From f215e02bf85f68d3a6106c2a1f4f7f063f819064 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:17:27 +0200 Subject: Adding upstream version 7.0.14-dfsg. Signed-off-by: Daniel Baumann --- src/libs/xpcom18a4/xpcom/ds/nsEnumeratorUtils.cpp | 253 ++++++++++++++++++++++ 1 file changed, 253 insertions(+) create mode 100644 src/libs/xpcom18a4/xpcom/ds/nsEnumeratorUtils.cpp (limited to 'src/libs/xpcom18a4/xpcom/ds/nsEnumeratorUtils.cpp') diff --git a/src/libs/xpcom18a4/xpcom/ds/nsEnumeratorUtils.cpp b/src/libs/xpcom18a4/xpcom/ds/nsEnumeratorUtils.cpp new file mode 100644 index 00000000..e91f68e5 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/ds/nsEnumeratorUtils.cpp @@ -0,0 +1,253 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* ***** 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.org 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 ***** */ + +#include "nsEnumeratorUtils.h" + + +nsArrayEnumerator::nsArrayEnumerator(nsISupportsArray* aValueArray) + : mValueArray(aValueArray), + mIndex(0) +{ + NS_IF_ADDREF(mValueArray); +} + +nsArrayEnumerator::~nsArrayEnumerator(void) +{ + NS_IF_RELEASE(mValueArray); +} + +NS_IMPL_ISUPPORTS1(nsArrayEnumerator, nsISimpleEnumerator) + +NS_IMETHODIMP +nsArrayEnumerator::HasMoreElements(PRBool* aResult) +{ + NS_PRECONDITION(aResult != 0, "null ptr"); + if (! aResult) + return NS_ERROR_NULL_POINTER; + + if (!mValueArray) { + *aResult = PR_FALSE; + return NS_OK; + } + + PRUint32 cnt; + nsresult rv = mValueArray->Count(&cnt); + if (NS_FAILED(rv)) return rv; + *aResult = (mIndex < (PRInt32) cnt); + return NS_OK; +} + +NS_IMETHODIMP +nsArrayEnumerator::GetNext(nsISupports** aResult) +{ + NS_PRECONDITION(aResult != 0, "null ptr"); + if (! aResult) + return NS_ERROR_NULL_POINTER; + + if (!mValueArray) { + *aResult = nsnull; + return NS_OK; + } + + PRUint32 cnt; + nsresult rv = mValueArray->Count(&cnt); + if (NS_FAILED(rv)) return rv; + if (mIndex >= (PRInt32) cnt) + return NS_ERROR_UNEXPECTED; + + *aResult = mValueArray->ElementAt(mIndex++); + return NS_OK; +} + +extern NS_COM nsresult +NS_NewArrayEnumerator(nsISimpleEnumerator* *result, + nsISupportsArray* array) +{ + nsArrayEnumerator* enumer = new nsArrayEnumerator(array); + if (enumer == nsnull) + return NS_ERROR_OUT_OF_MEMORY; + *result = enumer; + NS_ADDREF(*result); + return NS_OK; +} + +//////////////////////////////////////////////////////////////////////////////// + +nsSingletonEnumerator::nsSingletonEnumerator(nsISupports* aValue) + : mValue(aValue) +{ + NS_IF_ADDREF(mValue); + mConsumed = (mValue ? PR_FALSE : PR_TRUE); +} + +nsSingletonEnumerator::~nsSingletonEnumerator() +{ + NS_IF_RELEASE(mValue); +} + +NS_IMPL_ISUPPORTS1(nsSingletonEnumerator, nsISimpleEnumerator) + +NS_IMETHODIMP +nsSingletonEnumerator::HasMoreElements(PRBool* aResult) +{ + NS_PRECONDITION(aResult != 0, "null ptr"); + if (! aResult) + return NS_ERROR_NULL_POINTER; + + *aResult = !mConsumed; + return NS_OK; +} + + +NS_IMETHODIMP +nsSingletonEnumerator::GetNext(nsISupports** aResult) +{ + NS_PRECONDITION(aResult != 0, "null ptr"); + if (! aResult) + return NS_ERROR_NULL_POINTER; + + if (mConsumed) + return NS_ERROR_UNEXPECTED; + + mConsumed = PR_TRUE; + + *aResult = mValue; + NS_ADDREF(*aResult); + return NS_OK; +} + +extern "C" NS_COM nsresult +NS_NewSingletonEnumerator(nsISimpleEnumerator* *result, + nsISupports* singleton) +{ + nsSingletonEnumerator* enumer = new nsSingletonEnumerator(singleton); + if (enumer == nsnull) + return NS_ERROR_OUT_OF_MEMORY; + *result = enumer; + NS_ADDREF(*result); + return NS_OK; +} + +//////////////////////////////////////////////////////////////////////////////// + +nsUnionEnumerator::nsUnionEnumerator(nsISimpleEnumerator* firstEnumerator, + nsISimpleEnumerator* secondEnumerator) + : mFirstEnumerator(firstEnumerator), + mSecondEnumerator(secondEnumerator), + mConsumed(PR_FALSE), mAtSecond(PR_FALSE) +{ +} + +nsUnionEnumerator::~nsUnionEnumerator() +{ +} + +NS_IMPL_ISUPPORTS1(nsUnionEnumerator, nsISimpleEnumerator) + +NS_IMETHODIMP +nsUnionEnumerator::HasMoreElements(PRBool* aResult) +{ + NS_PRECONDITION(aResult != 0, "null ptr"); + if (! aResult) + return NS_ERROR_NULL_POINTER; + + nsresult rv; + + if (mConsumed) { + *aResult = PR_FALSE; + return NS_OK; + } + + if (! mAtSecond) { + rv = mFirstEnumerator->HasMoreElements(aResult); + if (NS_FAILED(rv)) return rv; + + if (*aResult) + return NS_OK; + + mAtSecond = PR_TRUE; + } + + rv = mSecondEnumerator->HasMoreElements(aResult); + if (NS_FAILED(rv)) return rv; + + if (*aResult) + return NS_OK; + + *aResult = PR_FALSE; + mConsumed = PR_TRUE; + return NS_OK; +} + +NS_IMETHODIMP +nsUnionEnumerator::GetNext(nsISupports** aResult) +{ + NS_PRECONDITION(aResult != 0, "null ptr"); + if (! aResult) + return NS_ERROR_NULL_POINTER; + + if (mConsumed) + return NS_ERROR_UNEXPECTED; + + if (! mAtSecond) + return mFirstEnumerator->GetNext(aResult); + + return mSecondEnumerator->GetNext(aResult); +} + +extern "C" NS_COM nsresult +NS_NewUnionEnumerator(nsISimpleEnumerator* *result, + nsISimpleEnumerator* firstEnumerator, + nsISimpleEnumerator* secondEnumerator) +{ + *result = nsnull; + if (! firstEnumerator) { + *result = secondEnumerator; + } else if (! secondEnumerator) { + *result = firstEnumerator; + } else { + nsUnionEnumerator* enumer = new nsUnionEnumerator(firstEnumerator, secondEnumerator); + if (enumer == nsnull) + return NS_ERROR_OUT_OF_MEMORY; + *result = enumer; + } + NS_ADDREF(*result); + return NS_OK; +} + + +//////////////////////////////////////////////////////////////////////////////// -- cgit v1.2.3