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authorJose Antonio Ortega Ruiz <jao@gnu.org>2009-03-09 23:52:04 +0100
committerJose Antonio Ortega Ruiz <jao@gnu.org>2009-03-09 23:52:04 +0100
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Support for multiple Scheme implementations, Chapter 1.
* Evaluation system is now pluggable * The rest of the system understands said pluggability * Guile provides its own implementation (geiser-guile) * The reload system is aware of the new kids on the block
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+;; geiser-guile.el -- guile'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 08, 2009 23:03
+
+;; 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 Guile.
+
+;;; Code:
+
+(require 'geiser-impl)
+(require 'geiser-syntax)
+(require 'geiser-custom)
+(require 'geiser-base)
+
+
+;;; Customization:
+
+(defgroup geiser-guile nil
+ "Customization for Geiser's Guile flavour."
+ :group 'geiser)
+
+(defcustom geiser-guile-binary
+ (cond ((eq system-type 'windows-nt) "guile.exe")
+ ((eq system-type 'darwin) "guile")
+ (t "guile"))
+ "Name to use to call the Guile executable when starting a REPL."
+ :type 'string
+ :group 'geiser-guile)
+
+(defcustom geiser-guile-init-file "~/.guile-geiser"
+ "Initialization file with user code for the Guile REPL."
+ :type 'string
+ :group 'geiser-guile)
+
+
+;;; REPL support:
+
+(defun geiser-guile-parameters ()
+ "Return a list with all parameters needed to start Guile.
+This function uses `geiser-guile-init-file' if it exists."
+ (let ((init-file (and (stringp geiser-guile-init-file)
+ (expand-file-name geiser-guile-init-file))))
+ `("-p" "-L" ,(expand-file-name "guile/" geiser-scheme-dir)
+ ,@(and init-file (file-readable-p init-file) (list "-l" init-file)))))
+
+(defconst geiser-guile-prompt-regexp "^[^() \n]+@([^)]*?)> ")
+
+
+;;; Evaluation support:
+
+(defun geiser-guile-geiser-procedure (proc)
+ "Translate a bare procedure symbol to one executable in Guile's
+context. Return NULL for unsupported ones; at the very least,
+EVAL, COMPILE, LOAD-FILE and COMPILE-FILE should be supported."
+ (let ((proc (intern (format "ge:%s" proc))))
+ `(@ (geiser emacs) ,proc)))
+
+(defconst geiser-guile--module-re
+ "(define-module +\\(([^)]+)\\)")
+
+(defun geiser-guile-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-guile--module-re nil t)
+ (geiser-guile-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 Guile Scheme:
+
+(defun geiser-guile-guess ()
+ "Return `t' if the current buffer looks like a Guile file."
+ (and (geiser-guile-get-module) t))
+
+
+;;; Register this implementation:
+
+(geiser-impl--register 'guile)
+
+
+(provide 'geiser-guile)
+;;; geiser-guile.el ends here