Created
June 14, 2016 21:37
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Dynamic flet implementation
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(declaim (optimize (debug 3))) | |
(defpackage dynamic-flet | |
(:use :cl :alexandria) | |
(:export #:defdynamic #:dynamic-flet)) | |
(in-package dynamic-flet) | |
(eval-when (:compile-toplevel :load-toplevel :execute) | |
(defvar *dynamic-fbindings* (make-hash-table))) | |
(defmacro defdynamic (fname &optional args &body b) | |
(with-gensyms (fvar) | |
`(progn | |
(defparameter ,fvar ,(and args `(lambda ,args ,@b))) | |
(declaim (notinline ,fname)) | |
(defun ,fname (&rest args) | |
(apply ,fvar args)) | |
(eval-when (:compile-toplevel :load-toplevel :execute) | |
(setf (gethash ',fname *dynamic-fbindings*) ',fvar))))) | |
(defmacro dynamic-flet (dfns &body b) | |
`(let (,@(loop for (function-name lambda-list . fbody) in dfns | |
collect (list | |
(gethash function-name *dynamic-fbindings*) | |
`(lambda ,lambda-list ,@fbody)))) | |
,@b)) |
Author
jasom
commented
Jun 14, 2016
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