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;;; guile-emacs.scm --- Guile Emacs interface
;; Copyright (C) 2001 Keisuke Nishida <kxn30@po.cwru.edu>
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free
;;;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
;;;; 02111-1307 USA
;;; Code:
(use-modules (ice-9 regex))
(use-modules (ice-9 channel))
(use-modules (ice-9 session))
(use-modules (ice-9 documentation))
;;;
;;; Emacs Lisp channel
;;;
(define (emacs-lisp-channel)
(define (native-type? x)
(or (integer? x) (symbol? x) (string? x) (pair? x) (vector? x)))
(define (emacs-lisp-print ch val)
(cond
((unspecified? val))
((eq? val #t) (channel-print-value ch 't))
((or (eq? val #f) (null? val)) (channel-print-value ch 'nil))
((native-type? val) (channel-print-value ch val))
(else (channel-print-token ch val))))
(channel-open (make-object-channel emacs-lisp-print)))
;;;
;;; Scheme channel
;;;
(define (emacs-scheme-channel)
(define (print ch val) (channel-print-value ch (object->string val)))
(channel-open (make-object-channel print)))
;;;
;;; for guile-import and guile-import-module
;;;
(define (guile-emacs-export-procedure name proc docs)
(define (procedure-arity proc)
(assq-ref (procedure-properties proc) 'arity))
(define (procedure-args proc)
(let ((source (procedure-source proc)))
(if source
;; formals -> emacs args
(let loop ((formals (cadr source)))
(cond
((null? formals) '())
((symbol? formals) `(&rest ,formals))
(else (cons (car formals) (loop (cdr formals))))))
;; arity -> emacs args
(let* ((arity (procedure-arity proc))
(nreqs (car arity))
(nopts (cadr arity))
(restp (caddr arity)))
(define (nsyms n)
(if (= n 0) '() (cons (gensym "a") (nsyms (1- n)))))
(append! (nsyms nreqs)
(if (> nopts 0) (cons '&optional (nsyms nopts)) '())
(if restp (cons '&rest (nsyms 1)) '()))))))
(define (procedure-call name args)
(let ((restp (memq '&rest args))
(args (delq '&rest (delq '&optional args))))
(if restp
`('apply ',name ,@args)
`(',name ,@args))))
(let ((args (procedure-args proc))
(docs (and docs (object-documentation proc))))
`(defun ,name ,args
,@(if docs (list docs) '())
(guile-lisp-flat-eval ,@(procedure-call (procedure-name proc) args)))))
(define (guile-emacs-export proc-name func-name docs)
(let ((proc (module-ref (current-module) proc-name)))
(guile-emacs-export-procedure func-name proc docs)))
(define (guile-emacs-export-procedures module-name docs)
(define (module-public-procedures name)
(hash-fold (lambda (s v d)
(let ((val (variable-ref v)))
(if (procedure? val) (acons s val d) d)))
'() (module-obarray (resolve-interface name))))
`(progn ,@(map (lambda (n+p)
(guile-emacs-export-procedure (car n+p) (cdr n+p) docs))
(module-public-procedures module-name))))
;;;
;;; for guile-scheme-complete-symbol
;;;
(define (guile-emacs-complete-alist str)
(sort! (apropos-fold (lambda (module name val data)
(cons (list (symbol->string name)
(cond ((procedure? val) " <p>")
((macro? val) " <m>")
(else "")))
data))
'() (string-append "^" (regexp-quote str))
apropos-fold-all)
(lambda (p1 p2) (string<? (car p1) (car p2)))))
;;;
;;; for guile-scheme-apropos
;;;
(define (guile-emacs-apropos regexp)
(with-output-to-string (lambda () (apropos regexp))))
;;;
;;; for guile-scheme-describe
;;;
(define (guile-emacs-describe sym)
(object-documentation (eval sym (current-module))))
;;;
;;; Guile 1.4 compatibility
;;;
(define object->string
(if (defined? 'object->string)
object->string
(lambda (x) (format #f "~S" x))))
;;; guile-emacs.scm ends here
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