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use `dynlet' for dynamic binding

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* module/language/elisp/compile-tree-il.scm (let-dynamic): Remove. All
  callers changed to use `dynlet' instead.
This commit is contained in:
BT Templeton 2011-08-08 23:40:07 -04:00
parent c64c51ebb0
commit c7e0d2f81c
1 changed files with 36 additions and 41 deletions
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63
module/language/elisp/compile-tree-il.scm
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@ -128,25 +128,6 @@
(generate-ensure-global loc sym mod)))
,body)))
;;; Build a construct that establishes dynamic bindings for certain
;;; variables. We may want to choose between binding with fluids and
;;; with-fluids* and using just ordinary module symbols and
;;; setting/reverting their values with a dynamic-wind.
(define (let-dynamic loc syms module vals body)
(call-primitive
loc
'with-fluids*
(make-application loc
(make-primitive-ref loc 'list)
(map (lambda (sym)
(make-module-ref loc module sym #t))
syms))
(make-application loc (make-primitive-ref loc 'list) vals)
(make-lambda loc
'()
(make-lambda-case #f '() #f #f #f '() '() body #f))))
;;; Handle access to a variable (reference/setting) correctly depending
;;; on whether it is currently lexically or dynamically bound. lexical
;;; access is done only for references to the value-slot module!
@ -344,13 +325,11 @@
(full-body
(if (null? dynamic)
tree-il
(let-dynamic loc
dynamic-ids
value-slot
(map (cut make-lexical-ref
(make-dynlet
loc
<>
<>)
(map (cut make-module-ref loc value-slot <> #t)
dynamic-ids)
(map (cut make-lexical-ref loc <> <>)
dynamic-ids
dynamic-vars)
tree-il))))
@ -539,8 +518,17 @@
for)))
(make-body (lambda () (compile-expr `(progn ,@forms)))))
(if (null? lexical)
(let-dynamic loc (map car dynamic) value-slot
(make-values dynamic) (make-body))
(make-dynlet loc
(map (compose (cut make-module-ref
loc
value-slot
<>
#t)
car)
dynamic)
(map (compose compile-expr cdr)
dynamic)
(make-body))
(let* ((lexical-syms (map (lambda (el) (gensym)) lexical))
(dynamic-syms (map (lambda (el) (gensym)) dynamic))
(all-syms (append lexical-syms dynamic-syms))
@ -557,12 +545,20 @@
(lambda ()
(if (null? dynamic)
(make-body)
(let-dynamic loc
(map car dynamic)
(make-dynlet loc
(map
(compose
(cut make-module-ref
loc
value-slot
<>
#t)
car)
dynamic)
(map
(lambda (sym)
(make-lexical-ref loc
(make-lexical-ref
loc
sym
sym))
dynamic-syms)
@ -595,10 +591,9 @@
`(,sym)
`(,target)
(lambda () (iterate (cdr tail))))))
(let-dynamic loc
`(,(caar tail))
value-slot
`(,value)
(make-dynlet loc
(list (make-module-ref loc value-slot sym #t))
(list value)
(iterate (cdr tail))))))))))))
(defspecial flet (loc args)