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* boot-9.scm (cond-expand-features): Made the feature list public,

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so it can be manipulated by `use-srfis'.
	(use-srfis): New procedure.
This commit is contained in:
Martin Grabmüller 2001-05-15 20:20:51 +00:00
parent 39cde5c57c
commit f41be016f6
2 changed files with 26 additions and 6 deletions
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6
ice-9/ChangeLog
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@ -1,3 +1,9 @@
2001-05-15 Martin Grabmueller <mgrabmue@cs.tu-berlin.de>
* boot-9.scm (cond-expand-features): Made the feature list public,
so it can be manipulated by `use-srfis'.
(use-srfis): New procedure.
2001-05-15 Thien-Thi Nguyen <ttn@revel.glug.org>
* boot-9.scm (resolve-interface): Signal error now also if

26
ice-9/boot-9.scm
View file

@ -2721,15 +2721,15 @@
;;;
;;; Currently, the following feature identifiers are supported:
;;;
;;; guile r5rs srfi-0 srfi-6
;;; guile r5rs srfi-0
;;;
;;; Remember to update the features list when adding more SRFIs.
(define-macro (cond-expand clause . clauses)
(define cond-expand-features
;; Adjust the above comment when changing this.
'(guile r5rs srfi-0))
(define features
;; Adjust the above comment when changing this.
'(guile r5rs srfi-0 srfi-6))
(define-macro (cond-expand clause . clauses)
(let ((clauses (cons clause clauses))
(syntax-error (lambda (cl)
@ -2739,7 +2739,7 @@
(lambda (clause)
(cond
((symbol? clause)
(memq clause features))
(memq clause cond-expand-features))
((pair? clause)
(cond
((eq? 'and (car clause))
@ -2785,6 +2785,20 @@
(else
(lp (cdr c))))))))
;; This procedure gets called from the startup code with a list of
;; numbers, which are the numbers of the SRFIs to be loaded on startup.
;;
(define (use-srfis srfis)
(let lp ((s srfis))
(if (pair? s)
(let* ((srfi (string->symbol
(string-append "srfi-" (number->string (car s)))))
(mod (resolve-interface (list 'srfi srfi))))
(module-use! (current-module) mod)
(set! cond-expand-features
(append cond-expand-features (list srfi)))
(lp (cdr s))))))
;;; {Load emacs interface support if emacs option is given.}