1 ;;;; This file is part of LilyPond, the GNU music typesetter.
3 ;;;; Copyright (C) 1998--2010 Jan Nieuwenhuizen <janneke@gnu.org>
4 ;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
6 ;;;; LilyPond is free software: you can redistribute it and/or modify
7 ;;;; it under the terms of the GNU General Public License as published by
8 ;;;; the Free Software Foundation, either version 3 of the License, or
9 ;;;; (at your option) any later version.
11 ;;;; LilyPond is distributed in the hope that it will be useful,
12 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;;;; GNU General Public License for more details.
16 ;;;; You should have received a copy of the GNU General Public License
17 ;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
19 ;; (use-modules (ice-9 optargs))
21 ;;; ly:music-property with setter
22 ;;; (ly:music-property my-music 'elements)
23 ;;; ==> the 'elements property
24 ;;; (set! (ly:music-property my-music 'elements) value)
25 ;;; ==> set the 'elements property and return it
26 (define-public ly:music-property
27 (make-procedure-with-setter ly:music-property
28 ly:music-set-property!))
30 (define-safe-public (music-is-of-type? mus type)
31 "Does @code{mus} belong to the music class @code{type}?"
32 (memq type (ly:music-property mus 'types)))
35 (define-public ly:grob-property
36 (make-procedure-with-setter ly:grob-property
37 ly:grob-set-property!))
39 (define-public ly:grob-object
40 (make-procedure-with-setter ly:grob-object
43 (define-public ly:grob-parent
44 (make-procedure-with-setter ly:grob-parent
47 (define-public ly:prob-property
48 (make-procedure-with-setter ly:prob-property
49 ly:prob-set-property!))
51 (define-public (music-map function music)
52 "Apply @var{function} to @var{music} and all of the music it contains.
54 First it recurses over the children, then the function is applied to MUSIC.
56 (let ((es (ly:music-property music 'elements))
57 (e (ly:music-property music 'element)))
58 (set! (ly:music-property music 'elements)
59 (map (lambda (y) (music-map function y)) es))
61 (set! (ly:music-property music 'element)
62 (music-map function e)))
65 (define-public (music-filter pred? music)
66 "Filter out music expressions that do not satisfy PRED."
68 (define (inner-music-filter pred? music)
70 (let* ((es (ly:music-property music 'elements))
71 (e (ly:music-property music 'element))
72 (as (ly:music-property music 'articulations))
73 (filtered-as (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) as)))
74 (filtered-e (if (ly:music? e)
75 (inner-music-filter pred? e)
77 (filtered-es (filter ly:music? (map (lambda (y) (inner-music-filter pred? y)) es))))
78 (set! (ly:music-property music 'element) filtered-e)
79 (set! (ly:music-property music 'elements) filtered-es)
80 (set! (ly:music-property music 'articulations) filtered-as)
81 ;; if filtering emptied the expression, we remove it completely.
82 (if (or (not (pred? music))
83 (and (eq? filtered-es '()) (not (ly:music? e))
84 (or (not (eq? es '()))
89 (set! music (inner-music-filter pred? music))
92 (make-music 'Music))) ;must return music.
94 (define-public (display-music music)
95 "Display music, not done with music-map for clarity of presentation."
99 (let ((es (ly:music-property music 'elements))
100 (e (ly:music-property music 'element)))
101 (display (ly:music-mutable-properties music))
103 (begin (display "\nElements: {\n")
104 (map display-music es)
114 ;;; A scheme music pretty printer
116 (define (markup-expression->make-markup markup-expression)
117 "Transform `markup-expression' into an equivalent, hopefuly readable, scheme expression.
119 \\markup \\bold \\italic hello
121 (markup #:line (#:bold (#:italic (#:simple \"hello\"))))"
122 (define (proc->command-keyword proc)
123 "Return a keyword, eg. `#:bold', from the `proc' function, eg. #<procedure bold-markup (layout props arg)>"
124 (let ((cmd-markup (symbol->string (procedure-name proc))))
125 (symbol->keyword (string->symbol (substring cmd-markup 0 (- (string-length cmd-markup)
126 (string-length "-markup")))))))
127 (define (transform-arg arg)
128 (cond ((and (pair? arg) (markup? (car arg))) ;; a markup list
129 (apply append (map inner-markup->make-markup arg)))
130 ((and (not (string? arg)) (markup? arg)) ;; a markup
131 (inner-markup->make-markup arg))
134 (define (inner-markup->make-markup mrkup)
137 (let ((cmd (proc->command-keyword (car mrkup)))
138 (args (map transform-arg (cdr mrkup))))
141 (if (string? markup-expression)
143 `(markup ,@(inner-markup->make-markup markup-expression))))
145 (define-public (music->make-music obj)
146 "Generate a expression that, once evaluated, may return an object equivalent to `obj',
147 that is, for a music expression, a (make-music ...) form."
148 (cond (;; markup expression
150 (markup-expression->make-markup obj))
154 ',(ly:music-property obj 'name)
155 ,@(apply append (map (lambda (prop)
157 ,(music->make-music (cdr prop))))
158 (remove (lambda (prop)
159 (eqv? (car prop) 'origin))
160 (ly:music-mutable-properties obj))))))
163 `(ly:make-moment ,(ly:moment-main-numerator obj)
164 ,(ly:moment-main-denominator obj)
165 ,(ly:moment-grace-numerator obj)
166 ,(ly:moment-grace-denominator obj)))
169 `(ly:make-duration ,(ly:duration-log obj)
170 ,(ly:duration-dot-count obj)
171 ,(car (ly:duration-factor obj))
172 ,(cdr (ly:duration-factor obj))))
175 `(ly:make-pitch ,(ly:pitch-octave obj)
176 ,(ly:pitch-notename obj)
177 ,(ly:pitch-alteration obj)))
180 (or (procedure-name obj) obj))
181 (;; a symbol (avoid having an unquoted symbol)
184 (;; an empty list (avoid having an unquoted empty list)
189 `(list ,@(map music->make-music obj)))
192 `(cons ,(music->make-music (car obj))
193 ,(music->make-music (cdr obj))))
197 (use-modules (ice-9 pretty-print))
198 (define*-public (display-scheme-music obj #:optional (port (current-output-port)))
199 "Displays `obj', typically a music expression, in a friendly fashion,
200 which often can be read back in order to generate an equivalent expression.
204 (pretty-print (music->make-music obj) port)
209 ;;; Scheme music expression --> Lily-syntax-using string translator
211 (use-modules (srfi srfi-39)
214 (define*-public (display-lily-music expr parser #:key force-duration)
215 "Display the music expression using LilyPond syntax"
216 (memoize-clef-names supported-clefs)
217 (parameterize ((*indent* 0)
218 (*previous-duration* (ly:make-duration 2))
219 (*force-duration* force-duration))
220 (display (music->lily-string expr parser))
223 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
225 (define-public (shift-one-duration-log music shift dot)
226 " add SHIFT to duration-log of 'duration in music and optionally
227 a dot to any note encountered. This scales the music up by a factor
228 2^shift * (2 - (1/2)^dot)"
229 (let ((d (ly:music-property music 'duration)))
231 (let* ((cp (ly:duration-factor d))
232 (nd (ly:make-duration (+ shift (ly:duration-log d))
233 (+ dot (ly:duration-dot-count d))
236 (set! (ly:music-property music 'duration) nd)))
239 (define-public (shift-duration-log music shift dot)
240 (music-map (lambda (x) (shift-one-duration-log x shift dot))
243 (define-public (make-repeat name times main alts)
244 "create a repeat music expression, with all properties initialized properly"
245 (define (first-note-duration music)
246 "Finds the duration of the first NoteEvent by searching depth-first
248 (if (memq 'note-event (ly:music-property music 'types))
249 (ly:music-property music 'duration)
250 (let loop ((elts (if (ly:music? (ly:music-property music 'element))
251 (list (ly:music-property music 'element))
252 (ly:music-property music 'elements))))
254 (let ((dur (first-note-duration (car elts))))
255 (if (ly:duration? dur)
257 (loop (cdr elts))))))))
259 (let ((talts (if (< times (length alts))
261 (ly:warning (_ "More alternatives than repeats. Junking excess alternatives"))
264 (r (make-repeated-music name)))
265 (set! (ly:music-property r 'element) main)
266 (set! (ly:music-property r 'repeat-count) (max times 1))
267 (set! (ly:music-property r 'elements) talts)
268 (if (and (equal? name "tremolo") (> (length (ly:music-property main 'elements)) 0))
269 ;; This works for single-note and multi-note tremolos!
270 (let* ((children (length (ly:music-property main 'elements)))
271 ;; # of dots is equal to the 1 in bitwise representation (minus 1)!
272 (dots (1- (logcount (* times children))))
273 ;; The remaining missing multiplicator to scale the notes by
275 (mult (/ (* times children (ash 1 dots)) (1- (ash 2 dots))))
276 (shift (- (ly:intlog2 (floor mult))))
277 (note-duration (first-note-duration r))
278 (duration-log (if (ly:duration? note-duration)
279 (ly:duration-log note-duration)
281 (tremolo-type (ash 1 duration-log)))
282 (set! (ly:music-property r 'tremolo-type) tremolo-type)
283 (if (not (integer? mult))
284 (ly:warning (_ "invalid tremolo repeat count: ~a") times))
285 ;; \repeat tremolo n c4
286 ;; Adjust the time of the notes
287 (ly:music-compress r (ly:make-moment 1 children))
288 ;; Adjust the displayed note durations
289 (shift-duration-log r shift dots))
292 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
295 (define-public (note-to-cluster music)
296 "Replace NoteEvents by ClusterNoteEvents."
297 (if (eq? (ly:music-property music 'name) 'NoteEvent)
298 (make-music 'ClusterNoteEvent
299 'pitch (ly:music-property music 'pitch)
300 'duration (ly:music-property music 'duration))
303 (define-public (notes-to-clusters music)
304 (music-map note-to-cluster music))
306 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
309 (define-public (unfold-repeats music)
310 "This function replaces all repeats with unfolded repeats."
312 (let ((es (ly:music-property music 'elements))
313 (e (ly:music-property music 'element)))
315 (if (memq 'repeated-music (ly:music-property music 'types))
316 (let* ((props (ly:music-mutable-properties music))
317 (old-name (ly:music-property music 'name))
318 (flattened (flatten-alist props)))
320 (set! music (apply make-music (cons 'UnfoldedRepeatedMusic
323 (if (equal? old-name 'TremoloRepeatedMusic)
324 (let* ((seq-arg? (memq 'sequential-music
325 (ly:music-property e 'types)))
326 (count (ly:music-property music 'repeat-count))
327 (dot-shift (if (= 0 (remainder count 3))
329 (child-count (if seq-arg?
330 (length (ly:music-property e 'elements))
334 (set! count (* 2 (quotient count 3))))
336 (shift-duration-log music (+ (if (= 2 child-count)
338 (ly:intlog2 count)) dot-shift)
341 (ly:music-compress e (ly:make-moment child-count 1)))))))
344 (set! (ly:music-property music 'elements)
345 (map unfold-repeats es)))
347 (set! (ly:music-property music 'element)
351 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
352 ;; property setting music objs.
354 (define-public (make-grob-property-set grob gprop val)
355 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
356 i.e. this is not an override"
357 (make-music 'OverrideProperty
363 (define-public (make-grob-property-override grob gprop val)
364 "Make a Music expression that overrides GPROP to VAL in GROB."
365 (make-music 'OverrideProperty
370 (define-public (make-grob-property-revert grob gprop)
371 "Revert the grob property GPROP for GROB."
372 (make-music 'RevertProperty
374 'grob-property gprop))
376 (define direction-polyphonic-grobs
390 (define-safe-public (make-voice-props-set n)
391 (make-sequential-music
393 (map (lambda (x) (make-grob-property-set x 'direction
395 direction-polyphonic-grobs)
397 (make-property-set 'graceSettings
398 ;; TODO: take this from voicedGraceSettings or similar.
399 '((Voice Stem font-size -3)
400 (Voice NoteHead font-size -3)
401 (Voice TabNoteHead font-size -4)
402 (Voice Dots font-size -3)
403 (Voice Stem length-fraction 0.8)
404 (Voice Stem no-stem-extend #t)
405 (Voice Beam beam-thickness 0.384)
406 (Voice Beam length-fraction 0.8)
407 (Voice Accidental font-size -4)
408 (Voice AccidentalCautionary font-size -4)
409 (Voice Script font-size -3)
410 (Voice Fingering font-size -8)
411 (Voice StringNumber font-size -8)))
413 (make-grob-property-set 'NoteColumn 'horizontal-shift (quotient n 2))
414 (make-grob-property-set 'MultiMeasureRest 'staff-position (if (odd? n) -4 4))))))
416 (define-safe-public (make-voice-props-revert)
417 (make-sequential-music
419 (map (lambda (x) (make-grob-property-revert x 'direction))
420 direction-polyphonic-grobs)
421 (list (make-property-unset 'graceSettings)
422 (make-grob-property-revert 'NoteColumn 'horizontal-shift)
423 (make-grob-property-revert 'MultiMeasureRest 'staff-position)))))
426 (define-safe-public (context-spec-music m context #:optional id)
427 "Add \\context CONTEXT = ID to M. "
428 (let ((cm (make-music 'ContextSpeccedMusic
430 'context-type context)))
432 (set! (ly:music-property cm 'context-id) id))
435 (define-public (descend-to-context m context)
436 "Like context-spec-music, but only descending. "
437 (let ((cm (context-spec-music m context)))
438 (ly:music-set-property! cm 'descend-only #t)
441 (define-public (make-non-relative-music mus)
442 (make-music 'UnrelativableMusic
445 (define-public (make-apply-context func)
446 (make-music 'ApplyContext
449 (define-public (make-sequential-music elts)
450 (make-music 'SequentialMusic
453 (define-public (make-simultaneous-music elts)
454 (make-music 'SimultaneousMusic
457 (define-safe-public (make-event-chord elts)
458 (make-music 'EventChord
461 (define-public (make-skip-music dur)
462 (make-music 'SkipMusic
465 (define-public (make-grace-music music)
466 (make-music 'GraceMusic
472 (define-public (make-multi-measure-rest duration location)
473 (make-music 'MultiMeasureRestMusic
477 (define-public (make-property-set sym val)
478 (make-music 'PropertySet
482 (define-public (make-property-unset sym)
483 (make-music 'PropertyUnset
486 (define-public (make-ottava-set octavation)
487 (let ((m (make-music 'ApplyContext)))
488 (define (ottava-modify context)
489 "Either reset middleCPosition to the stored original, or remember
490 old middleCPosition, add OCTAVATION to middleCPosition, and set
491 OTTAVATION to `8va', or whatever appropriate."
492 (if (number? (ly:context-property context 'middleCOffset))
493 (let ((where (ly:context-property-where-defined context 'middleCOffset)))
494 (ly:context-unset-property where 'middleCOffset)
495 (ly:context-unset-property where 'ottavation)))
497 (let* ((offset (* -7 octavation))
498 (string (assoc-get octavation '((2 . "15ma")
503 (ly:context-set-property! context 'middleCOffset offset)
504 (ly:context-set-property! context 'ottavation string)
505 (ly:set-middle-C! context)))
506 (set! (ly:music-property m 'procedure) ottava-modify)
507 (context-spec-music m 'Staff)))
509 (define-public (set-octavation ottavation)
510 (ly:export (make-ottava-set ottavation)))
512 ;;; Need to keep this definition for \time calls from parser
513 (define-public (make-time-signature-set num den)
514 "Set properties for time signature NUM/DEN."
515 (make-beam-rule-time-signature-set num den '()))
517 ;;; Used for calls that include beat-grouping setting
518 (define-public (set-time-signature num den . rest)
519 "Set properties for time signature @var{num/den}.
520 If @var{rest} is present, it is used to make a default
521 @code{beamSetting} rule."
522 (ly:export (apply make-beam-rule-time-signature-set
523 (list num den rest))))
525 (define-public (make-beam-rule-time-signature-set num den rest)
526 "Implement settings for new time signature. Can be
527 called from either make-time-signature-set (used by \time
528 in parser) or set-time-signature (called from scheme code
529 included in .ly file."
531 (define (make-default-beaming-rule context)
532 (override-property-setting
535 (list (cons num den) 'end)
536 (list (cons '* (car rest)))))
538 (let* ((set1 (make-property-set 'timeSignatureFraction (cons num den)))
539 (beat (ly:make-moment 1 den))
540 (len (ly:make-moment num den))
541 (set2 (make-property-set 'beatLength beat))
542 (set3 (make-property-set 'measureLength len))
546 (list (make-apply-context make-default-beaming-rule))))
547 (output (cons* set1 set2 set3 beaming-rule)))
550 (make-sequential-music output)
554 (define-public (make-mark-set label)
555 "Make the music for the \\mark command."
556 (let* ((set (if (integer? label)
557 (context-spec-music (make-property-set 'rehearsalMark label)
560 (ev (make-music 'MarkEvent))
561 (ch (make-event-chord (list ev))))
563 (make-sequential-music (list set ch))
565 (set! (ly:music-property ev 'label) label)
568 (define-safe-public (make-articulation name)
569 (make-music 'ArticulationEvent
570 'articulation-type name))
572 (define-public (make-lyric-event string duration)
573 (make-music 'LyricEvent
577 (define-safe-public (make-span-event type span-dir)
579 'span-direction span-dir))
581 (define-public (override-head-style heads style)
582 "Override style for @var{heads} to @var{style}."
583 (make-sequential-music
586 (make-grob-property-override h 'style style))
588 (list (make-grob-property-override heads 'style style)))))
590 (define-public (revert-head-style heads)
591 "Revert style for @var{heads}."
592 (make-sequential-music
595 (make-grob-property-revert h 'style))
597 (list (make-grob-property-revert heads 'style)))))
599 (define-public (style-note-heads heads style music)
600 "Set @var{style} for all @var{heads} in @var{music}. Works both
601 inside of and outside of chord construct."
602 ;; are we inside a <...>?
603 (if (eq? (ly:music-property music 'name) 'NoteEvent)
604 ;; yes -> use a tweak
606 (set! (ly:music-property music 'tweaks)
607 (acons 'style style (ly:music-property music 'tweaks)))
609 ;; not in <...>, so use overrides
610 (make-sequential-music
612 (override-head-style heads style)
614 (revert-head-style heads)))))
616 (define-public (set-mus-properties! m alist)
617 "Set all of ALIST as properties of M."
620 (set! (ly:music-property m (caar alist)) (cdar alist))
621 (set-mus-properties! m (cdr alist)))))
623 (define-public (music-separator? m)
625 (let ((ts (ly:music-property m 'types)))
626 (memq 'separator ts)))
628 ;;; splitting chords into voices.
629 (define (voicify-list lst number)
630 "Make a list of Musics.
632 voicify-list :: [ [Music ] ] -> number -> [Music]
633 LST is a list music-lists.
635 NUMBER is 0-base, i.e. Voice=1 (upstems) has number 0.
639 (cons (context-spec-music
640 (make-sequential-music
641 (list (make-voice-props-set number)
642 (make-simultaneous-music (car lst))))
643 'Bottom (number->string (1+ number)))
644 (voicify-list (cdr lst) (1+ number)))))
646 (define (voicify-chord ch)
647 "Split the parts of a chord into different Voices using separator"
648 (let ((es (ly:music-property ch 'elements)))
649 (set! (ly:music-property ch 'elements)
650 (voicify-list (split-list-by-separator es music-separator?) 0))
653 (define-public (voicify-music m)
654 "Recursively split chords that are separated with \\ "
655 (if (not (ly:music? m))
656 (ly:error (_ "music expected: ~S") m))
657 (let ((es (ly:music-property m 'elements))
658 (e (ly:music-property m 'element)))
661 (set! (ly:music-property m 'elements) (map voicify-music es)))
663 (set! (ly:music-property m 'element) (voicify-music e)))
664 (if (and (equal? (ly:music-property m 'name) 'SimultaneousMusic)
665 (reduce (lambda (x y ) (or x y)) #f (map music-separator? es)))
666 (set! m (context-spec-music (voicify-chord m) 'Staff)))
669 (define-public (empty-music)
670 (ly:export (make-music 'Music)))
672 ;; Make a function that checks score element for being of a specific type.
673 (define-public (make-type-checker symbol)
675 (grob::has-interface elt symbol)))
677 (define-public ((outputproperty-compatibility func sym val) grob g-context ao-context)
679 (set! (ly:grob-property grob sym) val)))
682 (define-public ((set-output-property grob-name symbol val) grob grob-c context)
685 \\applyoutput #(set-output-property 'Clef 'extra-offset '(0 . 1))
688 (let ((meta (ly:grob-property grob 'meta)))
689 (if (equal? (assoc-get 'name meta) grob-name)
690 (set! (ly:grob-property grob symbol) val))))
694 (define-public (smart-bar-check n)
695 "Make a bar check that checks for a specific bar number.
697 (let ((m (make-music 'ApplyContext)))
699 (let* ((bn (ly:context-property tr 'currentBarNumber)))
703 ;; FIXME: uncomprehensable message
704 (_ "Bar check failed. Expect to be at ~a, instead at ~a")
706 (set! (ly:music-property m 'procedure) checker)
710 (define-public (skip->rest mus)
712 "Replace MUS by RestEvent of the same duration if it is a
713 SkipEvent. Useful for extracting parts from crowded scores"
715 (if (memq (ly:music-property mus 'name) '(SkipEvent SkipMusic))
716 (make-music 'RestEvent 'duration (ly:music-property mus 'duration))
720 (define-public (music-has-type music type)
721 (memq type (ly:music-property music 'types)))
723 (define-public (music-clone music)
724 (define (alist->args alist acc)
727 (alist->args (cdr alist)
728 (cons (caar alist) (cons (cdar alist) acc)))))
732 (ly:music-property music 'name)
733 (alist->args (ly:music-mutable-properties music) '())))
735 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
736 ;; warn for bare chords at start.
739 (define-public (ly:music-message music msg)
740 (let ((ip (ly:music-property music 'origin)))
741 (if (ly:input-location? ip)
742 (ly:input-message ip msg)
745 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
747 ;; setting stuff for grace context.
750 (define (vector-extend v x)
751 "Make a new vector consisting of V, with X added to the end."
752 (let* ((n (vector-length v))
753 (nv (make-vector (+ n 1) '())))
754 (vector-move-left! v 0 n nv 0)
758 (define (vector-map f v)
759 "Map F over V. This function returns nothing."
760 (do ((n (vector-length v))
763 (f (vector-ref v i))))
765 (define (vector-reverse-map f v)
766 "Map F over V, N to 0 order. This function returns nothing."
767 (do ((i (- (vector-length v) 1) (- i 1)))
769 (f (vector-ref v i))))
771 (define-public (add-grace-property context-name grob sym val)
772 "Set SYM=VAL for GROB in CONTEXT-NAME. "
773 (define (set-prop context)
774 (let* ((where (ly:context-property-where-defined context 'graceSettings))
775 (current (ly:context-property where 'graceSettings))
776 (new-settings (append current
777 (list (list context-name grob sym val)))))
778 (ly:context-set-property! where 'graceSettings new-settings)))
779 (ly:export (context-spec-music (make-apply-context set-prop) 'Voice)))
781 (define-public (remove-grace-property context-name grob sym)
782 "Remove all SYM for GROB in CONTEXT-NAME. "
783 (define (sym-grob-context? property sym grob context-name)
784 (and (eq? (car property) context-name)
785 (eq? (cadr property) grob)
786 (eq? (caddr property) sym)))
787 (define (delete-prop context)
788 (let* ((where (ly:context-property-where-defined context 'graceSettings))
789 (current (ly:context-property where 'graceSettings))
790 (prop-settings (filter
791 (lambda(x) (sym-grob-context? x sym grob context-name))
793 (new-settings current))
795 (set! new-settings (delete x new-settings)))
797 (ly:context-set-property! where 'graceSettings new-settings)))
798 (ly:export (context-spec-music (make-apply-context delete-prop) 'Voice)))
802 (defmacro-public def-grace-function (start stop . docstring)
803 "Helper macro for defining grace music"
804 `(define-music-function (parser location music) (ly:music?)
806 (make-music 'GraceMusic
808 'element (make-music 'SequentialMusic
809 'elements (list (ly:music-deep-copy ,start)
811 (ly:music-deep-copy ,stop))))))
813 (defmacro-public define-music-function (args signature . body)
814 "Helper macro for `ly:make-music-function'.
816 (define-music-function (parser location arg1 arg2 ...) (arg1-type? arg2-type? ...)
819 (if (and (pair? body) (pair? (car body)) (eqv? '_i (caar body)))
820 ;; When the music function definition contains a i10n doc string,
821 ;; (_i "doc string"), keep the literal string only
822 (let ((docstring (cadar body))
824 `(ly:make-music-function (list ,@signature)
828 `(ly:make-music-function (list ,@signature)
833 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
835 (define-public (cue-substitute quote-music)
836 "Must happen after quote-substitute."
838 (if (vector? (ly:music-property quote-music 'quoted-events))
839 (let* ((dir (ly:music-property quote-music 'quoted-voice-direction))
840 (main-voice (if (eq? 1 dir) 1 0))
841 (cue-voice (if (eq? 1 dir) 0 1))
842 (main-music (ly:music-property quote-music 'element))
843 (return-value quote-music))
845 (if (or (eq? 1 dir) (eq? -1 dir))
847 ;; if we have stem dirs, change both quoted and main music
848 ;; to have opposite stems.
852 ;; cannot context-spec Quote-music, since context
853 ;; for the quotes is determined in the iterator.
854 (make-sequential-music
856 (context-spec-music (make-voice-props-set cue-voice) 'CueVoice "cue")
858 (context-spec-music (make-voice-props-revert) 'CueVoice "cue"))))
860 (make-sequential-music
862 (make-voice-props-set main-voice)
864 (make-voice-props-revert))))
865 (set! (ly:music-property quote-music 'element) main-music)))
870 (define-public ((quote-substitute quote-tab) music)
871 (let* ((quoted-name (ly:music-property music 'quoted-music-name))
872 (quoted-vector (if (string? quoted-name)
873 (hash-ref quote-tab quoted-name #f)
877 (if (string? quoted-name)
878 (if (vector? quoted-vector)
880 (set! (ly:music-property music 'quoted-events) quoted-vector)
881 (set! (ly:music-property music 'iterator-ctor)
882 ly:quote-iterator::constructor))
883 (ly:warning (_ "cannot find quoted music: `~S'") quoted-name)))
887 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
888 ;; switch it on here, so parsing and init isn't checked (too slow!)
890 ;; automatic music transformations.
892 (define (switch-on-debugging m)
893 (if (defined? 'set-debug-cell-accesses!)
894 (set-debug-cell-accesses! 15000))
897 (define (music-check-error music)
900 (if (and (ly:music? m)
901 (eq? (ly:music-property m 'error-found) #t))
904 (for-each signal (ly:music-property music 'elements))
905 (signal (ly:music-property music 'element))
908 (set! (ly:music-property music 'error-found) #t))
911 (define (precompute-music-length music)
912 (set! (ly:music-property music 'length)
913 (ly:music-length music))
916 (define-public (make-duration-of-length moment)
917 "Make duration of the given MOMENT length."
918 (ly:make-duration 0 0
919 (ly:moment-main-numerator moment)
920 (ly:moment-main-denominator moment)))
922 (define (skip-this moment)
923 "set skipTypesetting, make SkipMusic of the given MOMENT length,
924 and then unset skipTypesetting."
925 (make-sequential-music
927 (context-spec-music (make-property-set 'skipTypesetting #t)
929 (make-music 'SkipMusic 'duration
930 (make-duration-of-length moment))
931 (context-spec-music (make-property-set 'skipTypesetting #f)
934 (define (unskip-this moment)
935 "unset skipTypesetting, make SkipMusic of the given MOMENT length,
936 and then set skipTypesetting."
937 (make-sequential-music
939 (context-spec-music (make-property-set 'skipTypesetting #f)
941 (make-music 'SkipMusic 'duration
942 (make-duration-of-length moment))
943 (context-spec-music (make-property-set 'skipTypesetting #t)
946 (define (skip-as-needed music parser)
948 << { \\set skipTypesetting = ##f
949 LENGTHOF(\\showFirstLength)
950 \\set skipTypesetting = ##t
951 LENGTHOF(\\showLastLength) }
955 When only showFirstLength is set,
956 the 'length property of the music is
957 overridden to speed up compiling."
959 ((show-last (ly:parser-lookup parser 'showLastLength))
960 (show-first (ly:parser-lookup parser 'showFirstLength)))
963 ;; both properties may be set.
964 ((and (ly:music? show-first) (ly:music? show-last))
966 ((orig-length (ly:music-length music))
967 (skip-length (ly:moment-sub orig-length (ly:music-length show-last)))
968 (begin-length (ly:music-length show-first)))
969 (make-simultaneous-music
971 (make-sequential-music
973 (skip-this skip-length)
974 ;; let's draw a separator between the beginning and the end
975 (context-spec-music (make-property-set 'whichBar "||")
977 (unskip-this begin-length)
980 ;; we may only want to print the last length
981 ((ly:music? show-last)
983 ((orig-length (ly:music-length music))
984 (skip-length (ly:moment-sub orig-length (ly:music-length show-last))))
985 (make-simultaneous-music
987 (skip-this skip-length)
990 ;; we may only want to print the beginning; in this case
991 ;; only the first length will be processed (much faster).
992 ((ly:music? show-first)
994 ((orig-length (ly:music-length music))
995 (begin-length (ly:music-length show-first)))
996 ;; the first length must not exceed the original length.
997 (if (ly:moment<? begin-length orig-length)
998 (set! (ly:music-property music 'length)
999 (ly:music-length show-first)))
1005 (define-public toplevel-music-functions
1007 (lambda (music parser) (voicify-music music))
1008 (lambda (x parser) (music-map music-check-error x))
1009 (lambda (x parser) (music-map precompute-music-length x))
1010 (lambda (music parser)
1012 (music-map (quote-substitute (ly:parser-lookup parser 'musicQuotes)) music))
1014 ;; switch-on-debugging
1015 (lambda (x parser) (music-map cue-substitute x))
1018 (skip-as-needed x parser)
1022 ;;; general purpose music functions
1024 (define (shift-octave pitch octave-shift)
1025 (_i "Add @var{octave-shift} to the octave of @var{pitch}.")
1027 (+ (ly:pitch-octave pitch) octave-shift)
1028 (ly:pitch-notename pitch)
1029 (ly:pitch-alteration pitch)))
1035 (define (apply-durations lyric-music durations)
1036 (define (apply-duration music)
1037 (if (and (not (equal? (ly:music-length music) ZERO-MOMENT))
1038 (ly:duration? (ly:music-property music 'duration)))
1040 (set! (ly:music-property music 'duration) (car durations))
1041 (set! durations (cdr durations)))))
1043 (music-map apply-duration lyric-music))
1046 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1049 (define (recent-enough? bar-number alteration-def laziness)
1050 (if (or (number? alteration-def)
1051 (equal? laziness #t))
1053 (<= bar-number (+ (cadr alteration-def) laziness))))
1055 (define (is-tied? alteration-def)
1056 (let* ((def (if (pair? alteration-def)
1057 (car alteration-def)
1060 (if (equal? def 'tied) #t #f)))
1062 (define (extract-alteration alteration-def)
1063 (cond ((number? alteration-def)
1065 ((pair? alteration-def)
1066 (car alteration-def))
1069 (define (check-pitch-against-signature context pitch barnum laziness octaveness)
1070 "Checks the need for an accidental and a @q{restore} accidental against
1071 @code{localKeySignature}. The @var{laziness} is the number of measures
1072 for which reminder accidentals are used (i.e., if @var{laziness} is zero,
1073 only cancel accidentals in the same measure; if @var{laziness} is three,
1074 we cancel accidentals up to three measures after they first appear.
1075 @var{octaveness} is either @code{'same-octave} or @code{'any-octave} and
1076 specifies whether accidentals should be canceled in different octaves."
1077 (let* ((ignore-octave (cond ((equal? octaveness 'any-octave) #t)
1078 ((equal? octaveness 'same-octave) #f)
1080 (ly:warning (_ "Unknown octaveness type: ~S ") octaveness)
1081 (ly:warning (_ "Defaulting to 'any-octave."))
1083 (key-sig (ly:context-property context 'keySignature))
1084 (local-key-sig (ly:context-property context 'localKeySignature))
1085 (notename (ly:pitch-notename pitch))
1086 (octave (ly:pitch-octave pitch))
1087 (pitch-handle (cons octave notename))
1089 (need-accidental #f)
1090 (previous-alteration #f)
1091 (from-other-octaves #f)
1092 (from-same-octave (assoc-get pitch-handle local-key-sig))
1093 (from-key-sig (assoc-get notename local-key-sig)))
1095 ;; If no key signature match is found from localKeySignature, we may have a custom
1096 ;; type with octave-specific entries of the form ((octave . pitch) alteration)
1097 ;; instead of (pitch . alteration). Since this type cannot coexist with entries in
1098 ;; localKeySignature, try extracting from keySignature instead.
1099 (if (equal? from-key-sig #f)
1100 (set! from-key-sig (assoc-get pitch-handle key-sig)))
1102 ;; loop through localKeySignature to search for a notename match from other octaves
1103 (let loop ((l local-key-sig))
1105 (let ((entry (car l)))
1106 (if (and (pair? (car entry))
1107 (= (cdar entry) notename))
1108 (set! from-other-octaves (cdr entry))
1111 ;; find previous alteration-def for comparison with pitch
1113 ;; from same octave?
1114 ((and (eq? ignore-octave #f)
1115 (not (equal? from-same-octave #f))
1116 (recent-enough? barnum from-same-octave laziness))
1117 (set! previous-alteration from-same-octave))
1120 ((and (eq? ignore-octave #t)
1121 (not (equal? from-other-octaves #f))
1122 (recent-enough? barnum from-other-octaves laziness))
1123 (set! previous-alteration from-other-octaves))
1125 ;; not recent enough, extract from key signature/local key signature
1126 ((not (equal? from-key-sig #f))
1127 (set! previous-alteration from-key-sig)))
1129 (if (is-tied? previous-alteration)
1130 (set! need-accidental #t)
1132 (let* ((prev-alt (extract-alteration previous-alteration))
1133 (this-alt (ly:pitch-alteration pitch)))
1135 (if (not (= this-alt prev-alt))
1137 (set! need-accidental #t)
1138 (if (and (not (= this-alt 0))
1139 (or (< (abs this-alt) (abs prev-alt))
1140 (< (* prev-alt this-alt) 0)))
1141 (set! need-restore #t))))))
1143 (cons need-restore need-accidental)))
1145 (define-public ((make-accidental-rule octaveness laziness) context pitch barnum measurepos)
1146 "Creates an accidental rule that makes its decision based on the octave of the note
1147 and a laziness value.
1148 octaveness is either 'same-octave or 'any-octave and defines whether the rule should
1149 respond to accidental changes in other octaves than the current. 'same-octave is the
1150 normal way to typeset accidentals - an accidental is made if the alteration is different
1151 from the last active pitch in the same octave. 'any-octave looks at the last active pitch
1153 laziness states over how many bars an accidental should be remembered.
1154 0 is default - accidental lasts over 0 bar lines, that is, to the end of current measure.
1155 A positive integer means that the accidental lasts over that many bar lines.
1156 -1 is 'forget immediately', that is, only look at key signature.
1158 (check-pitch-against-signature context pitch barnum laziness octaveness))
1160 (define (key-entry-notename entry)
1161 "Return the pitch of an entry in localKeySignature. The entry is either of the form
1162 '(notename . alter) or '((octave . notename) . (alter barnum . measurepos))."
1163 (if (number? (car entry))
1167 (define (key-entry-octave entry)
1168 "Return the octave of an entry in localKeySignature (or #f if the entry does not have
1170 (and (pair? (car entry)) (caar entry)))
1172 (define (key-entry-bar-number entry)
1173 "Return the bar number of an entry in localKeySignature (or #f if the entry does not
1174 have a bar number)."
1175 (and (pair? (car entry)) (caddr entry)))
1177 (define (key-entry-measure-position entry)
1178 "Return the measure position of an entry in localKeySignature (or #f if the entry does
1179 not have a measure position)."
1180 (and (pair? (car entry)) (cdddr entry)))
1182 (define (key-entry-alteration entry)
1183 "Return the alteration of an entry in localKeySignature."
1184 (if (number? (car entry))
1188 (define-public (find-pitch-entry keysig pitch accept-global accept-local)
1189 "Return the first entry in keysig that matches the pitch.
1190 accept-global states whether key signature entries should be included.
1191 accept-local states whether local accidentals should be included.
1192 if no matching entry is found, #f is returned."
1194 (let* ((entry (car keysig))
1195 (entryoct (key-entry-octave entry))
1196 (entrynn (key-entry-notename entry))
1197 (oct (ly:pitch-octave pitch))
1198 (nn (ly:pitch-notename pitch)))
1199 (if (and (equal? nn entrynn)
1200 (or (and accept-global (equal? #f entryoct))
1201 (and accept-local (equal? oct entryoct))))
1203 (find-pitch-entry (cdr keysig) pitch accept-global accept-local)))
1206 (define-public (neo-modern-accidental-rule context pitch barnum measurepos)
1207 "an accidental rule that typesets an accidental if it differs from the key signature
1208 AND does not directly follow a note on the same staff-line.
1209 This rule should not be used alone because it does neither look at bar lines
1210 nor different accidentals at the same notename"
1211 (let* ((keysig (ly:context-property context 'localKeySignature))
1212 (entry (find-pitch-entry keysig pitch #t #t)))
1213 (if (equal? #f entry)
1215 (let* ((global-entry (find-pitch-entry keysig pitch #t #f))
1216 (key-acc (if (equal? global-entry #f)
1218 (key-entry-alteration global-entry)))
1219 (acc (ly:pitch-alteration pitch))
1220 (entrymp (key-entry-measure-position entry))
1221 (entrybn (key-entry-bar-number entry)))
1222 (cons #f (not (or (equal? acc key-acc)
1223 (and (equal? entrybn barnum) (equal? entrymp measurepos)))))))))
1225 (define-public (teaching-accidental-rule context pitch barnum measurepos)
1226 "an accidental rule that typesets a cautionary accidental
1227 if it is included in the key signature AND does not directly follow
1228 a note on the same staff-line."
1229 (let* ((keysig (ly:context-property context 'localKeySignature))
1230 (entry (find-pitch-entry keysig pitch #t #t)))
1231 (if (equal? #f entry)
1233 (let* ((global-entry (find-pitch-entry keysig pitch #f #f))
1234 (key-acc (if (equal? global-entry #f)
1236 (key-entry-alteration global-entry)))
1237 (acc (ly:pitch-alteration pitch))
1238 (entrymp (key-entry-measure-position entry))
1239 (entrybn (key-entry-bar-number entry)))
1240 (cons #f (not (or (equal? acc key-acc)
1241 (and (equal? entrybn barnum) (equal? entrymp measurepos)))))))))
1243 (define-public (set-accidentals-properties extra-natural
1244 auto-accs auto-cauts
1247 (make-sequential-music
1248 (append (if (boolean? extra-natural)
1249 (list (make-property-set 'extraNatural extra-natural))
1251 (list (make-property-set 'autoAccidentals auto-accs)
1252 (make-property-set 'autoCautionaries auto-cauts))))
1255 (define-public (set-accidental-style style . rest)
1256 "Set accidental style to STYLE. Optionally takes a context argument,
1257 e.g. 'Staff or 'Voice. The context defaults to Staff, except for piano styles, which
1258 use GrandStaff as a context. "
1259 (let ((context (if (pair? rest)
1261 (pcontext (if (pair? rest)
1262 (car rest) 'GrandStaff)))
1265 ;; accidentals as they were common in the 18th century.
1266 ((equal? style 'default)
1267 (set-accidentals-properties #t
1268 `(Staff ,(make-accidental-rule 'same-octave 0))
1271 ;; accidentals from one voice do NOT get cancelled in other voices
1272 ((equal? style 'voice)
1273 (set-accidentals-properties #t
1274 `(Voice ,(make-accidental-rule 'same-octave 0))
1277 ;; accidentals as suggested by Kurt Stone, Music Notation in the 20th century.
1278 ;; This includes all the default accidentals, but accidentals also needs cancelling
1279 ;; in other octaves and in the next measure.
1280 ((equal? style 'modern)
1281 (set-accidentals-properties #f
1282 `(Staff ,(make-accidental-rule 'same-octave 0)
1283 ,(make-accidental-rule 'any-octave 0)
1284 ,(make-accidental-rule 'same-octave 1))
1287 ;; the accidentals that Stone adds to the old standard as cautionaries
1288 ((equal? style 'modern-cautionary)
1289 (set-accidentals-properties #f
1290 `(Staff ,(make-accidental-rule 'same-octave 0))
1291 `(Staff ,(make-accidental-rule 'any-octave 0)
1292 ,(make-accidental-rule 'same-octave 1))
1294 ;; same as modern, but accidentals different from the key signature are always
1295 ;; typeset - unless they directly follow a note of the same pitch.
1296 ((equal? style 'neo-modern)
1297 (set-accidentals-properties #f
1298 `(Staff ,(make-accidental-rule 'same-octave 0)
1299 ,(make-accidental-rule 'any-octave 0)
1300 ,(make-accidental-rule 'same-octave 1)
1301 ,neo-modern-accidental-rule)
1304 ((equal? style 'neo-modern-cautionary)
1305 (set-accidentals-properties #f
1306 `(Staff ,(make-accidental-rule 'same-octave 0))
1307 `(Staff ,(make-accidental-rule 'any-octave 0)
1308 ,(make-accidental-rule 'same-octave 1)
1309 ,neo-modern-accidental-rule)
1311 ((equal? style 'neo-modern-voice)
1312 (set-accidentals-properties #f
1313 `(Voice ,(make-accidental-rule 'same-octave 0)
1314 ,(make-accidental-rule 'any-octave 0)
1315 ,(make-accidental-rule 'same-octave 1)
1316 ,neo-modern-accidental-rule
1317 Staff ,(make-accidental-rule 'same-octave 0)
1318 ,(make-accidental-rule 'any-octave 0)
1319 ,(make-accidental-rule 'same-octave 1)
1320 ,neo-modern-accidental-rule)
1323 ((equal? style 'neo-modern-voice-cautionary)
1324 (set-accidentals-properties #f
1325 `(Voice ,(make-accidental-rule 'same-octave 0))
1326 `(Voice ,(make-accidental-rule 'any-octave 0)
1327 ,(make-accidental-rule 'same-octave 1)
1328 ,neo-modern-accidental-rule
1329 Staff ,(make-accidental-rule 'same-octave 0)
1330 ,(make-accidental-rule 'any-octave 0)
1331 ,(make-accidental-rule 'same-octave 1)
1332 ,neo-modern-accidental-rule)
1334 ;; Accidentals as they were common in dodecaphonic music with no tonality.
1335 ;; Each note gets one accidental.
1336 ((equal? style 'dodecaphonic)
1337 (set-accidentals-properties #f
1338 `(Staff ,(lambda (c p bn mp) '(#f . #t)))
1341 ;; Multivoice accidentals to be read both by musicians playing one voice
1342 ;; and musicians playing all voices.
1343 ;; Accidentals are typeset for each voice, but they ARE cancelled across voices.
1344 ((equal? style 'modern-voice)
1345 (set-accidentals-properties #f
1346 `(Voice ,(make-accidental-rule 'same-octave 0)
1347 ,(make-accidental-rule 'any-octave 0)
1348 ,(make-accidental-rule 'same-octave 1)
1349 Staff ,(make-accidental-rule 'same-octave 0)
1350 ,(make-accidental-rule 'any-octave 0)
1351 ,(make-accidental-rule 'same-octave 1))
1354 ;; same as modernVoiceAccidental eccept that all special accidentals are typeset
1356 ((equal? style 'modern-voice-cautionary)
1357 (set-accidentals-properties #f
1358 `(Voice ,(make-accidental-rule 'same-octave 0))
1359 `(Voice ,(make-accidental-rule 'any-octave 0)
1360 ,(make-accidental-rule 'same-octave 1)
1361 Staff ,(make-accidental-rule 'same-octave 0)
1362 ,(make-accidental-rule 'any-octave 0)
1363 ,(make-accidental-rule 'same-octave 1))
1365 ;; stone's suggestions for accidentals on grand staff.
1366 ;; Accidentals are cancelled across the staves in the same grand staff as well
1367 ((equal? style 'piano)
1368 (set-accidentals-properties #f
1369 `(Staff ,(make-accidental-rule 'same-octave 0)
1370 ,(make-accidental-rule 'any-octave 0)
1371 ,(make-accidental-rule 'same-octave 1)
1373 ,(make-accidental-rule 'any-octave 0)
1374 ,(make-accidental-rule 'same-octave 1))
1377 ((equal? style 'piano-cautionary)
1378 (set-accidentals-properties #f
1379 `(Staff ,(make-accidental-rule 'same-octave 0))
1380 `(Staff ,(make-accidental-rule 'any-octave 0)
1381 ,(make-accidental-rule 'same-octave 1)
1383 ,(make-accidental-rule 'any-octave 0)
1384 ,(make-accidental-rule 'same-octave 1))
1387 ;; same as modern, but cautionary accidentals are printed for all sharp or flat
1388 ;; tones specified by the key signature.
1389 ((equal? style 'teaching)
1390 (set-accidentals-properties #f
1391 `(Staff ,(make-accidental-rule 'same-octave 0))
1392 `(Staff ,(make-accidental-rule 'same-octave 1)
1393 ,teaching-accidental-rule)
1396 ;; do not set localKeySignature when a note alterated differently from
1397 ;; localKeySignature is found.
1398 ;; Causes accidentals to be printed at every note instead of
1399 ;; remembered for the duration of a measure.
1400 ;; accidentals not being remembered, causing accidentals always to
1401 ;; be typeset relative to the time signature
1402 ((equal? style 'forget)
1403 (set-accidentals-properties '()
1404 `(Staff ,(make-accidental-rule 'same-octave -1))
1407 ;; Do not reset the key at the start of a measure. Accidentals will be
1408 ;; printed only once and are in effect until overridden, possibly many
1410 ((equal? style 'no-reset)
1411 (set-accidentals-properties '()
1412 `(Staff ,(make-accidental-rule 'same-octave #t))
1416 (ly:warning (_ "unknown accidental style: ~S") style)
1417 (make-sequential-music '()))))))
1419 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1421 (define-public (skip-of-length mus)
1422 "Create a skip of exactly the same length as MUS."
1426 'duration (ly:make-duration 0 0))))
1428 (make-event-chord (list (ly:music-compress skip (ly:music-length mus))))))
1430 (define-public (mmrest-of-length mus)
1431 "Create a mmrest of exactly the same length as MUS."
1434 (make-multi-measure-rest
1435 (ly:make-duration 0 0) '())))
1436 (ly:music-compress skip (ly:music-length mus))
1439 (define-public (pitch-of-note event-chord)
1442 ((evs (filter (lambda (x) (memq 'note-event (ly:music-property x 'types)))
1443 (ly:music-property event-chord 'elements))))
1446 (ly:music-property (car evs) 'pitch)
1449 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1451 (define-public (extract-named-music music music-name)
1452 "Return a flat list of all music named @code{music-name}
1454 (let ((extracted-list
1455 (if (ly:music? music)
1456 (if (eq? (ly:music-property music 'name) music-name)
1458 (let ((elt (ly:music-property music 'element))
1459 (elts (ly:music-property music 'elements)))
1461 (extract-named-music elt music-name)
1465 (extract-named-music x music-name ))
1468 (flatten-list extracted-list)))
1470 (define-public (event-chord-notes event-chord)
1471 "Return a list of all notes from @{event-chord}."
1473 (lambda (m) (eq? 'NoteEvent (ly:music-property m 'name)))
1474 (ly:music-property event-chord 'elements)))
1476 (define-public (event-chord-pitches event-chord)
1477 "Return a list of all pitches from @{event-chord}."
1478 (map (lambda (x) (ly:music-property x 'pitch))
1479 (event-chord-notes event-chord)))