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)
189 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
191 (define-public (shift-one-duration-log music shift dot)
192 " add SHIFT to duration-log of 'duration in music and optionally
193 a dot to any note encountered. This scales the music up by a factor
194 2^shift * (2 - (1/2)^dot)"
195 (let ((d (ly:music-property music 'duration)))
197 (let* ((cp (ly:duration-factor d))
198 (nd (ly:make-duration (+ shift (ly:duration-log d))
199 (+ dot (ly:duration-dot-count d))
202 (set! (ly:music-property music 'duration) nd)))
205 (define-public (shift-duration-log music shift dot)
206 (music-map (lambda (x) (shift-one-duration-log x shift dot))
209 (define-public (make-repeat name times main alts)
210 "create a repeat music expression, with all properties initialized properly"
211 (let ((talts (if (< times (length alts))
213 (ly:warning (_ "More alternatives than repeats. Junking excess alternatives"))
216 (r (make-repeated-music name)))
217 (set! (ly:music-property r 'element) main)
218 (set! (ly:music-property r 'repeat-count) (max times 1))
219 (set! (ly:music-property r 'elements) talts)
220 (if (equal? name "tremolo")
221 (let* ((dot? (zero? (modulo times 3)))
224 (quotient (* times 2) 3)
226 (shift (- (ly:intlog2 mult))))
228 (if (memq 'sequential-music (ly:music-property main 'types))
229 ;; \repeat "tremolo" { c4 d4 }
230 (let ((children (length (ly:music-property main 'elements))))
232 ;; fixme: should be more generic.
233 (if (and (not (= children 2))
234 (not (= children 1)))
235 (ly:warning (_ "expecting 2 elements for chord tremolo, found ~a") children))
236 (ly:music-compress r (ly:make-moment 1 children))
237 (shift-duration-log r
238 (if (= children 2) (1- shift) shift)
240 ;; \repeat "tremolo" c4
241 (shift-duration-log r shift dots)))
244 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
247 (define-public (note-to-cluster music)
248 "Replace NoteEvents by ClusterNoteEvents."
249 (if (eq? (ly:music-property music 'name) 'NoteEvent)
250 (make-music 'ClusterNoteEvent
251 'pitch (ly:music-property music 'pitch)
252 'duration (ly:music-property music 'duration))
255 (define-public (notes-to-clusters music)
256 (music-map note-to-cluster music))
258 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
261 (define-public (unfold-repeats music)
263 This function replaces all repeats with unfold repeats. "
265 (let ((es (ly:music-property music 'elements))
266 (e (ly:music-property music 'element))
268 (if (memq 'repeated-music (ly:music-property music 'types))
270 ((props (ly:music-mutable-properties music))
271 (old-name (ly:music-property music 'name))
272 (flattened (flatten-alist props)))
274 (set! music (apply make-music (cons 'UnfoldedRepeatedMusic
277 (if (equal? old-name 'TremoloRepeatedMusic)
278 (let* ((seq-arg? (memq 'sequential-music
279 (ly:music-property e 'types)))
280 (count (ly:music-property music 'repeat-count))
281 (dot-shift (if (= 0 (remainder count 3))
285 (set! count (* 2 (quotient count 3))))
287 (shift-duration-log music (+ (if seq-arg? 1 0)
288 (ly:intlog2 count)) dot-shift)
291 (ly:music-compress e (ly:make-moment (length (ly:music-property
292 e 'elements)) 1)))))))
296 (set! (ly:music-property music 'elements)
297 (map unfold-repeats es)))
299 (set! (ly:music-property music 'element)
303 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
304 ;; property setting music objs.
306 (define-public (make-grob-property-set grob gprop val)
307 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
308 i.e. this is not an override"
309 (make-music 'OverrideProperty
315 (define-public (make-grob-property-override grob gprop val)
316 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
317 i.e. this is not an override"
318 (make-music 'OverrideProperty
323 (define-public (make-grob-property-revert grob gprop)
324 "Revert the grob property GPROP for GROB."
325 (make-music 'RevertProperty
327 'grob-property gprop))
329 (define direction-polyphonic-grobs
330 '(Stem Tie Rest Slur PhrasingSlur Script TextScript Dots DotColumn Fingering))
332 (define-safe-public (make-voice-props-set n)
333 (make-sequential-music
335 (map (lambda (x) (make-grob-property-set x 'direction
337 direction-polyphonic-grobs)
339 (make-grob-property-set 'NoteColumn 'horizontal-shift (quotient n 2))
340 (make-grob-property-set 'MultiMeasureRest 'staff-position (if (odd? n) -4 4))))))
342 (define-safe-public (make-voice-props-revert)
343 (make-sequential-music
345 (map (lambda (x) (make-grob-property-revert x 'direction))
346 direction-polyphonic-grobs)
347 (list (make-grob-property-revert 'NoteColumn 'horizontal-shift))
348 (list (make-grob-property-revert 'MultiMeasureRest 'staff-position)))))
351 (define-safe-public (context-spec-music m context #:optional id)
352 "Add \\context CONTEXT = ID to M. "
353 (let ((cm (make-music 'ContextSpeccedMusic
355 'context-type context)))
357 (set! (ly:music-property cm 'context-id) id))
360 (define-public (descend-to-context m context)
361 "Like context-spec-music, but only descending. "
362 (let ((cm (context-spec-music m context)))
363 (ly:music-set-property! cm 'descend-only #t)
366 (define-public (make-non-relative-music mus)
367 (make-music 'UnrelativableMusic
370 (define-public (make-apply-context func)
371 (make-music 'ApplyContext
374 (define-public (make-sequential-music elts)
375 (make-music 'SequentialMusic
378 (define-public (make-simultaneous-music elts)
379 (make-music 'SimultaneousMusic
382 (define-safe-public (make-event-chord elts)
383 (make-music 'EventChord
386 (define-public (make-skip-music dur)
387 (make-music 'SkipMusic
390 (define-public (make-grace-music music)
391 (make-music 'GraceMusic
397 (define-public (make-multi-measure-rest duration location)
398 (make-music 'MultiMeasureRestMusic
402 (define-public (make-property-set sym val)
403 (make-music 'PropertySet
407 (define-public (make-property-unset sym)
408 (make-music 'PropertyUnset
411 (define-public (make-ottava-set octavation)
412 (let ((m (make-music 'ApplyContext)))
413 (define (ottava-modify context)
414 "Either reset middleCPosition to the stored original, or remember
415 old middleCPosition, add OCTAVATION to middleCPosition, and set
416 OTTAVATION to `8va', or whatever appropriate."
417 (if (number? (ly:context-property context 'middleCPosition))
419 (let ((where (ly:context-property-where-defined context 'middleCPosition))
420 (oc0 (ly:context-property context 'originalCentralCPosition)))
421 (ly:context-set-property! context 'middleCPosition oc0)
422 (ly:context-unset-property where 'originalCentralCPosition)
423 (ly:context-unset-property where 'ottavation))
424 (let* ((where (ly:context-property-where-defined context 'middleCPosition))
425 (c0 (ly:context-property context 'middleCPosition))
426 (new-c0 (+ c0 (* -7 octavation)))
427 (string (cdr (assoc octavation '((2 . "15ma")
432 (ly:context-set-property! context 'middleCPosition new-c0)
433 (ly:context-set-property! context 'originalCentralCPosition c0)
434 (ly:context-set-property! context 'ottavation string)))))
435 (set! (ly:music-property m 'procedure) ottava-modify)
436 (context-spec-music m 'Staff)))
438 (define-public (set-octavation ottavation)
439 (ly:export (make-ottava-set ottavation)))
441 (define-public (make-time-signature-set num den . rest)
442 "Set properties for time signature NUM/DEN. Rest can contain a list
445 (define (standard-beat-grouping num den)
447 "Some standard subdivisions for time signatures."
449 ((key (cons num den))
450 (entry (assoc key '(((6 . 8) . (3 3))
453 ((12 . 8) . (3 3 3 3))
461 (let* ((set1 (make-property-set 'timeSignatureFraction (cons num den)))
462 (beat (ly:make-moment 1 den))
463 (len (ly:make-moment num den))
464 (set2 (make-property-set 'beatLength beat))
465 (set3 (make-property-set 'measureLength len))
466 (set4 (make-property-set 'beatGrouping (if (pair? rest)
468 (standard-beat-grouping num den))))
469 (basic (list set1 set2 set3 set4)))
471 (context-spec-music (make-sequential-music basic) 'Timing) 'Score)))
473 (define-public (make-mark-set label)
474 "Make the music for the \\mark command."
475 (let* ((set (if (integer? label)
476 (context-spec-music (make-property-set 'rehearsalMark label)
479 (ev (make-music 'MarkEvent))
480 (ch (make-event-chord (list ev))))
482 (make-sequential-music (list set ch))
484 (set! (ly:music-property ev 'label) label)
487 (define-public (set-time-signature num den . rest)
488 (ly:export (apply make-time-signature-set `(,num ,den . ,rest))))
490 (define-safe-public (make-articulation name)
491 (make-music 'ArticulationEvent
492 'articulation-type name))
494 (define-public (make-lyric-event string duration)
495 (make-music 'LyricEvent
499 (define-safe-public (make-span-event type spandir)
501 'span-direction spandir))
503 (define-public (set-mus-properties! m alist)
504 "Set all of ALIST as properties of M."
507 (set! (ly:music-property m (caar alist)) (cdar alist))
508 (set-mus-properties! m (cdr alist)))))
510 (define-public (music-separator? m)
512 (let ((ts (ly:music-property m 'types)))
513 (memq 'separator ts)))
515 ;;; splitting chords into voices.
516 (define (voicify-list lst number)
517 "Make a list of Musics.
519 voicify-list :: [ [Music ] ] -> number -> [Music]
520 LST is a list music-lists.
522 NUMBER is 0-base, i.e. Voice=1 (upstems) has number 0.
526 (cons (context-spec-music
527 (make-sequential-music
528 (list (make-voice-props-set number)
529 (make-simultaneous-music (car lst))))
530 'Voice (number->string (1+ number)))
531 (voicify-list (cdr lst) (1+ number)))))
533 (define (voicify-chord ch)
534 "Split the parts of a chord into different Voices using separator"
535 (let ((es (ly:music-property ch 'elements)))
536 (set! (ly:music-property ch 'elements)
537 (voicify-list (split-list-by-separator es music-separator?) 0))
540 (define-public (voicify-music m)
541 "Recursively split chords that are separated with \\ "
542 (if (not (ly:music? m))
543 (ly:error (_ "music expected: ~S") m))
544 (let ((es (ly:music-property m 'elements))
545 (e (ly:music-property m 'element)))
548 (set! (ly:music-property m 'elements) (map voicify-music es)))
550 (set! (ly:music-property m 'element) (voicify-music e)))
551 (if (and (equal? (ly:music-property m 'name) 'SimultaneousMusic)
552 (reduce (lambda (x y ) (or x y)) #f (map music-separator? es)))
553 (set! m (context-spec-music (voicify-chord m) 'Staff)))
556 (define-public (empty-music)
557 (ly:export (make-music 'Music)))
560 ; Make a function that checks score element for being of a specific type.
561 (define-public (make-type-checker symbol)
564 ;;(eq? #t (ly:grob-property elt symbol))
565 (not (eq? #f (memq symbol (ly:grob-property elt 'interfaces))))))
567 (define-public ((outputproperty-compatibility func sym val) grob g-context ao-context)
569 (set! (ly:grob-property grob sym) val)))
572 (define-public ((set-output-property grob-name symbol val) grob grob-c context)
575 \\applyoutput #(set-output-property 'Clef 'extra-offset '(0 . 1))
578 (let ((meta (ly:grob-property grob 'meta)))
579 (if (equal? (cdr (assoc 'name meta)) grob-name)
580 (set! (ly:grob-property grob symbol) val))))
584 (define-public (smart-bar-check n)
585 "Make a bar check that checks for a specific bar number.
587 (let ((m (make-music 'ApplyContext)))
589 (let* ((bn (ly:context-property tr 'currentBarNumber)))
593 ;; FIXME: uncomprehensable message
594 (_ "Bar check failed. Expect to be at ~a, instead at ~a")
596 (set! (ly:music-property m 'procedure) checker)
600 (define-public (skip->rest mus)
602 "Replace MUS by RestEvent of the same duration if it is a
603 SkipEvent. Useful for extracting parts from crowded scores"
605 (if (equal? (ly:music-property mus 'name) 'SkipEvent)
606 (make-music 'RestEvent 'duration (ly:music-property mus 'duration))
610 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
611 ;; warn for bare chords at start.
613 (define (has-request-chord elts)
614 (reduce (lambda (x y) (or x y)) #f
616 (equal? (ly:music-property x 'name) 'RequestChord))
619 (define-public (ly:music-message music msg)
620 (let ((ip (ly:music-property music 'origin)))
621 (if (ly:input-location? ip)
622 (ly:input-message ip msg)
625 (define (check-start-chords music)
626 "Check music expression for a Simultaneous_music containing notes\n(ie. Request_chords),
627 without context specification. Called from parser."
628 (let ((es (ly:music-property music 'elements))
629 (e (ly:music-property music 'element))
630 (name (ly:music-property music 'name)))
631 (cond ((equal? name "Context_specced_music") #t)
632 ((equal? name "Simultaneous_music")
633 (if (has-request-chord es)
634 (ly:music-message music "Starting score with a chord.\nInsert an explicit \\context before chord")
635 (map check-start-chords es)))
636 ((equal? name "SequentialMusic")
638 (check-start-chords (car es))))
639 (else (if (ly:music? e) (check-start-chords e)))))
644 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
646 ;; setting stuff for grace context.
649 (define (vector-extend v x)
650 "Make a new vector consisting of V, with X added to the end."
651 (let* ((n (vector-length v))
652 (nv (make-vector (+ n 1) '())))
653 (vector-move-left! v 0 n nv 0)
657 (define (vector-map f v)
658 "Map F over V. This function returns nothing."
659 (do ((n (vector-length v))
662 (f (vector-ref v i))))
664 (define (vector-reverse-map f v)
665 "Map F over V, N to 0 order. This function returns nothing."
666 (do ((i (- (vector-length v) 1) (- i 1)))
668 (f (vector-ref v i))))
670 ;; TODO: make a remove-grace-property too.
671 (define-public (add-grace-property context-name grob sym val)
672 "Set SYM=VAL for GROB in CONTEXT-NAME. "
673 (define (set-prop context)
674 (let* ((where (ly:context-property-where-defined context 'graceSettings))
675 (current (ly:context-property where 'graceSettings))
676 (new-settings (append current
677 (list (list context-name grob sym val)))))
678 (ly:context-set-property! where 'graceSettings new-settings)))
679 (ly:export (context-spec-music (make-apply-context set-prop) 'Voice)))
683 (defmacro-public def-grace-function (start stop)
684 `(define-music-function (parser location music) (ly:music?)
685 (make-music 'GraceMusic
687 'element (make-music 'SequentialMusic
688 'elements (list (ly:music-deep-copy ,start)
690 (ly:music-deep-copy ,stop))))))
692 (defmacro-public define-music-function (args signature . body)
693 "Helper macro for `ly:make-music-function'.
695 (define-music-function (parser location arg1 arg2 ...) (arg1-type? arg2-type? ...)
698 `(ly:make-music-function (list ,@signature)
703 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
705 (define-public (cue-substitute quote-music)
706 "Must happen after quote-substitute."
708 (if (vector? (ly:music-property quote-music 'quoted-events))
709 (let* ((dir (ly:music-property quote-music 'quoted-voice-direction))
710 (main-voice (if (eq? 1 dir) 1 0))
711 (cue-voice (if (eq? 1 dir) 0 1))
712 (main-music (ly:music-property quote-music 'element))
713 (return-value quote-music))
715 (if (or (eq? 1 dir) (eq? -1 dir))
717 ;; if we have stem dirs, change both quoted and main music
718 ;; to have opposite stems.
722 ;; cannot context-spec Quote-music, since context
723 ;; for the quotes is determined in the iterator.
724 (make-sequential-music
726 (context-spec-music (make-voice-props-set cue-voice) 'CueVoice "cue")
728 (context-spec-music (make-voice-props-revert) 'CueVoice "cue"))))
730 (make-sequential-music
732 (make-voice-props-set main-voice)
734 (make-voice-props-revert))))
735 (set! (ly:music-property quote-music 'element) main-music)))
740 (define-public ((quote-substitute quote-tab) music)
741 (let* ((quoted-name (ly:music-property music 'quoted-music-name))
742 (quoted-vector (if (string? quoted-name)
743 (hash-ref quote-tab quoted-name #f)
747 (if (string? quoted-name)
748 (if (vector? quoted-vector)
750 (set! (ly:music-property music 'quoted-events) quoted-vector)
751 (set! (ly:music-property music 'iterator-ctor)
752 ly:quote-iterator::constructor))
753 (ly:warning (_ "cannot find quoted music: `~S'" quoted-name))))
757 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
758 ;; switch it on here, so parsing and init isn't checked (too slow!)
760 ;; automatic music transformations.
762 (define (switch-on-debugging m)
763 (if (defined? 'set-debug-cell-accesses!)
764 (set-debug-cell-accesses! 15000))
767 (define (music-check-error music)
770 (if (and (ly:music? m)
771 (eq? (ly:music-property m 'error-found) #t))
774 (for-each signal (ly:music-property music 'elements))
775 (signal (ly:music-property music 'element))
778 (set! (ly:music-property music 'error-found) #t))
781 (define (precompute-music-length music)
782 (set! (ly:music-property music 'length)
783 (ly:music-length music))
786 (define (skip-to-last music parser)
790 << { \\set skipTypesetting = ##t
791 LENGTHOF(\\showLastLength)
792 \\set skipTypesetting = ##t }
798 ((show-last (ly:parser-lookup parser 'showLastLength)))
800 (if (ly:music? show-last)
802 ((orig-length (ly:music-length music))
803 (skip-length (ly:moment-sub orig-length (ly:music-length show-last))))
805 (make-simultaneous-music
807 (make-sequential-music
809 (context-spec-music (make-property-set 'skipTypesetting #t)
811 (make-music 'SkipMusic 'duration
814 (ly:moment-main-numerator skip-length)
815 (ly:moment-main-denominator skip-length)))
816 (context-spec-music (make-property-set 'skipTypesetting #f)
822 (define-public toplevel-music-functions
824 (lambda (music parser) (voicify-music music))
825 (lambda (x parser) (music-map music-check-error x))
826 (lambda (x parser) (music-map precompute-music-length x))
827 (lambda (music parser)
829 (music-map (quote-substitute (ly:parser-lookup parser 'musicQuotes)) music))
831 ;; switch-on-debugging
832 (lambda (x parser) (music-map cue-substitute x))
835 (skip-to-last x parser)
842 (define (apply-durations lyric-music durations)
843 (define (apply-duration music)
844 (if (and (not (equal? (ly:music-length music) ZERO-MOMENT))
845 (ly:duration? (ly:music-property music 'duration)))
847 (set! (ly:music-property music 'duration) (car durations))
848 (set! durations (cdr durations)))))
850 (music-map apply-duration lyric-music))
853 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
856 (define-public (set-accidentals-properties extra-natural
860 (make-sequential-music
861 (append (if (boolean? extra-natural)
862 (list (make-property-set 'extraNatural extra-natural))
864 (list (make-property-set 'autoAccidentals auto-accs)
865 (make-property-set 'autoCautionaries auto-cauts))))
868 (define-public (set-accidental-style style . rest)
869 "Set accidental style to STYLE. Optionally takes a context argument,
870 e.g. 'Staff or 'Voice. The context defaults to Voice, except for piano styles, which
871 use GrandStaff as a context. "
872 (let ((context (if (pair? rest)
874 (pcontext (if (pair? rest)
875 (car rest) 'GrandStaff)))
878 ;; accidentals as they were common in the 18th century.
879 ((equal? style 'default)
880 (set-accidentals-properties #t '(Staff (same-octave . 0))
882 ;; accidentals from one voice do NOT get cancelled in other voices
883 ((equal? style 'voice)
884 (set-accidentals-properties #t '(Voice (same-octave . 0))
886 ;; accidentals as suggested by Kurt Stone, Music Notation in the 20th century.
887 ;; This includes all the default accidentals, but accidentals also needs cancelling
888 ;; in other octaves and in the next measure.
889 ((equal? style 'modern)
890 (set-accidentals-properties #f '(Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
892 ;; the accidentals that Stone adds to the old standard as cautionaries
893 ((equal? style 'modern-cautionary)
894 (set-accidentals-properties #f '(Staff (same-octave . 0))
895 '(Staff (any-octave . 0) (same-octave . 1))
897 ;; Multivoice accidentals to be read both by musicians playing one voice
898 ;; and musicians playing all voices.
899 ;; Accidentals are typeset for each voice, but they ARE cancelled across voices.
900 ((equal? style 'modern-voice)
901 (set-accidentals-properties #f
902 '(Voice (same-octave . 0) (any-octave . 0) (same-octave . 1)
903 Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
906 ;; same as modernVoiceAccidental eccept that all special accidentals are typeset
908 ((equal? style 'modern-voice-cautionary)
909 (set-accidentals-properties #f
910 '(Voice (same-octave . 0))
911 '(Voice (any-octave . 0) (same-octave . 1)
912 Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
914 ;; stone's suggestions for accidentals on grand staff.
915 ;; Accidentals are cancelled across the staves in the same grand staff as well
916 ((equal? style 'piano)
917 (set-accidentals-properties #f
918 '(Staff (same-octave . 0)
919 (any-octave . 0) (same-octave . 1)
920 GrandStaff (any-octave . 0) (same-octave . 1))
923 ((equal? style 'piano-cautionary)
924 (set-accidentals-properties #f
925 '(Staff (same-octave . 0))
926 '(Staff (any-octave . 0) (same-octave . 1)
927 GrandStaff (any-octave . 0) (same-octave . 1))
929 ;; do not set localKeySignature when a note alterated differently from
930 ;; localKeySignature is found.
931 ;; Causes accidentals to be printed at every note instead of
932 ;; remembered for the duration of a measure.
933 ;; accidentals not being remembered, causing accidentals always to be typeset relative to the time signature
934 ((equal? style 'forget)
935 (set-accidentals-properties '()
936 '(Staff (same-octave . -1))
938 ;; Do not reset the key at the start of a measure. Accidentals will be
939 ;; printed only once and are in effect until overridden, possibly many
941 ((equal? style 'no-reset)
942 (set-accidentals-properties '()
943 '(Staff (same-octave . #t))
947 (ly:warning (_ "unknown accidental style: ~S" style))
948 (make-sequential-music '()))))))
950 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
952 (define-public (skip-of-length mus)
953 "Create a skip of exactly the same length as MUS."
957 'duration (ly:make-duration 0 0))))
959 (make-event-chord (list (ly:music-compress skip (ly:music-length mus))))))
961 (define-public (mmrest-of-length mus)
962 "Create a mmrest of exactly the same length as MUS."
965 (make-multi-measure-rest
966 (ly:make-duration 0 0) '())))
967 (ly:music-compress skip (ly:music-length mus))
970 (define-public (pitch-of-note event-chord)
973 ((evs (filter (lambda (x) (memq 'note-event (ly:music-property x 'types)))
974 (ly:music-property event-chord 'elements))))
977 (ly:music-property (car evs) 'pitch)