(string-downcase
(car (string-tokenize (utsname:sysname (uname)))))))
+(define lilypond-declarations '())
+
+(defmacro-public define-session (name value)
+ "This defines a variable @var{name} with the starting value
+@var{value} that is reinitialized at the start of each session.
+A@tie{}session basically corresponds to one LilyPond file on the
+command line. The value is recorded at the start of the first session
+after loading all initialization files and before loading the user
+file and is reinstated for all of the following sessions. This
+happens just by replacing the value, not by copying structures, so you
+should not destructively modify them. For example, lists defined in
+this manner should be changed within a session only be adding material
+to their front or replacing them altogether, not by modifying parts of
+them. It is an error to call @code{define-session} after the first
+session has started."
+ (define (add-session-variable name value)
+ (if (ly:undead? lilypond-declarations)
+ (ly:error (_ "define-session used after session start")))
+ (let ((var (make-variable value)))
+ (module-add! (current-module) name var)
+ (set! lilypond-declarations (cons var lilypond-declarations))))
+ `(,add-session-variable ',name ,value))
+
+(defmacro-public define-session-public (name value)
+ "Like @code{define-session}, but also exports @var{name}."
+ `(begin
+ (define-session ,name ,value)
+ (export ,name)))
+
+(define-public (session-initialize thunk)
+ "Initialize this session. The first session in a LilyPond run is
+initialized by calling @var{thunk}, then recording the values of all
+variables in the current module as well as those defined with
+@code{define-session}. Subsequent calls of @code{session-initialize}
+ignore @var{thunk} and instead just reinitialize all recorded
+variables to their value after the initial call of @var{thunk}."
+
+;; We need to save the variables of the current module along with
+;; their values: functions defined in the module might refer to the
+;; variables.
+
+;; The entries in lilypond-declarations consist of a cons* consisting
+;; of symbol, variable, and value. Variables defined with
+;; define-session have the symbol set to #f.
+
+ (if (ly:undead? lilypond-declarations)
+ (begin
+ (for-each
+ (lambda (p)
+ (let ((var (cadr p))
+ (val (cddr p)))
+ (variable-set! var val)
+ (if (car p)
+ (module-add! (current-module) (car p) var))))
+ (ly:get-undead lilypond-declarations)))
+ (begin
+ (thunk)
+ (let ((decl (map! (lambda (v)
+ (cons* #f v (variable-ref v)))
+ lilypond-declarations)))
+ (module-for-each
+ (lambda (s v)
+ (let ((val (variable-ref v)))
+ (if (not (ly:lily-parser? val))
+ (set! decl
+ (cons
+ (cons* s v val)
+ decl)))))
+ (current-module))
+ (set! lilypond-declarations (ly:make-undead decl))))))
+
(define scheme-options-definitions
`(
;; NAMING: either
(,rhythmic-location? . "rhythmic location")
(,scheme? . "any type")
(,string-or-pair? . "string or pair")
+ (,string-or-music? . "string or music")
(,string-or-symbol? . "string or symbol")
(,void? . "void")
))
(let* ((failed '())
(separate-logs (ly:get-option 'separate-log-files))
(ping-log
- (if separate-logs
- (open-file (if (string-or-symbol? (ly:get-option 'log-file))
- (format #f "~a.log" (ly:get-option 'log-file))
- "/dev/stderr") "a") #f))
+ (and separate-logs
+ (if (string-or-symbol? (ly:get-option 'log-file))
+ (open-file (format #f "~a.log" (ly:get-option 'log-file))
+ "a")
+ (fdes->outport 2))))
(do-measurements (ly:get-option 'dump-profile))
(handler (lambda (key failed-file)
(set! failed (append (list failed-file) failed)))))
(dump-profile "lily-run-total" '(0 0) (profile-measurements)))
failed))
-(define-public lilypond-declarations '())
-
(define (lilypond-file handler file-name)
(catch 'ly-file-failed
(lambda () (ly:parse-file file-name))