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authorJose Antonio Ortega Ruiz <jao@gnu.org>2009-04-26 13:50:35 +0200
committerJose Antonio Ortega Ruiz <jao@gnu.org>2009-04-26 13:50:35 +0200
commitdf593e60b078759d88daf98c18112821fe70a8a7 (patch)
tree614179cbd7a258d5029712cfd4cf2545591a98f2 /scheme/plt/geiser.ss
parentad873e433af602e66ae1ca6da3cc07309b998879 (diff)
downloadgeiser-chez-df593e60b078759d88daf98c18112821fe70a8a7.tar.gz
geiser-chez-df593e60b078759d88daf98c18112821fe70a8a7.tar.bz2
PLT support: basic startup and evaluation working.
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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