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|
;;; ob-clojure.el --- Babel Functions for Clojure -*- lexical-binding: t; -*-
;; Copyright (C) 2009-2020 Free Software Foundation, Inc.
;; Author: Joel Boehland, Eric Schulte, Oleh Krehel, Frederick Giasson
;;
;; Keywords: literate programming, reproducible research
;; Homepage: https://orgmode.org
;; 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:
;; Support for evaluating clojure code
;; Requirements:
;; - clojure (at least 1.2.0)
;; - clojure-mode
;; - inf-clojure, cider or SLIME
;; For clojure-mode, see https://github.com/clojure-emacs/clojure-mode
;; For cider, see https://github.com/clojure-emacs/cider
;; For inf-clojure, see https://github.com/clojure-emacs/cider
;; For SLIME, the best way to install these components is by following
;; the directions as set out by Phil Hagelberg (Technomancy) on the
;; web page: http://technomancy.us/126
;;; Code:
(require 'ob)
(declare-function cider-current-connection "ext:cider-client" (&optional type))
(declare-function cider-current-ns "ext:cider-client" ())
(declare-function inf-clojure "ext:inf-clojure" (cmd))
(declare-function inf-clojure-cmd "ext:inf-clojure" (project-type))
(declare-function inf-clojure-eval-string "ext:inf-clojure" (code))
(declare-function inf-clojure-project-type "ext:inf-clojure" ())
(declare-function nrepl-dict-get "ext:nrepl-client" (dict key))
(declare-function nrepl-sync-request:eval "ext:nrepl-client" (input connection &optional ns tooling))
(declare-function sesman-start-session "ext:sesman" (system))
(declare-function slime-eval "ext:slime" (sexp &optional package))
(defvar cider-buffer-ns)
(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("clojure" . "clj"))
(add-to-list 'org-babel-tangle-lang-exts '("clojurescript" . "cljs"))
(defvar org-babel-default-header-args:clojure '())
(defvar org-babel-header-args:clojure '((ns . :any) (package . :any)))
(defvar org-babel-default-header-args:clojurescript '())
(defvar org-babel-header-args:clojurescript '((package . :any)))
(defcustom org-babel-clojure-backend nil
"Backend used to evaluate Clojure code blocks."
:group 'org-babel
:type '(choice
(const :tag "inf-clojure" inf-clojure)
(const :tag "cider" cider)
(const :tag "slime" slime)
(const :tag "Not configured yet" nil)))
(defcustom org-babel-clojure-default-ns "user"
"Default Clojure namespace for source block when finding ns failed."
:type 'string
:group 'org-babel)
(defun org-babel-expand-body:clojure (body params)
"Expand BODY according to PARAMS, return the expanded body."
(let* ((vars (org-babel--get-vars params))
(ns (or (cdr (assq :ns params))
(if (eq org-babel-clojure-backend 'cider)
(or cider-buffer-ns
(let ((repl-buf (cider-current-connection)))
(and repl-buf (buffer-local-value
'cider-buffer-ns repl-buf))))
org-babel-clojure-default-ns)))
(result-params (cdr (assq :result-params params)))
(print-level nil)
(print-length nil)
;; Remove comments, they break (let [...] ...) bindings
(body (replace-regexp-in-string "^[ ]*;+.*$" "" body))
(body (org-trim
(concat
;; Source block specified namespace :ns.
(and (cdr (assq :ns params)) (format "(ns %s)\n" ns))
;; Variables binding.
(if (null vars) (org-trim body)
(format "(let [%s]\n%s)"
(mapconcat
(lambda (var)
(format "%S %S" (car var) (cdr var)))
vars
"\n ")
body))))))
(if (or (member "code" result-params)
(member "pp" result-params))
(format "(clojure.pprint/pprint (do %s))" body)
body)))
(defvar ob-clojure-inf-clojure-filter-out)
(defvar ob-clojure-inf-clojure-tmp-output)
(defun ob-clojure-inf-clojure-output (s)
"Store a trimmed version of S in a variable and return S."
(let ((s0 (org-trim
(replace-regexp-in-string
ob-clojure-inf-clojure-filter-out "" s))))
(push s0 ob-clojure-inf-clojure-tmp-output))
s)
(defmacro ob-clojure-with-temp-expanded (expanded params &rest body)
"Run BODY on EXPANDED code block with PARAMS."
(declare (debug (body)) (indent 2))
`(with-temp-buffer
(insert ,expanded)
(goto-char (point-min))
(while (not (looking-at "\\s-*\\'"))
(let* ((beg (point))
(end (progn (forward-sexp) (point)))
(exp (org-babel-expand-body:clojure
(buffer-substring beg end) ,params)))
(sit-for .1)
,@body))))
(defsubst ob-clojure-string-or-list (l)
"Convert list L into a string or a list of list."
(if (and (listp l) (= (length l) 1))
(car l)
(mapcar #'list l)))
(defvar inf-clojure-buffer)
(defvar comint-prompt-regexp)
(defvar inf-clojure-comint-prompt-regexp)
(defun ob-clojure-eval-with-inf-clojure (expanded params)
"Evaluate EXPANDED code block with PARAMS using inf-clojure."
(condition-case nil (require 'inf-clojure)
(user-error "inf-clojure not available"))
;; Maybe initiate the inf-clojure session
(unless (and inf-clojure-buffer
(buffer-live-p (get-buffer inf-clojure-buffer)))
(save-window-excursion
(let* ((alias (cdr (assq :alias params)))
(cmd0 (inf-clojure-cmd (inf-clojure-project-type)))
(cmd (if alias (replace-regexp-in-string
"clojure" (format "clojure -A%s" alias)
cmd0)
cmd0)))
(setq comint-prompt-regexp inf-clojure-comint-prompt-regexp)
(funcall-interactively #'inf-clojure cmd)
(goto-char (point-max))))
(sit-for 1))
;; Now evaluate the code
(setq ob-clojure-inf-clojure-filter-out
(concat "^nil\\|nil$\\|\\s-*"
(or (cdr (assq :ns params))
org-babel-clojure-default-ns)
"=>\\s-*"))
(add-hook 'comint-preoutput-filter-functions
#'ob-clojure-inf-clojure-output)
(setq ob-clojure-inf-clojure-tmp-output nil)
(ob-clojure-with-temp-expanded expanded nil
(inf-clojure-eval-string exp))
(sit-for .5)
(remove-hook 'comint-preoutput-filter-functions
#'ob-clojure-inf-clojure-output)
;; And return the result
(ob-clojure-string-or-list
(delete nil
(mapcar
(lambda (s)
(unless (or (equal "" s)
(string-match-p "^Clojure" s))
s))
(reverse ob-clojure-inf-clojure-tmp-output)))))
(defun ob-clojure-eval-with-cider (expanded params)
"Evaluate EXPANDED code block with PARAMS using cider."
(condition-case nil (require 'cider)
(user-error "cider not available"))
(let ((connection (cider-current-connection (cdr (assq :target params))))
(result-params (cdr (assq :result-params params)))
result0)
(unless connection (sesman-start-session 'CIDER))
(if (not connection)
;; Display in the result instead of using `user-error'
(setq result0 "Please reevaluate when nREPL is connected")
(ob-clojure-with-temp-expanded expanded params
(let ((response (nrepl-sync-request:eval exp connection)))
(push (or (nrepl-dict-get response "root-ex")
(nrepl-dict-get response "ex")
(nrepl-dict-get
response (if (or (member "output" result-params)
(member "pp" result-params))
"out"
"value")))
result0)))
(ob-clojure-string-or-list
(reverse (delete "" (mapcar (lambda (r)
(replace-regexp-in-string "nil" "" r))
result0)))))))
(defun ob-clojure-eval-with-slime (expanded params)
"Evaluate EXPANDED code block with PARAMS using slime."
(condition-case nil (require 'slime)
(user-error "slime not available"))
(with-temp-buffer
(insert expanded)
(slime-eval
`(swank:eval-and-grab-output
,(buffer-substring-no-properties (point-min) (point-max)))
(cdr (assq :package params)))))
(defun org-babel-execute:clojure (body params)
"Execute a block of Clojure code with Babel."
(unless org-babel-clojure-backend
(user-error "You need to customize org-babel-clojure-backend"))
(let* ((expanded (org-babel-expand-body:clojure body params))
(result-params (cdr (assq :result-params params)))
result)
(setq result
(cond
((eq org-babel-clojure-backend 'inf-clojure)
(ob-clojure-eval-with-inf-clojure expanded params))
((eq org-babel-clojure-backend 'cider)
(ob-clojure-eval-with-cider expanded params))
((eq org-babel-clojure-backend 'slime)
(ob-clojure-eval-with-slime expanded params))))
(org-babel-result-cond result-params
result
(condition-case nil (org-babel-script-escape result)
(error result)))))
(defun org-babel-execute:clojurescript (body params)
"Evaluate BODY with PARAMS as ClojureScript code."
(org-babel-execute:clojure body (cons '(:target . "cljs") params)))
(provide 'ob-clojure)
;;; ob-clojure.el ends here
|
