Implements CSSPropertyAPI for the shape-outside property.

third_party/WebKit/Source/core/css/properties/CSSPropertyAPIShapeOutside.cpp

+// 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/CSSPropertyAPIShapeOutside.h"
+
+#include "core/css/CSSValueList.h"
+#include "core/css/parser/CSSParserContext.h"
+#include "core/css/parser/CSSPropertyParserHelpers.h"
+#include "core/css/properties/CSSPropertyShapeUtils.h"
+
+namespace blink {
+
+using namespace CSSPropertyParserHelpers;
+
+const CSSValue* CSSPropertyAPIShapeOutside::parseSingleValue(
+    CSSParserTokenRange& range,
+    const CSSParserContext* context) {
+  if (CSSValue* imageValue = consumeImageOrNone(range, context))
+    return imageValue;
+  CSSValueList* list = CSSValueList::createSpaceSeparated();
+  if (CSSValue* boxValue = consumeShapeBox(range))
+    list->append(*boxValue);
+  if (CSSValue* shapeValue =
+          CSSPropertyShapeUtils::consumeBasicShape(range, context)) {
+    list->append(*shapeValue);
+    if (list->length() < 2) {
+      if (CSSValue* boxValue = consumeShapeBox(range))
+        list->append(*boxValue);
+    }
+  }
+  if (!list->length())
+    return nullptr;
+  return list;
+}
+
+}  // namespace blink