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;;; Repl common routines
;; Copyright (C) 2001 Free Software Foundation, Inc.
;; This program 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 2, or (at your option)
;; any later version.
;;
;; This program 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; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Code:
(define-module (system repl common)
:use-module (oop goops)
:use-syntax (system base syntax)
:use-module (system base compile)
:use-module (system base language)
:use-module (system vm core)
:use-module (system vm trace))
;;;
;;; Repl type
;;;
(define-vm-class <repl> () env options tm-stats gc-stats vm-stats)
(define repl-default-options
'((trace . #f)))
(define-public (make-repl lang)
(let ((cenv (make-cenv :vm (the-vm)
:language (lookup-language lang)
:module (current-module))))
(make <repl>
:env cenv
:options repl-default-options
:tm-stats (times)
:gc-stats (gc-stats)
:vm-stats (vm-stats cenv.vm))))
(define-public (repl-welcome repl)
(format #t "~A interpreter ~A on Guile ~A\n"
repl.env.language.title repl.env.language.version (version))
(display "Copyright (C) 2001 Free Software Foundation, Inc.\n\n")
(display "Enter `,help' for help.\n"))
(define-public (repl-prompt repl)
(let ((module-name (car (last-pair (module-name repl.env.module)))))
(format #t "~A@~A> " repl.env.language.name module-name)
(force-output)))
(define-public (repl-read repl)
(repl.env.language.reader))
(define-public (repl-compile repl form . opts)
(apply compile-in form repl.env.module repl.env.language opts))
(define-public (repl-eval repl form)
(let ((eval repl.env.language.evaluator))
(if eval
(eval form repl.env.module)
(vm-load repl.env.vm (repl-compile repl form)))))
(define-public (repl-print repl val)
(if (not (eq? val *unspecified*))
(begin
(repl.env.language.printer val)
(newline))))
(define-public (repl-option-ref repl key)
(assq-ref repl.options key))
(define-public (repl-option-set! repl key val)
(set! repl.options (assq-set! repl.options key val)))
;;;
;;; Utilities
;;;
(define-public (puts x) (display x) (newline))
(define-public (->string x)
(object->string x display))
(define-public (user-error msg . args)
(throw 'user-error #f msg args #f))
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