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Added a simplistic form of renaming

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Justin Ethier 2015-09-01 21:56:06 -04:00
parent 0578c4963a
commit ee8b5eeb65
1 changed files with 24 additions and 24 deletions
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48
scheme/cyclone/util.sld
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@ -266,31 +266,31 @@
((lambda (renames)
(lambda (identifier)
((lambda (cell)
; (if cell
; (cdr cell)
; ((lambda (name)
; (set! renames (cons (cons identifier name) renames))
; name)
(if cell
(cdr cell)
((lambda (name)
(set! renames (cons (cons identifier name) renames))
name)
; (let ((val (env:lookup identifier mac-env 'not-defined)))
; (cond
; ((eq? val 'not-defined)
; identifier)
; (else
; (let ((renamed (gensym identifier)))
; (env:define-variable! renamed val mac-env)
; renamed))))
; ;
; ;(gensym identifier)
; ; gensym not good enough, need to also preserve ref trans.
; ; also note that an identifier can be an object, it does not
; ; just have to be a symbol. although, of course, the rest
; ; of the code needs to be able to handle identifiers in
; ; forms other than symbols, if that is done.
; ;
; ;(make-syntactic-closure mac-env '() identifier)
; )))
identifier)
(let ((val (env:lookup identifier mac-env 'not-defined)))
(cond
((or (not (tagged-list? 'macro val)) ;; TODO: For now only rename macros, but should support anything
(eq? val 'not-defined))
identifier)
(else
(let ((renamed (gensym identifier)))
(env:define-variable! renamed val mac-env)
renamed))))
;
;(gensym identifier)
; gensym not good enough, need to also preserve ref trans.
; also note that an identifier can be an object, it does not
; just have to be a symbol. although, of course, the rest
; of the code needs to be able to handle identifiers in
; forms other than symbols, if that is done.
;
;(make-syntactic-closure mac-env '() identifier)
)))
(assq identifier renames))
))
;; TODO: For now, do not allow renaming of special form symbols to