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authorJose Antonio Ortega Ruiz <jao@gnu.org>2010-11-13 02:07:19 +0100
committerJose Antonio Ortega Ruiz <jao@gnu.org>2010-11-13 02:07:19 +0100
commit1853b281918ea8c6e143ed1cfe1950189956d076 (patch)
tree468b3cecd6a6af28944cee9ce903a872b1fc6247 /elisp/geiser-inf.el
parent6e9d4a346b4a947259b564063c0c3186e51670e0 (diff)
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Superior schemes
Inferior schemes weren't really a good idea, were they? With remote connections one can launch an external scheme to debug Geiser anyway. And everything is (ahem, will be) simpler when we add new implementations.
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-;;; geiser-inf.el -- inferior scheme processes
-
-;; Copyright (c) 2010 Jose Antonio Ortega Ruiz
-
-;; This program is free software; you can redistribute it and/or
-;; modify it under the terms of the Modified BSD License. You should
-;; have received a copy of the license along with this program. If
-;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
-
-;; Start date: Thu Nov 11, 2010 01:04
-
-
-(require 'geiser-impl)
-(require 'geiser-base)
-
-(require 'cmuscheme)
-
-
-;; Implementation-dependent parameters
-
-(geiser-impl--define-caller geiser-inf--binary binary ()
- "A variable or function returning the path to the scheme binary
-for this implementation.")
-
-(geiser-impl--define-caller geiser-inf--arglist arglist ()
- "A function taking no arguments and returning a list of
-arguments to be used when invoking the scheme binary.")
-
-(geiser-impl--define-caller geiser-inf--prompt-re inferior-prompt-regexp ()
- "A variable (or thunk returning a value) giving the regular
-expression for this implementation's inferior scheme prompt. By default,
-cmuscheme's prompt regexp will be used.")
-
-(geiser-impl--define-caller geiser-inf--init-server-cmd init-server-command ()
- "A variable (or thunk returning a value) giving the REPL server
-initialization command for local processes. The command must return a
-list of the form (server PORT).")
-
-
-;; Auxiliary functions
-
-(defun geiser-inf--wait-for-prompt (timeout)
- (let ((p (point)) (seen) (buffer (current-buffer)))
- (while (and (not seen)
- (> timeout 0)
- (get-buffer-process buffer))
- (sleep-for 0.1)
- (setq timeout (- timeout 100))
- (goto-char p)
- (setq seen (re-search-forward comint-prompt-regexp nil t)))
- (goto-char (point-max))
- (unless seen (error "%s" "No prompt found!"))))
-
-(defun geiser-inf--make-buffer (impl)
- (with-current-buffer (generate-new-buffer (format " * inferior %s *" impl))
- (inferior-scheme-mode)
- (current-buffer)))
-
-(defun geiser-inf--sentinel (proc evnt)
- (let ((buff (process-buffer proc)))
- (when (buffer-live-p buff) (kill-buffer buff))))
-
-
-;; Starting an inferior REPL
-
-(defun geiser-inf--run-scheme (impl)
- (let ((bin (geiser-inf--binary impl))
- (args (geiser-inf--arglist impl))
- (prompt-rx (geiser-inf--prompt-re impl)))
- (unless (and bin args)
- (error "Sorry, I don't know how to start %s" impl))
- (with-current-buffer (geiser-inf--make-buffer impl)
- (when prompt-rx comint-prompt-regexp prompt-rx)
- (condition-case err
- (apply 'make-comint-in-buffer
- `(,(buffer-name) ,(current-buffer) ,bin nil ,@args))
- (error (error "Error starting inferior %s REPL: %s"
- impl (error-message-string err))))
- (geiser-inf--wait-for-prompt 10000)
- (set-process-sentinel (get-buffer-process (current-buffer))
- 'geiser-inf--sentinel)
- (cons (current-buffer)
- (comint-redirect-results-list (geiser-inf--init-server-cmd impl)
- "(port \\([0-9]+\\))"
- 1)))))
-
-
-(provide 'geiser-inf)
-