349 (if (*explicit-mode*)
350 ;; if the sequence contains EventChord which contains figures ==> figuremode
351 ;; if the sequence contains EventChord which contains lyrics ==> lyricmode
352 ;; if the sequence contains EventChord which contains drum notes ==> drummode
353 (cond ((any (lambda (chord)
354 (any (make-music-type-predicate 'BassFigureEvent)
355 (ly:music-property chord 'elements)))
356 (filter chord? elements))
358 ((any (lambda (chord)
359 (any (make-music-type-predicate 'LyricEvent)
361 (ly:music-property chord 'elements))))
362 (filter note-or-chord? elements))
364 ((any (lambda (chord)
367 (not (null? (ly:music-property event 'drum-type)))))
369 (ly:music-property chord 'elements))))
370 (filter note-or-chord? elements))
372 (else ;; TODO: other modes?
375 (if force-line-break 1 0)
376 (if force-line-break (+ 2 (*indent*)) 1)
377 (parameterize ((*indent* (+ 2 (*indent*))))
378 (map-in-order (lambda (music)
379 (music->lily-string music parser))
381 (if force-line-break 1 0)
382 (if force-line-break (*indent*) 1))))
384 (define-display-method SimultaneousMusic (sim parser)
385 (parameterize ((*indent* (+ 3 (*indent*))))
386 (format #f "<< ~{~a ~}>>"
387 (map-in-order (lambda (music)
388 (music->lily-string music parser))
389 (ly:music-property sim 'elements)))))
391 (define-extra-display-method SimultaneousMusic (expr parser)
392 "If `sim' is an \afterGrace expression, return \"\\afterGrace ...\".
393 Otherwise, return #f."
394 ;; TODO: do something with afterGraceFraction?
395 (with-music-match (expr (music 'SimultaneousMusic
396 elements (?before-grace
397 (music 'SequentialMusic
398 elements ((music 'SkipMusic)
401 (format #f "\\afterGrace ~a ~a"
402 (music->lily-string ?before-grace parser)
403 (music->lily-string ?grace parser))))
409 (define-display-method EventChord (chord parser)
410 ;; event_chord : command_element
411 ;; | note_chord_element
413 ;; TODO : tagged post_events
414 ;; post_events : ( post_event | tagged_post_event )*
415 ;; tagged_post_event: '-' \tag embedded_scm post_event
417 (let* ((elements (append (ly:music-property chord 'elements)
418 (ly:music-property chord 'articulations)))
419 (chord-repeat (ly:music-property chord 'duration)))
422 (partition (lambda (m) (music-is-of-type? m 'rhythmic-event))
424 (lambda (chord-elements other-elements)
425 (cond ((pair? chord-elements)
426 ;; note_chord_element :
427 ;; '<' (notepitch | drumpitch)* '>" duration post_events
428 (let ((duration (duration->lily-string (ly:music-property
431 ;; Format duration first so that it does not appear on
433 (format #f "< ~{~a ~}>~a~:{~:[-~;~]~a~^ ~}"
434 (parameterize ((*omit-duration* #t))
437 (music->lily-string music parser))
440 (map-in-order (lambda (music)
443 (music->lily-string music parser)))
445 ((ly:duration? chord-repeat)
446 (let ((duration (duration->lily-string chord-repeat)))
447 (format #f "q~a~:{~:[-~;~]~a~^ ~}"
449 (map-in-order (lambda (music)
452 (music->lily-string music parser)))
455 ((and (= 1 (length other-elements))
456 (not (post-event? (car other-elements))))
457 (format #f (music->lily-string (car other-elements) parser)))
459 (format #f "< >~:{~:[-~;~]~a~^ ~}"
460 (map-in-order (lambda (music)
463 (music->lily-string music parser)))
464 other-elements))))))))
466 (define-display-method MultiMeasureRestMusic (mmrest parser)
467 (format #f "R~a~{~a~^ ~}"
468 (duration->lily-string (ly:music-property mmrest 'duration))
469 (map-in-order (lambda (music)
470 (music->lily-string music parser))
471 (ly:music-property mmrest 'articulations))))
473 (define-display-method SkipMusic (skip parser)
474 (format #f "\\skip ~a" (duration->lily-string (ly:music-property skip 'duration) #:force-duration #t)))
476 (define-display-method OttavaMusic (ottava parser)
477 (format #f "\\ottava #~a" (ly:music-property ottava 'ottava-number)))
480 ;;; Notes, rests, skips...
483 (define (simple-note->lily-string event parser)
484 (format #f "~a~a~a~a~a~a~:{~:[-~;~]~a~}" ; pitchname octave !? octave-check duration optional_rest articulations
485 (note-name->lily-string (ly:music-property event 'pitch) parser)
486 (octave->lily-string (ly:music-property event 'pitch))
487 (let ((forced (ly:music-property event 'force-accidental))
488 (cautionary (ly:music-property event 'cautionary)))
489 (cond ((and (not (null? forced))
491 (not (null? cautionary))
494 ((and (not (null? forced)) forced) "!")
496 (let ((octave-check (ly:music-property event 'absolute-octave)))
497 (if (not (null? octave-check))
498 (format #f "=~a" (cond ((>= octave-check 0)
499 (make-string (1+ octave-check) #\'))
501 (make-string (1- (* -1 octave-check)) #\,))
504 (duration->lily-string (ly:music-property event 'duration))
505 (if ((make-music-type-predicate 'RestEvent) event)
507 (map-in-order (lambda (event)
510 (music->lily-string event parser)))
511 (ly:music-property event 'articulations))))
513 (define-display-method NoteEvent (note parser)
514 (cond ((not (null? (ly:music-property note 'pitch))) ;; note
515 (simple-note->lily-string note parser))
516 ((not (null? (ly:music-property note 'drum-type))) ;; drum
517 (format #f "~a~a~{~a~}" (ly:music-property note 'drum-type)
518 (duration->lily-string (ly:music-property note 'duration))
519 (map-in-order (lambda (event)
520 (music->lily-string event parser))
521 (ly:music-property note 'articulations))))
524 (format #f "~a~{~a~}"
525 (duration->lily-string (ly:music-property note 'duration)
527 (map-in-order (lambda (event)
528 (music->lily-string event parser))
529 (ly:music-property note 'articulations))))))
531 (define-display-method ClusterNoteEvent (note parser)
532 (simple-note->lily-string note parser))
534 (define-display-method RestEvent (rest parser)
535 (if (not (null? (ly:music-property rest 'pitch)))
536 (simple-note->lily-string rest parser)
537 (format #f "r~a~{~a~}"
538 (duration->lily-string (ly:music-property rest 'duration))
539 (map-in-order (lambda (event)
540 (music->lily-string event parser))
541 (ly:music-property rest 'articulations)))))
543 (define-display-method MultiMeasureRestEvent (rest parser)
544 (string-append "R" (duration->lily-string (ly:music-property rest 'duration))))
546 (define-display-method SkipEvent (rest parser)
547 (format #f "s~a~{~a~}"
548 (duration->lily-string (ly:music-property rest 'duration))
549 (map-in-order (lambda (event)
550 (music->lily-string event parser))
551 (ly:music-property rest 'articulations))))
553 (define-display-method RepeatedChord (chord parser)
554 (music->lily-string (ly:music-property chord 'element) parser))
556 (define-display-method MarkEvent (mark parser)
557 (let ((label (ly:music-property mark 'label)))
560 (format #f "\\mark ~a" (markup->lily-string label)))))
562 (define-display-method KeyChangeEvent (key parser)
563 (let ((pitch-alist (ly:music-property key 'pitch-alist))
564 (tonic (ly:music-property key 'tonic)))
565 (if (or (null? pitch-alist)
568 (let ((c-pitch-alist (ly:transpose-key-alist pitch-alist
569 (ly:pitch-diff (ly:make-pitch 0 0 0) tonic))))
570 (format #f "\\key ~a \\~a~a"
571 (note-name->lily-string (ly:music-property key 'tonic) parser)
574 (equal? (ly:parser-lookup parser mode) c-pitch-alist))
575 (symbol->string mode)
577 '(major minor ionian locrian aeolian mixolydian lydian phrygian dorian))
578 (new-line->lily-string))))))
580 (define-display-method RelativeOctaveCheck (octave parser)
581 (let ((pitch (ly:music-property octave 'pitch)))
582 (format #f "\\octaveCheck ~a~a"
583 (note-name->lily-string pitch parser)
584 (octave->lily-string pitch))))
586 (define-display-method VoiceSeparator (sep parser)
589 (define-display-method LigatureEvent (ligature parser)
590 (if (= START (ly:music-property ligature 'span-direction))
594 (define-display-method BarCheck (check parser)
595 (format #f "|~a" (new-line->lily-string)))
597 (define-display-method PesOrFlexaEvent (expr parser)
600 (define-display-method BassFigureEvent (figure parser)
601 (let ((alteration (ly:music-property figure 'alteration))
602 (fig (ly:music-property figure 'figure))
603 (bracket-start (ly:music-property figure 'bracket-start))
604 (bracket-stop (ly:music-property figure 'bracket-stop)))
606 (format #f "~a~a~a~a"
607 (if (null? bracket-start) "" "[")
608 (cond ((null? fig) "_")
609 ((markup? fig) (second fig)) ;; fig: (<number-markup> "number")
611 (if (null? alteration)
614 ((= alteration DOUBLE-FLAT) "--")
615 ((= alteration FLAT) "-")
616 ((= alteration NATURAL) "!")
617 ((= alteration SHARP) "+")
618 ((= alteration DOUBLE-SHARP) "++")
620 (if (null? bracket-stop) "" "]"))))
622 (define-display-method LyricEvent (lyric parser)
623 (format #f "~a~{~a~^ ~}"
624 (let ((text (ly:music-property lyric 'text)))
625 (if (or (string? text)
626 (eqv? (first text) simple-markup))
627 ;; a string or a simple markup
628 (let ((string (if (string? text)
631 (if (string-match "(\"| |[0-9])" string)
632 ;; TODO check exactly in which cases double quotes should be used
633 (format #f "~s" string)
635 (markup->lily-string text)))
636 (map-in-order (lambda (m) (music->lily-string m parser))
637 (ly:music-property lyric 'articulations))))
639 (define-display-method BreathingEvent (event parser)
646 (define-display-method AutoChangeMusic (m parser)
647 (format #f "\\autochange ~a"
648 (music->lily-string (ly:music-property m 'element) parser)))
650 (define-display-method ContextChange (m parser)
651 (format #f "\\change ~a = \"~a\""
652 (ly:music-property m 'change-to-type)
653 (ly:music-property m 'change-to-id)))
657 (define-display-method TimeScaledMusic (times parser)
658 (let* ((num (ly:music-property times 'numerator))
659 (den (ly:music-property times 'denominator))
660 (span (ly:music-property times 'duration #f))
661 ;; need to format before changing time scale
663 (and span (duration->lily-string span #:force-duration #t)))
665 (time-scale (*time-scale*)))
667 (parameterize ((*force-line-break* #f)
668 (*time-scale* (* time-scale scale)))
669 (format #f "\\tuplet ~a/~a ~@[~a ~]~a"
673 (music->lily-string (ly:music-property times 'element) parser)))))
676 (define-display-method RelativeOctaveMusic (m parser)
677 (music->lily-string (ly:music-property m 'element) parser))
679 (define-display-method TransposedMusic (m parser)
680 (music->lily-string (ly:music-property m 'element) parser))
686 (define-display-method AlternativeEvent (alternative parser) "")
688 (define (repeat->lily-string expr repeat-type parser)
689 (let* ((main (music->lily-string (ly:music-property expr 'element) parser)))
690 (format #f "\\repeat ~a ~a ~a ~a"
692 (ly:music-property expr 'repeat-count)
694 (let ((alternatives (ly:music-property expr 'elements)))
695 (if (null? alternatives)
697 (format #f "\\alternative { ~{~a ~}}"
698 (map-in-order (lambda (music)
699 (music->lily-string music parser))
702 (define-display-method VoltaRepeatedMusic (expr parser)
703 (repeat->lily-string expr "volta" parser))
705 (define-display-method UnfoldedRepeatedMusic (expr parser)
706 (repeat->lily-string expr "unfold" parser))
708 (define-display-method PercentRepeatedMusic (expr parser)
709 (repeat->lily-string expr "percent" parser))
711 (define-display-method TremoloRepeatedMusic (expr parser)
712 (repeat->lily-string expr "tremolo" parser))
718 (define-display-method ContextSpeccedMusic (expr parser)
719 (let ((id (ly:music-property expr 'context-id))
720 (create-new (ly:music-property expr 'create-new))
721 (music (ly:music-property expr 'element))
722 (operations (ly:music-property expr 'property-operations))
723 (ctype (ly:music-property expr 'context-type)))
724 (format #f "~a ~a~a~a ~a"
725 (if (and (not (null? create-new)) create-new)
731 (format #f " = ~s" id))
732 (if (null? operations)
734 (format #f " \\with {~{~a~}~%~v_}"
735 (parameterize ((*indent* (+ (*indent*) 2)))
737 (format #f "~%~v_\\~a ~s"
743 (parameterize ((*current-context* ctype))
744 (music->lily-string music parser)))))
746 ;; special cases: \figures \lyrics \drums
747 (define-extra-display-method ContextSpeccedMusic (expr parser)
748 (with-music-match (expr (music 'ContextSpeccedMusic
750 property-operations ?op
751 context-type ?context-type
754 (parameterize ((*explicit-mode* #f))
757 (format #f "\\figures ~a" (music->lily-string ?sequence parser)))
759 (format #f "\\lyrics ~a" (music->lily-string ?sequence parser)))
761 (format #f "\\drums ~a" (music->lily-string ?sequence parser)))
766 ;;; Context properties
768 (define-extra-display-method ContextSpeccedMusic (expr parser)
769 (let ((element (ly:music-property expr 'element))
770 (property-tuning? (make-music-type-predicate 'PropertySet
774 (sequence? (make-music-type-predicate 'SequentialMusic)))
775 (if (and (ly:music? element)
776 (or (property-tuning? element)
777 (and (sequence? element)
778 (every property-tuning? (ly:music-property element 'elements)))))
779 (parameterize ((*current-context* (ly:music-property expr 'context-type)))
780 (music->lily-string element parser))
783 (define-public (value->lily-string arg parser)
784 (cond ((ly:music? arg)
785 (music->lily-string arg parser))
787 (format #f "#~s" arg))
789 (markup->lily-string arg))
791 (format #f "##{ ~a #}" (duration->lily-string arg #:force-duration #t)))
794 (note-name->lily-string arg parser)
795 (octave->lily-string arg)))
797 (format #f "#~a" (scheme-expr->lily-string arg)))))
799 (define-display-method PropertySet (expr parser)
800 (let ((property (ly:music-property expr 'symbol))
801 (value (ly:music-property expr 'value))
802 (once (ly:music-property expr 'once)))
803 (format #f "~a\\set ~a~a = ~a~a"
804 (if (and (not (null? once)))
807 (if (eqv? (*current-context*) 'Bottom)
809 (format #f "~a . " (*current-context*)))
811 (value->lily-string value parser)
812 (new-line->lily-string))))
814 (define-display-method PropertyUnset (expr parser)
815 (format #f "\\unset ~a~a~a"
816 (if (eqv? (*current-context*) 'Bottom)
818 (format #f "~a . " (*current-context*)))
819 (ly:music-property expr 'symbol)
820 (new-line->lily-string)))
822 ;;; Layout properties
824 (define-display-method OverrideProperty (expr parser)
825 (let* ((symbol (ly:music-property expr 'symbol))
826 (properties (ly:music-property expr 'grob-property-path
827 (list (ly:music-property expr 'grob-property))))
828 (value (ly:music-property expr 'grob-value))
829 (once (ly:music-property expr 'once)))
831 (format #f "~a\\override ~{~a~^.~} = ~a~a"
836 (if (eqv? (*current-context*) 'Bottom)
837 (cons symbol properties)
838 (cons* (*current-context*) symbol properties))
839 (value->lily-string value parser)
840 (new-line->lily-string))))
842 (define-display-method RevertProperty (expr parser)
843 (let* ((symbol (ly:music-property expr 'symbol))
844 (properties (ly:music-property expr 'grob-property-path
845 (list (ly:music-property expr 'grob-property)))))
846 (format #f "\\revert ~{~a~^.~}~a"
847 (if (eqv? (*current-context*) 'Bottom)
848 (cons symbol properties)
849 (cons* (*current-context*) symbol properties))
850 (new-line->lily-string))))
852 (define-display-method TimeSignatureMusic (expr parser)
853 (let* ((num (ly:music-property expr 'numerator))
854 (den (ly:music-property expr 'denominator))
855 (structure (ly:music-property expr 'beat-structure)))
856 (if (null? structure)
860 (new-line->lily-string))
862 "\\time #'~a ~a/~a~a"
864 (new-line->lily-string)))))
866 ;;; \melisma and \melismaEnd
867 (define-extra-display-method ContextSpeccedMusic (expr parser)
868 "If expr is a melisma, return \"\\melisma\", otherwise, return #f."
869 (with-music-match (expr (music 'ContextSpeccedMusic
870 element (music 'PropertySet
872 symbol 'melismaBusy)))
875 (define-extra-display-method ContextSpeccedMusic (expr parser)
876 "If expr is a melisma end, return \"\\melismaEnd\", otherwise, return #f."
877 (with-music-match (expr (music 'ContextSpeccedMusic
878 element (music 'PropertyUnset
879 symbol 'melismaBusy)))
883 (define-extra-display-method SequentialMusic (expr parser)
884 (with-music-match (expr (music 'SequentialMusic
885 elements ((music 'TempoChangeEvent
888 metronome-count ?count)
889 (music 'ContextSpeccedMusic
890 element (music 'PropertySet
891 symbol 'tempoWholesPerMinute)))))
892 (format #f "\\tempo ~{~a~a~}~a = ~a~a"
894 (list (markup->lily-string ?text) " ")
896 (duration->lily-string ?unit #:force-duration #t)
898 (format #f "~a - ~a" (car ?count) (cdr ?count))
900 (new-line->lily-string))))
902 (define-display-method TempoChangeEvent (expr parser)
903 (let ((text (ly:music-property expr 'text)))
904 (format #f "\\tempo ~a~a"
905 (markup->lily-string text)
906 (new-line->lily-string))))
909 (define clef-name-alist #f)
910 (define-public (memoize-clef-names clefs)
911 "Initialize @code{clef-name-alist}, if not already set."
912 (if (not clef-name-alist)
913 (set! clef-name-alist
914 (map (lambda (name+vals)
915 (cons (cdr name+vals)
919 (define-extra-display-method ContextSpeccedMusic (expr parser)
920 "If @var{expr} is a clef change, return \"\\clef ...\".
921 Otherwise, return @code{#f}."
922 (with-music-match (expr (music 'ContextSpeccedMusic
924 element (music 'SequentialMusic
925 elements ((music 'PropertySet
929 symbol 'middleCClefPosition)
932 symbol 'clefPosition)
934 value ?clef-transposition
935 symbol 'clefTransposition)
937 value ?clef-transposition-style
938 symbol 'clefTranspositionStyle)
940 procedure ly:set-middle-C!)))))
941 (let ((clef-name (assoc-get (list ?clef-glyph ?clef-position 0)
944 (format #f "\\clef \"~a~?\"~a"
946 (case ?clef-transposition-style
947 ((parenthesized) "~a(~a)")
948 ((bracketed) "~a[~a]")
950 (cond ((zero? ?clef-transposition)
952 ((positive? ?clef-transposition)
953 (list "^" (1+ ?clef-transposition)))
954 (else (list "_" (- 1 ?clef-transposition))))
955 (new-line->lily-string))))))
958 (define-extra-display-method ContextSpeccedMusic (expr parser)
959 "If `expr' is a bar, return \"\\bar ...\".
960 Otherwise, return #f."
961 (with-music-match (expr (music 'ContextSpeccedMusic
963 element (music 'PropertySet
966 (format #f "\\bar \"~a\"~a" ?bar-type (new-line->lily-string))))
969 (define-extra-display-method ContextSpeccedMusic (expr parser)
970 "If `expr' is a partial measure, return \"\\partial ...\".
971 Otherwise, return #f."
972 (with-music-match (expr (music
979 duration ?duration))))
982 (format #f "\\partial ~a"
983 (duration->lily-string ?duration #:force-duration #t)))))
988 (define-display-method ApplyOutputEvent (applyoutput parser)
989 (let ((proc (ly:music-property applyoutput 'procedure))
990 (ctx (ly:music-property applyoutput 'context-type)))
991 (format #f "\\applyOutput #'~a #~a"
993 (or (procedure-name proc)
994 (with-output-to-string
996 (pretty-print (procedure-source proc))))))))
998 (define-display-method ApplyContext (applycontext parser)
999 (let ((proc (ly:music-property applycontext 'procedure)))
1000 (format #f "\\applyContext #~a"
1001 (or (procedure-name proc)
1002 (with-output-to-string
1004 (pretty-print (procedure-source proc))))))))
1007 (define-display-method PartCombineMusic (expr parser)
1008 (format #f "\\partcombine ~{~a ~}"
1009 (map-in-order (lambda (music)
1010 (music->lily-string music parser))
1011 (ly:music-property expr 'elements))))
1013 (define-extra-display-method PartCombineMusic (expr parser)
1014 (with-music-match (expr (music 'PartCombineMusic
1015 elements ((music 'UnrelativableMusic
1016 element (music 'ContextSpeccedMusic
1019 element ?sequence1))
1020 (music 'UnrelativableMusic
1021 element (music 'ContextSpeccedMusic
1024 element ?sequence2)))))
1025 (format #f "\\partcombine ~a~a~a"
1026 (music->lily-string ?sequence1 parser)
1027 (new-line->lily-string)
1028 (music->lily-string ?sequence2 parser))))
1030 (define-display-method UnrelativableMusic (expr parser)
1031 (music->lily-string (ly:music-property expr 'element) parser))
1034 (define-display-method QuoteMusic (expr parser)
1035 (or (with-music-match (expr (music
1037 quoted-voice-direction ?quoted-voice-direction
1038 quoted-music-name ?quoted-music-name
1039 quoted-context-id "cue"
1040 quoted-context-type 'CueVoice
1042 (format #f "\\cueDuring #~s #~a ~a"
1044 ?quoted-voice-direction
1045 (music->lily-string ?music parser)))
1046 (format #f "\\quoteDuring #~s ~a"
1047 (ly:music-property expr 'quoted-music-name)
1048 (music->lily-string (ly:music-property expr 'element) parser))))
1053 (define-display-method LineBreakEvent (expr parser)
1054 (if (null? (ly:music-property expr 'break-permission))
1058 (define-display-method PageBreakEvent (expr parser)
1059 (if (null? (ly:music-property expr 'break-permission))
1063 (define-display-method PageTurnEvent (expr parser)
1064 (if (null? (ly:music-property expr 'break-permission))
1068 (define-extra-display-method EventChord (expr parser)
1069 (with-music-match (expr (music 'EventChord
1070 elements ((music 'LineBreakEvent
1071 break-permission 'force)
1072 (music 'PageBreakEvent
1073 break-permission 'force))))
1076 (define-extra-display-method EventChord (expr parser)
1077 (with-music-match (expr (music 'EventChord
1078 elements ((music 'LineBreakEvent
1079 break-permission 'force)
1080 (music 'PageBreakEvent
1081 break-permission 'force)
1082 (music 'PageTurnEvent
1083 break-permission 'force))))
1091 (define-display-method LyricCombineMusic (expr parser)
1092 (format #f "\\lyricsto ~s ~a"
1093 (ly:music-property expr 'associated-context)
1094 (parameterize ((*explicit-mode* #f)
1095 (*omit-duration* #t))
1096 (music->lily-string (ly:music-property expr 'element) parser))))
1099 (define-extra-display-method SimultaneousMusic (expr parser)
1100 (with-music-match (expr (music 'SimultaneousMusic
1101 elements ((music 'ContextSpeccedMusic
1104 element ?note-sequence)
1105 (music 'ContextSpeccedMusic
1106 context-type 'Lyrics
1108 element (music 'LyricCombineMusic
1109 associated-context ?associated-id
1110 element ?lyric-sequence)))))
1111 (if (string=? ?id ?associated-id)
1112 (format #f "~a~a \\addlyrics ~a"
1113 (music->lily-string ?note-sequence parser)
1114 (new-line->lily-string)
1115 (parameterize ((*explicit-mode* #f)
1116 (*omit-duration* #t))
1117 (music->lily-string ?lyric-sequence parser)))
1120 ;; Silence internal event sent at end of each lyrics block
1121 (define-display-method CompletizeExtenderEvent (expr parser)