;;; semantic-scm.el --- Semantic details for Scheme (guile)

;;; Copyright (C) 2001, 2002, 2003, 2004 Eric M. Ludlam

;; Author: Eric M. Ludlam <zappo@gnu.org>
;; X-RCS: $Id: semantic-scm.el,v 1.2 2007-12-03 07:04:57 michaels Exp $

;; 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 2, or (at your option)
;; any later version.

;; This software 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; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.

;;; Commentary:
;;
;; Use the Semantic Bovinator for Scheme (guile)

(require 'semantic)
(require 'semantic-scm-by)
(require 'backquote)

(eval-when-compile
  (require 'document)
  (require 'semantic-format))

;;; Code:

(defcustom semantic-default-scheme-path '("/usr/share/guile/")
  "Default set of include paths for scheme (guile) code.
Used by `semantic-inc' to define an include path.  This should
probably do some sort of search to see what is actually on the local
machine."
  :group 'scheme
  :type '(repeat (string :tag "Path")))

(define-mode-local-override semantic-format-tag-prototype scheme-mode (tag)
  "Return a prototype for the Emacs Lisp nonterminal TAG."
  (let* ((tok (semantic-tag-class tag))
	 (args (semantic-tag-components tag))
	 )
    (if (eq tok 'function)
	(concat (semantic-tag-name tag) " ("
		(mapconcat (lambda (a) a) args " ")
		")")
      (semantic-format-tag-prototype-default tag))))

(define-mode-local-override semantic-documentation-for-tag scheme-mode (tag &optional nosnarf)
  "Return the documentation string for TAG.
Optional argument NOSNARF is ignored."
  (let ((d (semantic-tag-docstring tag)))
    (if (and d (> (length d) 0) (= (aref d 0) ?*))
	(substring d 1)
      d)))

(define-mode-local-override semantic-insert-foreign-tag scheme-mode (tag tagfile)
  "Insert TAG from TAGFILE at point.
Attempts a simple prototype for calling or using TAG."
  (cond ((eq (semantic-tag-class tag) 'function)
	 (insert "(" (semantic-tag-name tag) " )")
	 (forward-char -1))
	(t
	 (insert (semantic-tag-name tag)))))

(define-lex semantic-scheme-lexer
  "A simple lexical analyzer that handles simple buffers.
This lexer ignores comments and whitespace, and will return
syntax as specified by the syntax table."
  semantic-lex-ignore-whitespace
  semantic-lex-ignore-newline
  semantic-lex-symbol-or-keyword
  semantic-lex-charquote
  semantic-lex-paren-or-list
  semantic-lex-close-paren
  semantic-lex-string
  semantic-lex-ignore-comments
  semantic-lex-punctuation
  semantic-lex-default-action)

;;;###autoload
(defun semantic-default-scheme-setup ()
  "Setup hook function for Emacs Lisp files and Semantic."
  (semantic-scm-by--install-parser)
  (setq semantic-symbol->name-assoc-list '( (variable . "Variables")
                                            ;;(type     . "Types")
                                            (function . "Functions")
                                            (include  . "Loads")
                                            (package  . "DefineModule"))
        imenu-create-index-function 'semantic-create-imenu-index
        semantic-dependency-include-path semantic-default-scheme-path
        imenu-create-index-function 'semantic-create-imenu-index
        document-comment-start ";;"
        document-comment-line-prefix ";;"
        document-comment-end "\n"
        )
  (setq semantic-lex-analyzer #'semantic-scheme-lexer)
  )

; ;;;###autoload
(add-hook 'scheme-mode-hook 'semantic-default-scheme-setup)

(provide 'semantic-scm)

;;; semantic-scm.el ends here
