Tweak formatting rules. Fix #211.

lib/src/multisplit.dart

 // Copyright (c) 2014, 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.
 
 library dart_style.src.multisplit;
 
 import 'chunk.dart';
 
 /// Handles a series of [Chunks] that all either split or don't split together.
 ///
@@ skipping 35 matching lines @@
 ///     The trailing calls are short enough to not split.
 class Multisplit {
   /// The index of the first chunk contained by the multisplit.
   ///
   /// This is used to determine which chunk range needs to be scanned to look
   /// for hard newlines to see if the multisplit gets forced.
   final int startChunk;
 
   /// The [SplitParam] that controls all of the split chunks.
   SplitParam get param => _param;
-  SplitParam _param = new SplitParam();
+  SplitParam _param;
 
   /// `true` if a hard newline has forced this multisplit to be split.
   bool _isSplit = false;
 
   final bool _separable;
 
-  Multisplit(this.startChunk, {bool separable})
-      : _separable = separable != null ? separable : false;
+  Multisplit(this.startChunk, {bool separable, int cost})
+      : _separable = separable != null ? separable : false,
+        _param = new SplitParam(cost);
 
   /// Handles a hard split occurring in the middle of this multisplit.
   ///
   /// If the multisplit is separable, this creates a new param so the previous
   /// split chunks can vary independently of later ones. Otherwise, it just
   /// marks this multisplit as being split.
   ///
   /// Returns a [SplitParam] for existing splits that should be hardened if this
   /// splits a non-separable multisplit for the first time. Otherwise, returns
   /// `null`.
   SplitParam harden() {
     if (_isSplit) return null;
 
     _isSplit = true;
 
     if (_separable) {
-      _param = new SplitParam(param.cost);
+      _param = new SplitParam(_param.cost);
 
       // Previous splits may still remain unsplit.
       return null;
     } else {
       // Any other splits created from this multisplit should be hardened now.
       var oldParam = _param;
       _param = null;
       return oldParam;
     }
   }
 }