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/*
* Copyright (C) 2024 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. ``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.
*/
#pragma once
#include "CSSParserContext.h"
#include "CSSProperty.h"
#include "CSSPropertyParserConsumer+MetaConsumerDefinitions.h"
#include "CSSPropertyParserState.h"
namespace WebCore {
namespace CSSPropertyParserHelpers {
struct LengthValidator {
static constexpr std::optional<CSS::LengthUnit> validate(CSSUnitType unitType, CSS::PropertyParserState& state, CSSPropertyParserOptions options)
{
if (unitType == CSSUnitType::CSS_QUIRKY_EM && !isUASheetBehavior(options.overrideParserMode.value_or(state.context.mode)))
return std::nullopt;
return CSS::UnitTraits<CSS::LengthUnit>::validate(unitType);
}
template<auto R, typename V> static bool isValid(CSS::LengthRaw<R, V> raw, CSSPropertyParserOptions)
{
// Values other than 0 and +/-∞ are not supported for <length> numeric ranges currently.
return isValidNonCanonicalizableDimensionValue(raw);
}
static bool shouldAcceptUnitlessValue(double value, CSS::PropertyParserState& state, CSSPropertyParserOptions options)
{
if (!value && options.unitlessZeroLength == UnitlessZeroQuirk::Allow)
return true;
auto mode = options.overrideParserMode.value_or(state.context.mode);
if (isUnitlessValueParsingForcedForMode(mode))
return true;
return mode == HTMLQuirksMode && CSSProperty::acceptsQuirkyLength(state.currentProperty);
}
};
template<auto R, typename V> struct ConsumerDefinition<CSS::Length<R, V>> {
using FunctionToken = FunctionConsumerForCalcValues<CSS::Length<R, V>>;
using DimensionToken = DimensionConsumer<CSS::Length<R, V>, LengthValidator>;
using NumberToken = NumberConsumerForUnitlessValues<CSS::Length<R, V>, LengthValidator, CSS::LengthUnit::Px>;
};
} // namespace CSSPropertyParserHelpers
} // namespace WebCore
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