mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 06:35:42 +00:00
142 lines
3.4 KiB
C++
142 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#ifndef nsHashtable_h__
|
|
#define nsHashtable_h__
|
|
|
|
#include "plhash.h"
|
|
#include "nsCom.h"
|
|
|
|
class NS_COM nsHashKey {
|
|
protected:
|
|
nsHashKey(void);
|
|
public:
|
|
virtual ~nsHashKey(void);
|
|
virtual PRUint32 HashValue(void) const = 0;
|
|
virtual PRBool Equals(const nsHashKey *aKey) const = 0;
|
|
virtual nsHashKey *Clone(void) const = 0;
|
|
};
|
|
|
|
// Enumerator callback function. Use
|
|
|
|
typedef PRBool (*nsHashtableEnumFunc)(nsHashKey *aKey, void *aData, void* closure);
|
|
|
|
class NS_COM nsHashtable {
|
|
private:
|
|
// members
|
|
PLHashTable *hashtable;
|
|
|
|
public:
|
|
nsHashtable(PRUint32 aSize = 256);
|
|
~nsHashtable();
|
|
|
|
PRInt32 Count(void) { return hashtable->nentries; }
|
|
void *Put(nsHashKey *aKey, void *aData);
|
|
void *Get(nsHashKey *aKey);
|
|
void *Remove(nsHashKey *aKey);
|
|
nsHashtable *Clone();
|
|
void Enumerate(nsHashtableEnumFunc aEnumFunc, void* closure = NULL);
|
|
void Reset();
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// nsISupportsKey: Where keys are nsISupports objects that get refcounted.
|
|
|
|
#include "nsISupports.h"
|
|
|
|
class nsISupportsKey : public nsHashKey {
|
|
private:
|
|
nsISupports* mKey;
|
|
|
|
public:
|
|
nsISupportsKey(nsISupports* key) {
|
|
mKey = key;
|
|
NS_IF_ADDREF(mKey);
|
|
}
|
|
|
|
~nsISupportsKey(void) {
|
|
NS_IF_RELEASE(mKey);
|
|
}
|
|
|
|
PRUint32 HashValue(void) const {
|
|
return (PRUint32)mKey;
|
|
}
|
|
|
|
PRBool Equals(const nsHashKey *aKey) const {
|
|
return (mKey == ((nsISupportsKey *) aKey)->mKey);
|
|
}
|
|
|
|
nsHashKey *Clone(void) const {
|
|
return new nsISupportsKey(mKey);
|
|
}
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// nsVoidKey: Where keys are void* objects that don't get refcounted.
|
|
|
|
class nsVoidKey : public nsHashKey {
|
|
private:
|
|
const void* mKey;
|
|
|
|
public:
|
|
nsVoidKey(const void* key) {
|
|
mKey = key;
|
|
}
|
|
|
|
PRUint32 HashValue(void) const {
|
|
return (PRUint32)mKey;
|
|
}
|
|
|
|
PRBool Equals(const nsHashKey *aKey) const {
|
|
return (mKey == ((const nsVoidKey *) aKey)->mKey);
|
|
}
|
|
|
|
nsHashKey *Clone(void) const {
|
|
return new nsVoidKey(mKey);
|
|
}
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// nsIDKey: Where keys are nsIDs (e.g. nsIID, nsCID).
|
|
|
|
#include "nsID.h"
|
|
|
|
class nsIDKey : public nsHashKey {
|
|
private:
|
|
nsID mID;
|
|
|
|
public:
|
|
nsIDKey(const nsID &aID) {
|
|
mID = aID;
|
|
}
|
|
|
|
PRUint32 HashValue(void) const {
|
|
return mID.m0;
|
|
}
|
|
|
|
PRBool Equals(const nsHashKey *aKey) const {
|
|
return (mID.Equals(((const nsIDKey *) aKey)->mID));
|
|
}
|
|
|
|
nsHashKey *Clone(void) const {
|
|
return new nsIDKey(mID);
|
|
}
|
|
};
|
|
|
|
#endif
|