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/* -*- 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
#ifdef VBOX
#define NSID_LENGTH 39
#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 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 char* ToString() const;
#ifdef VBOX
/**
* nsID string encoder. Builds a string in
* {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} format, into a char[NSID_LENGTH]
* buffer provided by the caller (for instance, on the stack).
*/
NS_COM void ToProvidedString(char (&dest)[NSID_LENGTH]) const;
#endif
//@}
};
/*
* 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
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