From f8fe689a81f906d1b91bb3220acde2a4ecb14c5b Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 05:01:46 +0200 Subject: Adding upstream version 6.0.4-dfsg. Signed-off-by: Daniel Baumann --- src/libs/xpcom18a4/xpcom/ds/nsHashSets.h | 107 +++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 src/libs/xpcom18a4/xpcom/ds/nsHashSets.h (limited to 'src/libs/xpcom18a4/xpcom/ds/nsHashSets.h') diff --git a/src/libs/xpcom18a4/xpcom/ds/nsHashSets.h b/src/libs/xpcom18a4/xpcom/ds/nsHashSets.h new file mode 100644 index 00000000..627a6a06 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/ds/nsHashSets.h @@ -0,0 +1,107 @@ +/* -*- 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. + * + * 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 __nsHashSets_h__ +#define __nsHashSets_h__ + +#include "nsDoubleHashtable.h" + +/* + * HASH SETS + * + * These hash classes describe hashtables that contain keys without values. + * This is useful when you want to store things and then just test for their + * existence later. We have defined standard ones for string, int and void. + * + * nsStringHashSet: nsAString& + * nsCStringHashSet: nsACString& + * nsInt32HashSet: PRInt32 + * nsVoidHashSet: void* + * + * USAGE: + * Put(): put a thing of the given type into the set + * Contains(): whether it contains a thing of the given type + * To use, you just do: (for example) + * + * #include "nsDoubleHashtable.h" + * nsInt32HashSet mySet; + * mySet.Init(1); + * mySet.Put(5); + * if (mySet.Contains(5)) { + * printf("yay\n"); + * } + * + * There is a nice convenient macro for declaring empty map classes: + * DECL_DHASH_SET(CLASSNAME, ENTRY_CLASS, KEY_TYPE) + * - CLASSNAME: the name of the class + * - ENTRY_CLASS: the name of the entry class with the key in it + * - KEY_TYPE: the type of key for Put() and Contains() + * + * DHASH_SET(CLASSNAME, ENTRY_CLASS, KEY_TYPE) is the companion macro + * you must put in the .cpp (implementation) code. + */ + +#define DECL_DHASH_SET(CLASSNAME,ENTRY_CLASS,KEY_TYPE) \ +DECL_DHASH_WRAPPER(CLASSNAME##Super,ENTRY_CLASS,KEY_TYPE) \ +class DHASH_EXPORT CLASSNAME : public CLASSNAME##Super { \ +public: \ + CLASSNAME() : CLASSNAME##Super() { } \ + ~CLASSNAME() { } \ + nsresult Put(const KEY_TYPE aKey) { \ + return AddEntry(aKey) ? NS_OK : NS_ERROR_OUT_OF_MEMORY; \ + } \ + PRBool Contains(const KEY_TYPE aKey) { \ + return GetEntry(aKey) ? PR_TRUE : PR_FALSE; \ + } \ +}; + +#define DHASH_SET(CLASSNAME,ENTRY_CLASS,KEY_TYPE) \ +DHASH_WRAPPER(CLASSNAME##Super,ENTRY_CLASS,KEY_TYPE) + +#undef DHASH_EXPORT +#define DHASH_EXPORT NS_COM + +DECL_DHASH_SET(nsStringHashSet, PLDHashStringEntry, nsAString&) +DECL_DHASH_SET(nsCStringHashSet,PLDHashCStringEntry,nsACString&) +DECL_DHASH_SET(nsInt32HashSet, PLDHashInt32Entry, PRInt32) +DECL_DHASH_SET(nsVoidHashSet, PLDHashVoidEntry, void*) + +#undef DHASH_EXPORT +#define DHASH_EXPORT + + +#endif -- cgit v1.2.3