Implement 'grid-template' parsing

Source/core/rendering/style/GridCoordinate.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * 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
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef GridCoordinate_h
 #define GridCoordinate_h
 
+#include "wtf/HashMap.h"
 #include "wtf/PassOwnPtr.h"
+#include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 // A span in a single direction (either rows or columns). Note that |initialPositionIndex|
 // and |finalPositionIndex| are grid areas' indexes, NOT grid lines'. Iterating over the
 // span should include both |initialPositionIndex| and |finalPositionIndex| to be correct.
 struct GridSpan {
     static PassOwnPtr<GridSpan> create(size_t initialPosition, size_t finalPosition)
     {
         return adoptPtr(new GridSpan(initialPosition, finalPosition));
     }
 
     GridSpan(size_t initialPosition, size_t finalPosition)
         : initialPositionIndex(initialPosition)
         , finalPositionIndex(finalPosition)
     {
         ASSERT(initialPositionIndex <= finalPositionIndex);
     }
 
+    bool operator==(const GridSpan& o) const
+    {
+        return initialPositionIndex == o.initialPositionIndex && finalPositionIndex == o.finalPositionIndex;
+    }
+
     size_t initialPositionIndex;
     size_t finalPositionIndex;
 };
 
 // This represents a grid area that spans in both rows' and columns' direction.
 struct GridCoordinate {
     // HashMap requires a default constuctor.
     GridCoordinate()
         : columns(0, 0)
         , rows(0, 0)
     {
     }
 
     GridCoordinate(const GridSpan& r, const GridSpan& c)
         : columns(c)
         , rows(r)
     {
     }
 
+    bool operator==(const GridCoordinate& o) const
+    {
+        return columns == o.columns && rows == o.rows;
+    }
+
+    bool operator!=(const GridCoordinate& o) const
+    {
+        return !(*this == o);
+    }
+
     GridSpan columns;
     GridSpan rows;
 };
 
+typedef HashMap<String, GridCoordinate> NamedGridAreaMap;
+
 } // namespace WebCore
 
 #endif // GridCoordinate_h