1 ;;; define-music-display-methods.scm -- data for displaying music
2 ;;; expressions using LilyPond notation.
4 ;;; Copyright (C) 2005--2012 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 (prev-duration (*previous-duration*))
109 (force-duration (*force-duration*))
110 (time-factor-numerator (*time-factor-numerator*))
111 (time-factor-denominator (*time-factor-denominator*))
113 (if remember (*previous-duration* ly-duration))
114 (let ((log2 (ly:duration-log ly-duration))
115 (dots (ly:duration-dot-count ly-duration))
116 (num+den (ly:duration-factor ly-duration)))
117 (if (or force-duration (not prev-duration) (not (equal? ly-duration prev-duration)))
118 (string-append (case log2
122 (else (number->string (expt 2 log2))))
123 (make-string dots #\.)
124 (let ((num? (not (or (= 1 (car num+den))
125 (and time-factor-numerator
126 (= (car num+den) time-factor-numerator)))))
127 (den? (not (or (= 1 (cdr num+den))
128 (and time-factor-denominator
129 (= (cdr num+den) time-factor-denominator))))))
131 (format #f "*~a/~a" (car num+den) (cdr num+den)))
133 (format #f "*~a" (car num+den)))
141 (define (post-event? m)
142 (music-is-of-type? m 'post-event))
144 (define* (event-direction->lily-string event #:optional (required #t))
145 (let ((direction (ly:music-property event 'direction)))
146 (cond ((or (not direction) (null? direction) (= CENTER direction))
147 (if required "-" ""))
148 ((= UP direction) "^")
149 ((= DOWN direction) "_")
152 (define-macro (define-post-event-display-method type vars direction-required str)
153 `(define-display-method ,type ,vars
155 (event-direction->lily-string ,(car vars) ,direction-required)
158 (define-macro (define-span-event-display-method type vars direction-required str-start str-stop)
159 `(define-display-method ,type ,vars
161 (event-direction->lily-string ,(car vars) ,direction-required)
162 (if (= START (ly:music-property ,(car vars) 'span-direction))
166 (define-display-method HyphenEvent (event parser)
168 (define-display-method ExtenderEvent (event parser)
170 (define-display-method TieEvent (event parser)
172 (define-display-method BeamForbidEvent (event parser)
174 (define-display-method StringNumberEvent (event parser)
175 (format #f "\\~a" (ly:music-property event 'string-number)))
178 (define-display-method TremoloEvent (event parser)
179 (let ((tremolo-type (ly:music-property event 'tremolo-type)))
180 (format #f ":~a" (if (= 0 tremolo-type)
184 (define-display-method ArticulationEvent (event parser) #t
185 (let* ((articulation (ly:music-property event 'articulation-type))
187 (case (string->symbol articulation)
191 ((staccatissimo) "|")
196 (format #f "~a~:[\\~;~]~a"
197 (event-direction->lily-string event shorthand)
199 (or shorthand articulation))))
201 (define-post-event-display-method FingeringEvent (event parser) #t
202 (ly:music-property event 'digit))
204 (define-post-event-display-method TextScriptEvent (event parser) #t
205 (markup->lily-string (ly:music-property event 'text)))
207 (define-post-event-display-method MultiMeasureTextEvent (event parser) #t
208 (markup->lily-string (ly:music-property event 'text)))
210 (define-post-event-display-method BendAfterEvent (event parser) #f
211 (format #f "\\bendAfter #~a" (ly:music-property event 'delta-step)))
213 (define-post-event-display-method HarmonicEvent (event parser) #f "\\harmonic")
214 (define-post-event-display-method GlissandoEvent (event parser) #f "\\glissando")
215 (define-post-event-display-method ArpeggioEvent (event parser) #f "\\arpeggio")
216 (define-post-event-display-method AbsoluteDynamicEvent (event parser) #f
217 (format #f "\\~a" (ly:music-property event 'text)))
219 (define-post-event-display-method StrokeFingerEvent (event parser) #f
220 (format #f "\\rightHandFinger #~a" (ly:music-property event 'digit)))
222 (define-span-event-display-method BeamEvent (event parser) #f "[" "]")
223 (define-span-event-display-method SlurEvent (event parser) #f "(" ")")
224 (define-span-event-display-method CrescendoEvent (event parser) #f "\\<" "\\!")
225 (define-span-event-display-method DecrescendoEvent (event parser) #f "\\>" "\\!")
226 (define-span-event-display-method EpisemaEvent (event parser) #f "\\episemInitium" "\\episemFinis")
227 (define-span-event-display-method PhrasingSlurEvent (event parser) #f "\\(" "\\)")
228 (define-span-event-display-method SustainEvent (event parser) #f "\\sustainOn" "\\sustainOff")
229 (define-span-event-display-method SostenutoEvent (event parser) #f "\\sostenutoOn" "\\sostenutoOff")
230 (define-span-event-display-method TextSpanEvent (event parser) #f "\\startTextSpan" "\\stopTextSpan")
231 (define-span-event-display-method TrillSpanEvent (event parser) #f "\\startTrillSpan" "\\stopTrillSpan")
232 (define-span-event-display-method StaffSpanEvent (event parser) #f "\\startStaff" "\\stopStaff")
233 (define-span-event-display-method NoteGroupingEvent (event parser) #f "\\startGroup" "\\stopGroup")
234 (define-span-event-display-method UnaCordaEvent (event parser) #f "\\unaCorda" "\\treCorde")
240 (define-display-method GraceMusic (expr parser)
241 (format #f "\\grace ~a"
242 (music->lily-string (ly:music-property expr 'element) parser)))
244 ;; \acciaccatura \appoggiatura \grace
245 ;; TODO: it would be better to compare ?start and ?stop
246 ;; with startAppoggiaturaMusic and stopAppoggiaturaMusic,
247 ;; using a custom music equality predicate.
248 (define-extra-display-method GraceMusic (expr parser)
249 "Display method for appoggiatura."
250 (with-music-match (expr (music
257 ;; we check whether ?start and ?stop look like
258 ;; startAppoggiaturaMusic stopAppoggiaturaMusic
259 (and (with-music-match (?start (music
263 duration (ly:make-duration 0 0 0 1)
267 span-direction START))))))
269 (with-music-match (?stop (music
273 duration (ly:make-duration 0 0 0 1)
277 span-direction STOP))))))
278 (format #f "\\appoggiatura ~a" (music->lily-string ?music parser))))))
281 (define-extra-display-method GraceMusic (expr parser)
282 "Display method for acciaccatura."
283 (with-music-match (expr (music
290 ;; we check whether ?start and ?stop look like
291 ;; startAcciaccaturaMusic stopAcciaccaturaMusic
292 (and (with-music-match (?start (music
296 duration (ly:make-duration 0 0 0 1)
300 span-direction START)))
305 grob-property-path '(stroke-style)
309 (with-music-match (?stop (music
315 grob-property-path '(stroke-style)
320 duration (ly:make-duration 0 0 0 1)
324 span-direction STOP))))))
325 (format #f "\\acciaccatura ~a" (music->lily-string ?music parser))))))
327 (define-extra-display-method GraceMusic (expr parser)
328 "Display method for grace."
329 (with-music-match (expr (music
336 ;; we check whether ?start and ?stop look like
337 ;; startGraceMusic stopGraceMusic
338 (and (null? (ly:music-property ?start 'elements))
339 (null? (ly:music-property ?stop 'elements))
340 (format #f "\\grace ~a" (music->lily-string ?music parser)))))
346 (define-display-method SequentialMusic (seq parser)
347 (let ((force-line-break (and (*force-line-break*)
349 (> (length (ly:music-property seq 'elements))
350 (*max-element-number-before-break*))))
351 (elements (ly:music-property seq 'elements))
352 (chord? (make-music-type-predicate 'EventChord))
353 (note-or-chord? (make-music-type-predicate 'EventChord 'NoteEvent
354 'LyricEvent 'RestEvent
356 (cluster? (make-music-type-predicate 'ClusterNoteEvent))
357 (note? (make-music-type-predicate 'NoteEvent)))
358 (format #f "~a~a{~v%~v_~{~a~^ ~}~v%~v_}"
362 (any cluster? (ly:music-property e 'elements)))))
366 (if (*explicit-mode*)
367 ;; if the sequence contains EventChord which contains figures ==> figuremode
368 ;; if the sequence contains EventChord which contains lyrics ==> lyricmode
369 ;; if the sequence contains EventChord which contains drum notes ==> drummode
370 (cond ((any (lambda (chord)
371 (any (make-music-type-predicate 'BassFigureEvent)
372 (ly:music-property chord 'elements)))
373 (filter chord? elements))
375 ((any (lambda (chord)
376 (any (make-music-type-predicate 'LyricEvent)
378 (ly:music-property chord 'elements))))
379 (filter note-or-chord? elements))
381 ((any (lambda (chord)
384 (not (null? (ly:music-property event 'drum-type)))))
386 (ly:music-property chord 'elements))))
387 (filter note-or-chord? elements))
389 (else ;; TODO: other modes?
392 (if force-line-break 1 0)
393 (if force-line-break (+ 2 (*indent*)) 1)
394 (parameterize ((*indent* (+ 2 (*indent*))))
395 (map-in-order (lambda (music)
396 (music->lily-string music parser))
398 (if force-line-break 1 0)
399 (if force-line-break (*indent*) 1))))
401 (define-display-method SimultaneousMusic (sim parser)
402 (parameterize ((*indent* (+ 3 (*indent*))))
403 (format #f "<< ~{~a ~}>>"
404 (map-in-order (lambda (music)
405 (music->lily-string music parser))
406 (ly:music-property sim 'elements)))))
408 (define-extra-display-method SimultaneousMusic (expr parser)
409 "If `sim' is an \afterGrace expression, return \"\\afterGrace ...\".
410 Otherwise, return #f."
411 ;; TODO: do something with afterGraceFraction?
412 (with-music-match (expr (music 'SimultaneousMusic
413 elements (?before-grace
414 (music 'SequentialMusic
415 elements ((music 'SkipMusic)
418 (format #f "\\afterGrace ~a ~a"
419 (music->lily-string ?before-grace parser)
420 (music->lily-string ?grace parser))))
426 (define-display-method EventChord (chord parser)
427 ;; event_chord : command_element
428 ;; | note_chord_element
430 ;; TODO : tagged post_events
431 ;; post_events : ( post_event | tagged_post_event )*
432 ;; tagged_post_event: '-' \tag embedded_scm post_event
434 (let* ((elements (append (ly:music-property chord 'elements)
435 (ly:music-property chord 'articulations)))
436 (chord-repeat (ly:music-property chord 'duration)))
439 (partition (lambda (m) (music-is-of-type? m 'rhythmic-event))
441 (lambda (chord-elements other-elements)
442 (cond ((pair? chord-elements)
443 ;; note_chord_element :
444 ;; '<' (notepitch | drumpitch)* '>" duration post_events
445 (let ((duration (duration->lily-string (ly:music-property
449 ;; Format duration first so that it does not appear on
451 (format #f "< ~{~a ~}>~a~:{~:[-~;~]~a~^ ~}"
452 (map-in-order (lambda (music)
453 (music->lily-string music parser))
456 (map-in-order (lambda (music)
459 (music->lily-string music parser)))
461 ((ly:duration? chord-repeat)
462 (let ((duration (duration->lily-string chord-repeat
464 (format #f "q~a~:{~:[-~;~]~a~^ ~}"
466 (map-in-order (lambda (music)
469 (music->lily-string music parser)))
472 ((and (= 1 (length other-elements))
473 (not (post-event? (car other-elements))))
474 (format #f (music->lily-string (car other-elements) parser)))
476 (format #f "< >~:{~:[-~;~]~a~^ ~}"
477 (map-in-order (lambda (music)
480 (music->lily-string music parser)))
481 other-elements))))))))
483 (define-display-method MultiMeasureRestMusic (mmrest parser)
484 (format #f "R~a~{~a~^ ~}"
485 (duration->lily-string (ly:music-property mmrest 'duration)
487 (map-in-order (lambda (music)
488 (music->lily-string music parser))
489 (ly:music-property mmrest 'articulations))))
491 (define-display-method SkipMusic (skip parser)
492 (format #f "\\skip ~a" (duration->lily-string (ly:music-property skip 'duration) #:force-duration #t)))
494 (define-display-method OttavaMusic (ottava parser)
495 (format #f "\\ottava #~a" (ly:music-property ottava 'ottava-number)))
498 ;;; Notes, rests, skips...
501 (define (simple-note->lily-string event parser)
502 (format #f "~a~a~a~a~a~a~:{~:[-~;~]~a~}" ; pitchname octave !? octave-check duration optional_rest articulations
503 (note-name->lily-string (ly:music-property event 'pitch) parser)
504 (octave->lily-string (ly:music-property event 'pitch))
505 (let ((forced (ly:music-property event 'force-accidental))
506 (cautionary (ly:music-property event 'cautionary)))
507 (cond ((and (not (null? forced))
509 (not (null? cautionary))
512 ((and (not (null? forced)) forced) "!")
514 (let ((octave-check (ly:music-property event 'absolute-octave)))
515 (if (not (null? octave-check))
516 (format #f "=~a" (cond ((>= octave-check 0)
517 (make-string (1+ octave-check) #\'))
519 (make-string (1- (* -1 octave-check)) #\,))
522 (duration->lily-string (ly:music-property event 'duration)
524 (if ((make-music-type-predicate 'RestEvent) event)
526 (map-in-order (lambda (event)
529 (music->lily-string event parser)))
530 (ly:music-property event 'articulations))))
532 (define-display-method NoteEvent (note parser)
533 (cond ((not (null? (ly:music-property note 'pitch))) ;; note
534 (simple-note->lily-string note parser))
535 ((not (null? (ly:music-property note 'drum-type))) ;; drum
536 (format #f "~a~a~{~a~}" (ly:music-property note 'drum-type)
537 (duration->lily-string (ly:music-property note 'duration)
539 (map-in-order (lambda (event)
540 (music->lily-string event parser))
541 (ly:music-property note 'articulations))))
545 (define-display-method ClusterNoteEvent (note parser)
546 (simple-note->lily-string note parser))
548 (define-display-method RestEvent (rest parser)
549 (if (not (null? (ly:music-property rest 'pitch)))
550 (simple-note->lily-string rest parser)
551 (format #f "r~a~{~a~}"
552 (duration->lily-string (ly:music-property rest 'duration)
554 (map-in-order (lambda (event)
555 (music->lily-string event parser))
556 (ly:music-property rest 'articulations)))))
558 (define-display-method MultiMeasureRestEvent (rest parser)
559 (string-append "R" (duration->lily-string (ly:music-property rest 'duration)
562 (define-display-method SkipEvent (rest parser)
563 (format #f "s~a~{~a~}"
564 (duration->lily-string (ly:music-property rest 'duration)
566 (map-in-order (lambda (event)
567 (music->lily-string event parser))
568 (ly:music-property rest 'articulations))))
570 (define-display-method RepeatedChord (chord parser)
571 (music->lily-string (ly:music-property chord 'element) parser))
573 (define-display-method MarkEvent (mark parser)
574 (let ((label (ly:music-property mark 'label)))
577 (format #f "\\mark ~a" (markup->lily-string label)))))
579 (define-display-method KeyChangeEvent (key parser)
580 (let ((pitch-alist (ly:music-property key 'pitch-alist))
581 (tonic (ly:music-property key 'tonic)))
582 (if (or (null? pitch-alist)
585 (let ((c-pitch-alist (ly:transpose-key-alist pitch-alist
586 (ly:pitch-diff (ly:make-pitch 0 0 0) tonic))))
587 (format #f "\\key ~a \\~a~a"
588 (note-name->lily-string (ly:music-property key 'tonic) parser)
591 (equal? (ly:parser-lookup parser mode) c-pitch-alist))
592 (symbol->string mode)
594 '(major minor ionian locrian aeolian mixolydian lydian phrygian dorian))
595 (new-line->lily-string))))))
597 (define-display-method RelativeOctaveCheck (octave parser)
598 (let ((pitch (ly:music-property octave 'pitch)))
599 (format #f "\\octaveCheck ~a~a"
600 (note-name->lily-string pitch parser)
601 (octave->lily-string pitch))))
603 (define-display-method VoiceSeparator (sep parser)
606 (define-display-method LigatureEvent (ligature parser)
607 (if (= START (ly:music-property ligature 'span-direction))
611 (define-display-method BarCheck (check parser)
612 (format #f "|~a" (new-line->lily-string)))
614 (define-display-method PesOrFlexaEvent (expr parser)
617 (define-display-method BassFigureEvent (figure parser)
618 (let ((alteration (ly:music-property figure 'alteration))
619 (fig (ly:music-property figure 'figure))
620 (bracket-start (ly:music-property figure 'bracket-start))
621 (bracket-stop (ly:music-property figure 'bracket-stop)))
623 (format #f "~a~a~a~a"
624 (if (null? bracket-start) "" "[")
625 (cond ((null? fig) "_")
626 ((markup? fig) (second fig)) ;; fig: (<number-markup> "number")
628 (if (null? alteration)
631 ((= alteration DOUBLE-FLAT) "--")
632 ((= alteration FLAT) "-")
633 ((= alteration NATURAL) "!")
634 ((= alteration SHARP) "+")
635 ((= alteration DOUBLE-SHARP) "++")
637 (if (null? bracket-stop) "" "]"))))
639 (define-display-method LyricEvent (lyric parser)
640 (format "~a~{~a~^ ~}"
641 (let ((text (ly:music-property lyric 'text)))
642 (if (or (string? text)
643 (eqv? (first text) simple-markup))
644 ;; a string or a simple markup
645 (let ((string (if (string? text)
648 (if (string-match "(\"| |[0-9])" string)
649 ;; TODO check exactly in which cases double quotes should be used
650 (format #f "~s" string)
652 (markup->lily-string text)))
653 (map-in-order (lambda (m) (music->lily-string m parser))
654 (ly:music-property lyric 'articulations))))
656 (define-display-method BreathingEvent (event parser)
663 (define-display-method AutoChangeMusic (m parser)
664 (format #f "\\autochange ~a"
665 (music->lily-string (ly:music-property m 'element) parser)))
667 (define-display-method ContextChange (m parser)
668 (format #f "\\change ~a = \"~a\""
669 (ly:music-property m 'change-to-type)
670 (ly:music-property m 'change-to-id)))
674 (define-display-method TimeScaledMusic (times parser)
675 (let* ((num (ly:music-property times 'numerator))
676 (den (ly:music-property times 'denominator))
677 (nd-gcd (gcd num den)))
678 (parameterize ((*force-line-break* #f)
679 (*time-factor-numerator* (/ num nd-gcd))
680 (*time-factor-denominator* (/ den nd-gcd)))
681 (format #f "\\times ~a/~a ~a"
684 (music->lily-string (ly:music-property times 'element) parser)))))
686 (define-display-method RelativeOctaveMusic (m parser)
687 (music->lily-string (ly:music-property m 'element) parser))
689 (define-display-method TransposedMusic (m parser)
690 (music->lily-string (ly:music-property m 'element) parser))
696 (define-display-method AlternativeEvent (alternative parser) "")
698 (define (repeat->lily-string expr repeat-type parser)
699 (let* ((main (music->lily-string (ly:music-property expr 'element) parser)))
700 (format #f "\\repeat ~a ~a ~a ~a"
702 (ly:music-property expr 'repeat-count)
704 (let ((alternatives (ly:music-property expr 'elements)))
705 (if (null? alternatives)
707 (format #f "\\alternative { ~{~a ~}}"
708 (map-in-order (lambda (music)
709 (music->lily-string music parser))
712 (define-display-method VoltaRepeatedMusic (expr parser)
713 (repeat->lily-string expr "volta" parser))
715 (define-display-method UnfoldedRepeatedMusic (expr parser)
716 (repeat->lily-string expr "unfold" parser))
718 (define-display-method PercentRepeatedMusic (expr parser)
719 (repeat->lily-string expr "percent" parser))
721 (define-display-method TremoloRepeatedMusic (expr parser)
722 (let* ((main (ly:music-property expr 'element))
723 (children (if (music-is-of-type? main 'sequential-music)
724 ;; \repeat tremolo n { ... }
725 (length (extract-named-music main '(EventChord
727 ;; \repeat tremolo n c4
729 (times (ly:music-property expr 'repeat-count))
731 ;; # of dots is equal to the 1 in bitwise representation (minus 1)!
732 (dots (1- (logcount (* times children))))
733 ;; The remaining missing multiplicator to scale the notes by
735 (mult (/ (* times children (ash 1 dots)) (1- (ash 2 dots))))
736 (shift (- (ly:intlog2 (floor mult)))))
737 (set! main (ly:music-deep-copy main))
738 ;; Adjust the time of the notes
739 (ly:music-compress main (ly:make-moment children 1))
740 ;; Adjust the displayed note durations
741 (shift-duration-log main (- shift) (- dots))
742 (format #f "\\repeat tremolo ~a ~a"
744 (music->lily-string main parser))))
750 (define-display-method ContextSpeccedMusic (expr parser)
751 (let ((id (ly:music-property expr 'context-id))
752 (create-new (ly:music-property expr 'create-new))
753 (music (ly:music-property expr 'element))
754 (operations (ly:music-property expr 'property-operations))
755 (ctype (ly:music-property expr 'context-type)))
756 (format #f "~a ~a~a~a ~a"
757 (if (and (not (null? create-new)) create-new)
763 (format #f " = ~s" id))
764 (if (null? operations)
766 (format #f " \\with {~{~a~}~%~v_}"
767 (parameterize ((*indent* (+ (*indent*) 2)))
769 (format #f "~%~v_\\~a ~s"
775 (parameterize ((*current-context* ctype))
776 (music->lily-string music parser)))))
778 ;; special cases: \figures \lyrics \drums
779 (define-extra-display-method ContextSpeccedMusic (expr parser)
780 (with-music-match (expr (music 'ContextSpeccedMusic
782 property-operations ?op
783 context-type ?context-type
786 (parameterize ((*explicit-mode* #f))
789 (format #f "\\figures ~a" (music->lily-string ?sequence parser)))
791 (format #f "\\lyrics ~a" (music->lily-string ?sequence parser)))
793 (format #f "\\drums ~a" (music->lily-string ?sequence parser)))
798 ;;; Context properties
800 (define-extra-display-method ContextSpeccedMusic (expr parser)
801 (let ((element (ly:music-property expr 'element))
802 (property-tuning? (make-music-type-predicate 'PropertySet
806 (sequence? (make-music-type-predicate 'SequentialMusic)))
807 (if (and (ly:music? element)
808 (or (property-tuning? element)
809 (and (sequence? element)
810 (every property-tuning? (ly:music-property element 'elements)))))
811 (parameterize ((*current-context* (ly:music-property expr 'context-type)))
812 (music->lily-string element parser))
815 (define (property-value->lily-string arg parser)
816 (cond ((ly:music? arg)
817 (music->lily-string arg parser))
819 (format #f "#~s" arg))
821 (markup->lily-string arg))
823 (format #f "#~a" (scheme-expr->lily-string arg)))))
825 (define-display-method PropertySet (expr parser)
826 (let ((property (ly:music-property expr 'symbol))
827 (value (ly:music-property expr 'value))
828 (once (ly:music-property expr 'once)))
829 (format #f "~a\\set ~a~a = ~a~a"
830 (if (and (not (null? once)))
833 (if (eqv? (*current-context*) 'Bottom)
835 (format #f "~a . " (*current-context*)))
837 (property-value->lily-string value parser)
838 (new-line->lily-string))))
840 (define-display-method PropertyUnset (expr parser)
841 (format #f "\\unset ~a~a~a"
842 (if (eqv? (*current-context*) 'Bottom)
844 (format #f "~a . " (*current-context*)))
845 (ly:music-property expr 'symbol)
846 (new-line->lily-string)))
848 ;;; Layout properties
850 (define-display-method OverrideProperty (expr parser)
851 (let* ((symbol (ly:music-property expr 'symbol))
852 (properties (ly:music-property expr 'grob-property-path
853 (list (ly:music-property expr 'grob-property))))
854 (value (ly:music-property expr 'grob-value))
855 (once (ly:music-property expr 'once)))
857 (format #f "~a\\override ~a~a #'~a = ~a~a"
862 (if (eqv? (*current-context*) 'Bottom)
864 (format #f "~a . " (*current-context*)))
866 (if (null? (cdr properties))
869 (property-value->lily-string value parser)
870 (new-line->lily-string))))
872 (define-display-method RevertProperty (expr parser)
873 (let* ((symbol (ly:music-property expr 'symbol))
874 (properties (ly:music-property expr 'grob-property-path
875 (list (ly:music-property expr 'grob-property)))))
876 (format #f "\\revert ~a~a #'~a~a"
877 (if (eqv? (*current-context*) 'Bottom)
879 (format #f "~a . " (*current-context*)))
881 (if (null? (cdr properties))
884 (new-line->lily-string))))
886 (define-display-method TimeSignatureMusic (expr parser)
887 (let* ((num (ly:music-property expr 'numerator))
888 (den (ly:music-property expr 'denominator))
889 (structure (ly:music-property expr 'beat-structure)))
890 (if (null? structure)
894 (new-line->lily-string))
896 "\\time #'~a ~a/~a~a"
898 (new-line->lily-string)))))
900 ;;; \melisma and \melismaEnd
901 (define-extra-display-method ContextSpeccedMusic (expr parser)
902 "If expr is a melisma, return \"\\melisma\", otherwise, return #f."
903 (with-music-match (expr (music 'ContextSpeccedMusic
904 element (music 'PropertySet
906 symbol 'melismaBusy)))
909 (define-extra-display-method ContextSpeccedMusic (expr parser)
910 "If expr is a melisma end, return \"\\melismaEnd\", otherwise, return #f."
911 (with-music-match (expr (music 'ContextSpeccedMusic
912 element (music 'PropertyUnset
913 symbol 'melismaBusy)))
917 (define-extra-display-method SequentialMusic (expr parser)
918 (with-music-match (expr (music 'SequentialMusic
919 elements ((music 'TempoChangeEvent
922 metronome-count ?count)
923 (music 'ContextSpeccedMusic
924 element (music 'PropertySet
925 symbol 'tempoWholesPerMinute)))))
926 (format #f "\\tempo ~{~a~a~}~a = ~a~a"
928 (list (markup->lily-string ?text) " ")
930 (duration->lily-string ?unit #:force-duration #t)
932 (format #f "~a ~~ ~a" (car ?count) (cdr ?count))
934 (new-line->lily-string))))
936 (define-display-method TempoChangeEvent (expr parser)
937 (let ((text (ly:music-property expr 'text)))
938 (format #f "\\tempo ~a~a"
939 (markup->lily-string text)
940 (new-line->lily-string))))
943 (define clef-name-alist #f)
944 (define-public (memoize-clef-names clefs)
945 "Initialize @code{clef-name-alist}, if not already set."
946 (if (not clef-name-alist)
947 (set! clef-name-alist
948 (map (lambda (name+vals)
949 (cons (cdr name+vals)
953 (define-extra-display-method ContextSpeccedMusic (expr parser)
954 "If @var{expr} is a clef change, return \"\\clef ...\".
955 Otherwise, return @code{#f}."
956 (with-music-match (expr (music 'ContextSpeccedMusic
958 element (music 'SequentialMusic
959 elements ((music 'PropertySet
963 symbol 'middleCClefPosition)
966 symbol 'clefPosition)
968 value ?clef-octavation
969 symbol 'clefOctavation)
971 procedure ly:set-middle-C!)))))
972 (let ((clef-name (assoc-get (list ?clef-glyph ?clef-position 0)
975 (format #f "\\clef \"~a~{~a~a~}\"~a"
977 (cond ((= 0 ?clef-octavation)
979 ((> ?clef-octavation 0)
980 (list "^" (1+ ?clef-octavation)))
982 (list "_" (- 1 ?clef-octavation))))
983 (new-line->lily-string))
987 (define-extra-display-method ContextSpeccedMusic (expr parser)
988 "If `expr' is a bar, return \"\\bar ...\".
989 Otherwise, return #f."
990 (with-music-match (expr (music 'ContextSpeccedMusic
992 element (music 'PropertySet
995 (format #f "\\bar \"~a\"~a" ?bar-type (new-line->lily-string))))
998 (define-extra-display-method ContextSpeccedMusic (expr parser)
999 "If `expr' is a partial measure, return \"\\partial ...\".
1000 Otherwise, return #f."
1001 (with-music-match (expr (music
1002 'ContextSpeccedMusic
1004 'ContextSpeccedMusic
1005 context-type 'Timing
1008 partial-duration ?duration))))
1011 (format #f "\\partial ~a"
1012 (duration->lily-string ?duration #:force-duration #t)))))
1017 (define-display-method ApplyOutputEvent (applyoutput parser)
1018 (let ((proc (ly:music-property applyoutput 'procedure))
1019 (ctx (ly:music-property applyoutput 'context-type)))
1020 (format #f "\\applyOutput #'~a #~a"
1022 (or (procedure-name proc)
1023 (with-output-to-string
1025 (pretty-print (procedure-source proc))))))))
1027 (define-display-method ApplyContext (applycontext parser)
1028 (let ((proc (ly:music-property applycontext 'procedure)))
1029 (format #f "\\applyContext #~a"
1030 (or (procedure-name proc)
1031 (with-output-to-string
1033 (pretty-print (procedure-source proc))))))))
1036 (define-display-method PartCombineMusic (expr parser)
1037 (format #f "\\partcombine ~{~a ~}"
1038 (map-in-order (lambda (music)
1039 (music->lily-string music parser))
1040 (ly:music-property expr 'elements))))
1042 (define-extra-display-method PartCombineMusic (expr parser)
1043 (with-music-match (expr (music 'PartCombineMusic
1044 elements ((music 'UnrelativableMusic
1045 element (music 'ContextSpeccedMusic
1048 element ?sequence1))
1049 (music 'UnrelativableMusic
1050 element (music 'ContextSpeccedMusic
1053 element ?sequence2)))))
1054 (format #f "\\partcombine ~a~a~a"
1055 (music->lily-string ?sequence1 parser)
1056 (new-line->lily-string)
1057 (music->lily-string ?sequence2 parser))))
1059 (define-display-method UnrelativableMusic (expr parser)
1060 (music->lily-string (ly:music-property expr 'element) parser))
1063 (define-display-method QuoteMusic (expr parser)
1064 (or (with-music-match (expr (music
1066 quoted-voice-direction ?quoted-voice-direction
1067 quoted-music-name ?quoted-music-name
1068 quoted-context-id "cue"
1069 quoted-context-type 'Voice
1071 (format #f "\\cueDuring #~s #~a ~a"
1073 ?quoted-voice-direction
1074 (music->lily-string ?music parser)))
1075 (format #f "\\quoteDuring #~s ~a"
1076 (ly:music-property expr 'quoted-music-name)
1077 (music->lily-string (ly:music-property expr 'element) parser))))
1082 (define-display-method LineBreakEvent (expr parser)
1083 (if (null? (ly:music-property expr 'break-permission))
1087 (define-display-method PageBreakEvent (expr parser)
1088 (if (null? (ly:music-property expr 'break-permission))
1092 (define-display-method PageTurnEvent (expr parser)
1093 (if (null? (ly:music-property expr 'break-permission))
1097 (define-extra-display-method EventChord (expr parser)
1098 (with-music-match (expr (music 'EventChord
1099 elements ((music 'LineBreakEvent
1100 break-permission 'force)
1101 (music 'PageBreakEvent
1102 break-permission 'force))))
1105 (define-extra-display-method EventChord (expr parser)
1106 (with-music-match (expr (music 'EventChord
1107 elements ((music 'LineBreakEvent
1108 break-permission 'force)
1109 (music 'PageBreakEvent
1110 break-permission 'force)
1111 (music 'PageTurnEvent
1112 break-permission 'force))))
1120 (define-display-method LyricCombineMusic (expr parser)
1121 (format #f "\\lyricsto ~s ~a"
1122 (ly:music-property expr 'associated-context)
1123 (parameterize ((*explicit-mode* #f))
1124 (music->lily-string (ly:music-property expr 'element) parser))))
1127 (define-extra-display-method SimultaneousMusic (expr parser)
1128 (with-music-match (expr (music 'SimultaneousMusic
1129 elements ((music 'ContextSpeccedMusic
1132 element ?note-sequence)
1133 (music 'ContextSpeccedMusic
1134 context-type 'Lyrics
1136 element (music 'LyricCombineMusic
1137 associated-context ?associated-id
1138 element ?lyric-sequence)))))
1139 (if (string=? ?id ?associated-id)
1140 (format #f "~a~a \\addlyrics ~a"
1141 (music->lily-string ?note-sequence parser)
1142 (new-line->lily-string)
1143 (parameterize ((*explicit-mode* #f))
1144 (music->lily-string ?lyric-sequence parser)))
1147 ;; Silence internal event sent at end of each lyrics block
1148 (define-display-method CompletizeExtenderEvent (expr parser)