-;;;; stream-event-classes.scm -- define the tree of stream-event classes.
+;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; source file of the GNU LilyPond music typesetter
+;;;; Copyright (C) 2005--2014 Erik Sandberg <mandolaerik@gmail.com>
;;;;
-;;;; (c) 2005-2006 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 ((List of children) . Parent)
+;; Event class hierarchy. Each line is on the form (Parent . (List of children))
(define event-classes
- '(((StreamEvent) . '())
- ((RemoveContext ChangeParent Override Revert UnsetProperty
- SetProperty MusicEvent OldMusicEvent CreateContext Prepare
- OneTimeStep Finish) . StreamEvent)
- ((arpeggio-event) . MusicEvent)
- ((Announcement) . '())
- ((AnnounceNewContext) . Announcement)
+ '((() . (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 alternative-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
+ measure-counter-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))
))
+(define-public (event-class-cons class parent classlist)
+ (let ((lineage (assq parent classlist)))
+ (if (not lineage)
+ (begin
+ (if (not (null? parent))
+ (ly:warning (_ "unknown parent class `~a'") parent))
+ (set! lineage '())))
+ (if (symbol? class)
+ (acons class lineage classlist)
+ (fold (lambda (elt alist)
+ (acons elt lineage alist))
+ classlist class))))
+
+(define all-event-classes
+ (fold (lambda (elt classlist)
+ (event-class-cons (cdr elt) (car elt) classlist))
+ '() event-classes))
+
;; Maps event-class to a list of ancestors (inclusive)
-;; TODO: use resizable hash
-(define ancestor-lookup (make-hash-table 1))
+(define ancestor-lookup (make-hash-table (length all-event-classes)))
+
+(define (ancestor-lookup-initialize)
+ (hash-clear! ancestor-lookup)
+ (for-each (lambda (ent) (hashq-set! ancestor-lookup (car ent) ent))
+ all-event-classes))
+
+(ancestor-lookup-initialize)
+(call-after-session ancestor-lookup-initialize)
;; 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 (cdr rel) '())))) ;; `(define ,type (cons ',type ,(cdr rel)))))
- (car rel)))
- event-classes)
+
+(define-public (define-event-class class parent)
+ "Defines a new event @code{class} derived from @code{parent}, a
+previously defined event class."
+ (let ((parentclass (ly:make-event-class parent)))
+ (cond
+ ((ly:make-event-class class)
+ (ly:error (_ "Cannot redefine event class `~S'") class))
+ ((not parentclass)
+ (ly:error (_ "Undefined parent event class `~S'" parentclass)))
+ (else
+ (hashq-set! ancestor-lookup
+ class
+ (cons class parentclass))))
+ *unspecified*))
;; TODO: Allow entering more complex classes, by taking unions.
(define-public (ly:make-event-class leaf)
- (hashq-ref ancestor-lookup leaf))
-;; (primitive-eval 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: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)))
+
+;; 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))))
(defmacro-public make-stream-event (expr)
(Stream_event::undump (primitive-eval (list 'quasiquote expr))))
;; Special case for lists reduces stack consumption.
((list? e) (map simplify e))
((pair? e) (cons (simplify (car e))
- (simplify (cdr e))))
+ (simplify (cdr e))))
((ly:stream-event? e)
- (list 'unquote `(make-stream-event ,(simplify (Stream_event::dump 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:moment-main-numerator e)
+ ,(ly:moment-main-denominator e)
+ . ,(if (zero? (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:duration-log e)
+ ,(ly:duration-dot-count e)
+ ,(ly:duration-scale))))
((ly:pitch? e)
(list 'unquote `(ly:make-pitch
- ,(ly:pitch-octave e)
- ,(ly:pitch-notename e)
- ,(ly:pitch-alteration e))))
+ ,(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))
-)
-
-; used by lily/dispatcher.cc
-(define-public (car< a b) (< (car a) (car b)))
+ (list 'quasiquote (simplify e)))
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