[css-grid] Implement grid gutters

Source/core/css/parser/CSSPropertyParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 1242 matching lines @@
         break;
 
     case CSSPropertyGridColumnEnd:
     case CSSPropertyGridColumnStart:
     case CSSPropertyGridRowEnd:
     case CSSPropertyGridRowStart:
         ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
         parsedValue = parseGridPosition();
         break;
 
+    case CSSPropertyGridColumnGap:
+    case CSSPropertyGridRowGap:
+        ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
+        validPrimitive = validUnit(value, FLength | FNonNeg);
+        break;
+
+    case CSSPropertyGridGap:
+        ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
+        return parseGridGapShorthand(important);
+
     case CSSPropertyGridColumn:
     case CSSPropertyGridRow:
         ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
         return parseGridItemPositionShorthand(propId, important);
 
     case CSSPropertyGridArea:
         ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
         return parseGridAreaShorthand(important);
 
     case CSSPropertyGridTemplateAreas:
@@ skipping 2136 matching lines @@
         addProperty(CSSPropertyGridTemplateColumns,  cssValuePool().createIdentifierValue(CSSValueNone), important);
 
     // [<line-names>? <string> [<track-size> <line-names>]? ]+
     RefPtrWillBeRawPtr<CSSValue> templateAreas = CSSGridTemplateAreasValue::create(gridAreaMap, rowCount, columnCount);
     addProperty(CSSPropertyGridTemplateAreas, templateAreas.release(), important);
     addProperty(CSSPropertyGridTemplateRows, templateRows.release(), important);
 
     return true;
 }
 
+bool CSSPropertyParser::parseGridGapShorthand(bool important)
+{
+    ShorthandScope scope(this, CSSPropertyGridGap);
+    ASSERT(shorthandForProperty(CSSPropertyGridGap).length() == 2);
+
+    CSSParserValue* value = m_valueList->current();
+    if (!value)
+        return false;
+
+    if (value->id == CSSValueNormal) {
+        if (m_valueList->next())
+            return false;
+        addProperty(CSSPropertyGridColumnGap, cssValuePool().createImplicitInitialValue(), important);
+        addProperty(CSSPropertyGridRowGap, cssValuePool().createImplicitInitialValue(), important);
+        return true;
+    }
+
+    if (!validUnit(value, FLength | FNonNeg))
+        return false;
+
+    RefPtrWillBeRawPtr<CSSPrimitiveValue> columnGap = createPrimitiveNumericValue(value);
+
+    value = m_valueList->next();
+    if (!value) {
+        addProperty(CSSPropertyGridColumnGap, columnGap, important);
+        addProperty(CSSPropertyGridRowGap, columnGap, important);
+        return true;
+    }
+
+    if (!validUnit(value, FLength | FNonNeg))
+        return false;
+
+    if (m_valueList->next())
+        return false;
+
+    RefPtrWillBeRawPtr<CSSPrimitiveValue> rowGap = createPrimitiveNumericValue(value);
+
+    addProperty(CSSPropertyGridColumnGap, columnGap, important);
+    addProperty(CSSPropertyGridRowGap, rowGap, important);
+
+    return true;
+}
+
 
 bool CSSPropertyParser::parseGridTemplateShorthand(bool important)
 {
     ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
 
     ShorthandScope scope(this, CSSPropertyGridTemplate);
     ASSERT(gridTemplateShorthand().length() == 3);
 
     // At least "none" must be defined.
     if (!m_valueList->current())
@@ skipping 4714 matching lines @@
         }
     }
 
     if (!list->length())
         return nullptr;
 
     return list.release();
 }
 
 } // namespace blink