From 91841a63fb0cf3c8a0a6ed1e9086b72097cd44e4 Mon Sep 17 00:00:00 2001
From: Jose Antonio Ortega Ruiz <jao@gnu.org>
Date: Tue, 25 Aug 2009 01:58:55 +0200
Subject: Now this is cool: support for company mode.

---
 elisp/geiser-company.el | 111 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 elisp/geiser-company.el

(limited to 'elisp/geiser-company.el')

diff --git a/elisp/geiser-company.el b/elisp/geiser-company.el
new file mode 100644
index 0000000..8ae8969
--- /dev/null
+++ b/elisp/geiser-company.el
@@ -0,0 +1,111 @@
+;; geiser-company.el -- integration with company-mode
+
+;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
+
+;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
+;; Start date: Mon Aug 24, 2009 12:44
+
+;; 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/>.
+
+;;; Code:
+
+(require 'geiser-autodoc)
+(require 'geiser-completion)
+(require 'geiser-edit)
+(require 'geiser-base)
+
+
+;;; Helpers:
+
+(make-variable-buffer-local
+ (defvar geiser-company--enabled-flag nil))
+
+(defsubst geiser-company--candidates (prefix module)
+  (car (geiser-completion--complete prefix module)))
+
+(defsubst geiser-company--doc (id module)
+  (ignore-errors
+    (if module
+	(format "%s [module]" id)
+      (geiser-autodoc--autodoc (list (list (intern id) 0))))))
+
+(defsubst geiser-company--doc-buffer (id module)
+  nil)
+
+(defun geiser-company--location (id module)
+  (ignore-errors
+    (let ((id (intern id)))
+      (save-current-buffer
+	(if module (geiser-edit-module id) (geiser-edit-symbol id))
+	(cons (current-buffer) (point))))))
+
+(defsubst geiser-company--prefix-at-point (module)
+  (and geiser-company--enabled-flag
+       (looking-at-p "\\_>")
+       (not (nth 8 (syntax-ppss)))
+       (geiser-completion--prefix module)))
+
+
+;;; Activation
+
+(defun geiser-company--setup (enable)
+  (setq geiser-company--enabled-flag enable)
+  (when (fboundp 'company-mode)
+    (company-mode nil)
+    (when enable (company-mode enable)))
+  (when (boundp 'company-lighter)
+    (setq company-lighter "/C")))
+
+(defun geiser-company--inhibit-autodoc (ignored)
+  (setq geiser-autodoc--inhibit-flag t))
+
+(defun geiser-company--restore-autodoc (&optional ignored)
+  (setq geiser-autodoc--inhibit-flag nil))
+
+
+;;; Backends:
+(defmacro geiser-company--make-backend (name mod)
+  `(defun ,name (command &optional arg &rest ignored)
+     "A `company-mode' completion back-end for `geiser-mode'."
+     (interactive (list 'interactive))
+     (case command
+       ('interactive (company-begin-backend ',name))
+       ('prefix (geiser-company--prefix-at-point ,mod))
+       ('candidates (geiser-company--candidates arg ,mod))
+       ('meta (geiser-company--doc arg ,mod))
+       ('doc-buffer (geiser-company--doc-buffer arg ,mod))
+       ('location (geiser-company--location arg ,mod))
+       ('sorted t))))
+
+(defvar geiser-company--backend '(company-geiser-ids company-geiser-modules))
+
+(eval-after-load "company"
+  '(progn
+     (geiser-company--make-backend company-geiser-ids nil)
+     (geiser-company--make-backend company-geiser-modules t)
+     (add-to-list 'company-backends geiser-company--backend)
+     (add-hook 'company-completion-finished-hook 'geiser-company--restore-autodoc)
+     (add-hook 'company-completion-cancelled-hook 'geiser-company--restore-autodoc)
+     (add-hook 'company-completion-started-hook 'geiser-company--inhibit-autodoc)))
+
+
+;;; Reload support:
+
+(defun geiser-company-unload-function ()
+  (when (boundp 'company-backends)
+    (setq company-backends (remove geiser-company--backend company-backends))))
+
+
+(provide 'geiser-company)
+;;; geiser-company.el ends here
-- 
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