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(asdf:oos 'asdf:load-op :dynamic-wind)
(in-package :contextl-user)
(let ((symbol (make-dynamic-symbol)))
(assert (dynamic-symbol-p symbol))
#-cx-disable-dynamic-environments
(assert (not (dynamic-symbol-p (gensym))))
(assert (not (special-symbol-p symbol)))
(assert (not (dynamic-symbol-boundp symbol)))
(setf (dynamic-symbol-value symbol) 42)
(assert (dynamic-symbol-boundp symbol))
(assert (eql (dynamic-symbol-value symbol) 42))
(dynamic-symbol-makunbound symbol)
(assert (not (dynamic-symbol-boundp symbol)))
(assert (handler-case
(progn (dynamic-symbol-value symbol) nil)
(error () t))))
(let ((symbol (make-special-symbol)))
(assert (dynamic-symbol-p symbol))
(assert (special-symbol-p symbol))
(assert (not (special-symbol-p (gensym))))
(assert (not (dynamic-symbol-boundp symbol)))
(setf (dynamic-symbol-value symbol) 42)
(assert (dynamic-symbol-boundp symbol))
(assert (eql (dynamic-symbol-value symbol) 42))
(dynamic-symbol-makunbound symbol)
(assert (not (dynamic-symbol-boundp symbol)))
(assert (handler-case
(progn (dynamic-symbol-value symbol) nil)
(error () t))))
#-cx-disable-dynamic-environments
(progn
(defdynamic x 0)
(defdynamic y 0)
(defdynamic z 0)
(defdynamic env
(dynamic-let ((x 1) (y 2) (z 3))
(capture-dynamic-environment)))
(assert (and (zerop (dynamic x))
(zerop (dynamic y))
(zerop (dynamic z))))
(assert (equal (with-dynamic-environment ((dynamic env))
(list (dynamic x) (dynamic y) (dynamic z)))
'(1 2 3)))
(assert (and (zerop (dynamic x))
(zerop (dynamic y))
(zerop (dynamic z))))
(assert (equal (with-dynamic-environment ((dynamic env))
(list (incf (dynamic x)) (incf (dynamic y)) (incf (dynamic z))))
'(2 3 4)))
(assert (equal (with-dynamic-environment ((dynamic env))
(list (dynamic x) (dynamic y) (dynamic z)))
'(2 3 4)))
(setf (dynamic env)
(dynamic-let ((x 1))
(with-dynamic-mark (mark)
(dynamic-let ((y 2))
(capture-dynamic-environment mark)))))
(assert (with-dynamic-environment ((dynamic env))
(and (zerop (dynamic x))
(eql (dynamic y) 2))))
(defvar *mark*)
(defun bam ()
(capture-dynamic-environment *mark*))
(defun baz ()
(dynamic-let ((y 4))
(bam)))
(defun bar ()
(with-dynamic-mark (*mark*)
(baz)))
(defun foo ()
(dynamic-let ((x 3))
(bar)))
(setf (dynamic env) (foo))
(assert (with-dynamic-environment ((dynamic env))
(and (zerop (dynamic x))
(eql (dynamic y) 4))))
(setf (dynamic env)
(dynamic-let ((x 10))
(with-dynamic-mark (mark1)
(dynamic-let ((y 11))
(with-dynamic-mark (mark2)
(dynamic-let ((z 12))
(list (capture-dynamic-environment mark1)
(capture-dynamic-environment mark2))))))))
(assert (with-dynamic-environment ((first (dynamic env)))
(and (zerop (dynamic x))
(eql (dynamic y) 11)
(eql (dynamic z) 12))))
(assert (with-dynamic-environment ((second (dynamic env)))
(and (zerop (dynamic x))
(zerop (dynamic y))
(eql (dynamic z) 12))))
(setf (dynamic x) '(1 2 3))
(setf (dynamic env)
(dynamic-relet ((x (list* 'a 'b 'c (dynamic x))))
(capture-dynamic-environment)))
(assert (dynamic-let ((x '(d e f)))
(with-dynamic-environment ((dynamic env))
(equal (dynamic x) '(a b c d e f)))))
(setf (dynamic env)
(dynamic-wind
(handler-case
(proceed (capture-dynamic-environment))
(error () (print "error caught correctly") t))))
(assert (with-dynamic-environment ((dynamic env))
(error "This is an error.")))
(defdynamic xxx nil)
(defparameter *y*
(dlet ((xxx 1))
(capture-dynamic-environment)))
(assert (eql (with-dynamic-environment (*y*)
(dynamic xxx))
1))
(defparameter *x*
(with-dynamic-environment (*y*)
(capture-dynamic-environment)))
(assert (eql (with-dynamic-environment (*x*)
(dynamic xxx))
1)))
#+cx-disable-dynamic-environments
(print "Dynamic environments not supported.")
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