yasnippet compatible?

[Pitometsu]

I have

(setq company-backends
      '(company-files
        company-keywords
        company-capf
        company-yasnippet
        company-abbrev
        company-dabbrev
        company-dabbrev-code))

and

(defun company-sourcekit-init ()
  "Enable sourcekit backend for company."
  (eval-after-load 'company
    '(add-to-list
      (make-local-variable 'company-backends)
      'company-sourcekit)))

(add-hook 'swift-mode-hook 'company-sourcekit-init)

so, company-sourcekit mostly works for now. But company-yasnippet work only when I manually call M-x company-yasnippet. General company-complete or show sourcekit variants only, or do just nothing at all.

[Pitometsu]

UPD: in case of

import Foundation

var ⬛

Where ⬛ is point, it show all the completions for yasnippet. But. Without var it do nothing.

[nathankot]

Hmm what's the output of M-x describe-variable <RET> company-backends <RET>?

[Pitometsu]

company-backends is a variable defined in ‘company.el’. Its value is shown below.

This variable is safe as a file local variable if its value satisfies the predicate ‘company-safe-backends-p’.

Documentation: TL;TD

Value:

(company-sourcekit company-files company-keywords company-capf company-yasnippet company-abbrev company-dabbrev company-dabbrev-code)

Original value was

(company-bbdb company-nxml company-css company-eclim company-semantic company-clang company-xcode company-cmake company-capf company-files
              (company-dabbrev-code company-gtags company-etags company-keywords)
              company-oddmuse company-dabbrev)

Local in buffer the-buffer-name.swift; global value is

(company-files company-keywords company-capf company-yasnippet company-abbrev company-dabbrev company-dabbrev-code)

-U:%%- *Help* Top (1,0) (Help) ---------------------------------------------------------

[nathankot]

@Pitometsu try putting company-sourcekit at the end of that list :) In general most source-specific completers will work better at the tail of the stack

[Pitometsu]

@nathankot, thank you for explanation, it works now!

[Pitometsu]

@nathankot one more question here:

This solution works with yasnippet backend. So, when it have to snippets to complete, sourcekit backend will start as fallback.

---

But when I add also company-keywoards or company-dabbrew-code, they are usually have too much completions and will newer loose. So sourcekit will never start. On the other hand, if I put sourcekit before, it will never release completion for other backends.

You see, where is the problem? If there's even no candidates, sourcekit do not let company-completion fallback to other backens. If previous backends have too much variants, it even don't start to make requests.

---

My current configuration:

(setq company-echo-delay 0)
(setq company-backends
      '((company-yasnippet
         company-etags
         company-keywords
         company-capf
         company-dabbrev-code
         company-files
         company-abbrev
         company-dabbrev)))
(defun company-sourcekit-init ()
  "Enable sourcekit backend for company."
  (eval-after-load 'company
    '(add-to-list
      ;    vvvvv
      ;    if uncomment, it will not even start
      ;; (last (make-local-variable 'company-backends))
      ;    now it mute other backends even if have no variants
      (make-local-variable 'company-backends)
      ;    ^^^^^
      'company-sourcekit t))
  (eval-after-load 'company-keywords
    '(add-to-list 'company-keywords-alist
                  '(swift-mode "true" "false" "nil" "available" "column" "elseif" "else" "endif" "file" "function" "if" "line" "selector" "associatedtype" "class" "deinit" "enum" "extension" "fileprivate" "func" "import" "init" "inout" "internal" "let" "open" "operator" "private" "protocol" "public" "static" "struct" "subscript" "typealias" "var" "break" "case" "continue" "default" "defer" "do" "else" "fallthrough" "for" "guard" "if" "in" "repeat" "return" "switch" "where" "while" "as" "catch" "dynamicType" "is" "rethrows" "super" "self" "Self" "throws" "throw" "try" "Protocol" "Type" "and" "assignment" "associativity" "convenience" "didSet" "dynamic" "final" "get" "higherThan" "indirect" "infix" "lazy" "left" "lowerThan" "mutating" "none" "nonmutating" "optional" "override" "postfix" "precedence" "precedencegroup" "prefix" "required" "right" "set" "unowned" "weak" "willSet"))))
(add-hook 'swift-mode-hook 'company-sourcekit-init)