зеркало из https://github.com/mozilla/pjs.git
104 строки
3.7 KiB
C++
104 строки
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Static Atom classes.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corp.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Alec Flett <alecf@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsStaticAtom_h__
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#define nsStaticAtom_h__
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#include "nsIAtom.h"
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// see http://www.mozilla.org/projects/xpcom/atoms.html to use this stuff
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// class for declaring a static list of atoms, for use with gperf
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// Keep this VERY simple
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// mString: the value of the atom - the policy is that this is only
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// ASCII, in order to avoid unnecessary conversions if
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// someone asks for this in unicode
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// mAtom: a convienience pointer - if you want to store the value of
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// the atom created by this structure somewhere, put its
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// address here
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struct nsStaticAtom {
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const char* mString;
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nsIAtom ** mAtom;
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};
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class nsStaticAtomWrapper : public nsIAtom
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{
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public:
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nsStaticAtomWrapper(const nsStaticAtom* aAtom, PRUint32 aLength) :
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mStaticAtom(aAtom), mLength(aLength)
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{
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MOZ_COUNT_CTOR(nsStaticAtomWrapper);
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}
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~nsStaticAtomWrapper() { // no subclasses -> not virtual
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// this is arena allocated and won't be called except in debug
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// builds. If this function ever does anything non-debug, be sure
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// to get rid of the ifdefs in AtomTableClearEntry!
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MOZ_COUNT_DTOR(nsStaticAtomWrapper);
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}
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NS_IMETHOD QueryInterface(REFNSIID aIID,
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void** aInstancePtr);
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NS_IMETHOD_(nsrefcnt) AddRef(void);
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NS_IMETHOD_(nsrefcnt) Release(void);
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NS_DECL_NSIATOM
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const nsStaticAtom* GetStaticAtom() const {
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return mStaticAtom;
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}
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PRUint32 getLength() const {
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return mLength;
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}
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private:
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const nsStaticAtom* mStaticAtom;
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// The length of the string in the static atom. The static atom
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// (nsStaticAtom) doesn't hold a length, so we keep it here in the
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// wrapper instead.
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PRUint32 mLength;
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};
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// register your lookup function with the atom table. Your function
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// will be called when at atom is not found in the main atom table.
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NS_COM nsresult
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NS_RegisterStaticAtoms(const nsStaticAtom*, PRUint32 aAtomCount);
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#endif
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