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;; ess-julia.el --- ESS julia mode and inferior interaction -*- lexical-binding: t; -*-
;;
;; Copyright (C) 2012-2015 Vitalie Spinu and the ESS Core team.
;;
;; Author: Vitalie Spinu
;; Maintainer: Vitalie Spinu
;; Created: 02-04-2012 (ESS 12.03)
;; Keywords: ESS, julia
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; This file is *NOT* part of GNU Emacs.
;; This file is part of ESS
;;
;; This program 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, 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.
;;
;; A copy of the GNU General Public License is available at
;; https://www.r-project.org/Licenses/
;;
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;; Commentary:
;;
;; Customize inferior-julia-program to point to your julia binary
;; and start the inferior with M-x julia.
;;
;; As of Sept 2015, this file depends heavily on julia-mode.el from the Julia
;; sources. If you install ESS using `make', this will work fine, otherwise
;; ensure that julia-mode.el is on your path before loading this file.
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;; Code:
(require 'ess-help)
(require 'ess-inf)
(require 'ess-r-mode)
(require 'ess-utils)
(require 'julia-mode)
(defvar ac-prefix)
(declare-function company-in-string-or-comment "company")
(declare-function company-doc-buffer "company")
(defcustom inferior-julia-args ""
"String of arguments (see `julia --help') used when starting julia."
:group 'ess-julia
:type 'string)
(eval-when-compile
(require 'cl-lib))
(defun ess-julia-send-string-function (process string _visibly)
"Send the Julia STRING to the PROCESS.
VISIBLY is not currently used."
(let ((file (concat temporary-file-directory "julia_eval_region.jl")))
(with-temp-file file
(insert string))
(process-send-string process (format ess-load-command file))))
;;; HELP
(cl-defmethod ess-help-get-topics (proc &context (ess-dialect "julia"))
(append (with-current-buffer (ess-command "ESS.all_help_topics()\n")
(split-string (buffer-string) "\n"))
(ess-julia--get-objects proc)))
(defun ess-julia--retrive-topics (url)
(with-current-buffer (url-retrieve-synchronously url)
(require 'url)
(goto-char (point-min))
(let (out)
(while (re-search-forward
"toctext[ \"]+href=\"\\([^>]+\\)\">\\([^<]+\\)</a" nil t)
(push (propertize (match-string 2)
:manual (concat url (match-string 1)))
out))
(kill-buffer)
(nreverse out))))
(defvar ess-julia--manual-topics nil)
(cl-defmethod ess--manual-lookup-override (&context (ess-dialect "julia"))
"Look up topics at https://docs.julialang.org/en/latest/manual/."
(let* ((pages (or ess-julia--manual-topics
(setq ess-julia--manual-topics
(ess-julia--retrive-topics
"https://docs.julialang.org/en/latest/"))))
(page (ess-completing-read "Lookup:" pages nil t)))
(browse-url (get-text-property 1 :manual page))))
(defun ess-julia-input-sender (proc string)
"Function to send PROC STRING submitted by user.
See `comint-input-sender'."
(save-current-buffer
(let* ((help-?-regexp "^ *\\(?:\\(?1: *?\\? *\\)\\(?2:.+\\)\\)")
(help-?-match (string-match help-?-regexp string)))
(cond (help-?-match
(ess-display-help-on-object (match-string 2 string))
(process-send-string proc "\n"))
(t ;; normal command
(inferior-ess-input-sender proc string))))))
(cl-defmethod ess-installed-packages (&context (ess-dialect "julia"))
"Return list of installed julia packages."
;; FIXME: This doesn't work if the user hasn't done "using Pkg" yet
(ess-get-words-from-vector "keys(Pkg.installed())\n"))
(cl-defmethod ess-load-library--override (pack &context (ess-dialect "julia"))
(ess-eval-linewise (format "using %s\n" pack)))
;;; COMPLETION
(defun ess-julia-latexsub-completion ()
"Complete latex input, and return format required by `completion-at-point-functions'."
(if (julia-latexsub) ; julia-latexsub returns nil if it performed a completion, the point otherwise
nil
(lambda () t) ;; bypass other completion methods
))
(defun ess-julia-object-completion ()
"Return completions at point in a format required by `completion-at-point-functions'."
(let ((proc (ess-get-next-available-process ess-dialect t))
(beg (ess-symbol-start)))
(if proc
(when beg
(let* ((prefix (buffer-substring-no-properties beg (point)))
(obj (and (string-match "\\(.*\\)\\..*$" prefix)
(match-string 1 prefix)))
(beg (if obj
(+ beg 1 (length obj))
beg)))
(list beg (point)
(nreverse (mapcar 'car (ess-julia--get-objects proc obj)))
:exclusive 'no)))
(when (string-match "complet" (symbol-name last-command))
(message "No ESS process of dialect %s started" ess-dialect)
nil))))
(defun ess-julia-objects (prefix &optional proc)
"Given PREFIX get all cached objects from PROC."
(when prefix
(let ((proc (or proc (ess-get-next-available-process nil t))))
(if (string-match "\\(.*\\)\\..*$" prefix)
(let ((module (match-string 1 prefix)))
(mapcar (lambda (el) (concat module "." (car el)))
(ess-julia--get-objects proc module)))
(ess-julia--get-objects proc)))))
(defun ess-julia--get-objects (&optional proc obj)
"Return all available objects.
Local caching might be used. If MODULE is givven, return only
objects from that MODULE."
(setq proc (or proc (ess-get-process)))
(when (stringp proc)
(setq proc (get-process proc)))
(when (process-live-p proc)
(let ((objects (process-get proc 'objects)))
(if (process-get proc 'busy)
(if obj
(assoc obj objects)
(process-get proc 'objects))
(if obj
(or (cdr (assoc obj objects))
;; don't cache composite objects and datatypes
(ess-julia--get-components proc obj))
;; this segment is entered when user completon at top level is
;; requested, either Tab or AC. Hence Main is always updated.
(let ((modules (ess-get-words-from-vector
"ESS.main_modules()\n" nil nil proc))
(loc (process-get proc 'last-objects-cache))
(lev (process-get proc 'last-eval)))
(prog1
(apply #'nconc
(mapcar
(lambda (mod)
;; we are caching all modules, and reinit Main every
;; time user enters commands
(copy-sequence
(or (and (or (not (equal mod "Main"))
(ignore-errors (time-less-p lev loc)))
(cdr (assoc mod objects)))
(ess-julia--get-components proc mod t))))
modules))
(process-put proc 'last-objects-cache (current-time)))))))))
(defun ess-julia--get-components (proc obj &optional cache?)
(with-current-buffer (ess-command (format "ESS.components(%s)\n" obj)
nil nil nil nil proc)
(goto-char (point-min))
(let (list)
(while (re-search-forward
"^\\([^ \t\n]+\\) +\\([^ \t\n]+\\)$" nil t)
(push (cons (match-string 1) (match-string 2)) list))
(when cache?
(let ((objects (process-get proc 'objects)))
(push (cons obj list) objects)
(process-put proc 'objects objects)))
list)))
(defun ess-julia-get-object-help-string (sym)
"Help string for ac."
(let ((proc (ess-get-next-available-process nil t)))
(if (null proc)
"No free ESS process found"
(let ((buf (get-buffer-create " *ess-command-output*")))
(with-current-buffer (process-buffer proc)
(ess-with-current-buffer buf
(ess--flush-help-into-current-buffer sym nil)))
(with-current-buffer buf
(ess-help-underline)
(goto-char (point-min))
(buffer-string))))))
(defvar ac-source-ess-julia-objects
'((prefix . ess-symbol-start)
(requires . 2)
(candidates . ess-ac-julia-objects)
(document . ess-julia-get-object-help-string))
"Auto-completion source for julia objects.")
(defun ess-ac-julia-objects ()
(require 'auto-complete)
(ess-julia-objects ac-prefix))
(declare-function company-begin-backend "company.el")
(defun company-ess-julia-objects (command &optional arg &rest ignored)
(interactive (list 'interactive))
(cl-case command
(interactive (company-begin-backend 'company-ess-julia-objects))
(prefix (unless (company-in-string-or-comment)
(let ((start (ess-symbol-start)))
(when start (buffer-substring-no-properties start (point))))))
(candidates (let ((proc (ess-get-next-available-process)))
(when proc
(all-completions arg (mapcar (lambda (x) (or (car-safe x) x))
(ess-julia-objects arg proc))))))
(doc-buffer (company-doc-buffer (ess-julia-get-object-help-string arg)))))
;;; ERRORS
(defvar ess-julia-error-regexp-alist '(ess-julia-in ess-julia-at ess-julia-while-load)
"List of symbols which are looked up in `compilation-error-regexp-alist-alist'.")
(add-to-list 'compilation-error-regexp-alist-alist
'(ess-julia-in "^\\s-*in [^ \t\n]* \\(at \\(.*\\):\\([0-9]+\\)\\)" 2 3 nil 2 1))
(add-to-list 'compilation-error-regexp-alist-alist
'(ess-julia-at "^\\S-+\\s-+\\(at \\(.*\\):\\([0-9]+\\)\\)" 2 3 nil 2 1))
(add-to-list 'compilation-error-regexp-alist-alist
'(ess-julia-while-load "^\\s-*\\(while loading\\s-\\(.*\\), in .* on line +\\([0-9]+\\)\\)" 2 3 nil 2 1))
;;; ELDOC
(defun ess-julia-eldoc-function ()
"Return the doc string, or nil.
If an ESS process is not associated with the buffer, do not try
to look up any doc strings."
(when (and ess-can-eval-in-background
(ess-process-live-p)
(not (ess-process-get 'busy)))
(let ((funname (or (and ess-eldoc-show-on-symbol ;; aggressive completion
(symbol-name (ess-symbol-at-point)))
(car (ess--fn-name-start)))))
(when funname
(let* ((args (copy-sequence (nth 2 (ess-function-arguments funname))))
(W (- (window-width (minibuffer-window)) (+ 4 (length funname))))
(doc (concat (propertize funname 'face font-lock-function-name-face) ": ")))
(when args
(setq args (sort args (lambda (s1 s2)
(< (length s1) (length s2)))))
(setq doc (concat doc (pop args)))
(while (and args (< (+ (length doc) (length (car args))) W))
(setq doc (concat doc " "
(pop args))))
(when (and args (< (length doc) W))
(setq doc (concat doc " {--}")))
doc))))))
;;; CORE
(defvar ess-julia-customize-alist
'((inferior-ess-primary-prompt . "\\w*> ")
(inferior-ess-secondary-prompt . nil)
(inferior-ess-prompt . "\\w*> ")
(ess-local-customize-alist . 'ess-julia-customize-alist)
(inferior-ess-program . inferior-julia-program)
(ess-load-command . "include(expanduser(\"%s\"))\n")
(ess-funargs-command . "ESS.fun_args(\"%s\")\n")
(ess-dump-error-re . "in \\w* at \\(.*\\):[0-9]+")
(ess-error-regexp . "\\(^\\s-*at\\s-*\\(?3:.*\\):\\(?2:[0-9]+\\)\\)")
(ess-error-regexp-alist . ess-julia-error-regexp-alist)
(ess-mode-completion-syntax-table . ess-julia-completion-syntax-table)
;; (inferior-ess-objects-command . inferior-ess-r-objects-command)
;; (inferior-ess-search-list-command . "search()\n")
(inferior-ess-help-command . "ESS.help(\"%s\")\n")
;; (inferior-ess-help-command . "help(\"%s\")\n")
(ess-language . "julia")
(ess-dialect . "julia")
(ess-suffix . "jl")
(ess-dump-filename-template . (replace-regexp-in-string
"S$" ess-suffix ; in the one from custom:
ess-dump-filename-template-proto))
(ess-mode-editing-alist . nil)
(ess-change-sp-regexp . nil );ess-r-change-sp-regexp)
(ess-help-sec-regex . ess-help-r-sec-regex)
(ess-help-sec-keys-alist . ess-help-r-sec-keys-alist)
(ess-function-pattern . ess-r-function-pattern)
(ess-object-name-db-file . "ess-jl-namedb.el" )
(ess-smart-operators . ess-r-smart-operators)
(inferior-ess-exit-command . "exit()\n")
;;harmful for shell-mode's C-a: -- but "necessary" for ESS-help?
(inferior-ess-language-start . nil)
(ess-STERM . "iESS")
(ess-editor . ess-r-editor)
(ess-pager . ess-r-pager)
(ess-getwd-command . "pwd()\n")
(ess-setwd-command . "cd(expanduser(\"%s\"))\n"))
"Variables to customize for Julia.")
(cl-defmethod ess--help-web-search-override (cmd &context (ess-dialect "julia"))
"Offer to search the web for a Julia command."
(browse-url (format "https://docs.julialang.org/en/latest/search/?q=%s" cmd)))
(defvar ess-julia-completion-syntax-table
(let ((table (copy-syntax-table ess-r-mode-syntax-table)))
(modify-syntax-entry ?. "_" table)
;; (modify-syntax-entry ?: "_" table)
;; (modify-syntax-entry ?$ "_" table)
(modify-syntax-entry ?@ "_" table)
table)
"Syntax table used for completion and help symbol lookup.
It makes underscores and dots word constituent chars.")
(cl-defmethod ess-help-commands (&context (ess-dialect "julia"))
'((packages . "_ess_list_categories()\n")
(package-index . "_ess_print_index(\"%s\")\n")
(index-keyword-reg . "^\\(.*+\\):$*")
(index-start-reg . ":")))
(defvar ess-julia-mode-syntax-table (copy-syntax-table julia-mode-syntax-table))
(defvar ess-julia-mode-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map ess-mode-map)
map)
"Keymap for `ess-julia-mode'.")
;;;###autoload
(define-derived-mode ess-julia-mode julia-mode "ESS[julia]"
"Major mode for julia files."
:group 'ess-Julia
(setq-local ess-local-customize-alist ess-julia-customize-alist)
(setq ess-dialect "julia")
(ess-setq-vars-local ess-julia-customize-alist)
;; eldoc
(add-function :before-until (local 'eldoc-documentation-function)
#'ess-julia-eldoc-function)
(when ess-use-eldoc (eldoc-mode))
;; auto-complete
(ess--setup-auto-complete '(ac-source-ess-julia-objects))
;; company
(ess--setup-company '(company-ess-julia-objects))
;; for emacs >= 24
(remove-hook 'completion-at-point-functions 'ess-filename-completion 'local) ;; should be first
(add-hook 'completion-at-point-functions 'ess-julia-object-completion nil 'local)
(add-hook 'completion-at-point-functions 'ess-filename-completion nil 'local)
(add-hook 'completion-at-point-functions 'ess-julia-latexsub-completion nil 'local)
(if (fboundp 'ess-add-toolbar) (ess-add-toolbar)))
;; Inferior mode
(defvar inferior-ess-julia-mode-syntax-table
(copy-syntax-table ess-julia-mode-syntax-table)
"Syntax table for `inferior-ess-julia-mode'.")
(define-derived-mode inferior-ess-julia-mode inferior-ess-mode "iESS[julia]"
"Major mode for inferior julia processes."
:group 'ess-Julia
(ess-setq-vars-local ess-julia-customize-alist)
(setq-local comint-use-prompt-regexp t)
(setq comint-prompt-regexp (concat "^" inferior-ess-prompt))
(setq ess-dialect "julia")
;; eldoc
(add-function :before-until (local 'eldoc-documentation-function)
#'ess-julia-eldoc-function)
(when ess-use-eldoc (eldoc-mode))
;; auto-complete
(ess--setup-auto-complete '(ac-source-ess-julia-objects) t)
;; company
(ess--setup-company '(company-ess-julia-objects) t)
(remove-hook 'completion-at-point-functions 'ess-filename-completion 'local) ;; should be first
(add-hook 'completion-at-point-functions 'ess-julia-object-completion nil 'local)
(add-hook 'completion-at-point-functions 'ess-filename-completion nil 'local)
(add-hook 'completion-at-point-functions 'ess-julia-latexsub-completion nil 'local)
(setq comint-input-sender #'ess-julia-input-sender))
(defvar ess-julia-mode-hook nil)
(defvar ess-julia-post-run-hook nil
"Functions run in process buffer after starting julia process.")
;;;###autoload
(defun run-ess-julia (&optional start-args)
"Start an inferior julia process.
Optional prefix START-ARGS (\\[universal-argument]) allows to set
command line arguments, such as --load=<file>. This should be OS
agnostic. If you have certain command line arguments that should
always be passed to julia, put them in the variable
`inferior-julia-args'."
(interactive "P")
;; get settings, notably inferior-julia-program :
(if (null inferior-julia-program)
(error "'inferior-julia-program' does not point to 'julia' or 'julia-basic' executable")
(ess-write-to-dribble-buffer ;; for debugging only
(format
"\n(julia): ess-dialect=%s, buf=%s, start-arg=%s\n current-prefix-arg=%s\n"
ess-dialect (current-buffer) start-args current-prefix-arg))
(let* ((jl-start-args
(concat inferior-julia-args " " ; add space just in case
(if start-args
(read-string
(concat "Starting Args"
(if inferior-julia-args
(concat " [other than '" inferior-julia-args "']"))
" ? "))
nil))))
(let ((inf-buf (inferior-ess jl-start-args ess-julia-customize-alist)))
(with-current-buffer inf-buf
(ess--tb-start)
;; Remove ` from julia's logo
(goto-char (point-min))
(while (re-search-forward "`" nil t)
(replace-match "'"))
;; Remove an offending unmatched parenthesis
(goto-char (point-min))
(forward-line 4)
(when (re-search-forward "(" nil t)
(replace-match "|"))
(goto-char (point-max))
;; --> julia helpers from ../etc/ess-julia.jl :
(ess--inject-code-from-file (format "%sess-julia.jl" ess-etc-directory))
(run-mode-hooks 'ess-julia-post-run-hook))
inf-buf))))
;;;###autoload
(defalias 'julia #'run-ess-julia)
(cl-defmethod ess--help-major-mode (&context (ess-dialect "julia"))
(ess-julia-help-mode))
(define-derived-mode ess-julia-help-mode ess-help-mode "ESS[Julia] Help"
"Major mode for Julia documentation."
:group 'ess-help
(let ((inhibit-read-only t))
;; Julia help buffers can contain color if julia starts with
;; --color=yes
(ansi-color-apply-on-region (point-min) (point-max))))
(add-to-list 'auto-mode-alist '("\\.jl\\'" . ess-julia-mode))
(provide 'ess-julia)
;;; ess-julia.el ends here