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authorJose Antonio Ortega Ruiz <jao@gnu.org>2009-03-06 00:47:05 +0100
committerJose Antonio Ortega Ruiz <jao@gnu.org>2009-03-06 00:47:05 +0100
commit754aa7a194c412f52b4733142566ed5e33a04f4f (patch)
tree7296e1cfde7208e5c244e72355eab820c6de2470 /elisp/geiser-xref.el
parent9e91cef8b3d10e7eab88cc16d425fefc36c7321d (diff)
downloadgeiser-chez-754aa7a194c412f52b4733142566ed5e33a04f4f.tar.gz
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New command to display generic methods (C-cC-dg) implemented.
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+;; geiser-xref.el -- utilities for cross-referencing
+
+;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
+
+;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
+;; Start date: Thu Mar 05, 2009 23:03
+
+;; 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:
+
+;; Obtaining cross-reference information (generic's methods, callers, etc.)
+
+;;; Code:
+
+(require' geiser-edit)
+(require 'geiser-eval)
+(require 'geiser-popup)
+(require 'geiser-custom)
+(require 'geiser-base)
+
+(require 'button)
+
+
+;;; Customization:
+(defgroup geiser-xref nil
+ "Options for cross-referencing commands."
+ :group 'geiser)
+
+(geiser-edit--define-custom-visit
+ geiser-xref-follow-link-method geiser-xref
+ "How to visit buffers when following xrefs.")
+
+(geiser-custom--defface xref-link
+ 'link geiser-xref "links in cross-reference buffers")
+
+(geiser-custom--defface xref-header
+ 'bold geiser-xref "headers in cross-reference buffers")
+
+
+;;; Ref button:
+
+(define-button-type 'geiser-xref--button
+ 'action 'geiser-xref--button-action
+ 'face 'geiser-font-lock-xref-link
+ 'follow-link t)
+
+(defun geiser-xref--button-action (button)
+ (let ((location (button-get button 'location))
+ (name (button-get button 'name)))
+ (when location
+ (geiser-edit--try-edit-location name location geiser-xref-follow-link-method))))
+
+(defun geiser-xref--insert-button (xref)
+ (let ((location (cdr (assoc 'location xref)))
+ (signature (cdr (assoc 'signature xref))))
+ (when signature
+ (insert "\t")
+ (if location
+ (insert-text-button (format "%s" signature)
+ :type 'geiser-xref--button
+ 'location location
+ 'name (car signature)
+ 'help-echo (format "%s in %s"
+ (car signature)
+ (geiser-edit--location-file location)))
+ (insert (format "%s" signature)))
+ (newline))))
+
+
+;;; Buffer and mode:
+
+(geiser-popup--define xref "*Geiser xref*" geiser-xref-mode)
+
+(defvar geiser-xref-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (set-keymap-parent map button-buffer-map)
+ map))
+
+(defun geiser-xref-mode ()
+ "Major mode for displaying cross-references.
+\\{geiser-xref-mode-map}"
+ (interactive)
+ (kill-all-local-variables)
+ (buffer-disable-undo)
+ (use-local-map geiser-xref-mode-map)
+ (set-syntax-table scheme-mode-syntax-table)
+ (setq mode-name "Geiser Xref")
+ (setq major-mode 'geiser-xref-mode)
+ (setq buffer-read-only t))
+
+
+;;; Generic's methods:
+
+(defun geiser-xref--display-generic-methods (generic res)
+ (geiser-xref--with-buffer
+ (erase-buffer)
+ (geiser--insert-with-face (format "Methods for generic '%s'" generic)
+ 'geiser-font-lock-xref-header)
+ (newline 2)
+ (mapc 'geiser-xref--insert-button res))
+ (geiser-xref--pop-to-buffer))
+
+(defun geiser-xref-generic-methods (&optional arg)
+ "Display information about known methods of a given generic.
+With prefix, ask for the name of the generic."
+ (interactive "P")
+ (let* ((name (or (and (not arg) (symbol-at-point))
+ (read-string "Generic: " nil nil (symbol-at-point))))
+ (name (and name (format "%s" name)))
+ (res (geiser-eval--send/result
+ `(:eval ((:ge generic-methods) (quote (:scm ,name)))))))
+ (if (or (not res) (not (listp res)))
+ (message "No methods found for '%s'" name)
+ (geiser-xref--display-generic-methods name res))))
+
+
+
+(provide 'geiser-xref)
+;;; geiser-xref.el ends here