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;; geiser-larceny.el -- larceny's implementation of the geiser protocols
;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
;; Start date: Sun Mar 15, 2009 03:08
;; 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:
;; Implementation of all required Elisp Geiser protocols for Larceny.
;;; Code:
(require 'geiser-eval)
(require 'geiser-impl)
(require 'geiser-syntax)
(require 'geiser-custom)
(require 'geiser-base)
;;; Customization:
(defgroup geiser-larceny nil
"Customization for Geiser's Larceny flavour."
:group 'geiser)
(defcustom geiser-larceny-binary
(cond ((eq system-type 'windows-nt) "larceny.exe")
((eq system-type 'darwin) "larceny")
(t "larceny"))
"Name to use to call the Larceny executable when starting a REPL."
:type 'string
:group 'geiser-larceny)
(defcustom geiser-larceny-mode 'err5rs
"Mode to use when starting the Larceny REPL."
:type '(choice (const :tag "ERR5RS" err5rs)
(const :tag "R5RS" 'r5rs))
:group 'geiser-larceny)
;;; REPL support:
(defun geiser-larceny-parameters ()
"Return a list with all parameters needed to start Larceny."
`(,(if (eq 'r5rs geiser-larceny-mode) "-r5rs" "-err5rs")
"-path" ,(expand-file-name "larceny/" geiser-scheme-dir)))
(defconst geiser-larceny-prompt-regexp "^\\(debug\\)?> ")
(defun geiser-larceny--startup ()
(when (eq 'err5rs geiser-larceny-mode)
(geiser-eval--send/wait '(import (rnrs))))
(geiser-eval--send/wait '(require (geiser))))
(defun switch-to-larceny (&optional ask)
(interactive "P")
(switch-to-geiser ask 'larceny))
(defun run-larceny ()
"Run Geiser using Larceny."
(interactive)
(run-geiser 'larceny))
;;; Evaluation support:
(defun geiser-larceny-geiser-procedure (proc)
"Translate a bare procedure symbol to one executable in Larceny's
context. Return NULL for unsupported ones; at the very least,
EVAL, COMPILE, LOAD-FILE and COMPILE-FILE should be supported."
(intern (format "ge:%s" proc)))
(defconst geiser-larceny--module-re
"(library +\\(([^)]+)\\)")
(defun geiser-larceny-get-module (&optional module)
"Return a scheme datum representing the current module.
If MODULE is provided, transform it to such a datum."
(cond ((null module)
(save-excursion
(goto-char (point-min))
(if (re-search-forward geiser-larceny--module-re nil t)
(geiser-larceny-get-module (match-string-no-properties 1))
:f)))
((listp module) module)
((stringp module) (or (ignore-errors (car (read-from-string module))) :f))
(t :f)))
;;; Trying to ascertain whether a buffer is Larceny Scheme:
(defun geiser-larceny-guess ()
"Return `t' if the current buffer looks like a Larceny file."
(listp (geiser-larceny-get-module)) t)
;;; Register this implementation:
(geiser-impl--register 'larceny)
(provide 'geiser-larceny)
;;; geiser-larceny.el ends here
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