File: CSSPropertyParserConsumer%2BPage.cpp

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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+Page.h"

#include "CSSCalcSymbolTable.h"
#include "CSSParserContext.h"
#include "CSSParserTokenRange.h"
#include "CSSPrimitiveValue.h"
#include "CSSPropertyParserConsumer+Ident.h"
#include "CSSPropertyParserConsumer+Length.h"
#include "CSSPropertyParsing.h"
#include "CSSValueKeywords.h"
#include "CSSValuePair.h"

namespace WebCore {
namespace CSSPropertyParserHelpers {

RefPtr<CSSValue> consumeSize(CSSParserTokenRange& range, const CSSParserContext& context)
{
    // <'size'> = <length [0,∞]>{1,2} | auto | [ <page-size> || [ portrait | landscape ] ]
    // https://drafts.csswg.org/css-page/#descdef-page-size

    if (consumeIdentRaw<CSSValueAuto>(range))
        return CSSPrimitiveValue::create(CSSValueAuto);

    if (auto width = consumeLength(range, context, ValueRange::NonNegative)) {
        auto height = consumeLength(range, context, ValueRange::NonNegative);
        if (!height)
            return width;
        return CSSValuePair::create(width.releaseNonNull(), height.releaseNonNull());
    }

    auto pageSize = CSSPropertyParsing::consumePageSize(range);
    auto orientation = consumeIdent<CSSValuePortrait, CSSValueLandscape>(range);
    if (!pageSize)
        pageSize = CSSPropertyParsing::consumePageSize(range);
    if (!orientation && !pageSize)
        return nullptr;
    if (pageSize && !orientation)
        return pageSize;
    if (!pageSize)
        return orientation;
    return CSSValuePair::create(pageSize.releaseNonNull(), orientation.releaseNonNull());
}

} // namespace CSSPropertyParserHelpers
} // namespace WebCore