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/*
* Copyright (C) 2016-2021 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,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* 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 "CSSCustomPropertyValue.h"
#include "CSSParserIdioms.h"
#include "CSSTokenizer.h"
namespace WebCore {
Ref<CSSCustomPropertyValue> CSSCustomPropertyValue::createEmpty(const AtomString& name)
{
return adoptRef(*new CSSCustomPropertyValue(name, std::monostate { }));
}
Ref<CSSCustomPropertyValue> CSSCustomPropertyValue::createWithID(const AtomString& name, CSSValueID id)
{
ASSERT(WebCore::isCSSWideKeyword(id) || id == CSSValueInvalid);
return adoptRef(*new CSSCustomPropertyValue(name, { id }));
}
bool CSSCustomPropertyValue::equals(const CSSCustomPropertyValue& other) const
{
if (m_name != other.m_name || m_value.index() != other.m_value.index())
return false;
return WTF::switchOn(m_value, [&](const std::monostate&) {
return true;
}, [&](const Ref<CSSVariableReferenceValue>& value) {
return value.get() == std::get<Ref<CSSVariableReferenceValue>>(other.m_value).get();
}, [&](const CSSValueID& value) {
return value == std::get<CSSValueID>(other.m_value);
}, [&](const Ref<CSSVariableData>& value) {
return value.get() == std::get<Ref<CSSVariableData>>(other.m_value).get();
}, [&](const Length& value) {
return value == std::get<Length>(other.m_value);
}, [&](const Ref<StyleImage>& value) {
return value.get() == std::get<Ref<StyleImage>>(other.m_value).get();
});
}
String CSSCustomPropertyValue::customCSSText() const
{
if (m_stringValue.isNull()) {
WTF::switchOn(m_value, [&](const std::monostate&) {
m_stringValue = emptyString();
}, [&](const Ref<CSSVariableReferenceValue>& value) {
m_stringValue = value->cssText();
}, [&](const CSSValueID& value) {
m_stringValue = getValueName(value);
}, [&](const Ref<CSSVariableData>& value) {
m_stringValue = value->tokenRange().serialize();
}, [&](const Length& value) {
m_stringValue = CSSPrimitiveValue::create(value.value(), CSSUnitType::CSS_PX)->cssText();
}, [&](const Ref<StyleImage>& value) {
m_stringValue = value->cssValue()->cssText();
});
}
return m_stringValue;
}
Vector<CSSParserToken> CSSCustomPropertyValue::tokens() const
{
Vector<CSSParserToken> result;
WTF::switchOn(m_value, [&](const std::monostate&) {
// Do nothing.
}, [&](const Ref<CSSVariableReferenceValue>&) {
ASSERT_NOT_REACHED();
}, [&](const CSSValueID&) {
// Do nothing.
}, [&](const Ref<CSSVariableData>& value) {
result.appendVector(value->tokens());
}, [&](auto&) {
CSSTokenizer tokenizer(customCSSText());
auto tokenizerRange = tokenizer.tokenRange();
while (!tokenizerRange.atEnd())
result.append(tokenizerRange.consume());
});
return result;
}
}
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