abe764d755
git-svn-id: svn://10.0.0.236/branches/MOZILLA_1_8_BRANCH@196201 18797224-902f-48f8-a5cc-f745e15eee43
79 lines
2.8 KiB
C++
79 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim:set ts=2 sw=2 sts=2 et cindent: */
|
|
/* ***** 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 the Metrics extension.
|
|
*
|
|
* The Initial Developer of the Original Code is Google Inc.
|
|
* Portions created by the Initial Developer are Copyright (C) 2006
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Brian Ryner <bryner@brianryner.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either 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 ***** */
|
|
|
|
// This class defines a templatized hash key type for holding raw pointers.
|
|
// Use it like this:
|
|
// nsDataHashtable< nsPtrHashKey<SomeClass>, SomeValueType > mTable;
|
|
//
|
|
// This is identical to nsVoidPtrHashKey with void* replaced by T*.
|
|
|
|
#ifndef nsPtrHashKey_h_
|
|
#define nsPtrHashKey_h_
|
|
|
|
#include "pldhash.h"
|
|
#include "nscore.h"
|
|
|
|
template<class T>
|
|
class nsPtrHashKey : public PLDHashEntryHdr
|
|
{
|
|
public:
|
|
typedef const T *KeyType;
|
|
typedef const T *KeyTypePointer;
|
|
|
|
nsPtrHashKey(const T *key) : mKey(key) {}
|
|
nsPtrHashKey(const nsPtrHashKey<T> &toCopy) : mKey(toCopy.mKey) {}
|
|
~nsPtrHashKey() {}
|
|
|
|
KeyType GetKey() const { return mKey; }
|
|
KeyTypePointer GetKeyPointer() const { return mKey; }
|
|
|
|
PRBool KeyEquals(KeyTypePointer key) const { return key == mKey; }
|
|
|
|
static KeyTypePointer KeyToPointer(KeyType key) { return key; }
|
|
static PLDHashNumber HashKey(KeyTypePointer key)
|
|
{
|
|
return NS_PTR_TO_INT32(key) >> 2;
|
|
}
|
|
enum { ALLOW_MEMMOVE = PR_TRUE };
|
|
|
|
private:
|
|
const T *mKey;
|
|
};
|
|
|
|
#endif // nsPtrHashKey_h_
|