Eliminate switches that are not on const ints or strings (as required in spec 0.09).

samples/ui_lib/layout/GridLayout.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Implements a grid-based layout system based on:
  * [http://dev.w3.org/csswg/css3-grid-align/]
  *
  * This layout is designed to support animations and work on browsers that
  * don't support grid natively. As such, we implement it on top of absolute
@@ skipping 438 matching lines @@
       //   grid-col-align is the horizontal alignment
       //   grid-row-align is the vertical alignment
       xPos = childLayout.columnAlign.align(xPos, item.currentWidth);
       yPos = childLayout.rowAlign.align(yPos, item.currentHeight);
 
       item.setBounds(xPos.start, yPos.start, xPos.length, yPos.length);
     }
   }
 
   num _getGridContentSize() {
-    switch (_dimension) {
-      case Dimension.WIDTH:
-        return _gridWidth;
-      case Dimension.HEIGHT:
-        return _gridHeight;
+    if (_dimension == Dimension.WIDTH) {
+      return _gridWidth;
+    } else if (_dimension == Dimension.HEIGHT) {
+      return _gridHeight;
     }
   }
 
   _GridLocation _getTrackLocationX(GridLayoutParams childLayout) {
     int start = childLayout.column - 1;
     int end = start + childLayout.columnSpan - 1;
 
     start = _columnTracks[start].start;
     end = _columnTracks[end].end;
 
@@ skipping 10 matching lines @@
     return new _GridLocation(start, end - start);
   }
 
   /** Gets the tracks that this item crosses. */
   // TODO(jmesserly): might be better to return an iterable
   List<GridTrack> _getTracks(ViewLayout item) {
     GridLayoutParams childLayout = item.layoutParams;
 
     int start, span;
     List<GridTrack> tracks;
-    switch (_dimension) {
-      case Dimension.WIDTH:
-        start = childLayout.column - 1;
-        span = childLayout.columnSpan;
-        tracks = _columnTracks;
-        break;
-      case Dimension.HEIGHT:
-        start = childLayout.row - 1;
-        span = childLayout.rowSpan;
-        tracks = _rowTracks;
+    if (_dimension == Dimension.WIDTH) {
+      start = childLayout.column - 1;
+      span = childLayout.columnSpan;
+      tracks = _columnTracks;
+    } else if (_dimension == Dimension.HEIGHT) {
+      start = childLayout.row - 1;
+      span = childLayout.rowSpan;
+      tracks = _rowTracks;
     }
 
     assert(start >= 0 && span >= 1);
 
     final result = new List<GridTrack>(span);
     for (int i = 0; i < span; i++) {
       result[i] = tracks[start + i];
     }
     return result;
   }
 
   int _getSpanCount(ViewLayout item) {
     GridLayoutParams childLayout = item.layoutParams;
     return (_dimension == Dimension.WIDTH ?
         childLayout.columnSpan : childLayout.rowSpan);
   }
 }