New command to get docstrings (C-cC-d).

6 files changed, 76 insertions, 2 deletions

diff --git a/elisp/geiser-completion.el b/elisp/geiser-completion.el
index dd0c33c..3a36187 100644
--- a/elisp/geiser-completion.el
+++ b/elisp/geiser-completion.el
@@ -183,12 +183,14 @@ terminates a current completion."
          (partial (if (eq partial t) prefix partial)))
     (cons completions partial)))
 
+(defvar geiser-completion--symbol-history nil)
+
 (defun geiser-completion--read-symbol (prompt &optional default history)
   (let ((minibuffer-local-completion-map geiser-completion--minibuffer-map))
     (completing-read prompt
                      geiser-completion--symbol-list-func
                      nil nil nil
-                     history
+                     (or history geiser-completion--symbol-history)
                      (or default (symbol-at-point)))))
 
 (defun geiser--respecting-message (format &rest format-args)
diff --git a/elisp/geiser-doc.el b/elisp/geiser-doc.el
new file mode 100644
index 0000000..7113b25
--- /dev/null
+++ b/elisp/geiser-doc.el
@@ -0,0 +1,63 @@
+;; 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-popup)
+(require 'geiser-base)
+
+
+;;; Documentation buffer:
+
+(geiser-popup--define doc "*Geiser documentation*" fundamental-mode)
+
+
+;;; Docstrings:
+
+(defun geiser-doc--get-docstring (symbol)
+  (geiser-eval--send/result `(:gs ((:ge docstring) ',symbol))))
+
+
+;;; 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 (not (stringp ds))
+            (message "No docstring available for '%s'" symbol)
+          (geiser-doc--with-buffer
+            (erase-buffer)
+            (insert ds))
+          (geiser-doc--pop-to-buffer))))))
+
+
+(provide 'geiser-doc)
+;;; geiser-doc.el ends here
diff --git a/elisp/geiser-mode.el b/elisp/geiser-mode.el
index aed018f..812810a 100644
--- a/elisp/geiser-mode.el
+++ b/elisp/geiser-mode.el
@@ -25,6 +25,7 @@
 
 ;;; Code:
 
+(require 'geiser-doc)
 (require 'geiser-compile)
 (require 'geiser-completion)
 (require 'geiser-edit)
@@ -154,6 +155,7 @@ interacting with the Geiser REPL is at your disposal.
 (define-key geiser-mode-map "\C-c\M-r" 'geiser-send-region-and-go)
 
 (define-key geiser-mode-map "\C-c\C-a" 'geiser-autodoc-mode)
+(define-key geiser-mode-map "\C-c\C-d" 'geiser-doc-symbol-at-point)
 
 (define-key geiser-mode-map "\C-c\M-c" 'geiser-compile-definition)
 (define-key geiser-mode-map "\C-c\C-c" 'geiser-compile-definition-and-go)
diff --git a/elisp/geiser-repl.el b/elisp/geiser-repl.el
index 80b637a..671c798 100644
--- a/elisp/geiser-repl.el
+++ b/elisp/geiser-repl.el
@@ -143,6 +143,7 @@ the Geiser REPL buffer."
 (define-key geiser-repl-mode-map "\C-c\C-z" 'run-guile)
 (define-key geiser-repl-mode-map "\C-a" 'geiser-repl--bol)
 (define-key geiser-repl-mode-map "\C-ca" 'geiser-autodoc-mode)
+(define-key geiser-repl-mode-map "\C-cd" 'geiser-doc-symbol-at-point)
 (define-key geiser-repl-mode-map "\C-ck" 'geiser-compile-file)
 (define-key geiser-repl-mode-map "\C-cl" 'geiser-load-file)
 
diff --git a/scheme/guile/geiser/emacs.scm b/scheme/guile/geiser/emacs.scm
index 79da237..1458c73 100644
--- a/scheme/guile/geiser/emacs.scm
+++ b/scheme/guile/geiser/emacs.scm
@@ -29,7 +29,8 @@
                ge:completions
                ge:symbol-location
                ge:compile-file
-               ge:load-file)
+               ge:load-file
+               ge:docstring)
   #:use-module ((geiser introspection)
                 :renamer (symbol-prefix-proc 'ge:))
   #:use-module ((geiser eval)
diff --git a/scheme/guile/geiser/introspection.scm b/scheme/guile/geiser/introspection.scm
index cd48740..14cd021 100644
--- a/scheme/guile/geiser/introspection.scm
+++ b/scheme/guile/geiser/introspection.scm
@@ -28,6 +28,7 @@
   #:export (arguments completions symbol-location docstring)
   #:use-module (system vm program)
   #:use-module (ice-9 session)
+  #:use-module (ice-9 documentation)
   #:use-module (srfi srfi-1))
 
 (define (arguments sym . syms)
@@ -118,4 +119,8 @@
 (define (make-location-from-module-name name)
   (make-location (module-filename name) #f))
 
+
+(define (docstring sym)
+  (object-documentation (symbol->obj sym)))
+
 ;;; introspection.scm ends here