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elpa/org-20171030/ob-emacs-lisp.el

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+;;; ob-emacs-lisp.el --- Babel Functions for Emacs-lisp Code -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2009-2017 Free Software Foundation, Inc.
+
+;; Author: Eric Schulte
+;; 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:
+
+;; Org-Babel support for evaluating emacs-lisp code
+
+;;; Code:
+(require 'ob)
+
+(defconst org-babel-header-args:emacs-lisp '((lexical . :any))
+  "Emacs-lisp specific header arguments.")
+
+(defvar org-babel-default-header-args:emacs-lisp '((:lexical . "no"))
+  "Default arguments for evaluating an emacs-lisp source block.
+
+A value of \"yes\" or t causes src blocks to be eval'd using
+lexical scoping.  It can also be an alist mapping symbols to
+their value.  It is used as the optional LEXICAL argument to
+`eval', which see.")
+
+(defun org-babel-expand-body:emacs-lisp (body params)
+  "Expand BODY according to PARAMS, return the expanded body."
+  (let ((vars (org-babel--get-vars params))
+	(print-level nil)
+	(print-length nil))
+    (if (null vars) (concat body "\n")
+      (format "(let (%s)\n%s\n)"
+	      (mapconcat
+	       (lambda (var)
+		 (format "%S" (print `(,(car var) ',(cdr var)))))
+	       vars "\n      ")
+	      body))))
+
+(defun org-babel-execute:emacs-lisp (body params)
+  "Execute a block of emacs-lisp code with Babel."
+  (save-window-excursion
+    (let* ((lexical (cdr (assq :lexical params)))
+	   (result-params (cdr (assq :result-params params)))
+	   (body (format (if (member "output" result-params)
+			     "(with-output-to-string %s\n)"
+			   "(progn %s\n)")
+			 (org-babel-expand-body:emacs-lisp body params)))
+	   (result (eval (read (if (or (member "code" result-params)
+				       (member "pp" result-params))
+				   (concat "(pp " body ")")
+				 body))
+			 (if (listp lexical)
+			     lexical
+			   (member lexical '("yes" "t"))))))
+      (org-babel-result-cond result-params
+	(let ((print-level nil)
+              (print-length nil))
+          (if (or (member "scalar" result-params)
+                  (member "verbatim" result-params))
+              (format "%S" result)
+            (format "%s" result)))
+	(org-babel-reassemble-table
+	 result
+         (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))))))))
+
+(org-babel-make-language-alias "elisp" "emacs-lisp")
+
+(provide 'ob-emacs-lisp)
+
+
+
+;;; ob-emacs-lisp.el ends here