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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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53
layout/style/RuleNodeCacheConditions.cpp Normal file
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=78: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* an object that stores the result of determining whether a style struct that
* was computed can be cached in the rule tree, and if so, what the cache
* key is
*/
#include "RuleNodeCacheConditions.h"
#include "nsStyleContext.h"
#include "WritingModes.h"
using namespace mozilla;
bool
RuleNodeCacheConditions::Matches(nsStyleContext* aStyleContext) const
{
MOZ_ASSERT(Cacheable());
if ((mBits & eHaveFontSize) &&
mFontSize != aStyleContext->StyleFont()->mFont.size) {
return false;
}
if ((mBits & eHaveWritingMode) &&
(GetWritingMode() != WritingMode(aStyleContext).GetBits())) {
return false;
}
return true;
}
#ifdef DEBUG
void
RuleNodeCacheConditions::List() const
{
printf("{ ");
bool first = true;
if (mBits & eHaveFontSize) {
printf("FontSize(%d)", mFontSize);
first = false;
}
if (mBits & eHaveWritingMode) {
if (!first) {
printf(", ");
}
printf("WritingMode(0x%x)", GetWritingMode());
}
printf(" }");
}
#endif