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authorJose Antonio Ortega Ruiz <jao@gnu.org>2009-02-17 21:56:23 +0100
committerJose Antonio Ortega Ruiz <jao@gnu.org>2009-02-17 21:56:23 +0100
commit606ebcefb7ccc160f3dd9583685d30345b2d95b6 (patch)
treeed679bf9f35bd13d5c3b504967b5242cd1763e0c /elisp
parent9f744aa5e4e032cfe413673fa7e875ab16ce8600 (diff)
downloadgeiser-guile-606ebcefb7ccc160f3dd9583685d30345b2d95b6.tar.gz
geiser-guile-606ebcefb7ccc160f3dd9583685d30345b2d95b6.tar.bz2
Document browser improvements: history and links.
Diffstat (limited to 'elisp')
-rw-r--r--elisp/geiser-doc.el209
1 files changed, 185 insertions, 24 deletions
diff --git a/elisp/geiser-doc.el b/elisp/geiser-doc.el
index a7d6eae..4e65b67 100644
--- a/elisp/geiser-doc.el
+++ b/elisp/geiser-doc.el
@@ -31,6 +31,8 @@
(require 'geiser-custom)
(require 'geiser-base)
+(require 'button)
+
;;; Customization:
@@ -45,18 +47,78 @@
'link geiser-doc "links in documentation buffers")
-;;; Documentation buffer:
+;;; Documentation browser history:
+
+(defvar geiser-doc-history-size 50)
+
+(defun geiser-doc--make-history ()
+ (list nil ; current
+ (make-ring geiser-doc-history-size) ; previous
+ (make-ring geiser-doc-history-size))) ; next
+
+(defsubst geiser-doc--history-current ()
+ (car geiser-doc--history))
+
+(defun geiser-doc--history-push (link)
+ (unless (equal link (car geiser-doc--history))
+ (let ((next (geiser-doc--history-next)))
+ (unless (equal link next)
+ (when next (geiser-doc--history-previous))
+ (ring-insert (nth 1 geiser-doc--history) (car geiser-doc--history))
+ (setcar geiser-doc--history link))))
+ link)
-(geiser-popup--define doc "*Geiser documentation*" fundamental-mode)
+(defun geiser-doc--history-next (&optional forget-current)
+ (when (not (ring-empty-p (nth 2 geiser-doc--history)))
+ (when (and (car geiser-doc--history) (not forget-current))
+ (ring-insert (nth 1 geiser-doc--history) (car geiser-doc--history)))
+ (setcar geiser-doc--history (ring-remove (nth 2 geiser-doc--history) 0))))
+
+(defun geiser-doc--history-previous (&optional forget-current)
+ (when (not (ring-empty-p (nth 1 geiser-doc--history)))
+ (when (and (car geiser-doc--history) (not forget-current))
+ (ring-insert (nth 2 geiser-doc--history) (car geiser-doc--history)))
+ (setcar geiser-doc--history (ring-remove (nth 1 geiser-doc--history) 0))))
+
+(defvar geiser-doc--history (geiser-doc--make-history))
-;;; Docstrings:
+;;; Links
-(defun geiser-doc--get-docstring (symbol)
- (geiser-eval--send/result `(:eval ((:ge symbol-documentation) ',symbol))))
+(defsubst geiser-doc--make-link (target module)
+ (list target module))
-(defun geiser-doc--get-module-children (module)
- (geiser-eval--send/result `(:eval ((:ge module-children) (quote (:scm ,module))))))
+(defsubst geiser-doc--link-target (link)
+ (nth 0 link))
+
+(defsubst geiser-doc--link-module (link)
+ (nth 1 link))
+
+(defun geiser-doc--follow-link (link)
+ (let ((target (geiser-doc--link-target link))
+ (module (geiser-doc--link-module link)))
+ (when target
+ (if (symbolp target)
+ (geiser-doc-symbol target module)
+ (geiser-doc-module (format "%s" target))))))
+
+(defun geiser-doc--button-action (button)
+ (let ((link (button-get button 'geiser-link)))
+ (when link (geiser-doc--follow-link link))))
+
+(define-button-type 'geiser-doc--button
+ 'action 'geiser-doc--button-action
+ 'face 'geiser-font-lock-doc-link
+ 'follow-link t)
+
+(defun geiser-doc--insert-button (target module)
+ (let ((link (geiser-doc--make-link target module))
+ (text (format "%s" target))
+ (help (if module (format "%s in module %s" target module) "")))
+ (insert-text-button text
+ :type 'geiser-doc--button
+ 'geiser-link link
+ 'help-echo help)))
;;; Auxiliary functions:
@@ -67,51 +129,150 @@
(put-text-property p (point) 'face 'geiser-font-lock-doc-title))
(newline))
-(defun geiser-doc--insert-list (title lst)
+(defun geiser-doc--insert-list (title lst module)
(when lst
(geiser-doc--insert-title title)
(newline)
(dolist (w lst)
- (insert (format "\t- %s\n" w)))
+ (insert (format "\t- "))
+ (geiser-doc--insert-button w module)
+ (newline))
(newline)))
+(make-local-variable
+ (defvar geiser-doc--buffer-link nil))
+
;;; Commands:
+(defun geiser-doc--get-docstring (symbol module)
+ (geiser-eval--send/result `(:eval ((:ge symbol-documentation) ',symbol) ,module)))
+
+(defun geiser-doc--get-module-children (module)
+ (geiser-eval--send/result `(:eval ((:ge module-children) (quote (:scm ,module))))))
+
+(defun geiser-doc-symbol (symbol &optional module)
+ (let* ((module (or module
+ (geiser-syntax--buffer-module)))
+ (ds (geiser-doc--get-docstring symbol module)))
+ (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)))
+ (setq geiser-doc--buffer-link
+ (geiser-doc--history-push (geiser-doc--make-link symbol module)))
+ (geiser-doc--pop-to-buffer))))
+
(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))))))
+ (when symbol (geiser-doc-symbol symbol))))
+
(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)))
+ (let ((children (geiser-doc--get-module-children module))
+ (mod-sym (car (read-from-string 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)))
+ (geiser-doc--insert-list "Procedures:"
+ (cdr (assoc 'procs children))
+ mod-sym)
+ (geiser-doc--insert-list "Variables:"
+ (cdr (assoc 'vars children))
+ mod-sym)
+ (geiser-doc--insert-list "Submodules:"
+ (cdr (assoc 'modules children))
+ mod-sym)
(goto-char (point-min)))
+ (setq geiser-doc--buffer-link
+ (geiser-doc--history-push (geiser-doc--make-link (car (read-from-string module))
+ nil)))
(geiser-doc--pop-to-buffer))))
+(defun geiser-doc-next (&optional forget-current)
+ "Go to next page in documentation browser.
+With prefix, the current page is deleted from history."
+ (interactive "P")
+ (let ((link (geiser-doc--history-next forget-current)))
+ (unless link (error "No next page"))
+ (geiser-doc--follow-link link)))
+
+(defun geiser-doc-previous (&optional forget-current)
+ "Go to previous page in documentation browser.
+With prefix, the current page is deleted from history."
+ (interactive "P")
+ (let ((link (geiser-doc--history-previous forget-current)))
+ (unless link (error "No previous page"))
+ (geiser-doc--follow-link link)))
+
+(defun geiser-doc-kill-page ()
+ "Kill current page if a previous or next one exists."
+ (interactive)
+ (condition-case nil
+ (geiser-doc-previous t)
+ (error (geiser-doc-next t))))
+
+(defun geiser-doc-refresh ()
+ "Refresh the contents of current page."
+ (interactive)
+ (when geiser-doc--buffer-link
+ (geiser-doc--follow-link geiser-doc--buffer-link)))
+
+(defun geiser-doc-clean-history ()
+ "Clean up the document browser history."
+ (interactive)
+ (when (y-or-n-p "Clean browsing history? ")
+ (setq geiser-doc--history (geiser-doc--make-history))
+ (geiser-doc-refresh))
+ (message ""))
+
+
+;;; Documentation browser and mode:
+
+(defvar geiser-doc-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (set-keymap-parent map button-buffer-map)
+ (define-key map "a" 'geiser-apropos)
+ (define-key map "c" 'geiser-doc-clean-history)
+ (define-key map "k" 'geiser-doc-kill-page)
+ (define-key map "n" 'geiser-doc-next)
+ (define-key map "l" 'geiser-doc-previous)
+ (define-key map "p" 'geiser-doc-previous)
+ (define-key map "r" 'geiser-doc-refresh)
+ (define-key map (kbd "SPC") 'scroll-up)
+ (define-key map (kbd "S-SPC") 'scroll-down)
+ (define-key map "\M-." 'geiser-edit-symbol-at-point)
+ (define-key map "\C-cz" 'run-guile)
+ (define-key map "\C-c\C-z" 'run-guile)
+ map))
+
+(defun geiser-doc-mode ()
+ "Major mode for browsing scheme documentation.
+\\{geiser-doc-mode-map}"
+ (interactive)
+ (kill-all-local-variables)
+ (buffer-disable-undo)
+ (use-local-map geiser-doc-mode-map)
+ (set-syntax-table scheme-mode-syntax-table)
+ (setq mode-name "Geiser Doc")
+ (setq major-mode 'geiser-doc-mode)
+ (setq buffer-read-only t))
+
+(geiser-popup--define doc "*Geiser documentation*" geiser-doc-mode)
(provide 'geiser-doc)