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(system base types) knows about variables

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* module/system/base/types.scm (%tc7-variable): New tc7.
  (cell->object): Handle tc7-variable.

* test-suite/tests/types.test ("opaque objects"): Add a test.
This commit is contained in:
Andy Wingo 2015-02-17 10:58:29 +01:00
parent 37ae02ffa0
commit 577eab817c
2 changed files with 4 additions and 0 deletions
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3
module/system/base/types.scm
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@ -241,6 +241,7 @@ the matching bits, possibly with bitwise operations to extract it from BITS."
;; Cell types.
(define %tc3-struct 1)
(define %tc7-symbol 5)
(define %tc7-variable 7)
(define %tc7-vector 13)
(define %tc7-wvect 15)
(define %tc7-string 21)
@ -424,6 +425,8 @@ using BACKEND."
(match (cell->object buf backend)
(($ <stringbuf> string)
(string->symbol string))))
(((_ & #x7f = %tc7-variable) obj)
(inferior-object 'variable address))
(((_ & #x7f = %tc7-string) buf start len)
(match (cell->object buf backend)
(($ <stringbuf> string)