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/*
* Copyright (C) 2024 Apple Inc. All rights reserved.
* Copyright (C) 2024 Samuel Weinig <sam@webkit.org>
*
* 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,
* 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 "CSSPropertyParserConsumer+Ident.h"
#include "CSSParserIdioms.h"
#include "CSSValuePool.h"
namespace WebCore {
namespace CSSPropertyParserHelpers {
std::optional<CSSValueID> consumeIdentRaw(CSSParserTokenRange& range)
{
if (range.peek().type() != IdentToken)
return std::nullopt;
return range.consumeIncludingWhitespace().id();
}
RefPtr<CSSPrimitiveValue> consumeIdent(CSSParserTokenRange& range)
{
if (auto result = consumeIdentRaw(range))
return CSSPrimitiveValue::create(*result);
return nullptr;
}
static std::optional<CSSValueID> consumeIdentRangeRaw(CSSParserTokenRange& range, CSSValueID lower, CSSValueID upper)
{
if (range.peek().id() < lower || range.peek().id() > upper)
return std::nullopt;
return consumeIdentRaw(range);
}
RefPtr<CSSPrimitiveValue> consumeIdentRange(CSSParserTokenRange& range, CSSValueID lower, CSSValueID upper)
{
auto value = consumeIdentRangeRaw(range, lower, upper);
if (!value)
return nullptr;
return CSSPrimitiveValue::create(*value);
}
// MARK: <custom-ident>
// https://drafts.csswg.org/css-values/#custom-idents
String consumeCustomIdentRaw(CSSParserTokenRange& range, bool shouldLowercase)
{
if (range.peek().type() != IdentToken || !isValidCustomIdentifier(range.peek().id()))
return String();
auto identifier = range.consumeIncludingWhitespace().value();
return shouldLowercase ? identifier.convertToASCIILowercase() : identifier.toString();
}
RefPtr<CSSPrimitiveValue> consumeCustomIdent(CSSParserTokenRange& range, bool shouldLowercase)
{
auto identifier = consumeCustomIdentRaw(range, shouldLowercase);
if (identifier.isNull())
return nullptr;
return CSSPrimitiveValue::createCustomIdent(WTFMove(identifier));
}
// MARK: <dashed-ident>
// https://drafts.csswg.org/css-values/#dashed-idents
String consumeDashedIdentRaw(CSSParserTokenRange& range, bool shouldLowercase)
{
auto rangeCopy = range;
auto identifier = consumeCustomIdentRaw(range, shouldLowercase);
if (!identifier.startsWith("--"_s)) {
range = rangeCopy;
return { };
}
return identifier;
}
RefPtr<CSSPrimitiveValue> consumeDashedIdent(CSSParserTokenRange& range, bool shouldLowercase)
{
auto identifier = consumeDashedIdentRaw(range, shouldLowercase);
if (identifier.isNull())
return nullptr;
return CSSPrimitiveValue::createCustomIdent(WTFMove(identifier));
}
} // namespace CSSPropertyParserHelpers
} // namespace WebCore
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