зеркало из https://github.com/mozilla/gecko-dev.git
91 строка
3.4 KiB
C++
91 строка
3.4 KiB
C++
/* -*- 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):
|
|
* Original Author: David W. Hyatt (hyatt@netscape.com)
|
|
*
|
|
* 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 "nsRuleData.h"
|
|
#include "nsCSSProps.h"
|
|
#include "nsPresArena.h"
|
|
|
|
inline size_t
|
|
nsRuleData::GetPoisonOffset()
|
|
{
|
|
// Fill in mValueOffsets such that mValueStorage + mValueOffsets[i]
|
|
// will yield the frame poison value for all uninitialized value
|
|
// offsets.
|
|
MOZ_STATIC_ASSERT(sizeof(PRUword) == sizeof(size_t),
|
|
"expect PRUword and size_t to be the same size");
|
|
MOZ_STATIC_ASSERT(PRUword(-1) > PRUword(0),
|
|
"expect PRUword to be unsigned");
|
|
MOZ_STATIC_ASSERT(size_t(-1) > size_t(0),
|
|
"expect size_t to be unsigned");
|
|
PRUword framePoisonValue = nsPresArena::GetPoisonValue();
|
|
return size_t(framePoisonValue - PRUword(mValueStorage)) /
|
|
sizeof(nsCSSValue);
|
|
}
|
|
|
|
nsRuleData::nsRuleData(PRUint32 aSIDs, nsCSSValue* aValueStorage,
|
|
nsPresContext* aContext, nsStyleContext* aStyleContext)
|
|
: mSIDs(aSIDs),
|
|
mCanStoreInRuleTree(true),
|
|
mPresContext(aContext),
|
|
mStyleContext(aStyleContext),
|
|
mPostResolveCallback(nsnull),
|
|
mValueStorage(aValueStorage)
|
|
{
|
|
#ifndef MOZ_VALGRIND
|
|
size_t framePoisonOffset = GetPoisonOffset();
|
|
for (size_t i = 0; i < nsStyleStructID_Length; ++i) {
|
|
mValueOffsets[i] = framePoisonOffset;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
nsRuleData::~nsRuleData()
|
|
{
|
|
#ifndef MOZ_VALGRIND
|
|
// assert nothing in mSIDs has poison value
|
|
size_t framePoisonOffset = GetPoisonOffset();
|
|
for (size_t i = 0; i < nsStyleStructID_Length; ++i) {
|
|
NS_ABORT_IF_FALSE(!(mSIDs & (1 << i)) ||
|
|
mValueOffsets[i] != framePoisonOffset,
|
|
"value in SIDs was left with poison offset");
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|