all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob 7c9896287bd5ec5395656a34b313798c7764468f 5653 bytes (raw)
name: contrib/lisp/org-elisp-symbol.el 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
 
;;; org-elisp-symbol.el --- Org links to emacs-lisp symbols
;;
;; Copyright 2007-2016 Free Software Foundation, Inc.
;;
;; Author: Bastien Guerry
;; Version: 0.2
;; Keywords: org, remember, lisp
;; URL: http://www.cognition.ens.fr/~guerry/u/org-elisp-symbol.el
;;
;; This file is not part of GNU Emacs.
;;
;; This program 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, or (at your option)
;; any later version.
;;
;; This program 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:
;;
;; Org-mode already lets you store/insert links to emacs-lisp files,
;; just like any other file.  This package lets you precisely link to
;; any emacs-lisp symbol and access useful information about the symbol.
;;
;; Here is the list of available properties when linking from a elisp-symbol:
;;
;; :name        The symbol's name.
;; :stype       The symbol's type (commandp, function, etc.)
;; :def         The function used to set the symbol's value (defun, etc.)
;; :keys        The keys associated with the command.
;; :args        The arguments of the function.
;; :docstring   The docstring of the symbol.
;; :doc         The first line of the dostring.
;; :comment     A comment line just above the sexp, if any.
;; :fixme       A FIXME comment line just above the sexp, if any.
;;
;; Let's say we have a defun like this one:
;;
;; ;; FIXME update docstring
;; (defun org-export-latex-lists ()
;;   "Convert lists to LaTeX."
;;   (goto-char (point-min))
;;   (while (re-search-forward org-export-latex-list-beginning-re nil t)
;;     (beginning-of-line)
;;     (insert (org-list-to-latex (org-list-parse-list t)) "\n")))
;;
;; And a remember template like:
;;
;; (setq org-remember-templates
;;   '((?s "* DEBUG `%:name' (%:args)\n\n%?\n\nFixme: %:fixme\n  \
;;          Doc: \"%:doc\"\n\n%a")))
;;
;; Then M-x `org-remember' on this sexp will produce this buffer:
;;
;; =====================================================================
;; * DEBUG `org-export-latex-lists' ()
;;
;; <== point
;;
;; Fixme: update the docstring
;; Doc: "Convert lists to LaTeX."
;;
;; [[file:~/path/file.el::defun%20my-func][Function: my-func]]
;; =====================================================================
;;
;; Put this file into your load-path and the following into your ~/.emacs:
;;   (require 'org-elisp-symbol)

;;; Code:

(provide 'org-elisp-symbol)

(require 'org)

(org-link-set-parameters "elisp-symbol"
			 :follow #'org-elisp-symbol-open
			 :store #'org-elisp-symbol-store-link)

(defun org-elisp-symbol-open (path)
  "Visit the emacs-lisp elisp-symbol at PATH."
  (let* ((search (when (string-match "::\\(.+\\)\\'" path)
		   (match-string 1 path)))
	 (path (substring path 0 (match-beginning 0))))
    (org-open-file path t nil search)))

(defun org-elisp-symbol-store-link ()
  "Store a link to an emacs-lisp elisp-symbol."
  (when (eq major-mode 'emacs-lisp-mode)
    (save-excursion
      (or (looking-at "^(") (beginning-of-defun))
      (looking-at "^(\\([a-z]+\\) \\([^)\n ]+\\) ?\n?[ \t]*\\(?:(\\(.*\\))\\)?")
      (let* ((end (save-excursion
		    (save-match-data
		      (end-of-defun) (point))))
	     (def (match-string 1))
	     (name (match-string 2))
	     (sym-name (intern-soft name))
	     (stype (cond ((commandp sym-name) "Command")
			  ((functionp sym-name) "Function")
			  ((user-variable-p sym-name) "User variable")
			  ((string= def "defvar") "Variable")
			  ((string= def "defmacro") "Macro")
			  ((string= def "defun") "Function or command")
			  (t "Symbol")))
	     (args (if (match-string 3)
		       (mapconcat (lambda (a) (unless (string-match "^&" a) a))
				  (split-string (match-string 3)) " ")
		     "no arg"))
	     (docstring (cond ((functionp sym-name)
			       (or (documentation sym-name)
				   "[no documentation]"))
			      ((string-match "[Vv]ariable" stype)
			       (documentation-property sym-name
						       'variable-documentation))
			      (t "no documentation")))
	     (doc (and (string-match "^\\([^\n]+\\)$" docstring)
		       (match-string 1 docstring)))
	     (fixme (save-excursion
		      (beginning-of-defun) (end-of-defun)
		      (if (re-search-forward "^;+ ?FIXME[ :]*\\(.*\\)$" end t)
			  (match-string 1) "nothing to fix")))
	     (comment (save-excursion
			(beginning-of-defun) (end-of-defun)
			(if (re-search-forward "^;;+ ?\\(.*\\)$" end t)
			    (match-string 1) "no comment")))
	     keys keys-desc link description)
	(if (equal stype "Command")
	    (setq keys (where-is-internal sym-name)
		  keys-desc
		  (if keys (mapconcat 'key-description keys " ") "none")))
	(setq link (concat "file:" (abbreviate-file-name buffer-file-name)
			   "::" def " " name))
	(setq description (concat stype ": " name))
	(org-store-link-props
	 :type "elisp-symbol"
	 :link link
	 :description description
	 :def def
	 :name name
	 :stype stype
	 :args args
	 :keys keys-desc
	 :docstring docstring
	 :doc doc
	 :fixme fixme
	 :comment comment)))))

(provide 'org-elisp-symbol)

\f
;;;;##########################################################################
;;;;  User Options, Variables
;;;;##########################################################################

;;; org-elisp-symbol.el ends here

debug log:

solving 7c98962 ...
found 7c98962 in https://git.savannah.gnu.org/cgit/emacs.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.