255 lines
9.0 KiB
EmacsLisp
255 lines
9.0 KiB
EmacsLisp
;;; ob-clojure.el --- Babel Functions for Clojure -*- lexical-binding: t; -*-
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;; Copyright (C) 2009-2021 Free Software Foundation, Inc.
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;; Author: Joel Boehland, Eric Schulte, Oleh Krehel, Frederick Giasson
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;; Maintainer: Bastien Guerry <bzg@gnu.org>
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;;
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;; Keywords: literate programming, reproducible research
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;; Homepage: https://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Support for evaluating clojure code
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;; Requirements:
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;; - clojure (at least 1.2.0)
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;; - clojure-mode
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;; - inf-clojure, cider or SLIME
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;; For clojure-mode, see https://github.com/clojure-emacs/clojure-mode
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;; For cider, see https://github.com/clojure-emacs/cider
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;; For inf-clojure, see https://github.com/clojure-emacs/cider
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;; For SLIME, the best way to install these components is by following
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;; the directions as set out by Phil Hagelberg (Technomancy) on the
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;; web page: https://technomancy.us/126
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;;; Code:
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(require 'ob)
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(declare-function cider-current-connection "ext:cider-client" (&optional type))
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(declare-function cider-current-ns "ext:cider-client" ())
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(declare-function inf-clojure "ext:inf-clojure" (cmd))
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(declare-function inf-clojure-cmd "ext:inf-clojure" (project-type))
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(declare-function inf-clojure-eval-string "ext:inf-clojure" (code))
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(declare-function inf-clojure-project-type "ext:inf-clojure" ())
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(declare-function nrepl-dict-get "ext:nrepl-client" (dict key))
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(declare-function nrepl-sync-request:eval "ext:nrepl-client" (input connection &optional ns tooling))
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(declare-function sesman-start-session "ext:sesman" (system))
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(declare-function slime-eval "ext:slime" (sexp &optional package))
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(defvar cider-buffer-ns)
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("clojure" . "clj"))
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(add-to-list 'org-babel-tangle-lang-exts '("clojurescript" . "cljs"))
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(defvar org-babel-default-header-args:clojure '())
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(defvar org-babel-header-args:clojure '((ns . :any) (package . :any)))
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(defvar org-babel-default-header-args:clojurescript '())
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(defvar org-babel-header-args:clojurescript '((package . :any)))
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(defcustom org-babel-clojure-backend nil
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"Backend used to evaluate Clojure code blocks."
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:group 'org-babel
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:type '(choice
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(const :tag "inf-clojure" inf-clojure)
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(const :tag "cider" cider)
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(const :tag "slime" slime)
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(const :tag "Not configured yet" nil)))
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(defcustom org-babel-clojure-default-ns "user"
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"Default Clojure namespace for source block when finding ns failed."
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:type 'string
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:group 'org-babel)
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(defun org-babel-expand-body:clojure (body params)
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"Expand BODY according to PARAMS, return the expanded body."
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(let* ((vars (org-babel--get-vars params))
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(ns (or (cdr (assq :ns params))
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(if (eq org-babel-clojure-backend 'cider)
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(or cider-buffer-ns
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(let ((repl-buf (cider-current-connection)))
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(and repl-buf (buffer-local-value
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'cider-buffer-ns repl-buf))))
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org-babel-clojure-default-ns)))
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(result-params (cdr (assq :result-params params)))
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(print-level nil)
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(print-length nil)
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;; Remove comments, they break (let [...] ...) bindings
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(body (replace-regexp-in-string "^[ ]*;+.*$" "" body))
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(body (org-trim
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(concat
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;; Source block specified namespace :ns.
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(and (cdr (assq :ns params)) (format "(ns %s)\n" ns))
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;; Variables binding.
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(if (null vars) (org-trim body)
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(format "(let [%s]\n%s)"
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(mapconcat
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(lambda (var)
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(format "%S %S" (car var) (cdr var)))
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vars
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"\n ")
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body))))))
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(if (or (member "code" result-params)
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(member "pp" result-params))
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(format "(clojure.pprint/pprint (do %s))" body)
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body)))
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(defvar ob-clojure-inf-clojure-filter-out)
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(defvar ob-clojure-inf-clojure-tmp-output)
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(defun ob-clojure-inf-clojure-output (s)
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"Store a trimmed version of S in a variable and return S."
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(let ((s0 (org-trim
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(replace-regexp-in-string
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ob-clojure-inf-clojure-filter-out "" s))))
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(push s0 ob-clojure-inf-clojure-tmp-output))
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s)
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(defmacro ob-clojure-with-temp-expanded (expanded params &rest body)
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"Run BODY on EXPANDED code block with PARAMS."
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(declare (debug (body)) (indent 2))
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`(with-temp-buffer
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(insert ,expanded)
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(goto-char (point-min))
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(while (not (looking-at "\\s-*\\'"))
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(let* ((beg (point))
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(end (progn (forward-sexp) (point)))
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(exp (org-babel-expand-body:clojure
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(buffer-substring beg end) ,params)))
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(sit-for .1)
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,@body))))
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(defsubst ob-clojure-string-or-list (l)
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"Convert list L into a string or a list of list."
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(if (and (listp l) (= (length l) 1))
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(car l)
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(mapcar #'list l)))
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(defvar inf-clojure-buffer)
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(defvar comint-prompt-regexp)
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(defvar inf-clojure-comint-prompt-regexp)
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(defun ob-clojure-eval-with-inf-clojure (expanded params)
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"Evaluate EXPANDED code block with PARAMS using inf-clojure."
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(condition-case nil (require 'inf-clojure)
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(user-error "inf-clojure not available"))
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;; Maybe initiate the inf-clojure session
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(unless (and inf-clojure-buffer
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(buffer-live-p (get-buffer inf-clojure-buffer)))
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(save-window-excursion
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(let* ((alias (cdr (assq :alias params)))
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(cmd0 (inf-clojure-cmd (inf-clojure-project-type)))
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(cmd (if alias (replace-regexp-in-string
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"clojure" (format "clojure -A%s" alias)
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cmd0)
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cmd0)))
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(setq comint-prompt-regexp inf-clojure-comint-prompt-regexp)
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(funcall-interactively #'inf-clojure cmd)
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(goto-char (point-max))))
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(sit-for 1))
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;; Now evaluate the code
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(setq ob-clojure-inf-clojure-filter-out
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(concat "^nil\\|nil$\\|\\s-*"
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(or (cdr (assq :ns params))
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org-babel-clojure-default-ns)
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"=>\\s-*"))
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(add-hook 'comint-preoutput-filter-functions
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#'ob-clojure-inf-clojure-output)
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(setq ob-clojure-inf-clojure-tmp-output nil)
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(ob-clojure-with-temp-expanded expanded nil
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(inf-clojure-eval-string exp))
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(sit-for .5)
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(remove-hook 'comint-preoutput-filter-functions
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#'ob-clojure-inf-clojure-output)
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;; And return the result
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(ob-clojure-string-or-list
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(delete nil
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(mapcar
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(lambda (s)
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(unless (or (equal "" s)
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(string-match-p "^Clojure" s))
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s))
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(reverse ob-clojure-inf-clojure-tmp-output)))))
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(defun ob-clojure-eval-with-cider (expanded params)
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"Evaluate EXPANDED code block with PARAMS using cider."
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(condition-case nil (require 'cider)
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(user-error "cider not available"))
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(let ((connection (cider-current-connection (cdr (assq :target params))))
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(result-params (cdr (assq :result-params params)))
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result0)
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(unless connection (sesman-start-session 'CIDER))
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(if (not connection)
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;; Display in the result instead of using `user-error'
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(setq result0 "Please reevaluate when nREPL is connected")
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(ob-clojure-with-temp-expanded expanded params
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(let ((response (nrepl-sync-request:eval exp connection)))
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(push (or (nrepl-dict-get response "root-ex")
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(nrepl-dict-get response "ex")
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(nrepl-dict-get
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response (if (or (member "output" result-params)
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(member "pp" result-params))
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"out"
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"value")))
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result0)))
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(ob-clojure-string-or-list
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(reverse (delete "" (mapcar (lambda (r)
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(replace-regexp-in-string "nil" "" r))
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result0)))))))
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(defun ob-clojure-eval-with-slime (expanded params)
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"Evaluate EXPANDED code block with PARAMS using slime."
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(condition-case nil (require 'slime)
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(user-error "slime not available"))
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(with-temp-buffer
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(insert expanded)
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(slime-eval
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`(swank:eval-and-grab-output
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,(buffer-substring-no-properties (point-min) (point-max)))
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(cdr (assq :package params)))))
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(defun org-babel-execute:clojure (body params)
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"Execute a block of Clojure code with Babel."
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(unless org-babel-clojure-backend
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(user-error "You need to customize org-babel-clojure-backend"))
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(let* ((expanded (org-babel-expand-body:clojure body params))
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(result-params (cdr (assq :result-params params)))
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result)
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(setq result
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(cond
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((eq org-babel-clojure-backend 'inf-clojure)
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(ob-clojure-eval-with-inf-clojure expanded params))
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((eq org-babel-clojure-backend 'cider)
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(ob-clojure-eval-with-cider expanded params))
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((eq org-babel-clojure-backend 'slime)
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(ob-clojure-eval-with-slime expanded params))))
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(org-babel-result-cond result-params
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result
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(condition-case nil (org-babel-script-escape result)
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(error result)))))
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(defun org-babel-execute:clojurescript (body params)
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"Evaluate BODY with PARAMS as ClojureScript code."
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(org-babel-execute:clojure body (cons '(:target . "cljs") params)))
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(provide 'ob-clojure)
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;;; ob-clojure.el ends here
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