2 (define (denominator-tuplet-formatter mus)
3 (number->string (ly-get-mus-property mus 'denominator)))
5 (define (fraction-tuplet-formatter mus)
6 (string-append (number->string (ly-get-mus-property mus 'numerator))
8 (number->string (ly-get-mus-property mus 'denominator))
10 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
13 (define (shift-duration-log music shift dot)
14 "Recurse through music, adding SHIFT to duration-log and optionally
15 a dot to any note encountered. This scales the music up by a factor
16 2^shift * (2 - (1/2)^dot)"
17 (let* ((es (ly-get-mus-property music 'elements))
18 (e (ly-get-mus-property music 'element))
19 (n (ly-music-name music))
20 (f (lambda (x) (shift-duration-log x shift dot)))
22 (if (or (equal? n "Note_req")
23 (equal? n "Rest_req"))
25 (d (ly-get-mus-property music 'duration))
26 (cp (duration-factor d))
27 (nd (make-duration (+ shift (duration-log d))
28 (+ dot (duration-dot-count d))
33 (ly-set-mus-property! music 'duration nd)
49 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
50 (define (unfold-repeats music)
52 This function replaces all repeats with unfold repeats. It was
53 written by Rune Zedeler. "
54 (let* ((es (ly-get-mus-property music 'elements))
55 (e (ly-get-mus-property music 'element))
56 (n (ly-music-name music)))
58 (if (equal? n "Repeated_music")
61 (ly-get-mus-property music 'iterator-ctor)
62 Chord_tremolo_iterator::constructor)
63 (shift-duration-log music (intlog2 (ly-get-mus-property music 'repeat-count)) 0)
66 music 'length Repeated_music::unfolded_music_length)
68 music 'start-moment-function Repeated_music::first_start)
70 music 'iterator-ctor Unfolded_repeat_iterator::constructor)))
75 (map unfold-repeats es)))
85 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
86 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
88 (define (pitchify-scripts music)
89 "Copy the pitch fields of the Note_requests into Text_script_requests, to aid
91 (define (find-note musics)
92 (filter-list (lambda (m) (equal? (ly-music-name m) "Note_req")) musics)
94 (define (find-scripts musics)
95 (filter-list (lambda (m) (equal? (ly-music-name m) "Text_script_req")) musics))
98 (e (ly-get-mus-property music 'element))
99 (es (ly-get-mus-property music 'elements))
100 (notes (find-note es))
101 (pitch (if (pair? notes) (ly-get-mus-property (car notes) 'pitch) #f))
105 (map (lambda (x) (ly-set-mus-property! x 'pitch pitch)) (find-scripts es))
109 (ly-set-mus-property!
111 (map pitchify-scripts es)))
114 (ly-set-mus-property!
116 (pitchify-scripts e)))
126 (define (make-grob-property-set grob gprop val)
127 "Make a M-exp that sets GPROP to VAL in GROBS. Does a pop first, i.e.
128 this is not an override
131 (let* ((m (ly-make-music "Music")))
132 (ly-set-mus-property! m 'iterator-ctor Push_property_iterator::constructor)
133 (ly-set-mus-property! m 'symbol grob)
134 (ly-set-mus-property! m 'grob-property gprop)
135 (ly-set-mus-property! m 'grob-value val)
136 (ly-set-mus-property! m 'pop-first #t)
142 (define (make-grob-property-revert grob gprop)
143 "Revert the grob property GPROP for GROB."
144 (let* ((m (ly-make-music "Music")))
145 (ly-set-mus-property! m 'iterator-ctor Pop_property_iterator::constructor)
146 (ly-set-mus-property! m 'symbol grob)
147 (ly-set-mus-property! m 'grob-property gprop)
153 (define (make-voice-props-set n)
154 (make-sequential-music
156 (map (lambda (x) (make-grob-property-set x 'direction
158 '(Tie Slur Stem Dots))
159 (list (make-grob-property-set 'NoteColumn 'horizontal-shift (quotient n 2)))
163 (define (make-voice-props-revert)
164 (make-sequential-music
166 (make-grob-property-revert 'Tie 'direction)
167 (make-grob-property-revert 'Dots 'direction)
168 (make-grob-property-revert 'Stem 'direction)
169 (make-grob-property-revert 'Slur 'direction)
170 (make-grob-property-revert 'NoteColumn 'horizontal-shift)
174 (define (context-spec-music m context . rest)
175 "Add \context CONTEXT = foo to M. "
177 (let* ((cm (ly-make-music "Context_specced_music")))
178 (ly-set-mus-property! cm 'element m)
179 (ly-set-mus-property! cm 'context-type context)
180 (if (and (pair? rest) (string? (car rest)))
181 (ly-set-mus-property! cm 'context-id (car rest))
186 (define (make-sequential-music elts)
187 (let* ((m (ly-make-music "Sequential_music")))
188 (ly-set-mus-property! m 'elements elts)
191 (define (make-simultaneous-music elts)
192 (let* ((m (ly-make-music "Simultaneous_music")))
193 (ly-set-mus-property! m 'elements elts)
196 (define (music-separator? m)
198 (let* ((n (ly-get-mus-property m 'name )))
199 (and (symbol? n) (equal? 'separator n))
202 (define (split-one sep? l acc)
203 "Split off the first parts before separator and return both parts.
210 (split-one sep? (cdr l) (cons (car l) acc))
214 (define (split-list l sep?)
217 (let* ((c (split-one sep? l '())))
218 (cons (reverse! (car c) '()) (split-list (cdr c) sep?))
224 ; (display (split-list '(a b c / d e f / g) (lambda (x) (equal? x '/))) )
227 ;;; splitting chords into voices.
229 (define (voicify-list lst number)
230 "Make a list of Musics.
232 voicify-list :: [ [Music ] ] -> number -> [Music]
233 LST is a list music-lists.
237 (cons (context-spec-music
238 (make-sequential-music
240 (make-voice-props-set number)
241 (make-simultaneous-music (car lst))))
243 "Voice" (number->string number))
244 (voicify-list (cdr lst) (+ number 1))
248 (define (voicify-chord ch)
249 "Split the parts of a chord into different Voices using separator"
250 (let* ((es (ly-get-mus-property ch 'elements)))
253 (ly-set-mus-property! ch 'elements
254 (voicify-list (split-list es music-separator?) 0))
258 (define (voicify-music m)
259 "Recursively split chords that are separated with \\ "
263 (error "not music!"))
266 ((es (ly-get-mus-property m 'elements))
267 (e (ly-get-mus-property m 'element))
270 (ly-set-mus-property! m 'elements (map voicify-music es)))
272 (ly-set-mus-property! m 'element (voicify-music e)))
274 (and (equal? (ly-music-name m) "Simultaneous_music")
275 (reduce (lambda (x y ) (or x y)) (map music-separator? es)))
287 (define (has-request-chord elts)
288 (reduce (lambda (x y) (or x y)) (map (lambda (x) (equal? (ly-music-name x)
289 "Request_chord")) elts)
292 (define (ly-music-message music msg)
294 (ip (ly-get-mus-property music 'origin))
297 (if (ly-input-location? ip)
298 (ly-input-message ip msg)
302 (define (check-start-chords music)
303 "Check music expression for a Simultaneous_music containing notes\n(ie. Request_chords), without context specification. Called from parser."
306 ((es (ly-get-mus-property music 'elements))
307 (e (ly-get-mus-property music 'element))
308 (name (ly-music-name music))
312 ((equal? name "Context_specced_music") #t)
313 ((equal? name "Simultaneous_music")
315 (if (has-request-chord es)
316 (ly-music-message music "Starting score with a chord.\nPlease insert an explicit \\context before chord")
317 (map check-start-chords es)))
319 ((equal? name "Sequential_music")
321 (check-start-chords (car es))))
322 (else (if (music? e) (check-start-chords e )))
329 (define toplevel-music-functions (list check-start-chords voicify-music))