1 ;;;; music-functions.scm --
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
8 ;; (use-modules (ice-9 optargs))
10 ;;; ly:music-property with setter
11 ;;; (ly:music-property my-music 'elements)
12 ;;; ==> the 'elements property
13 ;;; (set! (ly:music-property my-music 'elements) value)
14 ;;; ==> set the 'elements property and return it
15 (define-public ly:music-property
16 (make-procedure-with-setter ly:music-property
17 ly:music-set-property!))
19 (define-safe-public (music-is-of-type? mus type)
20 "Does @code{mus} belong to the music class @code{type}?"
21 (memq type (ly:music-property mus 'types)))
24 (define-public ly:grob-property
25 (make-procedure-with-setter ly:grob-property
26 ly:grob-set-property!))
28 (define-public ly:prob-property
29 (make-procedure-with-setter ly:prob-property
30 ly:prob-set-property!))
32 (define-public (music-map function music)
33 "Apply @var{function} to @var{music} and all of the music it contains.
35 First it recurses over the children, then the function is applied to MUSIC.
37 (let ((es (ly:music-property music 'elements))
38 (e (ly:music-property music 'element)))
39 (set! (ly:music-property music 'elements)
40 (map (lambda (y) (music-map function y)) es))
42 (set! (ly:music-property music 'element)
43 (music-map function e)))
46 (define-public (music-filter pred? music)
47 "Filter out music expressions that do not satisfy PRED."
49 (define (inner-music-filter pred? music)
51 (let* ((es (ly:music-property music 'elements))
52 (e (ly:music-property music 'element))
53 (as (ly:music-property music 'articulations))
54 (filtered-as (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) as)))
55 (filtered-e (if (ly:music? e)
56 (inner-music-filter pred? e)
58 (filtered-es (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) es))))
59 (set! (ly:music-property music 'element) filtered-e)
60 (set! (ly:music-property music 'elements) filtered-es)
61 (set! (ly:music-property music 'articulations) filtered-as)
62 ;; if filtering emptied the expression, we remove it completely.
63 (if (or (not (pred? music))
64 (and (eq? filtered-es '()) (not (ly:music? e))
65 (or (not (eq? es '()))
70 (set! music (inner-music-filter pred? music))
73 (make-music 'Music))) ;must return music.
75 (define-public (display-music music)
76 "Display music, not done with music-map for clarity of presentation."
80 (let ((es (ly:music-property music 'elements))
81 (e (ly:music-property music 'element)))
82 (display (ly:music-mutable-properties music))
84 (begin (display "\nElements: {\n")
85 (map display-music es)
95 ;;; A scheme music pretty printer
97 (define (markup-expression->make-markup markup-expression)
98 "Transform `markup-expression' into an equivalent, hopefuly readable, scheme expression.
100 \\markup \\bold \\italic hello
102 (markup #:line (#:bold (#:italic (#:simple \"hello\"))))"
103 (define (proc->command-keyword proc)
104 "Return a keyword, eg. `#:bold', from the `proc' function, eg. #<procedure bold-markup (layout props arg)>"
105 (let ((cmd-markup (symbol->string (procedure-name proc))))
106 (symbol->keyword (string->symbol (substring cmd-markup 0 (- (string-length cmd-markup)
107 (string-length "-markup")))))))
108 (define (transform-arg arg)
109 (cond ((and (pair? arg) (markup? (car arg))) ;; a markup list
110 (apply append (map inner-markup->make-markup arg)))
111 ((and (not (string? arg)) (markup? arg)) ;; a markup
112 (inner-markup->make-markup arg))
115 (define (inner-markup->make-markup mrkup)
118 (let ((cmd (proc->command-keyword (car mrkup)))
119 (args (map transform-arg (cdr mrkup))))
122 (if (string? markup-expression)
124 `(markup ,@(inner-markup->make-markup markup-expression))))
126 (define-public (music->make-music obj)
127 "Generate a expression that, once evaluated, may return an object equivalent to `obj',
128 that is, for a music expression, a (make-music ...) form."
129 (cond (;; markup expression
131 (markup-expression->make-markup obj))
135 ',(ly:music-property obj 'name)
136 ,@(apply append (map (lambda (prop)
138 ,(music->make-music (cdr prop))))
139 (remove (lambda (prop)
140 (eqv? (car prop) 'origin))
141 (ly:music-mutable-properties obj))))))
144 `(ly:make-moment ,(ly:moment-main-numerator obj)
145 ,(ly:moment-main-denominator obj)
146 ,(ly:moment-grace-numerator obj)
147 ,(ly:moment-grace-denominator obj)))
150 `(ly:make-duration ,(ly:duration-log obj)
151 ,(ly:duration-dot-count obj)
152 ,(car (ly:duration-factor obj))
153 ,(cdr (ly:duration-factor obj))))
156 `(ly:make-pitch ,(ly:pitch-octave obj)
157 ,(ly:pitch-notename obj)
158 ,(ly:pitch-alteration obj)))
161 (or (procedure-name obj) obj))
162 (;; a symbol (avoid having an unquoted symbol)
165 (;; an empty list (avoid having an unquoted empty list)
170 `(list ,@(map music->make-music obj)))
173 `(cons ,(music->make-music (car obj))
174 ,(music->make-music (cdr obj))))
178 (use-modules (ice-9 pretty-print))
179 (define*-public (display-scheme-music obj #:optional (port (current-output-port)))
180 "Displays `obj', typically a music expression, in a friendly fashion,
181 which often can be read back in order to generate an equivalent expression.
185 (pretty-print (music->make-music obj) port)
190 ;;; Scheme music expression --> Lily-syntax-using string translator
192 (use-modules (srfi srfi-39)
195 (define*-public (display-lily-music expr parser #:key force-duration)
196 "Display the music expression using LilyPond syntax"
197 (memoize-clef-names supported-clefs)
198 (parameterize ((*indent* 0)
199 (*previous-duration* (ly:make-duration 2))
200 (*force-duration* force-duration))
201 (display (music->lily-string expr parser))
204 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
206 (define-public (shift-one-duration-log music shift dot)
207 " add SHIFT to duration-log of 'duration in music and optionally
208 a dot to any note encountered. This scales the music up by a factor
209 2^shift * (2 - (1/2)^dot)"
210 (let ((d (ly:music-property music 'duration)))
212 (let* ((cp (ly:duration-factor d))
213 (nd (ly:make-duration (+ shift (ly:duration-log d))
214 (+ dot (ly:duration-dot-count d))
217 (set! (ly:music-property music 'duration) nd)))
220 (define-public (shift-duration-log music shift dot)
221 (music-map (lambda (x) (shift-one-duration-log x shift dot))
224 (define-public (make-repeat name times main alts)
225 "create a repeat music expression, with all properties initialized properly"
226 (let ((talts (if (< times (length alts))
228 (ly:warning (_ "More alternatives than repeats. Junking excess alternatives"))
231 (r (make-repeated-music name)))
232 (set! (ly:music-property r 'element) main)
233 (set! (ly:music-property r 'repeat-count) (max times 1))
234 (set! (ly:music-property r 'elements) talts)
235 (if (equal? name "tremolo")
236 (let* ((dot? (zero? (modulo times 3)))
239 (quotient (* times 2) 3)
241 (shift (- (ly:intlog2 mult))))
243 (if (memq 'sequential-music (ly:music-property main 'types))
244 ;; \repeat "tremolo" { c4 d4 }
245 (let ((children (length (ly:music-property main 'elements))))
247 ;; fixme: should be more generic.
248 (if (and (not (= children 2))
249 (not (= children 1)))
250 (ly:warning (_ "expecting 2 elements for chord tremolo, found ~a") children))
251 (ly:music-compress r (ly:make-moment 1 children))
252 (shift-duration-log r
253 (if (= children 2) (1- shift) shift)
255 ;; \repeat "tremolo" c4
256 (shift-duration-log r shift dots)))
259 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
262 (define-public (note-to-cluster music)
263 "Replace NoteEvents by ClusterNoteEvents."
264 (if (eq? (ly:music-property music 'name) 'NoteEvent)
265 (make-music 'ClusterNoteEvent
266 'pitch (ly:music-property music 'pitch)
267 'duration (ly:music-property music 'duration))
270 (define-public (notes-to-clusters music)
271 (music-map note-to-cluster music))
273 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
276 (define-public (unfold-repeats music)
278 This function replaces all repeats with unfold repeats. "
280 (let ((es (ly:music-property music 'elements))
281 (e (ly:music-property music 'element))
283 (if (memq 'repeated-music (ly:music-property music 'types))
285 ((props (ly:music-mutable-properties music))
286 (old-name (ly:music-property music 'name))
287 (flattened (flatten-alist props)))
289 (set! music (apply make-music (cons 'UnfoldedRepeatedMusic
292 (if (equal? old-name 'TremoloRepeatedMusic)
293 (let* ((seq-arg? (memq 'sequential-music
294 (ly:music-property e 'types)))
295 (count (ly:music-property music 'repeat-count))
296 (dot-shift (if (= 0 (remainder count 3))
300 (set! count (* 2 (quotient count 3))))
302 (shift-duration-log music (+ (if seq-arg? 1 0)
303 (ly:intlog2 count)) dot-shift)
306 (ly:music-compress e (ly:make-moment (length (ly:music-property
307 e 'elements)) 1)))))))
311 (set! (ly:music-property music 'elements)
312 (map unfold-repeats es)))
314 (set! (ly:music-property music 'element)
318 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
319 ;; property setting music objs.
321 (define-public (make-grob-property-set grob gprop val)
322 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
323 i.e. this is not an override"
324 (make-music 'OverrideProperty
330 (define-public (make-grob-property-override grob gprop val)
331 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
332 i.e. this is not an override"
333 (make-music 'OverrideProperty
338 (define-public (make-grob-property-revert grob gprop)
339 "Revert the grob property GPROP for GROB."
340 (make-music 'RevertProperty
342 'grob-property gprop))
344 (define direction-polyphonic-grobs
345 '(Stem Tie Rest Slur PhrasingSlur Script TextScript Dots DotColumn Fingering))
347 (define-safe-public (make-voice-props-set n)
348 (make-sequential-music
350 (map (lambda (x) (make-grob-property-set x 'direction
352 direction-polyphonic-grobs)
354 (make-grob-property-set 'NoteColumn 'horizontal-shift (quotient n 2))
355 (make-grob-property-set 'MultiMeasureRest 'staff-position (if (odd? n) -4 4))))))
357 (define-safe-public (make-voice-props-revert)
358 (make-sequential-music
360 (map (lambda (x) (make-grob-property-revert x 'direction))
361 direction-polyphonic-grobs)
362 (list (make-grob-property-revert 'NoteColumn 'horizontal-shift))
363 (list (make-grob-property-revert 'MultiMeasureRest 'staff-position)))))
366 (define-safe-public (context-spec-music m context #:optional id)
367 "Add \\context CONTEXT = ID to M. "
368 (let ((cm (make-music 'ContextSpeccedMusic
370 'context-type context)))
372 (set! (ly:music-property cm 'context-id) id))
375 (define-public (descend-to-context m context)
376 "Like context-spec-music, but only descending. "
377 (let ((cm (context-spec-music m context)))
378 (ly:music-set-property! cm 'descend-only #t)
381 (define-public (make-non-relative-music mus)
382 (make-music 'UnrelativableMusic
385 (define-public (make-apply-context func)
386 (make-music 'ApplyContext
389 (define-public (make-sequential-music elts)
390 (make-music 'SequentialMusic
393 (define-public (make-simultaneous-music elts)
394 (make-music 'SimultaneousMusic
397 (define-safe-public (make-event-chord elts)
398 (make-music 'EventChord
401 (define-public (make-skip-music dur)
402 (make-music 'SkipMusic
405 (define-public (make-grace-music music)
406 (make-music 'GraceMusic
412 (define-public (make-multi-measure-rest duration location)
413 (make-music 'MultiMeasureRestMusic
417 (define-public (make-property-set sym val)
418 (make-music 'PropertySet
422 (define-public (make-property-unset sym)
423 (make-music 'PropertyUnset
426 (define-public (make-ottava-set octavation)
427 (let ((m (make-music 'ApplyContext)))
428 (define (ottava-modify context)
429 "Either reset middleCPosition to the stored original, or remember
430 old middleCPosition, add OCTAVATION to middleCPosition, and set
431 OTTAVATION to `8va', or whatever appropriate."
432 (if (number? (ly:context-property context 'middleCPosition))
434 (if (number? (ly:context-property context 'originalMiddleCPosition))
435 (let ((where (ly:context-property-where-defined context 'middleCPosition)))
437 (ly:context-set-property! context 'middleCPosition
438 (ly:context-property context 'originalMiddleCPosition))
439 (ly:context-unset-property where 'originalMiddleCPosition)
440 (ly:context-unset-property where 'ottavation)))
442 (let* ((where (ly:context-property-where-defined context 'middleCPosition))
443 (c0 (ly:context-property context 'middleCPosition))
444 (new-c0 (+ c0 (* -7 octavation)))
445 (string (cdr (assoc octavation '((2 . "15ma")
450 (ly:context-set-property! context 'middleCPosition new-c0)
451 (ly:context-set-property! context 'originalMiddleCPosition c0)
452 (ly:context-set-property! context 'ottavation string)))))
453 (set! (ly:music-property m 'procedure) ottava-modify)
454 (context-spec-music m 'Staff)))
456 (define-public (set-octavation ottavation)
457 (ly:export (make-ottava-set ottavation)))
459 (define-public (make-time-signature-set num den . rest)
460 "Set properties for time signature NUM/DEN. Rest can contain a list
463 (define (standard-beat-grouping num den)
465 "Some standard subdivisions for time signatures."
467 ((key (cons num den))
468 (entry (assoc key '(((6 . 8) . (3 3))
471 ((12 . 8) . (3 3 3 3))
479 (let* ((set1 (make-property-set 'timeSignatureFraction (cons num den)))
480 (beat (ly:make-moment 1 den))
481 (len (ly:make-moment num den))
482 (set2 (make-property-set 'beatLength beat))
483 (set3 (make-property-set 'measureLength len))
484 (set4 (make-property-set 'beatGrouping (if (pair? rest)
486 (standard-beat-grouping num den))))
487 (basic (list set1 set2 set3 set4)))
489 (context-spec-music (make-sequential-music basic) 'Timing) 'Score)))
491 (define-public (make-mark-set label)
492 "Make the music for the \\mark command."
493 (let* ((set (if (integer? label)
494 (context-spec-music (make-property-set 'rehearsalMark label)
497 (ev (make-music 'MarkEvent))
498 (ch (make-event-chord (list ev))))
500 (make-sequential-music (list set ch))
502 (set! (ly:music-property ev 'label) label)
505 (define-public (set-time-signature num den . rest)
506 (ly:export (apply make-time-signature-set `(,num ,den . ,rest))))
508 (define-safe-public (make-articulation name)
509 (make-music 'ArticulationEvent
510 'articulation-type name))
512 (define-public (make-lyric-event string duration)
513 (make-music 'LyricEvent
517 (define-safe-public (make-span-event type span-dir)
519 'span-direction span-dir))
521 (define-public (set-mus-properties! m alist)
522 "Set all of ALIST as properties of M."
525 (set! (ly:music-property m (caar alist)) (cdar alist))
526 (set-mus-properties! m (cdr alist)))))
528 (define-public (music-separator? m)
530 (let ((ts (ly:music-property m 'types)))
531 (memq 'separator ts)))
533 ;;; splitting chords into voices.
534 (define (voicify-list lst number)
535 "Make a list of Musics.
537 voicify-list :: [ [Music ] ] -> number -> [Music]
538 LST is a list music-lists.
540 NUMBER is 0-base, i.e. Voice=1 (upstems) has number 0.
544 (cons (context-spec-music
545 (make-sequential-music
546 (list (make-voice-props-set number)
547 (make-simultaneous-music (car lst))))
548 'Voice (number->string (1+ number)))
549 (voicify-list (cdr lst) (1+ number)))))
551 (define (voicify-chord ch)
552 "Split the parts of a chord into different Voices using separator"
553 (let ((es (ly:music-property ch 'elements)))
554 (set! (ly:music-property ch 'elements)
555 (voicify-list (split-list-by-separator es music-separator?) 0))
558 (define-public (voicify-music m)
559 "Recursively split chords that are separated with \\ "
560 (if (not (ly:music? m))
561 (ly:error (_ "music expected: ~S") m))
562 (let ((es (ly:music-property m 'elements))
563 (e (ly:music-property m 'element)))
566 (set! (ly:music-property m 'elements) (map voicify-music es)))
568 (set! (ly:music-property m 'element) (voicify-music e)))
569 (if (and (equal? (ly:music-property m 'name) 'SimultaneousMusic)
570 (reduce (lambda (x y ) (or x y)) #f (map music-separator? es)))
571 (set! m (context-spec-music (voicify-chord m) 'Staff)))
574 (define-public (empty-music)
575 (ly:export (make-music 'Music)))
577 ;; Make a function that checks score element for being of a specific type.
578 (define-public (make-type-checker symbol)
581 ;;(eq? #t (ly:grob-property elt symbol))
582 (not (eq? #f (memq symbol (ly:grob-property elt 'interfaces))))))
584 (define-public ((outputproperty-compatibility func sym val) grob g-context ao-context)
586 (set! (ly:grob-property grob sym) val)))
589 (define-public ((set-output-property grob-name symbol val) grob grob-c context)
592 \\applyoutput #(set-output-property 'Clef 'extra-offset '(0 . 1))
595 (let ((meta (ly:grob-property grob 'meta)))
596 (if (equal? (cdr (assoc 'name meta)) grob-name)
597 (set! (ly:grob-property grob symbol) val))))
601 (define-public (smart-bar-check n)
602 "Make a bar check that checks for a specific bar number.
604 (let ((m (make-music 'ApplyContext)))
606 (let* ((bn (ly:context-property tr 'currentBarNumber)))
610 ;; FIXME: uncomprehensable message
611 (_ "Bar check failed. Expect to be at ~a, instead at ~a")
613 (set! (ly:music-property m 'procedure) checker)
617 (define-public (skip->rest mus)
619 "Replace MUS by RestEvent of the same duration if it is a
620 SkipEvent. Useful for extracting parts from crowded scores"
622 (if (memq (ly:music-property mus 'name) '(SkipEvent SkipMusic))
623 (make-music 'RestEvent 'duration (ly:music-property mus 'duration))
627 (define-public (music-has-type music type)
628 (memq type (ly:music-property music 'types)))
630 (define-public (music-clone music)
631 (define (alist->args alist acc)
634 (alist->args (cdr alist)
635 (cons (caar alist) (cons (cdar alist) acc)))))
639 (ly:music-property music 'name)
640 (alist->args (ly:music-mutable-properties music) '())))
642 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
643 ;; warn for bare chords at start.
646 (define-public (ly:music-message music msg)
647 (let ((ip (ly:music-property music 'origin)))
648 (if (ly:input-location? ip)
649 (ly:input-message ip msg)
652 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
654 ;; setting stuff for grace context.
657 (define (vector-extend v x)
658 "Make a new vector consisting of V, with X added to the end."
659 (let* ((n (vector-length v))
660 (nv (make-vector (+ n 1) '())))
661 (vector-move-left! v 0 n nv 0)
665 (define (vector-map f v)
666 "Map F over V. This function returns nothing."
667 (do ((n (vector-length v))
670 (f (vector-ref v i))))
672 (define (vector-reverse-map f v)
673 "Map F over V, N to 0 order. This function returns nothing."
674 (do ((i (- (vector-length v) 1) (- i 1)))
676 (f (vector-ref v i))))
678 ;; TODO: make a remove-grace-property too.
679 (define-public (add-grace-property context-name grob sym val)
680 "Set SYM=VAL for GROB in CONTEXT-NAME. "
681 (define (set-prop context)
682 (let* ((where (ly:context-property-where-defined context 'graceSettings))
683 (current (ly:context-property where 'graceSettings))
684 (new-settings (append current
685 (list (list context-name grob sym val)))))
686 (ly:context-set-property! where 'graceSettings new-settings)))
687 (ly:export (context-spec-music (make-apply-context set-prop) 'Voice)))
691 (defmacro-public def-grace-function (start stop)
692 `(define-music-function (parser location music) (ly:music?)
693 (make-music 'GraceMusic
695 'element (make-music 'SequentialMusic
696 'elements (list (ly:music-deep-copy ,start)
698 (ly:music-deep-copy ,stop))))))
700 (defmacro-public define-music-function (args signature . body)
701 "Helper macro for `ly:make-music-function'.
703 (define-music-function (parser location arg1 arg2 ...) (arg1-type? arg2-type? ...)
706 `(ly:make-music-function (list ,@signature)
711 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
713 (define-public (cue-substitute quote-music)
714 "Must happen after quote-substitute."
716 (if (vector? (ly:music-property quote-music 'quoted-events))
717 (let* ((dir (ly:music-property quote-music 'quoted-voice-direction))
718 (main-voice (if (eq? 1 dir) 1 0))
719 (cue-voice (if (eq? 1 dir) 0 1))
720 (main-music (ly:music-property quote-music 'element))
721 (return-value quote-music))
723 (if (or (eq? 1 dir) (eq? -1 dir))
725 ;; if we have stem dirs, change both quoted and main music
726 ;; to have opposite stems.
730 ;; cannot context-spec Quote-music, since context
731 ;; for the quotes is determined in the iterator.
732 (make-sequential-music
734 (context-spec-music (make-voice-props-set cue-voice) 'CueVoice "cue")
736 (context-spec-music (make-voice-props-revert) 'CueVoice "cue"))))
738 (make-sequential-music
740 (make-voice-props-set main-voice)
742 (make-voice-props-revert))))
743 (set! (ly:music-property quote-music 'element) main-music)))
748 (define-public ((quote-substitute quote-tab) music)
749 (let* ((quoted-name (ly:music-property music 'quoted-music-name))
750 (quoted-vector (if (string? quoted-name)
751 (hash-ref quote-tab quoted-name #f)
755 (if (string? quoted-name)
756 (if (vector? quoted-vector)
758 (set! (ly:music-property music 'quoted-events) quoted-vector)
759 (set! (ly:music-property music 'iterator-ctor)
760 ly:quote-iterator::constructor))
761 (ly:warning (_ "cannot find quoted music: `~S'") quoted-name)))
765 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
766 ;; switch it on here, so parsing and init isn't checked (too slow!)
768 ;; automatic music transformations.
770 (define (switch-on-debugging m)
771 (if (defined? 'set-debug-cell-accesses!)
772 (set-debug-cell-accesses! 15000))
775 (define (music-check-error music)
778 (if (and (ly:music? m)
779 (eq? (ly:music-property m 'error-found) #t))
782 (for-each signal (ly:music-property music 'elements))
783 (signal (ly:music-property music 'element))
786 (set! (ly:music-property music 'error-found) #t))
789 (define (precompute-music-length music)
790 (set! (ly:music-property music 'length)
791 (ly:music-length music))
794 (define (skip-to-last music parser)
798 << { \\set skipTypesetting = ##t
799 LENGTHOF(\\showLastLength)
800 \\set skipTypesetting = ##t }
806 ((show-last (ly:parser-lookup parser 'showLastLength)))
808 (if (ly:music? show-last)
810 ((orig-length (ly:music-length music))
811 (skip-length (ly:moment-sub orig-length (ly:music-length show-last))))
813 (make-simultaneous-music
815 (make-sequential-music
817 (context-spec-music (make-property-set 'skipTypesetting #t)
819 (make-music 'SkipMusic 'duration
822 (ly:moment-main-numerator skip-length)
823 (ly:moment-main-denominator skip-length)))
824 (context-spec-music (make-property-set 'skipTypesetting #f)
830 (define-public toplevel-music-functions
832 (lambda (music parser) (voicify-music music))
833 (lambda (x parser) (music-map music-check-error x))
834 (lambda (x parser) (music-map precompute-music-length x))
835 (lambda (music parser)
837 (music-map (quote-substitute (ly:parser-lookup parser 'musicQuotes)) music))
839 ;; switch-on-debugging
840 (lambda (x parser) (music-map cue-substitute x))
843 (skip-to-last x parser)
850 (define (apply-durations lyric-music durations)
851 (define (apply-duration music)
852 (if (and (not (equal? (ly:music-length music) ZERO-MOMENT))
853 (ly:duration? (ly:music-property music 'duration)))
855 (set! (ly:music-property music 'duration) (car durations))
856 (set! durations (cdr durations)))))
858 (music-map apply-duration lyric-music))
861 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
864 (define-public (set-accidentals-properties extra-natural
868 (make-sequential-music
869 (append (if (boolean? extra-natural)
870 (list (make-property-set 'extraNatural extra-natural))
872 (list (make-property-set 'autoAccidentals auto-accs)
873 (make-property-set 'autoCautionaries auto-cauts))))
876 (define-public (set-accidental-style style . rest)
877 "Set accidental style to STYLE. Optionally takes a context argument,
878 e.g. 'Staff or 'Voice. The context defaults to Voice, except for piano styles, which
879 use GrandStaff as a context. "
880 (let ((context (if (pair? rest)
882 (pcontext (if (pair? rest)
883 (car rest) 'GrandStaff)))
886 ;; accidentals as they were common in the 18th century.
887 ((equal? style 'default)
888 (set-accidentals-properties #t '(Staff (same-octave . 0))
890 ;; accidentals from one voice do NOT get cancelled in other voices
891 ((equal? style 'voice)
892 (set-accidentals-properties #t '(Voice (same-octave . 0))
894 ;; accidentals as suggested by Kurt Stone, Music Notation in the 20th century.
895 ;; This includes all the default accidentals, but accidentals also needs cancelling
896 ;; in other octaves and in the next measure.
897 ((equal? style 'modern)
898 (set-accidentals-properties #f '(Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
900 ;; the accidentals that Stone adds to the old standard as cautionaries
901 ((equal? style 'modern-cautionary)
902 (set-accidentals-properties #f '(Staff (same-octave . 0))
903 '(Staff (any-octave . 0) (same-octave . 1))
905 ;; Multivoice accidentals to be read both by musicians playing one voice
906 ;; and musicians playing all voices.
907 ;; Accidentals are typeset for each voice, but they ARE cancelled across voices.
908 ((equal? style 'modern-voice)
909 (set-accidentals-properties #f
910 '(Voice (same-octave . 0) (any-octave . 0) (same-octave . 1)
911 Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
914 ;; same as modernVoiceAccidental eccept that all special accidentals are typeset
916 ((equal? style 'modern-voice-cautionary)
917 (set-accidentals-properties #f
918 '(Voice (same-octave . 0))
919 '(Voice (any-octave . 0) (same-octave . 1)
920 Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
922 ;; stone's suggestions for accidentals on grand staff.
923 ;; Accidentals are cancelled across the staves in the same grand staff as well
924 ((equal? style 'piano)
925 (set-accidentals-properties #f
926 '(Staff (same-octave . 0)
927 (any-octave . 0) (same-octave . 1)
928 GrandStaff (any-octave . 0) (same-octave . 1))
931 ((equal? style 'piano-cautionary)
932 (set-accidentals-properties #f
933 '(Staff (same-octave . 0))
934 '(Staff (any-octave . 0) (same-octave . 1)
935 GrandStaff (any-octave . 0) (same-octave . 1))
938 ;; do not set localKeySignature when a note alterated differently from
939 ;; localKeySignature is found.
940 ;; Causes accidentals to be printed at every note instead of
941 ;; remembered for the duration of a measure.
942 ;; accidentals not being remembered, causing accidentals always to
943 ;; be typeset relative to the time signature
945 ((equal? style 'forget)
946 (set-accidentals-properties '()
947 '(Staff (same-octave . -1))
949 ;; Do not reset the key at the start of a measure. Accidentals will be
950 ;; printed only once and are in effect until overridden, possibly many
952 ((equal? style 'no-reset)
953 (set-accidentals-properties '()
954 '(Staff (same-octave . #t))
958 (ly:warning (_ "unknown accidental style: ~S" style))
959 (make-sequential-music '()))))))
961 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
963 (define-public (skip-of-length mus)
964 "Create a skip of exactly the same length as MUS."
968 'duration (ly:make-duration 0 0))))
970 (make-event-chord (list (ly:music-compress skip (ly:music-length mus))))))
972 (define-public (mmrest-of-length mus)
973 "Create a mmrest of exactly the same length as MUS."
976 (make-multi-measure-rest
977 (ly:make-duration 0 0) '())))
978 (ly:music-compress skip (ly:music-length mus))
981 (define-public (pitch-of-note event-chord)
984 ((evs (filter (lambda (x) (memq 'note-event (ly:music-property x 'types)))
985 (ly:music-property event-chord 'elements))))
988 (ly:music-property (car evs) 'pitch)