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55 lines
1.3 KiB
55 lines
1.3 KiB
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(in-package :cl-dispatcher)
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(flan-utils:enable-all-readers)
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(defstruct %dispatcher
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hooks
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lock)
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(defmacro %atomic (disp &body thing)
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`(bt:with-lock-held ((%dispatcher-lock disp))
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,@thing))
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[
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(defun make-dispatcher ()
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(let ((d (make-%dispatcher)))
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(setf (%dispatcher-hooks d ) nil)
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(setf (%dispatcher-lock d) (bt:make-lock))
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d))
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(defmacro make ()
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`(make-dispatcher))
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(defun hook (disp name lam)
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(%atomic disp
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(if (assoc name (%dispatcher-hooks disp))
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(push lam (cdr (assoc name (%dispatcher-hooks disp))))
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(push (cons name (list lam)) (%dispatcher-hooks disp)))))
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(defun sig (disp name &optional (x nil))
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(%atomic disp
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(let ((hooks (assoc name (%dispatcher-hooks disp))))
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(if (null hooks)
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nil
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(mapc #'(lambda (y) $(funcall y x)) (cdr hooks))))))
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(defun sig-serial (disp name &optional (x nil))
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(%atomic disp
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(let ((hooks (assoc name (%dispatcher-hooks disp))))
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(if (null hooks)
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nil
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(mapc #'(lambda (y) (funcall y x)) (cdr hooks))))))
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]
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(defun test ()
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(let ((d (make)))
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(hook d "test" (lambda (x) (print x)))
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(hook d "test" (lambda (x) (print (cons "!!" x))))
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(hook d "test" (lambda (x) (print "HELLO")))
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(sig-serial d "test" 'uwu)
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(print 'signalled)))
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