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types.scm (env-variable-address): Reverted the last change.

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This commit is contained in:
Keisuke Nishida 2000-08-22 17:39:49 +00:00
parent 307cdcf0d0
commit fd329e8725
1 changed files with 10 additions and 5 deletions
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15
vm/types.scm
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@ -271,14 +271,19 @@
(define (get-offset obj list)
(- (length list) (length (memq obj list))))
(define-generic env-variable-address)
(define-method (env-variable-address (env <vm:env>) (var <vm:local-var>))
(define-public (env-variable-address env var)
(env-finalize! env)
(cond ((local-variable? var)
(env-local-variable-address env var))
((external-variable? var)
(env-external-variable-address env var))
(else
(error "Wrong type argument: ~S" var))))
(define (env-local-variable-address env var)
(get-offset (variable-location var) (env-locations env)))
(define-method (env-variable-address (env <vm:env>) (var <vm:external-var>))
(env-finalize! env)
(define (env-external-variable-address env var)
(let loop ((depth 0) (env env))
(let ((list (env-externals env)))
(cond ((null? list)