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;; geiser-company.el -- integration with company-mode
;; Copyright (C) 2009 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: Mon Aug 24, 2009 12:44
(require 'geiser-autodoc)
(require 'geiser-completion)
(require 'geiser-edit)
(require 'geiser-base)
;;; Helpers:
(make-variable-buffer-local
(defvar geiser-company--enabled-flag nil))
(make-variable-buffer-local
(defvar geiser-company--autodoc-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)
(or (geiser-autodoc--autodoc (list (list (intern id) 0)) t)
(format "%s [local id]" id)))))
(defsubst geiser-company--doc-buffer (id module)
nil)
(defun geiser-company--location (id module)
(ignore-errors
(let ((id (intern id)))
(save-excursion
(if module
(geiser-edit-module id 'noselect)
(geiser-edit-symbol id 'noselect))))))
(defun geiser-company--prefix-at-point (module)
(when geiser-company--enabled-flag
(cond ((nth 8 (syntax-ppss)) 'stop)
((looking-at-p "\\_>") (geiser-completion--prefix module))
(module 'stop)
(t nil))))
;;; Activation
(defun geiser-company--setup (enable)
(setq geiser-company--enabled-flag enable)
(when (fboundp 'geiser-company--setup-company)
(geiser-company--setup-company enable)))
(defun geiser-company--inhibit-autodoc (ignored)
(when (setq geiser-company--autodoc-flag geiser-autodoc-mode)
(geiser-autodoc-mode -1)))
(defun geiser-company--restore-autodoc (&optional ignored)
(when geiser-company--autodoc-flag
(geiser-autodoc-mode 1)))
;;; 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
(defun geiser-company--setup-company (enable)
(set (make-local-variable 'company-default-lighter) "/C")
(set (make-local-variable 'company-echo-delay) 0.01)
(company-mode nil)
(when enable (company-mode enable)))
(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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