m)))
;; Music function: Apply function and check return value.
-(define-ly-syntax-loc (music-function parser loc fun args)
- (let ((m (apply fun (cons* parser loc args))))
- (if (ly:music? m)
- m
+;; args are in reverse order, rest may specify additional ones
+;;
+;; If args is not a proper list, an error has been flagged earlier
+;; and no fallback value had been available. In this case,
+;; we don't call the function but rather return the general
+;; fallback.
+(define-ly-syntax (music-function parser loc fun args . rest)
+ (let* ((sig (object-property fun 'music-function-signature))
+ (pred (if (pair? (car sig)) (caar sig) (car sig)))
+ (good (proper-list? args))
+ (m (and good (apply fun parser loc (reverse! args rest)))))
+ (if (and good (pred m))
(begin
- (ly:parser-error parser (_ "Music head function must return Music object") loc)
- (make-music 'Music)))))
+ (if (ly:music? m)
+ (set! (ly:music-property m 'origin) loc))
+ m)
+ (begin
+ (if good
+ (ly:parser-error parser
+ (format #f (_ "~a function cannot return ~a")
+ (type-name pred) m)
+ loc))
+ (and (pair? (car sig)) (cdar sig))))))
+
+(define-ly-syntax (argument-error parser location n pred arg)
+ (ly:parser-error
+ parser
+ (format #f
+ (_ "wrong type for argument ~a. Expecting ~a, found ~s")
+ n (type-name pred) arg)
+ location))
(define-ly-syntax-simple (void-music)
(make-music 'Music))
'numerator (car fraction)
'denominator (cdr fraction)))
-(define-ly-syntax-simple (transpose-music pitch music)
- (make-music 'TransposedMusic
- 'element (ly:music-transpose music pitch)))
-
(define-ly-syntax (tempo parser location text . rest)
(let* ((unit (and (pair? rest)
(car rest)))
(make-sequential-music (list tempo-change tempo-set))
tempo-change)))
-(define-ly-syntax-simple (skip-music dur)
- (make-music 'SkipMusic
- 'duration dur))
-
(define-ly-syntax-simple (repeat type num body alts)
(make-repeat type num body alts))
'element (repetition-function previous-chord location duration articulations)
'origin location))
-(define-ly-syntax-simple (context-specification type id mus ops create-new)
+(define-ly-syntax-simple (context-specification type id ops create-new mus)
(let* ((type-sym (if (symbol? type) type (string->symbol type)))
(csm (context-spec-music mus type-sym id)))
(set! (ly:music-property csm 'property-operations) ops)
(let* ((set (and (integer? label)
(context-spec-music (make-property-set 'rehearsalMark label)
'Score)))
- (ev (make-music 'MarkEvent))
- (ch (make-event-chord (list ev))))
+ (ev (make-music 'MarkEvent
+ 'origin location)))
- (set! (ly:music-property ev 'origin) location)
(if set
- (make-sequential-music (list set ch))
+ (make-sequential-music (list set ev))
(begin
(set! (ly:music-property ev 'label) label)
- ch))))
-
-(define-ly-syntax (partial parser location dur)
- "Make a partial measure."
-
- ;; We use `descend-to-context' here instead of `context-spec-music' to
- ;; ensure \partial still works if the Timing_translator is moved
- (descend-to-context
- (context-spec-music (make-music 'PartialSet
- 'origin location
- 'partial-duration dur)
- 'Timing)
- 'Score))
+ ev))))