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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/css/properties/CSSPropertyAPIPaintOrder.h"
#include "core/css/CSSValueList.h"
#include "core/css/parser/CSSPropertyParserHelpers.h"
namespace blink {
const CSSValue* CSSPropertyAPIPaintOrder::parseSingleValue(
CSSParserTokenRange& range,
const CSSParserContext* context) {
if (range.peek().id() == CSSValueNormal)
return CSSPropertyParserHelpers::consumeIdent(range);
Vector<CSSValueID, 3> paintTypeList;
CSSIdentifierValue* fill = nullptr;
CSSIdentifierValue* stroke = nullptr;
CSSIdentifierValue* markers = nullptr;
do {
CSSValueID id = range.peek().id();
if (id == CSSValueFill && !fill)
fill = CSSPropertyParserHelpers::consumeIdent(range);
else if (id == CSSValueStroke && !stroke)
stroke = CSSPropertyParserHelpers::consumeIdent(range);
else if (id == CSSValueMarkers && !markers)
markers = CSSPropertyParserHelpers::consumeIdent(range);
else
return nullptr;
paintTypeList.push_back(id);
} while (!range.atEnd());
// After parsing we serialize the paint-order list. Since it is not possible
// to pop a last list items from CSSValueList without bigger cost, we create
// the list after parsing.
CSSValueID firstPaintOrderType = paintTypeList.at(0);
CSSValueList* paintOrderList = CSSValueList::createSpaceSeparated();
switch (firstPaintOrderType) {
case CSSValueFill:
case CSSValueStroke:
paintOrderList->append(firstPaintOrderType == CSSValueFill ? *fill
: *stroke);
if (paintTypeList.size() > 1) {
if (paintTypeList.at(1) == CSSValueMarkers)
paintOrderList->append(*markers);
}
break;
case CSSValueMarkers:
paintOrderList->append(*markers);
if (paintTypeList.size() > 1) {
if (paintTypeList.at(1) == CSSValueStroke)
paintOrderList->append(*stroke);
}
break;
default:
NOTREACHED();
}
return paintOrderList;
}
} // namespace blink
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