/usr/share/lilypond/2.14.2/scm/define-event-classes.scm is in lilypond-data 2.14.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 | ;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
;;;; Copyright (C) 2005--2011 Erik Sandberg <mandolaerik@gmail.com>
;;;;
;;;; LilyPond is free software: you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; the Free Software Foundation, either version 3 of the License, or
;;;; (at your option) any later version.
;;;;
;;;; LilyPond is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;;; GNU General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU General Public License
;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
(use-modules (srfi srfi-1))
;; Event class hierarchy. Each line is on the form (Parent . (List of children))
(define event-classes
'((() . (StreamEvent))
(StreamEvent .
(RemoveContext ChangeParent Override Revert UnsetProperty
SetProperty music-event OldMusicEvent CreateContext Prepare
OneTimeStep Finish))
(music-event . (annotate-output-event footnote-event
arpeggio-event breathing-event extender-event span-event
rhythmic-event dynamic-event break-event label-event percent-event
key-change-event string-number-event stroke-finger-event tie-event
part-combine-event part-combine-force-event
beam-forbid-event script-event tempo-change-event
tremolo-event bend-after-event fingering-event glissando-event
harmonic-event hyphen-event laissez-vibrer-event mark-event
multi-measure-text-event note-grouping-event
pes-or-flexa-event repeat-tie-event spacing-section-event
layout-instruction-event completize-extender-event break-span-event))
(layout-instruction-event . (apply-output-event))
(script-event . (articulation-event text-script-event))
(part-combine-event . (solo-one-event solo-two-event unisono-event))
(break-event . (line-break-event page-break-event page-turn-event))
(dynamic-event . (absolute-dynamic-event))
(span-event . (span-dynamic-event beam-event episema-event ligature-event
pedal-event phrasing-slur-event slur-event staff-span-event
text-span-event trill-span-event tremolo-span-event
tuplet-span-event))
(span-dynamic-event . (decrescendo-event crescendo-event))
(break-span-event . (break-dynamic-span-event))
(pedal-event . (sostenuto-event sustain-event una-corda-event))
(rhythmic-event . (lyric-event melodic-event multi-measure-rest-event
double-percent-event percent-event
repeat-slash-event rest-event
skip-event bass-figure-event))
(melodic-event . (cluster-note-event note-event))
(() . (Announcement))
(Announcement . (AnnounceNewContext))
))
;; Maps event-class to a list of ancestors (inclusive)
(define ancestor-lookup (make-hash-table 11))
;; Each class will be defined as
;; (class parent grandparent .. )
;; so that (eq? (cdr class) parent) holds.
(for-each
(lambda (rel)
(for-each
(lambda (type)
(hashq-set! ancestor-lookup type
(cons type (hashq-ref ancestor-lookup (car rel) '()))))
(cdr rel)))
event-classes)
(define-public (define-event-class leaf heritage)
(cond
((not (eq? leaf (car heritage)))
(ly:warning (_ "All classes must be the last in their matrilineal line.")))
((not (equal? (cdr heritage)
(list-head (hashq-ref ancestor-lookup (cadr heritage) '())
(length (cdr heritage)))))
(ly:warning (_ "All classes must have a well-defined pedigree in the existing class hierarchy.")))
(else (hashq-set! ancestor-lookup
leaf
(cons leaf
(hashq-ref ancestor-lookup
(cadr heritage)
'()))))))
;; TODO: Allow entering more complex classes, by taking unions.
(define-public (ly:make-event-class leaf)
(hashq-ref ancestor-lookup leaf))
(define-public (ly:in-event-class? ev cl)
"Does event @var{ev} belong to event class @var{cl}?"
(memq cl (ly:make-event-class (ly:event-property ev 'class))))
;; does this exist in guile already?
(define (map-tree f t)
(cond
((list? t)
(map (lambda (x) (map-tree f x)) t))
((pair? t)
(cons (map-tree f (car t)) (map-tree f (cdr t))))
(else (f t))))
;; expand each non-leaf subtree to (root . children), recursively
(define (expand-event-tree root)
(let ((children (assq root event-classes)))
(if children
(cons root (map expand-event-tree (cdr children)))
root)))
;; All leaf event classes that no translator listens to
;; directly. Avoids printing a warning.
(define unlistened-music-event-classes
'(harmonic-event line-break-event page-break-event page-turn-event label-event
solo-one-event solo-two-event skip-event unisono-event
part-combine-force-event break-dynamic-span-event))
;; produce neater representation of music event tree.
;; TODO: switch to this representation for the event-classes list?
(define music-event-tree (expand-event-tree 'music-event))
(define (sort-tree t)
(define (stringify el)
(if (symbol? el)
(symbol->string el)
(symbol->string (first el))))
(if (list? t)
(sort (map (lambda (el)
(if (list? el)
(cons (car el) (sort-tree (cdr el)))
el))
t)
(lambda (a b) (string<? (stringify a) (stringify b))))
t))
;;(use-modules (ice-9 pretty-print))
;;(pretty-print (cons (car music-event-tree) (sort-tree (cdr music-event-tree))))
;; check that the music event tree corresponds well with the set of
;; available translators; print warnings otherwise.
(map-tree (lambda (sym)
(if (and (symbol? sym)
(not (ly:is-listened-event-class sym))
(not (assq sym event-classes))
(not (memq sym unlistened-music-event-classes)))
(ly:programming-error (_ "event class ~A seems to be unused") sym)))
music-event-tree)
(map (lambda (sym)
(if (not (pair? (ly:make-event-class sym)))
;; should be programming-error
(ly:error (_ "translator listens to nonexisting event class ~A") sym)))
(ly:get-listened-event-classes))
(defmacro-public make-stream-event (expr)
(Stream_event::undump (primitive-eval (list 'quasiquote expr))))
(define* (simplify e)
(cond
;; Special case for lists reduces stack consumption.
((list? e) (map simplify e))
((pair? e) (cons (simplify (car e))
(simplify (cdr e))))
((ly:stream-event? e)
(list 'unquote (list 'make-stream-event (simplify (Stream_event::dump e)))))
((ly:music? e)
(list 'unquote (music->make-music e)))
((ly:moment? e)
(list 'unquote `(ly:make-moment
,(ly:moment-main-numerator e)
,(ly:moment-main-denominator e)
. ,(if (eq? 0 (ly:moment-grace-numerator e))
'()
(list (ly:moment-grace-numerator e)
(ly:moment-grace-denominator e))))))
((ly:duration? e)
(list 'unquote `(ly:make-duration
,(ly:duration-log e)
,(ly:duration-dot-count e)
,(car (ly:duration-factor e))
,(cdr (ly:duration-factor e)))))
((ly:pitch? e)
(list 'unquote `(ly:make-pitch
,(ly:pitch-octave e)
,(ly:pitch-notename e)
,(ly:pitch-alteration e))))
((ly:input-location? e)
(list 'unquote '(ly:dummy-input-location)))
(#t e)))
(define-public (ly:simplify-scheme e)
(list 'quasiquote (simplify e)))
|