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;; geiser-doc.el -- accessing documentation
;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
;; Start date: Sat Feb 14, 2009 14:09
;; This file 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.
;; This file 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Comentary:
;; Utilities for accessing docstrings and texinfo documentation.
;;; Code:
(require 'geiser-completion)
(require 'geiser-eval)
(require 'geiser-syntax)
(require 'geiser-popup)
(require 'geiser-custom)
(require 'geiser-base)
;;; Customization:
(defgroup geiser-doc nil
"Options for documentation buffers."
:group 'geiser)
(geiser-custom--defface doc-title
'bold geiser-doc "article titles in documentation buffers")
(geiser-custom--defface doc-link
'link geiser-doc "links in documentation buffers")
;;; Documentation buffer:
(geiser-popup--define doc "*Geiser documentation*" fundamental-mode)
;;; Docstrings:
(defun geiser-doc--get-docstring (symbol)
(geiser-eval--send/result `(:eval ((:ge symbol-documentation) ',symbol))))
(defun geiser-doc--get-module-children (module)
(geiser-eval--send/result `(:eval ((:ge module-children) (quote (:scm ,module))))))
;;; Auxiliary functions:
(defun geiser-doc--insert-title (title)
(let ((p (point)))
(insert (format "%s" title))
(put-text-property p (point) 'face 'geiser-font-lock-doc-title))
(newline))
(defun geiser-doc--insert-list (title lst)
(when lst
(geiser-doc--insert-title title)
(newline)
(dolist (w lst)
(insert (format "\t- %s\n" w)))
(newline)))
;;; Commands:
(defun geiser-doc-symbol-at-point (&optional arg)
"Get docstring for symbol at point.
With prefix argument, ask for symbol (with completion)."
(interactive "P")
(let ((symbol (or (and (not arg) (symbol-at-point))
(geiser-completion--read-symbol "Symbol: " (symbol-at-point)))))
(when symbol
(let ((ds (geiser-doc--get-docstring symbol)))
(if (or (not ds) (not (listp ds)))
(message "No documentation available for '%s'" symbol)
(geiser-doc--with-buffer
(erase-buffer)
(geiser-doc--insert-title (cdr (assoc 'signature ds)))
(newline)
(insert (or (cdr (assoc 'docstring ds)) ""))
(goto-line (point-min)))
(geiser-doc--pop-to-buffer))))))
(defun geiser-doc-module (module)
"Display information about a given module."
(interactive (list (geiser-completion--read-module)))
(let ((children (geiser-doc--get-module-children module)))
(if (not children)
(message "No info available for %s" module)
(geiser-doc--with-buffer
(erase-buffer)
(geiser-doc--insert-title (format "%s" module))
(newline)
(geiser-doc--insert-list "Procedures:" (cdr (assoc 'procs children)))
(geiser-doc--insert-list "Variables:" (cdr (assoc 'vars children)))
(geiser-doc--insert-list "Submodules:" (cdr (assoc 'modules children)))
(goto-char (point-min)))
(geiser-doc--pop-to-buffer))))
(provide 'geiser-doc)
;;; geiser-doc.el ends here
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