Source/WebCore/css/typedom/CSSStyleValue.cpp

/*
 * Copyright (C) 2019 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:
 *
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 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
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 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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#include "config.h"
#include "CSSStyleValue.h"

#if ENABLE(CSS_TYPED_OM)

#include "CSSParser.h"
#include "CSSPropertyParser.h"
#include "CSSStyleValueFactory.h"
#include "CSSUnitValue.h"
#include "CSSValueList.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/text/StringView.h>

namespace WebCore {

WTF_MAKE_ISO_ALLOCATED_IMPL(CSSStyleValue);

ExceptionOr<Ref<CSSStyleValue>> CSSStyleValue::parse(const String& property, const String& cssText)
{
    constexpr bool parseMultiple = false;
    auto parseResult = CSSStyleValueFactory::parseStyleValue(property, cssText, parseMultiple);
    if (parseResult.hasException())
        return parseResult.releaseException();
    
    auto returnValue = parseResult.releaseReturnValue();
    
    // Returned vector should not be empty. If parsing failed, an exception should be returned.
    if (returnValue.isEmpty())
        return Exception { SyntaxError, makeString(cssText, " cannot be parsed as a ", property) };

    return WTFMove(returnValue.at(0));
}

ExceptionOr<Vector<Ref<CSSStyleValue>>> CSSStyleValue::parseAll(const String& property, const String& cssText)
{
    constexpr bool parseMultiple = true;
    return CSSStyleValueFactory::parseStyleValue(property, cssText, parseMultiple);
}

Ref<CSSStyleValue> CSSStyleValue::create(RefPtr<CSSValue>&& cssValue, String&& property)
{
    return adoptRef(*new CSSStyleValue(WTFMove(cssValue), WTFMove(property)));
}

Ref<CSSStyleValue> CSSStyleValue::create()
{
    return adoptRef(*new CSSStyleValue());
}

CSSStyleValue::CSSStyleValue(RefPtr<CSSValue>&& cssValue, String&& property)
    : m_customPropertyName(WTFMove(property))
    , m_propertyValue(WTFMove(cssValue))
{
}


String CSSStyleValue::toString() const
{
    if (!m_propertyValue)
        return emptyString();
    
    return m_propertyValue->cssText();
}

} // namespace WebCore

#endif