my-emacs-d/elpa/company-0.8.12/company-yasnippet.el

105 lines
3.5 KiB
EmacsLisp

;;; company-yasnippet.el --- company-mode completion back-end for Yasnippet
;; Copyright (C) 2014 Free Software Foundation, Inc.
;; Author: Dmitry Gutov
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'company)
(require 'cl-lib)
(declare-function yas--table-hash "yasnippet")
(declare-function yas--get-snippet-tables "yasnippet")
(declare-function yas-expand-snippet "yasnippet")
(declare-function yas--template-content "yasnippet")
(declare-function yas--template-expand-env "yasnippet")
(defun company-yasnippet--candidates (prefix)
(cl-mapcan
(lambda (table)
(let ((keyhash (yas--table-hash table))
res)
(when keyhash
(maphash
(lambda (key value)
(when (and (stringp key)
(string-prefix-p prefix key))
(maphash
(lambda (name template)
(push
(propertize key
'yas-annotation name
'yas-template template)
res))
value)))
keyhash))
res))
(yas--get-snippet-tables)))
;;;###autoload
(defun company-yasnippet (command &optional arg &rest ignore)
"`company-mode' back-end for `yasnippet'.
This back-end should be used with care, because as long as there are
snippets defined for the current major mode, this back-end will always
shadow back-ends that come after it. Recommended usages:
* In a buffer-local value of `company-backends', grouped with a back-end or
several that provide actual text completions.
(add-hook 'js-mode-hook
(lambda ()
(set (make-local-variable 'company-backends)
'((company-dabbrev-code company-yasnippet)))))
* After keyword `:with', grouped with other back-ends.
(push '(company-semantic :with company-yasnippet) company-backends)
* Not in `company-backends', just bound to a key.
(global-set-key (kbd \"C-c y\") 'company-yasnippet)
"
(interactive (list 'interactive))
(cl-case command
(interactive (company-begin-backend 'company-yasnippet))
(prefix
;; Should probably use `yas--current-key', but that's bound to be slower.
;; How many trigger keys start with non-symbol characters anyway?
(and (bound-and-true-p yas-minor-mode)
(company-grab-symbol)))
(annotation
(concat
(unless company-tooltip-align-annotations " -> ")
(get-text-property 0 'yas-annotation arg)))
(candidates (company-yasnippet--candidates arg))
(post-completion
(let ((template (get-text-property 0 'yas-template arg)))
(yas-expand-snippet (yas--template-content template)
(- (point) (length arg))
(point)
(yas--template-expand-env template))))))
(provide 'company-yasnippet)
;;; company-yasnippet.el ends here