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authorSteve Lee <me@xiangyangli.com>2017-12-13 03:29:05 +0800
committerSteve Lee <me@xiangyangli.com>2017-12-13 03:29:05 +0800
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tree7f6f3de249ffaa59d704a294656f77f14742ce10 /.emacs.d/elpa/org-20171120/ob-clojure.el
parent516df54c4bfd63fda22b49dd05f7cb7a09ab45ec (diff)
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+;;; ob-clojure.el --- Babel Functions for Clojure -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2009-2017 Free Software Foundation, Inc.
+
+;; Author: Joel Boehland, Eric Schulte, Oleh Krehel, Frederick Giasson
+;;
+;; 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 <https://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 'cl-lib)
+(require 'ob)
+
+(declare-function cider-current-connection "ext:cider-client" (&optional type))
+(declare-function cider-current-ns "ext:cider-client" ())
+(declare-function nrepl--merge "ext:nrepl-client" (dict1 dict2))
+(declare-function nrepl-dict-get "ext:nrepl-client" (dict key))
+(declare-function nrepl-dict-put "ext:nrepl-client" (dict key value))
+(declare-function nrepl-request:eval "ext:nrepl-client"
+ (input callback connection &optional session ns line column additional-params))
+(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 nrepl-sync-request-timeout)
+
+(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-sync-nrepl-timeout 10
+ "Timeout value, in seconds, of a Clojure sync call.
+If the value is nil, timeout is disabled."
+ :group 'org-babel
+ :type 'integer
+ :version "26.1"
+ :package-version '(Org . "9.1")
+ :safe #'wholenump)
+
+(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 (assq :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.
+The underlying process performed by the code block can be output
+using the :show-process parameter."
+ (let ((expanded (org-babel-expand-body:clojure body params))
+ (response (list 'dict))
+ result)
+ (cl-case org-babel-clojure-backend
+ (cider
+ (require 'cider)
+ (let ((result-params (cdr (assq :result-params params)))
+ (show (cdr (assq :show-process params))))
+ (if (member show '(nil "no"))
+ ;; Run code without showing the process.
+ (progn
+ (setq response
+ (let ((nrepl-sync-request-timeout
+ org-babel-clojure-sync-nrepl-timeout))
+ (nrepl-sync-request:eval expanded
+ (cider-current-connection)
+ (cider-current-ns))))
+ (setq result
+ (concat
+ (nrepl-dict-get response
+ (if (or (member "output" result-params)
+ (member "pp" result-params))
+ "out"
+ "value"))
+ (nrepl-dict-get response "ex")
+ (nrepl-dict-get response "root-ex")
+ (nrepl-dict-get response "err"))))
+ ;; Show the process in an output buffer/window.
+ (let ((process-buffer (switch-to-buffer-other-window
+ "*Clojure Show Process Sub Buffer*"))
+ status)
+ ;; Run the Clojure code in nREPL.
+ (nrepl-request:eval
+ expanded
+ (lambda (resp)
+ (when (member "out" resp)
+ ;; Print the output of the nREPL in the output buffer.
+ (princ (nrepl-dict-get resp "out") process-buffer))
+ (when (member "ex" resp)
+ ;; In case there is an exception, then add it to the
+ ;; output buffer as well.
+ (princ (nrepl-dict-get resp "ex") process-buffer)
+ (princ (nrepl-dict-get resp "root-ex") process-buffer))
+ (when (member "err" resp)
+ ;; In case there is an error, then add it to the
+ ;; output buffer as well.
+ (princ (nrepl-dict-get resp "err") process-buffer))
+ (nrepl--merge response resp)
+ ;; Update the status of the nREPL output session.
+ (setq status (nrepl-dict-get response "status")))
+ (cider-current-connection)
+ (cider-current-ns))
+
+ ;; Wait until the nREPL code finished to be processed.
+ (while (not (member "done" status))
+ (nrepl-dict-put response "status" (remove "need-input" status))
+ (accept-process-output nil 0.01)
+ (redisplay))
+
+ ;; Delete the show buffer & window when the processing is
+ ;; finalized.
+ (mapc #'delete-window
+ (get-buffer-window-list process-buffer nil t))
+ (kill-buffer process-buffer)
+
+ ;; Put the output or the value in the result section of
+ ;; the code block.
+ (setq result
+ (concat
+ (nrepl-dict-get response
+ (if (or (member "output" result-params)
+ (member "pp" result-params))
+ "out"
+ "value"))
+ (nrepl-dict-get response "ex")
+ (nrepl-dict-get response "root-ex")
+ (nrepl-dict-get response "err")))))))
+ (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 (assq :package params)))))))
+ (org-babel-result-cond (cdr (assq :result-params params))
+ result
+ (condition-case nil (org-babel-script-escape result)
+ (error result)))))
+
+(provide 'ob-clojure)
+
+;;; ob-clojure.el ends here