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/*
* Copyright (C) 2009-2021 Apple Inc. All right reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSCSSRuleList.h"
#include "CSSRule.h"
#include "CSSRuleList.h"
#include "CSSStyleSheet.h"
#include "JSCSSRuleCustom.h"
#include "JSStyleSheetCustom.h"
namespace WebCore {
using namespace JSC;
bool JSCSSRuleListOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, AbstractSlotVisitor& visitor, ASCIILiteral* reason)
{
JSCSSRuleList* jsCSSRuleList = jsCast<JSCSSRuleList*>(handle.slot()->asCell());
if (!jsCSSRuleList->hasCustomProperties())
return false;
if (CSSStyleSheet* styleSheet = jsCSSRuleList->wrapped().styleSheet()) {
if (UNLIKELY(reason))
*reason = "CSSStyleSheet is opaque root"_s;
return containsWebCoreOpaqueRoot(visitor, styleSheet);
}
if (CSSRule* cssRule = jsCSSRuleList->wrapped().item(0)) {
if (UNLIKELY(reason))
*reason = "CSSRule is opaque root"_s;
return containsWebCoreOpaqueRoot(visitor, cssRule);
}
return false;
}
}
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