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/*
* Copyright (C) 2018-2020 Apple Inc. All rights 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#pragma once
#include "CSSParserMode.h"
#include "StyleRuleType.h"
#include "TextEncoding.h"
#include <wtf/HashFunctions.h>
#include <wtf/Optional.h>
#include <wtf/URL.h>
#include <wtf/URLHash.h>
#include <wtf/text/StringHash.h>
namespace WebCore {
class Document;
struct CSSParserContext {
WTF_MAKE_FAST_ALLOCATED;
public:
CSSParserContext(CSSParserMode, const URL& baseURL = URL());
WEBCORE_EXPORT CSSParserContext(const Document&, const URL& baseURL = URL(), const String& charset = emptyString());
URL baseURL;
String charset;
CSSParserMode mode { HTMLStandardMode };
Optional<StyleRuleType> enclosingRuleType;
bool isHTMLDocument { false };
#if ENABLE(TEXT_AUTOSIZING)
bool textAutosizingEnabled { false };
#endif
#if ENABLE(OVERFLOW_SCROLLING_TOUCH)
bool legacyOverflowScrollingTouchEnabled { false };
#endif
bool enforcesCSSMIMETypeInNoQuirksMode { true };
bool useLegacyBackgroundSizeShorthandBehavior { false };
bool springTimingFunctionEnabled { false };
bool constantPropertiesEnabled { false };
bool colorFilterEnabled { false };
#if ENABLE(ATTACHMENT_ELEMENT)
bool attachmentEnabled { false };
#endif
bool deferredCSSParserEnabled { false };
bool scrollBehaviorEnabled { false };
// This is only needed to support getMatchedCSSRules.
bool hasDocumentSecurityOrigin { false };
bool useSystemAppearance { false };
URL completeURL(const String& url) const;
bool isContentOpaque { false };
};
bool operator==(const CSSParserContext&, const CSSParserContext&);
inline bool operator!=(const CSSParserContext& a, const CSSParserContext& b) { return !(a == b); }
WEBCORE_EXPORT const CSSParserContext& strictCSSParserContext();
struct CSSParserContextHash {
static unsigned hash(const CSSParserContext& key)
{
unsigned hash = 0;
if (!key.baseURL.isNull())
hash ^= WTF::URLHash::hash(key.baseURL);
if (!key.charset.isEmpty())
hash ^= StringHash::hash(key.charset);
unsigned bits = key.isHTMLDocument << 0
#if ENABLE(TEXT_AUTOSIZING)
& key.textAutosizingEnabled << 1
#endif
#if ENABLE(OVERFLOW_SCROLLING_TOUCH)
& key.legacyOverflowScrollingTouchEnabled << 2
#endif
& key.enforcesCSSMIMETypeInNoQuirksMode << 3
& key.useLegacyBackgroundSizeShorthandBehavior << 4
& key.springTimingFunctionEnabled << 5
& key.constantPropertiesEnabled << 6
& key.colorFilterEnabled << 7
& key.deferredCSSParserEnabled << 8
& key.hasDocumentSecurityOrigin << 9
& key.useSystemAppearance << 10
#if ENABLE(ATTACHMENT_ELEMENT)
& key.attachmentEnabled << 11
#endif
& key.scrollBehaviorEnabled << 12
& key.mode << 13; // Keep this last.
hash ^= WTF::intHash(bits);
return hash;
}
static bool equal(const CSSParserContext& a, const CSSParserContext& b)
{
return a == b;
}
static const bool safeToCompareToEmptyOrDeleted = false;
};
} // namespace WebCore
namespace WTF {
template<> struct HashTraits<WebCore::CSSParserContext> : GenericHashTraits<WebCore::CSSParserContext> {
static void constructDeletedValue(WebCore::CSSParserContext& slot) { new (NotNull, &slot.baseURL) URL(WTF::HashTableDeletedValue); }
static bool isDeletedValue(const WebCore::CSSParserContext& value) { return value.baseURL.isHashTableDeletedValue(); }
static WebCore::CSSParserContext emptyValue() { return WebCore::CSSParserContext(WebCore::HTMLStandardMode); }
};
template<> struct DefaultHash<WebCore::CSSParserContext> {
typedef WebCore::CSSParserContextHash Hash;
};
} // namespace WTF