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;; geiser.ss -- top level entry point
;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
;; Start date: Sat Apr 25, 2009 22:36
;; This file is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3 of the License, or
;; (at your option) any later version.
;; This file 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 General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Comentary:
;; Top level REPL definitions for Geiser.
;;; Code:
(module geiser scheme
(provide geiser/eval
geiser/compile
geiser/autodoc
geiser/format-error
geiser/set-result!
geiser/make-repl-reader)
(compile-enforce-module-constants #f)
(require scheme/enter scheme/string scheme/port)
(define (ensure-module spec)
(cond ((symbol? spec) spec)
((not (string? spec)) #f)
((not (file-exists? spec)) #f)
((absolute-path? spec) `(file ,spec))
(else spec)))
(define (exn-key e)
(vector-ref (struct->vector e) 0))
(define last-result (void))
(define (geiser/format-error e)
(set! last-result `((error (key . ,(exn-key e))
(subr)
(msg . ,(exn-message e))))))
(define (geiser/set-result! v)
(set! last-result `((result ,v))))
(define nowhere (open-output-nowhere))
(define (geiser/eval form spec)
(geiser/set-result! (void))
(parameterize ((current-error-port nowhere))
(eval #`(enter! #,(ensure-module spec))))
(with-handlers ((exn? (dynamic-require ''geiser 'geiser/format-error)))
((dynamic-require ''geiser 'geiser/set-result!) (eval form)))
(enter! #f)
last-result)
(define geiser/compile geiser/eval)
(define (geiser/autodoc . x) #f)
(define prompt (make-parameter "mzscheme@(geiser)"))
(define (geiser/make-repl-reader builtin-reader)
(lambda ()
(display (prompt))
(builtin-reader))))
(require 'geiser)
(current-prompt-read
(let ([old (current-prompt-read)])
(lambda ()
(current-prompt-read
((dynamic-require ''geiser 'geiser/make-repl-reader) old)))))
;;; geiser.ss ends here
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