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/*
* Copyright (C) 2016-2023 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+Inline.h"
#include "CSSLineBoxContainValue.h"
#include "CSSParserContext.h"
#include "CSSParserTokenRange.h"
#include "CSSPrimitiveValue.h"
#include "CSSPropertyParserConsumer+Ident.h"
#include "CSSPropertyParserConsumer+Number.h"
#include "CSSValueKeywords.h"
#include "CSSValuePair.h"
namespace WebCore {
namespace CSSPropertyParserHelpers {
static RefPtr<CSSValue> consumeTextEdge(CSSParserTokenRange& range)
{
// <text-edge> = [ text | cap | ex | ideographic | ideographic-ink ]
// [ text | alphabetic | ideographic | ideographic-ink ]?
// https://drafts.csswg.org/css-inline-3/#typedef-text-edge
auto firstValue = consumeIdent<CSSValueText, CSSValueCap, CSSValueEx, CSSValueIdeographic, CSSValueIdeographicInk>(range);
if (!firstValue)
return nullptr;
auto secondValue = consumeIdent<CSSValueText, CSSValueAlphabetic, CSSValueIdeographic, CSSValueIdeographicInk>(range);
// https://drafts.csswg.org/css-inline-3/#text-edges
// "If only one value is specified, both edges are assigned that same keyword if possible; else text is assumed as the missing value."
auto shouldSerializeSecondValue = [&]() {
if (!secondValue)
return false;
if (firstValue->valueID() == CSSValueCap || firstValue->valueID() == CSSValueEx)
return secondValue->valueID() != CSSValueText;
return firstValue->valueID() != secondValue->valueID();
}();
if (!shouldSerializeSecondValue)
return firstValue;
return CSSValuePair::create(firstValue.releaseNonNull(), secondValue.releaseNonNull());
}
RefPtr<CSSValue> consumeLineFitEdge(CSSParserTokenRange& range, const CSSParserContext&)
{
// <'line-fit-edge'> = leading | <text-edge>
// https://drafts.csswg.org/css-inline-3/#propdef-line-fit-edge
if (range.peek().id() == CSSValueLeading)
return consumeIdent(range);
return consumeTextEdge(range);
}
RefPtr<CSSValue> consumeTextBoxEdge(CSSParserTokenRange& range, const CSSParserContext&)
{
// <'text-box-edge'> = auto | <text-edge>
// https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge
if (range.peek().id() == CSSValueAuto)
return consumeIdent(range);
return consumeTextEdge(range);
}
RefPtr<CSSValue> consumeWebkitInitialLetter(CSSParserTokenRange& range, const CSSParserContext& context)
{
// Standard says this should be:
//
// <'initial-letter'> = normal | <number [1,∞]> <integer [1,∞]> | <number [1,∞]> && [ drop | raise ]?
// https://drafts.csswg.org/css-inline-3/#sizing-drop-initials
if (auto ident = consumeIdent<CSSValueNormal>(range))
return ident;
auto height = consumeNumber(range, context, ValueRange::NonNegative);
if (!height)
return nullptr;
RefPtr<CSSPrimitiveValue> position;
if (!range.atEnd()) {
position = consumeNumber(range, context, ValueRange::NonNegative);
if (!position || !range.atEnd())
return nullptr;
} else
position = height.copyRef();
return CSSValuePair::create(position.releaseNonNull(), height.releaseNonNull());
}
RefPtr<CSSValue> consumeWebkitLineBoxContain(CSSParserTokenRange& range, const CSSParserContext&)
{
// <'-webkit-line-box-contain'> = none | [ block || inline || font || glyphs || replaced || inline-box || initial-letter ]
// NOTE: This is a non-standard property with no standard equivalent.
if (range.peek().id() == CSSValueNone)
return consumeIdent(range);
OptionSet<LineBoxContain> value;
while (range.peek().type() == IdentToken) {
auto flag = [&]() -> std::optional<LineBoxContain> {
switch (range.peek().id()) {
case CSSValueBlock:
return LineBoxContain::Block;
case CSSValueInline:
return LineBoxContain::Inline;
case CSSValueFont:
return LineBoxContain::Font;
case CSSValueGlyphs:
return LineBoxContain::Glyphs;
case CSSValueReplaced:
return LineBoxContain::Replaced;
case CSSValueInlineBox:
return LineBoxContain::InlineBox;
case CSSValueInitialLetter:
return LineBoxContain::InitialLetter;
default:
return std::nullopt;
}
}();
if (!flag || value.contains(*flag))
return nullptr;
value.add(flag);
range.consumeIncludingWhitespace();
}
if (!value)
return nullptr;
return CSSLineBoxContainValue::create(value);
}
} // namespace CSSPropertyParserHelpers
} // namespace WebCore
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