1 ;;;; music-functions.scm --
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2007 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."
79 (let ((es (ly:music-property music 'elements))
80 (e (ly:music-property music 'element)))
81 (display (ly:music-mutable-properties music))
83 (begin (display "\nElements: {\n")
84 (map display-music es)
94 ;;; A scheme music pretty printer
96 (define (markup-expression->make-markup markup-expression)
97 "Transform `markup-expression' into an equivalent, hopefuly readable, scheme expression.
99 \\markup \\bold \\italic hello
101 (markup #:line (#:bold (#:italic (#:simple \"hello\"))))"
102 (define (proc->command-keyword proc)
103 "Return a keyword, eg. `#:bold', from the `proc' function, eg. #<procedure bold-markup (layout props arg)>"
104 (let ((cmd-markup (symbol->string (procedure-name proc))))
105 (symbol->keyword (string->symbol (substring cmd-markup 0 (- (string-length cmd-markup)
106 (string-length "-markup")))))))
107 (define (transform-arg arg)
108 (cond ((and (pair? arg) (markup? (car arg))) ;; a markup list
109 (apply append (map inner-markup->make-markup arg)))
110 ((and (not (string? arg)) (markup? arg)) ;; a markup
111 (inner-markup->make-markup arg))
114 (define (inner-markup->make-markup mrkup)
117 (let ((cmd (proc->command-keyword (car mrkup)))
118 (args (map transform-arg (cdr mrkup))))
121 (if (string? markup-expression)
123 `(markup ,@(inner-markup->make-markup markup-expression))))
125 (define-public (music->make-music obj)
126 "Generate a expression that, once evaluated, may return an object equivalent to `obj',
127 that is, for a music expression, a (make-music ...) form."
128 (cond (;; markup expression
130 (markup-expression->make-markup obj))
134 ',(ly:music-property obj 'name)
135 ,@(apply append (map (lambda (prop)
137 ,(music->make-music (cdr prop))))
138 (remove (lambda (prop)
139 (eqv? (car prop) 'origin))
140 (ly:music-mutable-properties obj))))))
143 `(ly:make-moment ,(ly:moment-main-numerator obj)
144 ,(ly:moment-main-denominator obj)
145 ,(ly:moment-grace-numerator obj)
146 ,(ly:moment-grace-denominator obj)))
149 `(ly:make-duration ,(ly:duration-log obj)
150 ,(ly:duration-dot-count obj)
151 ,(car (ly:duration-factor obj))
152 ,(cdr (ly:duration-factor obj))))
155 `(ly:make-pitch ,(ly:pitch-octave obj)
156 ,(ly:pitch-notename obj)
157 ,(ly:pitch-alteration obj)))
160 (or (procedure-name obj) obj))
161 (;; a symbol (avoid having an unquoted symbol)
164 (;; an empty list (avoid having an unquoted empty list)
169 `(list ,@(map music->make-music obj)))
172 `(cons ,(music->make-music (car obj))
173 ,(music->make-music (cdr obj))))
177 (use-modules (ice-9 pretty-print))
178 (define*-public (display-scheme-music obj #:optional (port (current-output-port)))
179 "Displays `obj', typically a music expression, in a friendly fashion,
180 which often can be read back in order to generate an equivalent expression.
184 (pretty-print (music->make-music obj) port)
188 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
190 (define-public (shift-one-duration-log music shift dot)
191 " add SHIFT to duration-log of 'duration in music and optionally
192 a dot to any note encountered. This scales the music up by a factor
193 2^shift * (2 - (1/2)^dot)"
194 (let ((d (ly:music-property music 'duration)))
196 (let* ((cp (ly:duration-factor d))
197 (nd (ly:make-duration (+ shift (ly:duration-log d))
198 (+ dot (ly:duration-dot-count d))
201 (set! (ly:music-property music 'duration) nd)))
204 (define-public (shift-duration-log music shift dot)
205 (music-map (lambda (x) (shift-one-duration-log x shift dot))
208 (define-public (make-repeat name times main alts)
209 "create a repeat music expression, with all properties initialized properly"
210 (let ((talts (if (< times (length alts))
212 (ly:warning (_ "More alternatives than repeats. Junking excess alternatives"))
215 (r (make-repeated-music name)))
216 (set! (ly:music-property r 'element) main)
217 (set! (ly:music-property r 'repeat-count) (max times 1))
218 (set! (ly:music-property r 'elements) talts)
219 (if (equal? name "tremolo")
220 (let* ((dots (1- (logcount times)))
221 (mult (/ (* times (ash 1 dots)) (1- (ash 2 dots))))
222 (shift (- (ly:intlog2 (floor mult)))))
223 (if (not (integer? mult))
224 (ly:warning (_ "illegal tremolo repeat count: ~a") times))
225 (if (memq 'sequential-music (ly:music-property main 'types))
226 ;; \repeat "tremolo" { c4 d4 }
227 (let ((children (length (ly:music-property main 'elements))))
228 (if (not (= children 2))
229 (ly:warning (_ "expecting 2 elements for chord tremolo, found ~a") children))
230 (ly:music-compress r (ly:make-moment 1 children))
231 (shift-duration-log r (1- shift) dots))
232 ;; \repeat "tremolo" c4
233 (shift-duration-log r shift dots)))
236 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
239 (define-public (note-to-cluster music)
240 "Replace NoteEvents by ClusterNoteEvents."
241 (if (eq? (ly:music-property music 'name) 'NoteEvent)
242 (make-music 'ClusterNoteEvent
243 'pitch (ly:music-property music 'pitch)
244 'duration (ly:music-property music 'duration))
247 (define-public (notes-to-clusters music)
248 (music-map note-to-cluster music))
250 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
253 (define-public (unfold-repeats music)
255 This function replaces all repeats with unfold repeats. "
257 (let ((es (ly:music-property music 'elements))
258 (e (ly:music-property music 'element))
260 (if (memq 'repeated-music (ly:music-property music 'types))
262 ((props (ly:music-mutable-properties music))
263 (old-name (ly:music-property music 'name))
264 (flattened (flatten-alist props)))
266 (set! music (apply make-music (cons 'UnfoldedRepeatedMusic
269 (if (equal? old-name 'TremoloRepeatedMusic)
270 (let* ((seq-arg? (memq 'sequential-music
271 (ly:music-property e 'types)))
272 (count (ly:music-property music 'repeat-count))
273 (dot-shift (if (= 0 (remainder count 3))
277 (set! count (* 2 (quotient count 3))))
279 (shift-duration-log music (+ (if seq-arg? 1 0)
280 (ly:intlog2 count)) dot-shift)
283 (ly:music-compress e (ly:make-moment (length (ly:music-property
284 e 'elements)) 1)))))))
288 (set! (ly:music-property music 'elements)
289 (map unfold-repeats es)))
291 (set! (ly:music-property music 'element)
295 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
296 ;; property setting music objs.
298 (define-public (make-grob-property-set grob gprop val)
299 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
300 i.e. this is not an override"
301 (make-music 'OverrideProperty
307 (define-public (make-grob-property-override grob gprop val)
308 "Make a Music expression that sets GPROP to VAL in GROB. Does a pop first,
309 i.e. this is not an override"
310 (make-music 'OverrideProperty
315 (define-public (make-grob-property-revert grob gprop)
316 "Revert the grob property GPROP for GROB."
317 (make-music 'RevertProperty
319 'grob-property gprop))
321 (define direction-polyphonic-grobs
322 '(Stem Tie Rest Slur PhrasingSlur Script TextScript Dots DotColumn Fingering))
324 (define-safe-public (make-voice-props-set n)
325 (make-sequential-music
327 (map (lambda (x) (make-grob-property-set x 'direction
329 direction-polyphonic-grobs)
331 (make-property-set 'graceSettings
332 ;; TODO: take this from voicedGraceSettings or similar.
333 '((Voice Stem font-size -3)
334 (Voice NoteHead font-size -3)
335 (Voice Dots font-size -3)
336 (Voice Stem length-fraction 0.8)
337 (Voice Stem no-stem-extend #t)
338 (Voice Beam thickness 0.384)
339 (Voice Beam length-fraction 0.8)
340 (Voice Accidental font-size -4)))
342 (make-grob-property-set 'NoteColumn 'horizontal-shift (quotient n 2))
343 (make-grob-property-set 'MultiMeasureRest 'staff-position (if (odd? n) -4 4))))))
345 (define-safe-public (make-voice-props-revert)
346 (make-sequential-music
348 (map (lambda (x) (make-grob-property-revert x 'direction))
349 direction-polyphonic-grobs)
350 (list (make-property-unset 'graceSettings)
351 (make-grob-property-revert 'NoteColumn 'horizontal-shift)
352 (make-grob-property-revert 'MultiMeasureRest 'staff-position)))))
355 (define-safe-public (context-spec-music m context #:optional id)
356 "Add \\context CONTEXT = ID to M. "
357 (let ((cm (make-music 'ContextSpeccedMusic
359 'context-type context)))
361 (set! (ly:music-property cm 'context-id) id))
364 (define-public (descend-to-context m context)
365 "Like context-spec-music, but only descending. "
366 (let ((cm (context-spec-music m context)))
367 (ly:music-set-property! cm 'descend-only #t)
370 (define-public (make-non-relative-music mus)
371 (make-music 'UnrelativableMusic
374 (define-public (make-apply-context func)
375 (make-music 'ApplyContext
378 (define-public (make-sequential-music elts)
379 (make-music 'SequentialMusic
382 (define-public (make-simultaneous-music elts)
383 (make-music 'SimultaneousMusic
386 (define-safe-public (make-event-chord elts)
387 (make-music 'EventChord
390 (define-public (make-skip-music dur)
391 (make-music 'SkipMusic
394 (define-public (make-grace-music music)
395 (make-music 'GraceMusic
401 (define-public (make-multi-measure-rest duration location)
402 (make-music 'MultiMeasureRestMusic
406 (define-public (make-property-set sym val)
407 (make-music 'PropertySet
411 (define-public (make-property-unset sym)
412 (make-music 'PropertyUnset
415 (define-public (make-ottava-set octavation)
416 (let ((m (make-music 'ApplyContext)))
417 (define (ottava-modify context)
418 "Either reset middleCPosition to the stored original, or remember
419 old middleCPosition, add OCTAVATION to middleCPosition, and set
420 OTTAVATION to `8va', or whatever appropriate."
421 (if (number? (ly:context-property context 'middleCPosition))
423 (if (number? (ly:context-property context 'originalMiddleCPosition))
424 (let ((where (ly:context-property-where-defined context 'middleCPosition)))
426 (ly:context-set-property! context 'middleCPosition
427 (ly:context-property context 'originalMiddleCPosition))
428 (ly:context-unset-property where 'originalMiddleCPosition)
429 (ly:context-unset-property where 'ottavation)))
431 (let* ((where (ly:context-property-where-defined context 'middleCPosition))
432 (c0 (ly:context-property context 'middleCPosition))
433 (new-c0 (+ c0 (* -7 octavation)))
434 (string (cdr (assoc octavation '((2 . "15ma")
439 (ly:context-set-property! context 'middleCPosition new-c0)
440 (ly:context-set-property! context 'originalMiddleCPosition c0)
441 (ly:context-set-property! context 'ottavation string)))))
443 (set! (ly:music-property m 'procedure) ottava-modify)
444 (context-spec-music m 'Staff)))
446 (define-public (set-octavation ottavation)
447 (ly:export (make-ottava-set ottavation)))
449 (define-public (make-time-signature-set num den . rest)
450 "Set properties for time signature NUM/DEN. Rest can contain a list
453 (define (standard-beat-grouping num den)
455 "Some standard subdivisions for time signatures."
457 ((key (cons num den))
458 (entry (assoc key '(((6 . 8) . (3 3))
461 ((12 . 8) . (3 3 3 3))
469 (let* ((set1 (make-property-set 'timeSignatureFraction (cons num den)))
470 (beat (ly:make-moment 1 den))
471 (len (ly:make-moment num den))
472 (set2 (make-property-set 'beatLength beat))
473 (set3 (make-property-set 'measureLength len))
474 (set4 (make-property-set 'beatGrouping (if (pair? rest)
476 (standard-beat-grouping num den))))
477 (basic (list set1 set2 set3 set4)))
479 (context-spec-music (make-sequential-music basic) 'Timing) 'Score)))
481 (define-public (make-mark-set label)
482 "Make the music for the \\mark command."
483 (let* ((set (if (integer? label)
484 (context-spec-music (make-property-set 'rehearsalMark label)
487 (ev (make-music 'MarkEvent))
488 (ch (make-event-chord (list ev))))
490 (make-sequential-music (list set ch))
492 (set! (ly:music-property ev 'label) label)
495 (define-public (set-time-signature num den . rest)
496 (ly:export (apply make-time-signature-set `(,num ,den . ,rest))))
498 (define-safe-public (make-articulation name)
499 (make-music 'ArticulationEvent
500 'articulation-type name))
502 (define-public (make-lyric-event string duration)
503 (make-music 'LyricEvent
507 (define-safe-public (make-span-event type spandir)
509 'span-direction spandir))
511 (define-public (set-mus-properties! m alist)
512 "Set all of ALIST as properties of M."
515 (set! (ly:music-property m (caar alist)) (cdar alist))
516 (set-mus-properties! m (cdr alist)))))
518 (define-public (music-separator? m)
520 (let ((ts (ly:music-property m 'types)))
521 (memq 'separator ts)))
523 ;;; splitting chords into voices.
524 (define (voicify-list lst number)
525 "Make a list of Musics.
527 voicify-list :: [ [Music ] ] -> number -> [Music]
528 LST is a list music-lists.
530 NUMBER is 0-base, i.e. Voice=1 (upstems) has number 0.
534 (cons (context-spec-music
535 (make-sequential-music
536 (list (make-voice-props-set number)
537 (make-simultaneous-music (car lst))))
538 'Voice (number->string (1+ number)))
539 (voicify-list (cdr lst) (1+ number)))))
541 (define (voicify-chord ch)
542 "Split the parts of a chord into different Voices using separator"
543 (let ((es (ly:music-property ch 'elements)))
544 (set! (ly:music-property ch 'elements)
545 (voicify-list (split-list-by-separator es music-separator?) 0))
548 (define-public (voicify-music m)
549 "Recursively split chords that are separated with \\ "
550 (if (not (ly:music? m))
551 (ly:error (_ "music expected: ~S") m))
552 (let ((es (ly:music-property m 'elements))
553 (e (ly:music-property m 'element)))
556 (set! (ly:music-property m 'elements) (map voicify-music es)))
558 (set! (ly:music-property m 'element) (voicify-music e)))
559 (if (and (equal? (ly:music-property m 'name) 'SimultaneousMusic)
560 (reduce (lambda (x y ) (or x y)) #f (map music-separator? es)))
561 (set! m (context-spec-music (voicify-chord m) 'Staff)))
564 (define-public (empty-music)
565 (ly:export (make-music 'Music)))
568 ; Make a function that checks score element for being of a specific type.
569 (define-public (make-type-checker symbol)
572 ;;(eq? #t (ly:grob-property elt symbol))
573 (not (eq? #f (memq symbol (ly:grob-property elt 'interfaces))))))
575 (define-public ((outputproperty-compatibility func sym val) grob g-context ao-context)
577 (set! (ly:grob-property grob sym) val)))
580 (define-public ((set-output-property grob-name symbol val) grob grob-c context)
583 \\applyoutput #(set-output-property 'Clef 'extra-offset '(0 . 1))
586 (let ((meta (ly:grob-property grob 'meta)))
587 (if (equal? (cdr (assoc 'name meta)) grob-name)
588 (set! (ly:grob-property grob symbol) val))))
592 (define-public (smart-bar-check n)
593 "Make a bar check that checks for a specific bar number.
595 (let ((m (make-music 'ApplyContext)))
597 (let* ((bn (ly:context-property tr 'currentBarNumber)))
601 ;; FIXME: uncomprehensable message
602 (_ "Bar check failed. Expect to be at ~a, instead at ~a")
604 (set! (ly:music-property m 'procedure) checker)
608 (define-public (skip->rest mus)
610 "Replace MUS by RestEvent of the same duration if it is a
611 SkipEvent. Useful for extracting parts from crowded scores"
613 (if (equal? (ly:music-property mus 'name) 'SkipEvent)
614 (make-music 'RestEvent 'duration (ly:music-property mus 'duration))
618 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
619 ;; warn for bare chords at start.
621 (define (has-request-chord elts)
622 (reduce (lambda (x y) (or x y)) #f
624 (equal? (ly:music-property x 'name) 'RequestChord))
627 (define-public (ly:music-message music msg)
628 (let ((ip (ly:music-property music 'origin)))
629 (if (ly:input-location? ip)
630 (ly:input-message ip msg)
633 (define (check-start-chords music)
634 "Check music expression for a Simultaneous_music containing notes\n(ie. Request_chords),
635 without context specification. Called from parser."
636 (let ((es (ly:music-property music 'elements))
637 (e (ly:music-property music 'element))
638 (name (ly:music-property music 'name)))
639 (cond ((equal? name "Context_specced_music") #t)
640 ((equal? name "Simultaneous_music")
641 (if (has-request-chord es)
642 (ly:music-message music "Starting score with a chord.\nInsert an explicit \\context before chord")
643 (map check-start-chords es)))
644 ((equal? name "SequentialMusic")
646 (check-start-chords (car es))))
647 (else (if (ly:music? e) (check-start-chords e)))))
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) 'Score)
818 (make-music 'SkipMusic 'duration
819 (ly:make-duration 0 0
820 (ly:moment-main-numerator skip-length)
821 (ly:moment-main-denominator skip-length)))
822 (context-spec-music (make-property-set 'skipTypesetting #f) 'Score)))
827 (define-public toplevel-music-functions
829 (lambda (music parser) (voicify-music music))
830 (lambda (x parser) (music-map music-check-error x))
831 (lambda (x parser) (music-map precompute-music-length x))
832 (lambda (music parser)
834 (music-map (quote-substitute (ly:parser-lookup parser 'musicQuotes)) music))
836 ;; switch-on-debugging
837 (lambda (x parser) (music-map cue-substitute x))
840 (skip-to-last x parser)
847 (define (apply-durations lyric-music durations)
848 (define (apply-duration music)
849 (if (and (not (equal? (ly:music-length music) ZERO-MOMENT))
850 (ly:duration? (ly:music-property music 'duration)))
852 (set! (ly:music-property music 'duration) (car durations))
853 (set! durations (cdr durations)))))
855 (music-map apply-duration lyric-music))
858 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
861 (define-public (set-accidentals-properties extra-natural
865 (make-sequential-music
866 (append (if (boolean? extra-natural)
867 (list (make-property-set 'extraNatural extra-natural))
869 (list (make-property-set 'autoAccidentals auto-accs)
870 (make-property-set 'autoCautionaries auto-cauts))))
873 (define-public (set-accidental-style style . rest)
874 "Set accidental style to STYLE. Optionally takes a context argument,
875 e.g. 'Staff or 'Voice. The context defaults to Voice, except for piano styles, which
876 use GrandStaff as a context. "
877 (let ((context (if (pair? rest)
879 (pcontext (if (pair? rest)
880 (car rest) 'GrandStaff)))
883 ;; accidentals as they were common in the 18th century.
884 ((equal? style 'default)
885 (set-accidentals-properties #t '(Staff (same-octave . 0))
887 ;; accidentals from one voice do NOT get cancelled in other voices
888 ((equal? style 'voice)
889 (set-accidentals-properties #t '(Voice (same-octave . 0))
891 ;; accidentals as suggested by Kurt Stone, Music Notation in the 20th century.
892 ;; This includes all the default accidentals, but accidentals also needs cancelling
893 ;; in other octaves and in the next measure.
894 ((equal? style 'modern)
895 (set-accidentals-properties #f '(Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
897 ;; the accidentals that Stone adds to the old standard as cautionaries
898 ((equal? style 'modern-cautionary)
899 (set-accidentals-properties #f '(Staff (same-octave . 0))
900 '(Staff (any-octave . 0) (same-octave . 1))
902 ;; Multivoice accidentals to be read both by musicians playing one voice
903 ;; and musicians playing all voices.
904 ;; Accidentals are typeset for each voice, but they ARE cancelled across voices.
905 ((equal? style 'modern-voice)
906 (set-accidentals-properties #f
907 '(Voice (same-octave . 0) (any-octave . 0) (same-octave . 1)
908 Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
911 ;; same as modernVoiceAccidental eccept that all special accidentals are typeset
913 ((equal? style 'modern-voice-cautionary)
914 (set-accidentals-properties #f
915 '(Voice (same-octave . 0))
916 '(Voice (any-octave . 0) (same-octave . 1)
917 Staff (same-octave . 0) (any-octave . 0) (same-octave . 1))
919 ;; stone's suggestions for accidentals on grand staff.
920 ;; Accidentals are cancelled across the staves in the same grand staff as well
921 ((equal? style 'piano)
922 (set-accidentals-properties #f
923 '(Staff (same-octave . 0)
924 (any-octave . 0) (same-octave . 1)
925 GrandStaff (any-octave . 0) (same-octave . 1))
928 ((equal? style 'piano-cautionary)
929 (set-accidentals-properties #f
930 '(Staff (same-octave . 0))
931 '(Staff (any-octave . 0) (same-octave . 1)
932 GrandStaff (any-octave . 0) (same-octave . 1))
935 ;; do not set localKeySignature when a note alterated differently from
936 ;; localKeySignature is found.
937 ;; Causes accidentals to be printed at every note instead of
938 ;; remembered for the duration of a measure.
939 ;; accidentals not being remembered, causing accidentals always to
940 ;; be typeset relative to the time signature
942 ((equal? style 'forget)
943 (set-accidentals-properties '()
944 '(Staff (same-octave . -1))
946 ;; Do not reset the key at the start of a measure. Accidentals will be
947 ;; printed only once and are in effect until overridden, possibly many
949 ((equal? style 'no-reset)
950 (set-accidentals-properties '()
951 '(Staff (same-octave . #t))
955 (ly:warning (_ "unknown accidental style: ~S" style))
956 (make-sequential-music '()))))))
958 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
960 (define-public (skip-of-length mus)
961 "Create a skip of exactly the same length as MUS."
965 'duration (ly:make-duration 0 0))))
967 (make-event-chord (list (ly:music-compress skip (ly:music-length mus))))))
969 (define-public (mmrest-of-length mus)
970 "Create a mmrest of exactly the same length as MUS."
973 (make-multi-measure-rest
974 (ly:make-duration 0 0) '())))
975 (ly:music-compress skip (ly:music-length mus))
978 (define-public (pitch-of-note event-chord)
981 ((evs (filter (lambda (x) (memq 'note-event (ly:music-property x 'types)))
982 (ly:music-property event-chord 'elements))))
985 (ly:music-property (car evs) 'pitch)