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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/CSSPropertyAPITextIndent.h"
#include "core/css/CSSValueList.h"
#include "core/css/parser/CSSParserContext.h"
#include "core/css/parser/CSSPropertyParserHelpers.h"
#include "platform/RuntimeEnabledFeatures.h"
namespace blink {
const CSSValue* CSSPropertyAPITextIndent::parseSingleValue(
CSSParserTokenRange& range,
const CSSParserContext* context) {
// [ <length> | <percentage> ] && hanging? && each-line?
// Keywords only allowed when css3Text is enabled.
CSSValueList* list = CSSValueList::createSpaceSeparated();
bool hasLengthOrPercentage = false;
bool hasEachLine = false;
bool hasHanging = false;
do {
if (!hasLengthOrPercentage) {
if (CSSValue* textIndent =
CSSPropertyParserHelpers::consumeLengthOrPercent(
range, context->mode(), ValueRangeAll,
CSSPropertyParserHelpers::UnitlessQuirk::Allow)) {
list->append(*textIndent);
hasLengthOrPercentage = true;
continue;
}
}
if (RuntimeEnabledFeatures::css3TextEnabled()) {
CSSValueID id = range.peek().id();
if (!hasEachLine && id == CSSValueEachLine) {
list->append(*CSSPropertyParserHelpers::consumeIdent(range));
hasEachLine = true;
continue;
}
if (!hasHanging && id == CSSValueHanging) {
list->append(*CSSPropertyParserHelpers::consumeIdent(range));
hasHanging = true;
continue;
}
}
return nullptr;
} while (!range.atEnd());
if (!hasLengthOrPercentage)
return nullptr;
return list;
}
} // namespace blink
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