gecko-dev/xpcom/ds/nsStaticNameTable.h

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/* -*- Mode: C++; tab-width: 2; 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 Communicator client code, released
* March 31, 1998.
*
* 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 ***** */
/* Classes to manage lookup of static names in a table. */
#ifndef nsStaticNameTable_h___
#define nsStaticNameTable_h___
#include "pldhash.h"
/* This class supports case insensitive lookup.
*
* It differs from atom tables:
* - It supports case insensitive lookup.
* - It has minimal footprint by not copying the string table.
* - It does no locking.
* - It returns zero based indexes and const nsCString& as required by its
* callers in the parser.
* - It is not an xpcom interface - meant for fast lookup in static tables.
*
* ***REQUIREMENTS***
* - It *requires* that all entries in the table be lowercase only.
* - It *requires* that the table of strings be in memory that lives at least
* as long as this table object - typically a static string array.
*/
class NS_COM nsStaticCaseInsensitiveNameTable
{
public:
enum { NOT_FOUND = -1 };
PRBool Init(const char* const aNames[], PRInt32 Count);
PRInt32 Lookup(const nsACString& aName);
PRInt32 Lookup(const nsAString& aName);
const nsAFlatCString& GetStringValue(PRInt32 index);
nsStaticCaseInsensitiveNameTable();
~nsStaticCaseInsensitiveNameTable();
private:
nsDependentCString* mNameArray;
PLDHashTable mNameTable;
nsDependentCString mNullStr;
};
#endif /* nsStaticNameTable_h___ */