Improve formatting of variable declarations/assignments.

pkg/analyzer/lib/src/services/formatter_impl.dart

 // Copyright (c) 2013, 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 formatter_impl;
 
 import 'dart:math';
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/src/generated/parser.dart';
@@ skipping 439 matching lines @@
     visit(node.condition);
     token(node.rightParenthesis);
     token(node.semicolon);
   }
 
   visitAssignmentExpression(AssignmentExpression node) {
     visit(node.leftHandSide);
     space();
     token(node.operator);
     allowContinuedLines((){
-      space();
+      levelSpace(SINGLE_SPACE_WEIGHT);
       visit(node.rightHandSide);
     });
   }
 
   @override
   visitAwaitExpression(AwaitExpression node) {
     token(node.awaitKeyword);
     space();
     visit(node.expression);
     // TODO(scheglov) a bug in the spec, there sould not be a ';'
@@ skipping 890 matching lines @@
       token(node.equals);
       var initializer = node.initializer;
       if (initializer is ListLiteral || initializer is MapLiteral) {
         space();
         visit(initializer);
       } else if (initializer is BinaryExpression) {
         allowContinuedLines(() {
           levelSpace(lastSpaceWeight);
           visit(initializer);
         });
-      } else if (initializer is ConditionalExpression) {
-        allowContinuedLines(() {
-          space();
-          visit(initializer);
-        });
       } else {
         allowContinuedLines(() {
-          levelSpace(lastSpaceWeight++);
+          levelSpace(SINGLE_SPACE_WEIGHT);
           visit(initializer);
         });
       }
     }
   }
 
   visitVariableDeclarationList(VariableDeclarationList node) {
     visitMemberMetadata(node.metadata);
     modifier(node.keyword);
     visitNode(node.type, followedBy: space);
@@ skipping 463 matching lines @@
   @override
   visitEnumConstantDeclaration(EnumConstantDeclaration node) {
     // TODO: implement visitEnumConstantDeclaration
   }
 
   @override
   visitEnumDeclaration(EnumDeclaration node) {
     // TODO: implement visitEnumDeclaration
   }
 }