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| | ;;; my-async-tests.el --- Scratch/temporary file: some tests about async -*- lexical-binding: t -*-
;; Copyright (C) 2024 Bruno BARBIER
;; Author: Bruno BARBIER
;; Status: Temporary tests.
;; Compatibility: GNU Emacs 30.0.50
;;
;; This file is NOT part of GNU Emacs.
;; 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 2 of
;; the License, or (at your option) any later version.
;; This program 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 this program; if not, write to the Free
;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
;; MA 02111-1307 USA
(require 'org)
(require 'org-elib-async)
(defun my-shell-babel-schedule (lang body params handle-feedback)
"Execute the bash script BODY.
Execute the shell script BODY using bash. Use HANDLE-FEEDBACK to report
the outcome (success or failure)."
(unless (equal "bash" lang)
(error "Only for bash"))
(funcall handle-feedback (list :pending "started"))
(org-elib-async-process (list "bash") :input body :callback handle-feedback))
(defun my-org-babel-python-how-to-execute (body params)
"Return how to execute BODY using python.
Return how to execute, as expected by
`org-elib-async-comint-queue--execution'."
;; Code mostly extracted from ob-python, following
;; `org-babel-python-evaluate-session'.
;; Results are expected to differ from ob-python as we follow the
;; same process for all execution paths: asynchronous or not, with
;; session or without.
(let* ((org-babel-python-command
(or (cdr (assq :python params))
org-babel-python-command))
(session-key (org-babel-python-initiate-session
(cdr (assq :session params))))
(graphics-file (and (member "graphics" (assq :result-params params))
(org-babel-graphical-output-file params)))
(result-params (cdr (assq :result-params params)))
(result-type (cdr (assq :result-type params)))
(results-file (when (eq 'value result-type)
(or graphics-file
(org-babel-temp-file "python-"))))
(return-val (when (eq result-type 'value)
(cdr (assq :return params))))
(preamble (cdr (assq :preamble params)))
(full-body
(concat
(org-babel-expand-body:generic
body params
(org-babel-variable-assignments:python params))
(when return-val
(format "\n%s" return-val))))
(post-process
(lambda (r)
(setq r (string-trim r))
(when (string-prefix-p "Traceback (most recent call last):" r)
(signal 'user-error (list r)))
(when (eq 'value result-type)
(setq r (org-babel-eval-read-file results-file)))
(org-babel-reassemble-table
(org-babel-result-cond result-params
r
(org-babel-python-table-or-string r))
(org-babel-pick-name (cdr (assq :colname-names params))
(cdr (assq :colnames params)))
(org-babel-pick-name (cdr (assq :rowname-names params))
(cdr (assq :rownames params))))))
(tmp-src-file (org-babel-temp-file "python-"))
(session-body
;; The real code we evaluate in the session.
(pcase result-type
(`output
(format (string-join
(list "with open('%s') as f:\n"
" exec(compile(f.read(), f.name, 'exec'))\n"))
(org-babel-process-file-name
tmp-src-file 'noquote)))
(`value
;; FIXME: In this case, any output is an error.
(org-babel-python-format-session-value
tmp-src-file results-file result-params))))
comint-buffer
finally)
(unless session-key
;; No session. We create a temporary one and use 'finally' to
;; destroy it once we are done.
;;
;; FIXME: This session code should be refactored and moved into
;; ob-core.
(setq session-key (org-babel-python-initiate-session
;; We can't use a simple `generate-new-buffer'
;; due to the earmuffs game.
(org-babel-python-without-earmuffs
(format "*ob-python-no-session-%s*" (org-id-uuid)))))
(setq finally (lambda ()
(when-let ((s-buf
(get-buffer (org-babel-python-with-earmuffs session-key))))
;; We cannot delete it immediately as we are called from it.
(run-with-idle-timer
0.1 nil
(lambda ()
(when (buffer-live-p s-buf)
(let ((kill-buffer-query-functions nil)
(kill-buffer-hook nil))
(kill-buffer s-buf)))))))))
(org-elib-async-comint-queue-init-if-needed session-key)
(setq comint-buffer
(get-buffer (org-babel-python-with-earmuffs session-key)))
(with-temp-file tmp-src-file
(insert (if (and graphics-file (eq result-type 'output))
(format org-babel-python--output-graphics-wrapper
full-body graphics-file)
full-body)))
(lambda (&rest q)
(pcase q
(`(:instrs-to-enter)
;; FIXME: This is wrong.
"import sys; sys.ps1=''; sys.ps2=''")
(`(:instrs-to-exit))
(`(:finally) (when finally (funcall finally)))
(`(:instr-to-emit-tag ,tag) (format "print ('%s')" tag))
(`(:post-process ,r) (when post-process (funcall post-process r)))
(`(:send-instrs-to-session ,code)
;; See org-babel-python-send-string
(with-current-buffer comint-buffer
(let ((python-shell-buffer-name
(org-babel-python-without-earmuffs session-key)))
(python-shell-send-string (concat code "\n")))))
(`(:get-code) session-body)
(`(:get-comint-buffer) comint-buffer)
(_ (error "Unknown query"))))))
(defun my-org-babel-schedule (lang body params handle-feedback)
"Schedule the execution of BODY according to PARAMS.
This function is called by `org-babel-execute-src-block'. Return a
function that waits and returns the result on success, raise on failure."
(cl-assert (equal "python" lang))
(let ((exec (my-org-babel-python-how-to-execute body params)))
(org-elib-async-comint-queue--push exec :handle-feedback handle-feedback)))
(defun my-org-babel-execute (lang body params)
"Execute Python BODY according to PARAMS.
This function is called by `org-babel-execute-src-block'."
;; We just start the asynchronous execution, wait for it, and return
;; the result (or raise the exception). No custom code, and,
;; synchronous and asynchronous should just mix nicely together.
(cl-assert (equal "python" lang))
(funcall (my-org-babel-schedule lang body params nil)))
|