org-mode/lisp/ob-julia.el

344 lines
12 KiB
EmacsLisp

;;; ob-julia.el --- org-babel functions for julia code evaluation -*- lexical-binding: t; -*-
;; Copyright (C) 2013-2024 Free Software Foundation, Inc.
;; Authors: G. Jay Kerns
;; Maintainer: Pedro Bruel <pedro.bruel@gmail.com>
;; Keywords: literate programming, reproducible research, scientific computing
;; URL: https://github.com/phrb/ob-julia
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Org-Babel support for evaluating julia code
;;
;; Based on ob-R.el by Eric Schulte and Dan Davison.
;;
;; Session support requires the installation of the DataFrames and CSV
;; Julia packages.
;;; Code:
(require 'org-macs)
(org-assert-version)
(require 'cl-lib)
(require 'ob)
(declare-function orgtbl-to-csv "org-table" (table params))
(declare-function julia "ext:ess-julia" (&optional start-args))
(declare-function inferior-ess-send-input "ext:ess-inf" ())
(declare-function ess-make-buffer-current "ext:ess-inf" ())
(declare-function ess-eval-buffer "ext:ess-inf" (vis))
(declare-function ess-wait-for-process "ext:ess-inf"
(&optional proc sec-prompt wait force-redisplay))
(defvar org-babel-header-args:julia
'((width . :any)
(horizontal . :any)
(results . ((file list vector table scalar verbatim)
(raw org html latex code pp wrap)
(replace silent append prepend)
(output value graphics))))
"Julia-specific header arguments.")
(add-to-list 'org-babel-tangle-lang-exts '("julia" . "jl"))
(defvar org-babel-default-header-args:julia '())
(defcustom org-babel-julia-command "julia"
"Name of command to use for executing julia code."
:version "24.3"
:package-version '(Org . "8.0")
:group 'org-babel
:type 'string)
(defvar ess-current-process-name) ; dynamically scoped
(defvar ess-local-process-name) ; dynamically scoped
(defvar ess-eval-visibly-p) ; dynamically scoped
(defvar ess-local-customize-alist); dynamically scoped
(defvar ess-gen-proc-buffer-name-function) ; defined in ess-inf.el
(defun org-babel-julia-associate-session (session)
"Associate R code buffer with an R session.
Make SESSION be the inferior ESS process associated with the
current code buffer."
(when-let ((process (get-buffer-process session)))
(setq ess-local-process-name (process-name process))
(ess-make-buffer-current))
(setq-local ess-gen-proc-buffer-name-function (lambda (_) session)))
(defun org-babel-expand-body:julia (body params &optional _graphics-file)
"Expand BODY according to PARAMS, return the expanded body."
(mapconcat #'identity
(append
(when (cdr (assq :prologue params))
(list (cdr (assq :prologue params))))
(org-babel-variable-assignments:julia params)
(list body)
(when (cdr (assq :epilogue params))
(list (cdr (assq :epilogue params)))))
"\n"))
(defun org-babel-execute:julia (body params)
"Execute a block of julia code.
This function is called by `org-babel-execute-src-block'."
(save-excursion
(let* ((result-params (cdr (assq :result-params params)))
(result-type (cdr (assq :result-type params)))
(session (org-babel-julia-initiate-session
(cdr (assq :session params)) params))
(graphics-file (and (member "graphics" (assq :result-params params))
(org-babel-graphical-output-file params)))
(colnames-p (unless graphics-file (cdr (assq :colnames params))))
(full-body (org-babel-expand-body:julia body params graphics-file))
(result
(org-babel-julia-evaluate
session full-body result-type result-params
(or (equal "yes" colnames-p)
(org-babel-pick-name
(cdr (assq :colname-names params)) colnames-p)))))
(if graphics-file nil result))))
(defun org-babel-normalize-newline (result)
(replace-regexp-in-string
"\\(\n\r?\\)\\{2,\\}"
"\n"
result))
(defun org-babel-prep-session:julia (session params)
"Prepare SESSION according to the header arguments specified in PARAMS."
(let* ((session (org-babel-julia-initiate-session session params))
(var-lines (org-babel-variable-assignments:julia params)))
(org-babel-comint-in-buffer session
(mapc (lambda (var)
(end-of-line 1) (insert var) (comint-send-input nil t)
(org-babel-comint-wait-for-output session)) var-lines))
session))
(defun org-babel-load-session:julia (session body params)
"Load BODY into SESSION."
(save-window-excursion
(let ((buffer (org-babel-prep-session:julia session params)))
(with-current-buffer buffer
(goto-char (process-mark (get-buffer-process (current-buffer))))
(insert (org-babel-chomp body)))
buffer)))
;; helper functions
(defun org-babel-variable-assignments:julia (params)
"Return list of julia statements assigning the block's variables."
(let ((vars (org-babel--get-vars params)))
(mapcar
(lambda (pair) (org-babel-julia-assign-elisp (car pair) (cdr pair)))
(mapcar
(lambda (i)
(cons (car (nth i vars))
(org-babel-reassemble-table
(cdr (nth i vars))
(cdr (nth i (cdr (assq :colname-names params))))
(cdr (nth i (cdr (assq :rowname-names params)))))))
(number-sequence 0 (1- (length vars)))))))
(defun org-babel-julia-quote-csv-field (s)
"Quote field S for export to julia."
(if (stringp s)
(concat "\"" (mapconcat #'identity (split-string s "\"") "\"\"") "\"")
(format "%S" s)))
(defun org-babel-julia-assign-elisp (name value)
"Construct julia code assigning the elisp VALUE to a variable named NAME."
(if (listp value)
(let* ((lengths (mapcar #'length (cl-remove-if-not #'sequencep value)))
(max (if lengths (apply #'max lengths) 0))
(min (if lengths (apply #'min lengths) 0)))
;; Ensure VALUE has an orgtbl structure (depth of at least 2).
(unless (listp (car value)) (setq value (list value)))
(let ((file (orgtbl-to-csv value '(:fmt org-babel-julia-quote-csv-field))))
(if (= max min)
(format "%s = begin
using CSV
CSV.read(\"%s\")
end" name file)
(format "%s = begin
using CSV
CSV.read(\"%s\")
end"
name file))))
(format "%s = %s" name (org-babel-julia-quote-csv-field value))))
(defvar ess-ask-for-ess-directory) ; dynamically scoped
(defun org-babel-julia-initiate-session (session params)
"If there is not a current julia process then create one."
(unless (string= session "none")
(let* ((session (or session "*Julia*"))
(ess-ask-for-ess-directory
(and (bound-and-true-p ess-ask-for-ess-directory)
(not (cdr (assq :dir params)))))
;; Make ESS name the process buffer as SESSION.
(ess-gen-proc-buffer-name-function
(lambda (_) session)))
(if (org-babel-comint-buffer-livep session)
session
;; FIXME: Depending on `display-buffer-alist', (julia) may end up
;; popping up a new frame which `save-window-excursion' won't be able
;; to "undo", so we really should call a kind of
;; `julia-no-select' instead so we don't need to undo any
;; window-changes afterwards.
(save-window-excursion
(when (get-buffer session)
;; Session buffer exists, but with dead process
(set-buffer session))
(org-require-package 'ess "ESS")
(set-buffer (julia))
(current-buffer))))))
(defun org-babel-julia-graphical-output-file (params)
"Name of file to which julia should send graphical output."
(and (member "graphics" (cdr (assq :result-params params)))
(cdr (assq :file params))))
(defconst org-babel-julia-eoe-indicator "print(\"org_babel_julia_eoe\")")
(defconst org-babel-julia-eoe-output "org_babel_julia_eoe")
(defconst org-babel-julia-write-object-command "begin
local p_ans = %s
local p_tmp_file = \"%s\"
try
using CSV, DataFrames
if typeof(p_ans) <: DataFrame
p_ans_df = p_ans
else
p_ans_df = DataFrame(:ans => p_ans)
end
CSV.write(p_tmp_file,
p_ans_df,
writeheader = %s,
transform = (col, val) -> something(val, missing),
missingstring = \"nil\",
quotestrings = false)
p_ans
catch e
err_msg = \"Source block evaluation failed. $e\"
CSV.write(p_tmp_file,
DataFrame(:ans => err_msg),
writeheader = false,
transform = (col, val) -> something(val, missing),
missingstring = \"nil\",
quotestrings = false)
err_msg
end
end")
(defun org-babel-julia-evaluate
(session body result-type result-params column-names-p)
"Evaluate julia code in BODY."
(if session
(org-babel-julia-evaluate-session
session body result-type result-params column-names-p)
(org-babel-julia-evaluate-external-process
body result-type result-params column-names-p)))
(defun org-babel-julia-evaluate-external-process
(body result-type result-params column-names-p)
"Evaluate BODY in external julia process.
If RESULT-TYPE equals `output' then return standard output as a
string. If RESULT-TYPE equals `value' then return the value of the
last statement in BODY, as elisp."
(cl-case result-type
(value
(let ((tmp-file (org-babel-temp-file "julia-")))
(org-babel-eval org-babel-julia-command
(format org-babel-julia-write-object-command
(format "begin %s end" body)
(org-babel-process-file-name tmp-file 'noquote)
(if column-names-p "true" "false")
))
(org-babel-julia-process-value-result
(org-babel-result-cond result-params
(with-temp-buffer
(insert-file-contents tmp-file)
(buffer-string))
(org-babel-import-elisp-from-file tmp-file '(4)))
column-names-p)))
(output (org-babel-eval org-babel-julia-command body))))
(defun org-babel-julia-evaluate-session
(session body result-type result-params column-names-p)
"Evaluate BODY in SESSION.
If RESULT-TYPE equals `output' then return standard output as a
string. If RESULT-TYPE equals `value' then return the value of the
last statement in BODY, as elisp."
(cl-case result-type
(value
(with-temp-buffer
(insert (org-babel-chomp body))
(let ((ess-local-customize-alist t)
(ess-local-process-name
(process-name (get-buffer-process session)))
(ess-eval-visibly-p nil))
(ess-eval-buffer nil)))
(let ((tmp-file (org-babel-temp-file "julia-")))
(org-babel-comint-eval-invisibly-and-wait-for-file
session tmp-file
(format org-babel-julia-write-object-command
"ans"
(org-babel-process-file-name tmp-file 'noquote)
(if column-names-p "true" "false")
))
(org-babel-julia-process-value-result
(org-babel-result-cond result-params
(with-temp-buffer
(insert-file-contents tmp-file)
(buffer-string))
(org-babel-import-elisp-from-file tmp-file '(4)))
column-names-p)))
(output
(mapconcat
#'org-babel-chomp
(butlast
(delq nil
(mapcar
(lambda (line) (when (> (length line) 0) line))
(mapcar
(lambda (line) ;; cleanup extra prompts left in output
(if (string-match
"^\\([>+.]\\([ ][>.+]\\)*[ ]\\)"
(car (split-string line "\n")))
(substring line (match-end 1))
line))
(org-babel-comint-with-output (session org-babel-julia-eoe-output)
(insert (mapconcat #'org-babel-chomp
(list body org-babel-julia-eoe-indicator)
"\n"))
(inferior-ess-send-input))))))
"\n"))))
(defun org-babel-julia-process-value-result (result column-names-p)
"Julia-specific processing of return value.
Insert hline if column names in output have been requested."
(if column-names-p
(cons (car result) (cons 'hline (cdr result)))
result))
(provide 'ob-julia)
;;; ob-julia.el ends here