CEDET (development tools) package merged.

* cedet/*.el:
* cedet/ede/*.el:
* cedet/semantic/*.el:
* cedet/srecode/*.el: New files.

lisp/cedet/semantic/db-mode.el

@@ -0,0 +1,221 @@
+;;; semantic/db-mode.el --- Semanticdb Minor Mode
+
+;; Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+
+;; Author: Eric M. Ludlam <eric@siege-engine.com>
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; Major mode for managing Semantic Databases automatically.
+
+;;; Code:
+
+(require 'semantic/db)
+
+(declare-function semantic-lex-spp-set-dynamic-table "semantic/lex-spp")
+
+;;; Start/Stop database use
+;;
+(defvar semanticdb-hooks
+  '((semanticdb-semantic-init-hook-fcn semantic-init-db-hook)
+    (semanticdb-synchronize-table semantic-after-toplevel-cache-change-hook)
+    (semanticdb-partial-synchronize-table semantic-after-partial-cache-change-hook)
+    (semanticdb-revert-hook before-revert-hook)
+    (semanticdb-kill-hook kill-buffer-hook)
+    (semanticdb-kill-hook change-major-mode-hook) ;; Not really a kill, but we need the same effect.
+    (semanticdb-kill-emacs-hook kill-emacs-hook)
+    (semanticdb-save-all-db-idle auto-save-hook)
+    )
+  "List of hooks and values to add/remove when configuring semanticdb.")
+
+;;; SEMANTICDB-MODE
+;;
+;;;###autoload
+(defun semanticdb-minor-mode-p ()
+  "Return non-nil if `semanticdb-minor-mode' is active."
+  (member (car (car semanticdb-hooks))
+	  (symbol-value (car (cdr (car semanticdb-hooks))))))
+
+;;;###autoload
+(define-minor-mode global-semanticdb-minor-mode
+  "Toggle Semantic DB mode.
+With ARG, turn Semantic DB mode on if ARG is positive, off otherwise.
+
+In Semantic DB mode, Semantic parsers store results in a
+database, which can be saved for future Emacs sessions."
+  :global t
+  :group 'semantic
+  (if global-semanticdb-minor-mode
+      ;; Enable
+      (dolist (elt semanticdb-hooks)
+	(add-hook (cadr elt) (car elt)))
+    ;; Disable
+    (dolist (elt semanticdb-hooks)
+      (add-hook (cadr elt) (car elt)))))
+
+(defvaralias 'semanticdb-mode-hook 'global-semanticdb-minor-mode-hook)
+(defvaralias 'semanticdb-global-mode 'global-semanticdb-minor-mode)
+(semantic-varalias-obsolete 'semanticdb-mode-hooks
+			    'global-semanticdb-minor-mode-hook)
+
+
+(defun semanticdb-toggle-global-mode ()
+  "Toggle use of the Semantic Database feature.
+Update the environment of Semantic enabled buffers accordingly."
+  (interactive)
+  (if (semanticdb-minor-mode-p)
+      ;; Save databases before disabling semanticdb.
+      (semanticdb-save-all-db))
+  ;; Toggle semanticdb minor mode.
+  (global-semanticdb-minor-mode))
+
+;;; Hook Functions:
+;;
+;; Functions used in hooks to keep SemanticDB operating.
+;;
+(defun semanticdb-semantic-init-hook-fcn ()
+  "Function saved in `semantic-init-db-hook'.
+Sets up the semanticdb environment."
+  ;; Only initialize semanticdb if we have a file name.
+  ;; There is no reason to cache a tag table if there is no
+  ;; way to load it back in later.
+  (when (buffer-file-name)
+    (let* ((ans (semanticdb-create-table-for-file (buffer-file-name)))
+	   (cdb (car ans))
+	   (ctbl (cdr ans))
+	   )
+      ;; Get the current DB for this directory
+      (setq semanticdb-current-database cdb)
+      ;; We set the major mode because we know what it is.
+      (oset ctbl major-mode major-mode)
+      ;; Local state
+      (setq semanticdb-current-table ctbl)
+      ;; Try to swap in saved tags
+      (if (or (not (slot-boundp ctbl 'tags)) (not (oref ctbl tags))
+	      (/= (or (oref ctbl pointmax) 0) (point-max))
+	      )
+	  (semantic-clear-toplevel-cache)
+	;; Unmatched syntax
+	(condition-case nil
+	    (semantic-set-unmatched-syntax-cache
+	     (oref ctbl unmatched-syntax))
+	  (unbound-slot
+	   ;; Old version of the semanticdb table can miss the unmatched
+	   ;; syntax slot.  If so, just clear the unmatched syntax cache.
+	   (semantic-clear-unmatched-syntax-cache)
+	   ;; Make sure it has a value.
+	   (oset ctbl unmatched-syntax nil)
+	   ))
+	;; Keep lexical tables up to date.  Don't load
+	;; semantic-spp if it isn't needed.
+	(let ((lt (oref ctbl lexical-table)))
+	  (when lt
+	    (require 'semantic/lex-spp)
+	    (semantic-lex-spp-set-dynamic-table lt)))
+	;; Set the main tag cache.
+	;; This must happen after setting up buffer local variables
+	;; since this will turn around and re-save those variables.
+	(semantic--set-buffer-cache (oref ctbl tags))
+	;; Don't need it to be dirty.  Set dirty due to hooks from above.
+	(oset ctbl dirty nil) ;; Special case here.
+	(oset ctbl buffer (current-buffer))
+	;; Bind into the buffer.
+	(semantic--tag-link-cache-to-buffer)
+	)
+      )))
+
+(defun semanticdb-revert-hook ()
+  "Hook run before a revert buffer.
+We can't track incremental changes due to a revert, so just clear the cache.
+This will prevent the next batch of hooks from wasting time parsing things
+that don't need to be parsed."
+  (if (and (semantic-active-p)
+	   semantic--buffer-cache
+	   semanticdb-current-table)
+      (semantic-clear-toplevel-cache)))
+
+(defun semanticdb-kill-hook ()
+  "Function run when a buffer is killed.
+If there is a semantic cache, slurp out the overlays, and store
+it in our database.  If that buffer has no cache, ignore it, we'll
+handle it later if need be."
+  (when (and (semantic-active-p)
+	     semantic--buffer-cache
+	     semanticdb-current-table)
+
+    ;; Try to get a fast update.
+    (semantic-fetch-tags-fast)
+
+    ;; If the buffer is in a bad state, don't save anything...
+    (if (semantic-parse-tree-needs-rebuild-p)
+	;; If this is the case, don't save anything.
+	(progn
+	  (semantic-clear-toplevel-cache)
+	  (oset semanticdb-current-table pointmax 0)
+	  (oset semanticdb-current-table fsize 0)
+	  (oset semanticdb-current-table lastmodtime nil)
+	  )
+      ;; We have a clean buffer, save it off.
+      (condition-case nil
+	  (progn
+	    (semantic--tag-unlink-cache-from-buffer)
+	    ;; Set pointmax only if we had some success in the unlink.
+	    (oset semanticdb-current-table pointmax (point-max))
+	    (let ((fattr (file-attributes
+			  (semanticdb-full-filename
+			   semanticdb-current-table))))
+	      (oset semanticdb-current-table fsize (nth 7 fattr))
+	      (oset semanticdb-current-table lastmodtime (nth 5 fattr))
+	      (oset semanticdb-current-table buffer nil)
+	      ))
+	;; If this messes up, just clear the system
+	(error
+	 (semantic-clear-toplevel-cache)
+	 (message "semanticdb: Failed to deoverlay tag cache.")))
+      )
+    ))
+
+(defun semanticdb-kill-emacs-hook ()
+  "Function called when Emacs is killed.
+Save all the databases."
+  (semanticdb-save-all-db))
+
+;;; SYNCHRONIZATION HOOKS
+;;
+(defun semanticdb-synchronize-table (new-table)
+  "Function run after parsing.
+Argument NEW-TABLE is the new table of tags."
+  (when semanticdb-current-table
+    (semanticdb-synchronize semanticdb-current-table new-table)))
+
+(defun semanticdb-partial-synchronize-table (new-table)
+  "Function run after parsing.
+Argument NEW-TABLE is the new table of tags."
+  (when semanticdb-current-table
+    (semanticdb-partial-synchronize semanticdb-current-table new-table)))
+
+
+(provide 'semantic/db-mode)
+
+;; Local variables:
+;; generated-autoload-file: "loaddefs.el"
+;; generated-autoload-feature: semantic/loaddefs
+;; generated-autoload-load-name: "semantic/db-mode"
+;; End:
+
+;;; semantic/db-mode.el ends here