def-ef-switch-to-runtime

Arguments: name function

name should be a symbol naming an external format or external-format object (as returned by def-external-format). function should be a function object (not a symbol).

Associates a function object with an external-format. The function object is funcalled when switch-ef-to-runtime is called for the external-format named by name.

Examples:

(def-external-format :jis-base)

;; As part of the char-to-octets and octets-to-char macros, global data
;; may be used which is not needed once the macros are eliminated for the
;; external-format's runtime mode.  Supposing the global data can be
;; eliminated by calling (delete-trie ...), here's how to have that call
;; be made when the external-format is being switched to runtime mode.
;;
(def-ef-switch-to-runtime :jis-base
  #'(lambda ()
      (delete-trie :unicode-to-jis)
      (delete-trie :jis-to-unicode)))

See iacl.htm for more information on international character support in Allegro CL.

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This page was not revised from the 8.2 page.
Created 2012.5.30.