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tabnine.el
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;;; tabnine.el --- An unofficial TabNine package for Emacs ;; -*- lexical-binding: t -*-
;;
;; Copyright (c) 2023 Tommy Xiang, John Gong, Aaron Ji
;;
;; Author: Tommy Xiang <[email protected]>
;; John Gong <[email protected]>
;; Aaron Ji <[email protected]>
;; Keywords: convenience
;; Version: 0.0.1
;; URL: https://github.com/shuxiao9058/tabnine/
;; Package-Requires: ((emacs "25") (cl-lib "0.5") (dash "2.16.0") (s "1.12.0") (editorconfig "0.9.1"))
;;
;; Permission is hereby granted, free of charge, to any person obtaining a copy
;; of this software and associated documentation files (the "Software"), to deal
;; in the Software without restriction, including without limitation the rights
;; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
;; copies of the Software, and to permit persons to whom the Software is
;; furnished to do so, subject to the following conditions:
;;
;; The above copyright notice and this permission notice shall be included in all
;; copies or substantial portions of the Software.
;;
;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
;; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
;; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
;; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
;; SOFTWARE.
;;
;; Commentary:
;;
;; Description:
;;
;; An unofficial TabNine package for Emacs.
;;
;; Installation:
;;
;; 1. Enable `tabnine-mode` in `prog-mode`.
;; (add-to-list 'prog-mode-hook #'tabnine-mode)
;; 2. Run M-x tabnine-install-binary to install the TabNine binary for your system.
;;
;; Usage:
;;
;; See M-x customize-group RET tabnine RET for customizations.
;;
;;
;;; Code:
;;
;; Dependencies
;;
(require 'cl-lib)
(require 'dash)
(require 'json)
(require 's)
(require 'url)
(require 'editorconfig)
;;
;; Constants
;;
(defconst tabnine--process-name "tabnine")
(defconst tabnine--buffer-name "*tabnine-log*")
(defconst tabnine--hooks-alist nil)
(defconst tabnine--api-version "4.4.223"
"TabNine api version.")
(defconst tabnine-version "0.0.1"
"TabNine version.")
;; tmp file put in tabnine-binaries-folder directory
(defconst tabnine--version-tempfile "version")
(defconst tabnine--indentation-alist
(append '((latex-mode tex-indent-basic)
(nxml-mode nxml-child-indent)
(python-mode python-indent py-indent-offset python-indent-offset)
(python-ts-mode python-indent py-indent-offset python-indent-offset)
(web-mode web-mode-markup-indent-offset web-mode-html-offset))
editorconfig-indentation-alist)
"Alist of `major-mode' to indentation map with optional fallbacks.")
;;
;; Macros
;;
(eval-and-compile
(defun tabnine--transform-pattern (pattern)
"Transform PATTERN to (&plist PATTERN) recursively."
(cons '&plist
(mapcar (lambda (p)
(if (listp p)
(tabnine--transform-pattern p)
p))
pattern))))
(defmacro tabnine--dbind (pattern source &rest body)
"Destructure SOURCE against plist PATTERN and eval BODY."
(declare (indent 2))
`(-let ((,(tabnine--transform-pattern pattern) ,source))
,@body))
;;
;; Customization
;;
(defgroup tabnine nil
"Options for tabnine."
:link '(url-link :tag "Github" "https://github.com/shuxiao9058/tabnine")
:group 'company
:prefix "tabnine-")
(defcustom tabnine-idle-delay 0.1
"Time in seconds to wait before starting completion. Complete immediately if set to 0."
:type 'float
:group 'tabnine)
(defcustom tabnine-max-num-results 5
"Maximum number of results to show."
:group 'tabnine
:type 'integer)
(defcustom tabnine-context-char-limit-before 100000
"The number of chars before point to send for completion."
:group 'tabnine
:type 'integer)
(defcustom tabnine-context-char-limit-after 100000
"The number of chars after point to send for completion."
:group 'tabnine
:type 'integer)
(defcustom tabnine-minimum-prefix-length 3
"The minimum prefix length for idle completion."
:group 'tabnine
:type 'integer)
(defcustom tabnine-clear-overlay-ignore-commands nil
"List of commands that should not clear the overlay when called."
:group 'tabnine
:type '(repeat function))
(defcustom tabnine-max-consecutive-restart-count 10
"Maximum number of times TabNine can consecutively restart.
This may be due to errors in or automatic server updates.
Any successful completion will reset the consecutive count."
:group 'tabnine
:type 'integer)
(defcustom tabnine-wait 1.0
"Number of seconds to wait for TabNine to respond."
:group 'tabnine
:type 'float)
(defcustom tabnine-binaries-folder "~/.TabNine"
"Path to TabNine binaries folder.
`tabnine-install-binary' will use this directory."
:group 'tabnine
:type 'string)
(defcustom tabnine-install-static-binary (file-exists-p "/etc/nixos/hardware-configuration.nix")
"Whether to install the musl-linked static binary instead of the standard glibc-linked dynamic binary.
Only useful on GNU/Linux. Automatically set if NixOS is detected."
:group 'tabnine
:type 'boolean)
(defcustom tabnine-log-file-path nil
"If non-nil, next TabNine restart will write debug log to this path."
:group 'tabnine
:type 'string)
(defcustom tabnine-debug-file-path nil
"If non-nil, will log debug messages to tabnine-debug-file-path named file."
:group 'tabnine
:type 'string)
(defcustom tabnine-auto-balance t
"Whether TabNine should insert balanced parentheses upon completion."
:group 'tabnine
:type 'boolean)
(defcustom tabnine-network-proxy nil
"Network proxy to use for TabNine. Nil means no proxy.
e.g.: http://user:[email protected]:7890"
:type 'string
:group 'tabnine)
;;
;; Faces
;;
;;
;; Variables
;;
(defvar tabnine-executable-args nil
"Arguments passed to TabNine.")
(defvar tabnine--process nil
"TabNine server process.")
(defvar tabnine--consecutive-restart-count 0
"Number of times TabNine server has restarted abnormally.
Resets every time successful completion is returned.")
(defvar tabnine--response nil
"Temporarily stored TabNine server responses.")
(defvar tabnine--response-chunks nil
"The string to store response chunks from TabNine server.")
(defvar-local tabnine--last-correlation-id 0
"The last correlation id send to TabNine server for completion.")
(defvar tabnine--correlation-id 0
"Correlation id send to TabNine server for completion.")
(defvar-local tabnine--overlay nil
"Overlay for TabNine completion.")
(defvar-local tabnine--completion-cache nil)
(defvar-local tabnine--completion-idx 0)
(defvar tabnine--completion-cache-result nil
"Temporarily TabNine completion cache responses.")
(defvar-local tabnine--trigger-with-capf nil
"Completion trigger with capf for TabNine.")
(defvar-local tabnine--trigger-point nil
"Completion trigger point position for TabNine.")
(defvar tabnine--post-command-timer nil)
(defvar tabnine--mutex (make-mutex "tabnine")
"Global mutex for TabNine completion.")
(defun tabnine--buffer-changed ()
"Return non-nil if buffer has changed since last time `tabnine-complete' has been invoked."
(not (= tabnine--last-correlation-id tabnine--correlation-id)))
(defmacro tabnine--json-serialize (params)
"Return PARAMS JSON serialized result."
(if (progn
(require 'json)
(fboundp 'json-serialize))
`(json-serialize ,params
:null-object nil
:false-object :json-false)
`(let ((json-false :json-false))
(json-encode ,params))))
(defmacro tabnine--read-json (str)
"Read JSON string STR. and return the decoded object."
(if (progn
(require 'json)
(fboundp 'json-parse-string))
`(json-parse-string ,str
:array-type 'array
:object-type 'plist
:null-object nil
:false-object :json-false)
`(let ((json-array-type 'vector)
(json-object-type 'plist)
(json-false nil))
(json-read-from-string ,str))))
;;
;; Agent process
;;
(defsubst tabnine--process-alivep ()
"Non-nil if the `tabnine--process' is alive."
(and tabnine--process
(process-live-p tabnine--process)))
(defmacro tabnine--send-request (request)
"Send a REQUEST to the TabNine process. REQUEST needs to be JSON-serializable object."
`(progn
(unless (tabnine--process-alivep)
(tabnine-start-process))
(when tabnine--process
(let ((encoded (concat
(tabnine--json-serialize request)
"\n")))
(setq tabnine--response nil)
;; (setq tabnine--completion-cache-result nil)
(tabnine--log-to-debug-file "Write to TabNine process" encoded)
(process-send-string tabnine--process encoded)
(accept-process-output tabnine--process tabnine-wait)))))
(defun tabnine--make-request (method)
"Create request body for method METHOD and parameters PARAMS."
(cond
((eq method 'autocomplete)
(let* ((pt (point))
(buffer-min 1)
(buffer-max (1+ (buffer-size)))
(before-point
(max (point-min) (- pt tabnine-context-char-limit-before)))
(after-point
(min (point-max) (+ pt tabnine-context-char-limit-after)))
(offset (max 0 (1- pt)))
(line (- (line-number-at-pos) 1))
(character (max 0 (- pt (line-beginning-position))))
(indentation_size (tabnine--infer-indentation-offset)))
(setq tabnine--trigger-point pt)
(list
:version tabnine--api-version
:request
(list :Autocomplete
(list
:before (buffer-substring-no-properties before-point pt)
:after (buffer-substring-no-properties pt after-point)
:filename (or (buffer-file-name) nil)
:region_includes_beginning (if (= before-point buffer-min)
t json-false)
:region_includes_end (if (= after-point buffer-max)
t json-false)
:max_num_results tabnine-max-num-results
:offset offset
:line line
:character character
:indentation_size indentation_size
:correlation_id tabnine--correlation-id)))))
((eq method 'prefetch)
(list
:version tabnine--api-version
:request
(list :Prefetch
(list
:filename (or (buffer-file-name) nil)))))
((eq method 'getidentifierregex)
(list
:version tabnine--api-version
:request
(list :GetIdentifierRegex
(list
:filename (or (buffer-file-name) nil)
))))
;; Query Capabilities
((eq method 'capabilities)
(list
:version tabnine--api-version
:request
(list :Features '(:__ t))))
((eq method 'state)
(list
:version tabnine--api-version
:request
(list :State '(:__ t))))
((eq method 'configuration)
(list
:version tabnine--api-version
:request
(list :Configuration '(:__ t))))
;; NotifyWorkspaceChanged
;; setState
;; StartupActions
;; HoverAction
))
(defun tabnine--error-no-binaries ()
"Signal error for when TabNine binary is not found."
(error "No TabNine binaries found. Run M-x tabnine-install-binary to download binaries"))
(defun tabnine--get-target ()
"Return TabNine's system configuration. Used for finding the correct binary."
(let* ((system-architecture (car (s-split "-" system-configuration)))
(tabnine-architecture
(cond
((or (string= system-architecture "aarch64")
(and (eq system-type 'darwin)
(string= system-architecture "x86_64")
;; Detect AArch64 running x86_64 Emacs
(string= (shell-command-to-string "arch -arm64 uname -m") "arm64\n")))
"aarch64")
((or (string= system-architecture "arm")
(and (eq system-type 'darwin)
(string= system-architecture "x86_64")
;; Detect AArch64 running x86_64 Emacs
(string= (shell-command-to-string "arch -arm64 uname -m") "arm64\n")))
"aarch64")
((string= system-architecture "x86_64")
"x86_64")
((string-match system-architecture "i.86")
"i686")
(t
(error "Unknown or unsupported architecture %s" system-architecture))))
(os
(cond
((or (eq system-type 'ms-dos)
(eq system-type 'windows-nt)
(eq system-type 'cygwin))
"pc-windows-gnu")
((or (eq system-type 'darwin))
"apple-darwin")
(tabnine-install-static-binary
"unknown-linux-musl")
(t
"unknown-linux-gnu"))))
(concat tabnine-architecture "-" os)))
(defun tabnine--get-exe ()
"Return TabNine's binary file name. Used for finding the correct binary."
(if (or (eq system-type 'ms-dos)
(eq system-type 'windows-nt)
(eq system-type 'cygwin))
"TabNine.exe"
"TabNine"
))
(defun tabnine--executable-path ()
"Find and return the path of the latest TabNine binary for the current system."
(let ((parent tabnine-binaries-folder))
(if (file-directory-p parent)
(let* ((children (->> (directory-files parent)
(--remove (member it '("." "..")))
(--filter (file-directory-p
(expand-file-name
it
(file-name-as-directory
parent))))
(--filter (ignore-errors (version-to-list it)))
(-non-nil)))
(sorted (nreverse (sort children #'version<)))
(target (tabnine--get-target))
(filename (tabnine--get-exe)))
(cl-loop
for ver in sorted
for fullpath = (expand-file-name (format "%s/%s/%s"
ver target filename)
parent)
if (and (file-exists-p fullpath)
(file-regular-p fullpath))
return fullpath
finally do (tabnine--error-no-binaries)))
(tabnine--error-no-binaries))))
(defun tabnine-start-process ()
"Start TabNine process."
(tabnine-kill-process)
(let ((process-environment (cl-copy-list process-environment))
(process-connection-type nil))
(when (and tabnine-network-proxy (or (s-starts-with? "http://" tabnine-network-proxy t)
(s-starts-with? "https://" tabnine-network-proxy t)))
(setq process-environment
(cl-remove-if (lambda(env) (or (s-starts-with? "HTTP_PROXY=" env t) (s-starts-with? "HTTPS_PROXY=" env t)))
process-environment))
(add-to-list 'process-environment (format "HTTPS_PROXY=%s" tabnine-network-proxy))
(add-to-list 'process-environment (format "https_proxy=%s" tabnine-network-proxy))
(add-to-list 'process-environment (format "HTTP_PROXY=%s" tabnine-network-proxy))
(add-to-list 'process-environment (format "http_proxy=%s" tabnine-network-proxy)))
(setq tabnine--process
(make-process
:name tabnine--process-name
:buffer tabnine--buffer-name
:command (append
(cons (tabnine--executable-path)
(list "--client" "emacs"))
tabnine-executable-args
(when tabnine-log-file-path
(list
"--log-file-path"
(expand-file-name
(format "%s-%d" tabnine-log-file-path (emacs-pid)))))
(list "--client-metadata"
(format "clientVersion=%s" emacs-version)
(format "pluginVersion=%s" tabnine-version)
(format "ide-restart-counter=%d" tabnine--consecutive-restart-count)))
:coding 'utf-8-emacs-unix
:connection-type 'pipe
:filter #'tabnine--process-filter
:sentinel #'tabnine--process-sentinel
:noquery t
:stderr (get-buffer-create
(format "*%s stderr*" tabnine--process-name))
)))
;; hook setup
(message "TabNine server started.")
(tabnine-capabilities)
(dolist (hook tabnine--hooks-alist)
(add-hook (car hook) (cdr hook))))
(defun tabnine-kill-process ()
"Kill TabNine process."
(interactive)
(when tabnine--process
(let ((process tabnine--process))
(setq tabnine--process nil) ; this happens first so sentinel don't catch the kill
(delete-process process)))
;; hook remove
(dolist (hook tabnine--hooks-alist)
(remove-hook (car hook) (cdr hook))))
;;
;; TabNine all operations
;;
(defmacro tabnine--request (method)
"Send TabNine `METHOD` request and get response in json."
(declare (indent 2))
`(with-mutex tabnine--mutex
(let ((request (tabnine--make-request ,method)))
(tabnine--send-request request)
tabnine--response)))
(defun tabnine-autocomplete ()
"Query TabNine server for auto-complete."
(let ((num 0)
(result))
(while (and (< num 3) (not result))
(setq result
(or (let ((cached-result (or tabnine--completion-cache-result tabnine--response)))
(when (tabnine--response-latest-completion-p cached-result)
cached-result))
(tabnine--request 'autocomplete)))
(setq num (1+ num))
(sleep-for 0.05))
result))
(defun tabnine-prefetch ()
"Prefetch buffer."
(tabnine--request 'prefetch))
(defun tabnine-capabilities ()
"Query TabNine server Capabilities."
(tabnine--request 'capabilities))
(defun tabnine-state ()
"Query TabNine Service State."
(tabnine--request 'state))
(defun tabnine-getidentifierregex ()
"Get identifier regex from TabNine server."
(tabnine--request 'getidentifierregex))
(defun tabnine-configuration ()
"Open TabNine Hub page."
(interactive)
(tabnine--request 'configuration))
;;
;; Major mode definition
;;
;;
;; Auto completion
;;
(defun tabnine--log-to-debug-file(prefix text)
"Log to TabNine debug buffer, PREFIX is log prefix and TEXT is the log body."
(when tabnine-debug-file-path
(let ((str (format "====== %s START %s ====== \n%s ====== END ======\n" (format-time-string "%Y-%m-%d %H:%M:%S" (current-time)) prefix text))
(message-log-max nil))
(with-temp-buffer
(insert str)
(write-region (point-min) (point-max) tabnine-debug-file-path t 'silent)))))
(defun tabnine--infer-indentation-offset ()
"Infer indentation offset."
(or (let ((mode major-mode))
(while (and (not (assq mode tabnine--indentation-alist))
(setq mode (get mode 'derived-mode-parent))))
(when mode
(cl-some (lambda (s)
(when (boundp s)
(symbol-value s)))
(alist-get mode tabnine--indentation-alist))))
tab-width))
(defun tabnine--process-sentinel (process event)
"Sentinel for TabNine server process.
PROCESS is the process under watch, EVENT is the event occurred."
(when (and tabnine--process
(memq (process-status process) '(exit signal)))
(message "TabNine process %s received event %s."
(prin1-to-string process)
(prin1-to-string event))
(if (>= tabnine--consecutive-restart-count
tabnine-max-consecutive-restart-count)
(progn
(message "TabNine process restart limit reached.")
(setq tabnine--process nil))
(message "Restarting TabNine process.")
(tabnine-start-process)
(setq tabnine--consecutive-restart-count
(1+ tabnine--consecutive-restart-count)))))
(defun tabnine--valid-response-p(response)
"Check whether the RESPONSE is valid completion result."
(when response
(let* ((results (plist-get response :results))
(first-completion (if (seq-empty-p results) nil (seq-elt results 0))))
(and first-completion (s-present? (plist-get first-completion :new_prefix)))
)))
(defun tabnine--invalid-completion-p(completion)
"Check if the COMPLETION is valid, some completions is stupid."
(when completion
(let ((new_prefix (plist-get completion :new_prefix))
(old_suffix (plist-get completion :old_suffix)))
(s-equals? new_prefix old_suffix))))
(defun tabnine--completion-capf-p(completion)
"Check COMPLETION is capf result."
(tabnine--dbind (:new_prefix :completion_metadata
(:kind :completion_kind)) completion
(let ((line (length (s-split "\n" (s-trim new_prefix)))))
(<= line 2)
;; (not (<= line 2))
;; (and completion_kind (not (and ;; (equal completion_kind "Snippet")
;; (> line 1) )))
)))
(defun tabnine--response-display-with-capf-p(response)
"Test RESPONSE whether display with overlay."
(when response
(let* ((display-with-overlay)
(results (plist-get response :results)))
(mapcar (lambda(x)
(unless (tabnine--completion-capf-p x)
(setq display-with-overlay t))) results)
(when (not tabnine--trigger-with-capf)
(setq display-with-overlay t))
(not display-with-overlay))))
(defun tabnine--response-latest-completion-p(response)
"Test RESPONSE if the latest completion."
(when response
(equal tabnine--correlation-id (plist-get response :correlation_id))))
(defun tabnine--filter-completions(completions)
"Filter duplicates and bad COMPLETIONS result."
(when completions
(when-let ((completions (cl-remove-duplicates completions
:key (lambda (x) (plist-get x :new_prefix))
:test #'s-equals-p))
(completions (cl-remove-duplicates completions
:key (lambda (x) (let ((new_prefix (plist-get x :new_prefix))
(new_posfix (plist-get x :new_posfix)))
(s-trim (concat new_prefix (or new_posfix "")))))
:test #'s-equals-p))
(completions (cl-remove-if #'tabnine--invalid-completion-p
completions)))
completions)))
(defun tabnine--process-filter (process output)
"Filter for TabNine server process.
PROCESS is the process under watch, OUTPUT is the output received."
(tabnine--log-to-debug-file "Read from TabNine process" output)
(push output tabnine--response-chunks)
(let* ((response
(mapconcat #'identity
(nreverse tabnine--response-chunks) nil))
(ss (s-split "\n" (s-trim response)))
str
result)
(when (and ss (> (length ss) 0))
(setq tabnine--response-chunks nil)
(setq str (car ss))
(when (s-present? str)
(setq result (tabnine--read-json str))
(setq ss (cdr ss))
(setq tabnine--response result)
(when (and result (tabnine--valid-response-p result))
(setq tabnine--completion-cache-result result)
(when (equal (point) tabnine--trigger-point)
(tabnine--show-completion-1 result)))
))))
;;
;; Interactive functions
;;
(defun tabnine-restart-server ()
"Start/Restart TabNine server."
(interactive)
(tabnine-start-process))
(defun tabnine-install-binary ()
"Install TabNine binary into `tabnine-binaries-folder'."
(interactive)
(let ((version-tempfile (concat
(file-name-as-directory
tabnine-binaries-folder)
tabnine--version-tempfile))
(target (tabnine--get-target))
(exe (tabnine--get-exe))
(binaries-dir tabnine-binaries-folder))
(message version-tempfile)
(message "Getting current version...")
(make-directory (file-name-directory version-tempfile) t)
(url-copy-file "https://update.tabnine.com/bundles/version" version-tempfile t)
(let ((version (s-trim (with-temp-buffer (insert-file-contents version-tempfile) (buffer-string)))))
(when (= (length version) 0)
(error "TabNine installation failed. Please try again"))
(message "Current version is %s" version)
(let* ((url (concat "https://update.tabnine.com/bundles/" version "/" target "/TabNine.zip"))
(version-directory (file-name-as-directory
(concat
(file-name-as-directory
(concat (file-name-as-directory binaries-dir) version)))))
(target-directory (file-name-as-directory (concat version-directory target) ))
(bundle-path (concat version-directory (format "%s.zip" target)))
(target-path (concat target-directory exe)))
(message "Installing at %s. Downloading %s ..." target-path url)
(make-directory target-directory t)
(url-copy-file url bundle-path t)
(condition-case ex
(let ((default-directory target-directory))
(if (or (eq system-type 'ms-dos)
(eq system-type 'windows-nt)
(eq system-type 'cygwin))
(shell-command (format "tar -xf %s" (expand-file-name bundle-path)))
(shell-command (format "unzip -o %s -d %s"
(expand-file-name bundle-path)
(expand-file-name target-directory)))))
('error
(error "Unable to unzip automatically. Please go to [%s] and unzip the content of [%s] into [%s/]"
(expand-file-name version-directory)
(file-name-nondirectory bundle-path)
(file-name-sans-extension (file-name-nondirectory bundle-path)))))
(mapc (lambda (filename)
(set-file-modes (concat target-directory filename) (string-to-number "744" 8)))
(--remove (member it '("." "..")) (directory-files target-directory)))
(delete-file bundle-path)
(delete-file version-tempfile)
(message "TabNine installation complete.")))))
(defun tabnine--get-completions-cycling (callback)
"Get completion cycling options with CALLBACK."
(when tabnine--completion-cache
(funcall callback tabnine--completion-cache)))
(defun tabnine--cycle-completion (direction)
"Cycle completion with DIRECTION."
(lambda (result)
(unless tabnine--completion-cache
(setq tabnine--completion-cache result))
(let* ((cache tabnine--completion-cache)
(correlation_id (plist-get result :correlation_id))
(old_prefix (plist-get cache :old_prefix))
(completions (plist-get cache :results))
(completions (tabnine--filter-completions completions)))
(cond ((seq-empty-p completions)
(message "No completion is available."))
((= (length completions) 1)
(message "Only one completion is available."))
(t (let ((idx (mod (+ tabnine--completion-idx direction)
(length completions))))
(setq tabnine--completion-idx idx)
(let ((completion (elt completions idx)))
(tabnine--show-completion correlation_id old_prefix completion))))))))
(defsubst tabnine--overlay-visible-p ()
"Return whether the `tabnine--overlay' is avaiable."
(and (overlayp tabnine--overlay)
(overlay-buffer tabnine--overlay)))
(defun tabnine--overlay-displaying-result (result)
"Return t while `tabnine--overlay' is displaying the RESULT."
(let* ((ov (tabnine--get-overlay))
(ov-correlation-id (overlay-get ov 'correlation_id))
(ov-completion-index (overlay-get ov 'completion_index))
(correlation_id (plist-get result :correlation_id)))
(and (equal ov-correlation-id correlation_id)
(tabnine--overlay-visible-p))))
(defun tabnine-next-completion ()
"Cycle to next completion."
(interactive)
(when (tabnine--overlay-visible-p)
(tabnine--get-completions-cycling (tabnine--cycle-completion 1))))
(defun tabnine-previous-completion ()
"Cycle to previous completion."
(interactive)
(when (tabnine--overlay-visible-p)
(tabnine--get-completions-cycling (tabnine--cycle-completion -1))))
;;
;; UI
;;
(defun tabnine-current-completion ()
"Get current completion."
(and (tabnine--overlay-visible-p)
(overlay-get tabnine--overlay 'completion)))
(defface tabnine-overlay-face
'((t :inherit shadow))
"Face for TabNine overlay.")
(defvar-local tabnine--real-posn nil
"Posn information without overlay.
To work around posn problems with after-string property.")
(defvar tabnine-completion-map
(let ((keymap (make-sparse-keymap)))
(define-key keymap (kbd "C-g") #'tabnine-clear-overlay)
(define-key keymap (kbd "M-f") #'tabnine-accept-completion-by-word)
(define-key keymap (kbd "M-<return>") #'tabnine-accept-completion-by-line)
(define-key keymap (kbd "M-[") #'tabnine-previous-completion)
(define-key keymap (kbd "M-]") #'tabnine-next-completion)
keymap)
"Keymap for TabNine completion overlay.")
(defun tabnine--get-overlay ()
"Create or get overlay for TabNine."
(unless (overlayp tabnine--overlay)
(setq tabnine--overlay (make-overlay 1 1 nil nil t))
(overlay-put tabnine--overlay 'keymap tabnine-completion-map)
(overlay-put tabnine--overlay 'priority 100))
tabnine--overlay)
(defun tabnine--overlay-end (ov)
"Return the end position of overlay OV."
(- (line-end-position) (overlay-get ov 'tail-length)))
(defun tabnine--set-overlay-text (ov completion)
"Set overlay OV with COMPLETION."
(move-overlay ov (point) (line-end-position))
(let* ((tail (buffer-substring (tabnine--overlay-end ov) (line-end-position)))
(p-completion (propertize completion 'face 'tabnine-overlay-face)))
(if (eolp)
(progn
(overlay-put ov 'after-string "") ; make sure posn is correct
(setq tabnine--real-posn (cons (point) (posn-at-point)))
(put-text-property 0 1 'cursor t p-completion)
(overlay-put ov 'display "")
(overlay-put ov 'after-string p-completion))
(overlay-put ov 'display (substring p-completion 0 1))
(overlay-put ov 'after-string (substring p-completion 1)))
(overlay-put ov 'completion completion)
(overlay-put ov 'start (point))))
(defun tabnine-clear-overlay ()
"Clear TabNine overlay."
(interactive)
(when (tabnine--overlay-visible-p)
(delete-overlay tabnine--overlay)
(setq tabnine--real-posn nil)))
(defun tabnine-accept-completion (&optional transform-fn)
"Accept completion. Return t if there is a completion.
Use TRANSFORM-FN to transform completion if provided."
(interactive)
(when (tabnine--overlay-visible-p)
(let* ((ov tabnine--overlay)
(completion (overlay-get ov 'completion))
(start (overlay-get ov 'start))
(end (tabnine--overlay-end ov))
(new_prefix (overlay-get ov 'new_prefix))
(new_suffix (overlay-get ov 'new_suffix))
(old_suffix (overlay-get ov 'old_suffix))
(t-completion (funcall (or transform-fn #'identity) completion))
(full-completion (s-equals-p t-completion completion))
(partial-completion (and (s-prefix-p t-completion completion)
(not full-completion))))
(tabnine-clear-overlay)
(when (and tabnine-auto-balance full-completion
(s-present? old_suffix) (s-present? (s-trim old_suffix)))
(delete-region (point)
(min (+ (point) (length old_suffix))
(point-max))))
(if (eq major-mode 'vterm-mode)
(progn
(vterm-delete-region start end)
(vterm-insert t-completion)))
;; maybe should not delete this line
;; (delete-region start (line-end-position))
(insert t-completion)
;; if it is a partial completion
(if partial-completion
(tabnine--set-overlay-text (tabnine--get-overlay) (s-chop-prefix t-completion completion))
(when (and (s-present? new_suffix) (s-present? new_prefix))
(when-let* ((left (s-chop-prefix new_prefix completion))
(len (length left)))
(backward-char len))))
t)))
(defmacro tabnine--define-accept-completion-by-action (func-name action)
"Define function FUNC-NAME to accept completion by ACTION."
`(defun ,func-name (&optional n)
(interactive "p")
(setq n (or n 1))
(tabnine-accept-completion (lambda (completion)
(with-temp-buffer
(insert completion)
(goto-char (point-min))
(funcall ,action n)
(buffer-substring-no-properties (point-min) (point)))))))
(tabnine--define-accept-completion-by-action tabnine-accept-completion-by-word #'forward-word)
(tabnine--define-accept-completion-by-action tabnine-accept-completion-by-line #'forward-line)
(tabnine--define-accept-completion-by-action tabnine-accept-completion-by-paragraph #'forward-paragraph)
(defun tabnine--show-completion-1 (response)
"Show completion result after first get RESPONSE."
(when-let* ((result response)
(completions (plist-get result :results))
(completions (tabnine--filter-completions completions))
(completion (if (seq-empty-p completions) nil (seq-elt completions 0)))
(old_prefix (plist-get result :old_prefix))
(new_prefix (plist-get completion :new_prefix))
(correlation_id (plist-get result :correlation_id)))
(unless (tabnine--overlay-displaying-result result)
(when (s-present? new_prefix)
(setq tabnine--completion-cache result)
(setq tabnine--completion-idx 0)
(when (s-starts-with? old_prefix new_prefix)
(setq new_prefix (s-chop-prefix old_prefix new_prefix)))
(tabnine--show-completion correlation_id old_prefix completion) ;; alway show completion result, while display with capf, then clear the overlay
;; (when (not (tabnine--response-display-with-capf-p completion))
;; (tabnine--show-completion correlation_id old_prefix completion))
))))
(defun tabnine--show-completion (correlation_id old_prefix completion)
"Show OLD_PREFIX's COMPLETION with validate completion's CORRELATION_ID."
(when (and (= correlation_id tabnine--correlation-id)
(tabnine--satisfy-display-predicates))
(tabnine--dbind (:new_prefix
:old_suffix :new_suffix :completion_metadata
(:kind :detail :snippet_context (:completion_index))) completion
(when (s-starts-with? old_prefix new_prefix)
(setq new_prefix (s-chop-prefix old_prefix new_prefix)))
(save-restriction
(widen)
(let* ((ov (tabnine--get-overlay))
(completion-str (if (s-present? new_suffix)
(concat new_prefix new_suffix)
new_prefix))
(completion-data
(list :completion completion-str
:new_prefix new_prefix
:new_suffix new_suffix
:old_suffix old_suffix
:correlation_id correlation_id
:completion_index completion_index
:pos (point))))
(tabnine--display-overlay-completion completion-data))))))
(defun tabnine--display-overlay-completion (completion)
"Show COMPLETION with overlay ."
(tabnine-clear-overlay)
(let ((completion-str (plist-get completion :completion))
(old_suffix (plist-get completion :old_suffix))
(new_suffix (plist-get completion :new_suffix))
(new_prefix (plist-get completion :new_prefix))
(correlation_id (plist-get completion :correlation_id))
(completion_index (plist-get completion :completion_index))
(pos (plist-get completion :pos)))
(when (s-present-p completion-str)
(save-excursion
(goto-char pos) ; removing indentation
(let* ((ov (tabnine--get-overlay)))
(overlay-put ov 'tail-length (- (line-end-position) pos))
(overlay-put ov 'correlation_id correlation_id)
(overlay-put ov 'completion_index completion_index)
(overlay-put ov 'old_suffix old_suffix)
(overlay-put ov 'new_suffix new_suffix)
(overlay-put ov 'new_prefix new_prefix)
(tabnine--set-overlay-text ov completion-str))))))
;;;###autoload
(defun tabnine-complete (arg)
"Complete at the current point with ARG, if arg is set, call from capf."
(interactive "P")
(setq tabnine--last-correlation-id tabnine--correlation-id)
(setq tabnine--completion-cache nil)
(setq tabnine--completion-idx 0)
(setq tabnine--trigger-with-capf (if arg t))
(let ((called-interactively (called-interactively-p 'interactive)))
(let* ((cached-result tabnine--completion-cache-result)
(result (if tabnine--trigger-with-capf
(tabnine-autocomplete)