[CSS Grid Layout] Add support to place items using named grid lines

Source/core/css/resolver/StyleBuilderConverter.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * 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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 86 matching lines @@
 
     if (angle <= 45.0f || angle > 315.0f)
         return GO_0DEG;
     if (angle > 45.0f && angle <= 135.0f)
         return GO_90DEG;
     if (angle > 135.0f && angle <= 225.0f)
         return GO_180DEG;
     return GO_270DEG;
 }
 
-
 GridPosition StyleBuilderConverter::convertGridPosition(StyleResolverState&, CSSValue* value)
 {
     // We accept the specification's grammar:
     // 'auto' | [ <integer> || <string> ] | [ span && [ <integer> || string ] ] | <ident>
 
     GridPosition position;
 
     if (value->isPrimitiveValue()) {
         CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
         // We translate <ident> to <string> during parsing as it
@@ skipping 85 matching lines @@
         ++currentNamedGridLine;
         trackSizes.append(convertGridTrackSize(state, currValue));
     }
 
     // The parser should have rejected any <track-list> without any <track-size> as
     // this is not conformant to the syntax.
     ASSERT(!trackSizes.isEmpty());
     return true;
 }
 
+void StyleBuilderConverter::createImplicitNamedGridLinesFromGridArea(const NamedGridAreaMap& namedGridAreas, NamedGridLinesMap& namedGridLines, GridTrackSizingDirection direction)
+{
+    NamedGridAreaMap::const_iterator end = namedGridAreas.end();
+    for (NamedGridAreaMap::const_iterator it = namedGridAreas.begin(); it != end; ++it) {
+        GridSpan areaSpan = direction == ForRows ? it->value.rows : it->value.columns;
+        {
+            NamedGridLinesMap::AddResult startResult = namedGridLines.add(it->key + "-start", Vector<size_t>());
+            startResult.storedValue->value.append(areaSpan.resolvedInitialPosition.toInt());
+            std::sort(startResult.storedValue->value.begin(), startResult.storedValue->value.end());
+        }
+        {
+            NamedGridLinesMap::AddResult endResult = namedGridLines.add(it->key + "-end", Vector<size_t>());
+            endResult.storedValue->value.append(areaSpan.resolvedFinalPosition.toInt() + 1);
+            std::sort(endResult.storedValue->value.begin(), endResult.storedValue->value.end());
+        }
+    }
+}
+
 Length StyleBuilderConverter::convertLength(StyleResolverState& state, CSSValue* value)
 {
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
     Length result = primitiveValue->convertToLength<FixedConversion | PercentConversion>(state.cssToLengthConversionData());
     result.setQuirk(primitiveValue->isQuirkValue());
     return result;
 }
 
 Length StyleBuilderConverter::convertLengthOrAuto(StyleResolverState& state, CSSValue* value)
 {
@@ skipping 209 matching lines @@
 {
     CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
     if (primitiveValue->getValueID()) {
         float multiplier = convertLineWidth<float>(state, value);
         return CSSPrimitiveValue::create(multiplier / 48, CSSPrimitiveValue::CSS_EMS)->computeLength<float>(state.cssToLengthConversionData());
     }
     return primitiveValue->computeLength<float>(state.cssToLengthConversionData());
 }
 
 } // namespace WebCore