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Diffstat (limited to 'module/vcomponent/control.scm')
-rw-r--r-- | module/vcomponent/control.scm | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/module/vcomponent/control.scm b/module/vcomponent/control.scm deleted file mode 100644 index 19a6fa18..00000000 --- a/module/vcomponent/control.scm +++ /dev/null @@ -1,37 +0,0 @@ -(define-module (vcomponent util control) - :use-module (hnh util) - :use-module (vcomponent) - :export (with-replaced-properties)) - - -(eval-when (expand load) ; No idea why I must have load here. - (define href (make-procedure-with-setter hash-ref hash-set!)) - - (define (set-temp-values! table component kvs) - (for-each (lambda (kv) - (let ((key (car kv)) - (val (cadr kv))) - (when (prop component key) - (set! (href table key) (prop component key)) - (set! (prop component key) val)))) - kvs)) - - (define (restore-values! table component keys) - (for-each (lambda (key) - (and=> (href table key) - (lambda (val) - (set! (prop component key) val)))) - keys))) - -;; TODO what is this even used for? -(define-syntax with-replaced-properties - (syntax-rules () - [(G_ (component (key val) ...) - body ...) - - (let ((htable (make-hash-table 10))) - (dynamic-wind - (lambda () (set-temp-values! htable component (quote ((key val) ...)))) ; In guard - (lambda () body ...) - (lambda () (restore-values! htable component (quote (key ...))))))])) ; Out guard - |