Mercurial > core / lisp/lib/obj/seq.lisp

 ;;; lib/obj/seq.lisp --- Sequences
 
 ;; This package provides CLOS mixins for implementing sequences and iterators.
 
 ;; We use SBCL's extension to ANSI spec which allows subclassing of
 ;; the SEQUENCE class as well as the Iterator Protocol described in
 ;; the manual. Where possible, we avoid the Simple Iterator Protocol.
 
 ;; SB-SEQUENCE is similar to SB-POSIX in the sense that you're
 ;; supposed to use their package prefixes since they conflict with
 ;; symbols exported by CL. This package can be USEd in a DEFPACKAGE
 ;; form without conflicts.
 
 ;;; Code:
 (in-package :obj/seq)
 
 (defclass iterator ()
   ()
   (:documentation "Iterator superclass inherited by objects implementing the iterator protocol."))
 
 (defclass ring ()
   ()
   (:documentation "Ring buffer protocol."))