;;; ob-clojure.el --- Babel Functions for Clojure -*- lexical-binding: t; -*- ;; Copyright (C) 2009-2016 Free Software Foundation, Inc. ;; Author: Joel Boehland, Eric Schulte, Oleh Krehel ;; ;; Keywords: literate programming, reproducible research ;; Homepage: http://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 <http://www.gnu.org/licenses/>. ;;; Commentary: ;; Support for evaluating clojure code ;; Requirements: ;; - clojure (at least 1.2.0) ;; - clojure-mode ;; - either cider or SLIME ;; For Cider, 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) (eval-when-compile (require 'cl)) (declare-function cider-current-connection "ext:cider-client" (&optional type)) (declare-function cider-current-session "ext:cider-client" ()) (declare-function nrepl-dict-get "ext:nrepl-client" (dict key)) (declare-function nrepl-sync-request:eval "ext:nrepl-client" (input connection session &optional ns)) (declare-function org-trim "org" (s &optional keep-lead)) (declare-function slime-eval "ext:slime" (sexp &optional package)) (defvar org-babel-tangle-lang-exts) (add-to-list 'org-babel-tangle-lang-exts '("clojure" . "clj")) (defvar org-babel-default-header-args:clojure '()) (defvar org-babel-header-args:clojure '((package . :any))) (defcustom org-babel-clojure-backend (cond ((featurep 'cider) 'cider) (t 'slime)) "Backend used to evaluate Clojure code blocks." :group 'org-babel :type '(choice (const :tag "cider" cider) (const :tag "SLIME" slime))) (defun org-babel-expand-body:clojure (body params) "Expand BODY according to PARAMS, return the expanded body." (let* ((vars (org-babel--get-vars params)) (result-params (cdr (assoc :result-params params))) (print-level nil) (print-length nil) (body (org-trim (if (null vars) (org-trim body) (concat "(let [" (mapconcat (lambda (var) (format "%S (quote %S)" (car var) (cdr var))) vars "\n ") "]\n" body ")"))))) (if (or (member "code" result-params) (member "pp" result-params)) (format "(clojure.pprint/pprint (do %s))" body) body))) (defun org-babel-execute:clojure (body params) "Execute a block of Clojure code with Babel." (let ((expanded (org-babel-expand-body:clojure body params)) result) (case org-babel-clojure-backend (cider (require 'cider) (let ((result-params (cdr (assoc :result-params params)))) (setq result (nrepl-dict-get (nrepl-sync-request:eval expanded (cider-current-connection) (cider-current-session)) (if (or (member "output" result-params) (member "pp" result-params)) "out" "value"))))) (slime (require 'slime) (with-temp-buffer (insert expanded) (setq result (slime-eval `(swank:eval-and-grab-output ,(buffer-substring-no-properties (point-min) (point-max))) (cdr (assoc :package params))))))) (org-babel-result-cond (cdr (assoc :result-params params)) result (condition-case nil (org-babel-script-escape result) (error result))))) (provide 'ob-clojure) ;;; ob-clojure.el ends here