nsID.h
上传用户:goldcmy89
上传日期:2017-12-03
资源大小:2246k
文件大小:4k
- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef nsID_h__
- #define nsID_h__
- #include <string.h>
- #ifndef nscore_h___
- #include "nscore.h"
- #endif
- /**
- * A "unique identifier". This is modeled after OSF DCE UUIDs.
- * @status FROZEN
- */
- struct nsID {
- /**
- * @name Indentifier values
- */
- //@{
- PRUint32 m0;
- PRUint16 m1;
- PRUint16 m2;
- PRUint8 m3[8];
- //@}
- /**
- * @name Methods
- */
- //@{
- /**
- * Equivalency method. Compares this nsID with another.
- * @return <b>PR_TRUE</b> if they are the same, <b>PR_FALSE</b> if not.
- */
- inline PRBool Equals(const nsID& other) const {
- // One would think that this could be done faster with a really
- // efficient implementation of memcmp(), but evidently no
- // memcmp()'s out there are better than this code.
- //
- // See bug http://bugzilla.mozilla.org/show_bug.cgi?id=164580 for
- // details.
- return (PRBool)
- ((((PRUint32*) &m0)[0] == ((PRUint32*) &other.m0)[0]) &&
- (((PRUint32*) &m0)[1] == ((PRUint32*) &other.m0)[1]) &&
- (((PRUint32*) &m0)[2] == ((PRUint32*) &other.m0)[2]) &&
- (((PRUint32*) &m0)[3] == ((PRUint32*) &other.m0)[3]));
- }
- /**
- * nsID Parsing method. Turns a {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
- * string into an nsID
- */
- NS_COM_GLUE PRBool Parse(const char *aIDStr);
- /**
- * nsID string encoder. Returns an allocated string in
- * {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} format. Caller should free string.
- */
- NS_COM_GLUE char* ToString() const;
- //@}
- };
- /*
- * Class IDs
- */
- typedef nsID nsCID;
- // Define an CID
- #define NS_DEFINE_CID(_name, _cidspec)
- const nsCID _name = _cidspec
- #define REFNSCID const nsCID&
- /**
- * An "interface id" which can be used to uniquely identify a given
- * interface.
- */
- typedef nsID nsIID;
- /**
- * A macro shorthand for <tt>const nsIID&<tt>
- */
- #define REFNSIID const nsIID&
- /**
- * Define an IID
- * obsolete - do not use this macro
- */
-
- #define NS_DEFINE_IID(_name, _iidspec)
- const nsIID _name = _iidspec
- /**
- * A macro to build the static const IID accessor method
- */
- #define NS_DEFINE_STATIC_IID_ACCESSOR(the_iid)
- static const nsIID& GetIID() {static const nsIID iid = the_iid; return iid;}
- /**
- * A macro to build the static const CID accessor method
- */
- #define NS_DEFINE_STATIC_CID_ACCESSOR(the_cid)
- static const nsID& GetCID() {static const nsID cid = the_cid; return cid;}
- #endif