[armedbear-ticket] [armedbear] #54: pprint.lisp incompatible with gray-streams.lisp

[armedbear]

#54: pprint.lisp incompatible with gray-streams.lisp
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 Reporter:  ehuelsmann  |       Owner:  somebody
     Type:  defect      |      Status:  new     
 Priority:  major       |   Milestone:          
Component:  other       |     Version:          
 Keywords:              |  
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 pprint.lisp special-cases the XP-STRUCTURE argument type for the stream
 argument specified to all the stream functions.

 Although SBCL uses largely the same approach, it uses a (slightly)
 different approach, which is important in the details. (Isn't that where
 the devil usually is?)

 The difference between ABCL and SBCL is that SBCL - although it uses
 largely the same structure to store its pprinter values - this structure
 extends the structure which is used to represent streams. In ABCL, this
 structure is a structure by itself. To compensate for the fact that the
 structure isn't recognised as a stream itself, all stream functions
 special case the XP-STRUCTURE argument handling.

 Proposed solution: make streams based on dispatch tables stored in
 structures, just as SBCL does. This way, most of our streams "stuff" can
 be implemented in Lisp, instead of Java. As a bonus, this issue can be
 resolved along the same lines as SBCL does.

-- 
Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/54>
armedbear <http://common-lisp.net/project/armedbear>
armedbear