Reformat code to reduce churn

pkg/analyzer/lib/src/generated/source.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 engine.source;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'package:analyzer/file_system/file_system.dart';
@@ skipping 584 matching lines @@
    */
   LocalSourcePredicate _localSourcePredicate = LocalSourcePredicate.NOT_SDK;
 
   /**
    * Initialize a newly created source factory with the given absolute URI [resolvers] and
    * optional [packages] resolution helper.
    */
   SourceFactory(this._resolvers,
       [this._packages, ResourceProvider resourceProvider])
       : _resourceProvider = resourceProvider != null
-          ? resourceProvider
-          : PhysicalResourceProvider.INSTANCE;
+            ? resourceProvider
+            : PhysicalResourceProvider.INSTANCE;
 
   /**
    * Return the [DartSdk] associated with this [SourceFactory], or `null` if there
    * is no such SDK.
    *
    * @return the [DartSdk] associated with this [SourceFactory], or `null` if
    *         there is no such SDK
    */
   DartSdk get dartSdk {
     for (UriResolver resolver in _resolvers) {
@@ skipping 15 matching lines @@
   }
 
   /// A table mapping package names to paths of directories containing
   /// the package (or [null] if there is no registered package URI resolver).
   Map<String, List<Folder>> get packageMap {
     // Start by looking in .packages.
     if (_packages != null) {
       Map<String, List<Folder>> packageMap = <String, List<Folder>>{};
       _packages.asMap().forEach((String name, Uri uri) {
         if (uri.scheme == 'file' || uri.scheme == '' /* unspecified */) {
-          packageMap[name] =
-              <Folder>[_resourceProvider.getFolder(uri.toFilePath())];
+          packageMap[name] = <Folder>[
+            _resourceProvider.getFolder(uri.toFilePath())
+          ];
         }
       });
       return packageMap;
     }
 
     // Default to the PackageMapUriResolver.
-    PackageMapUriResolver resolver = _resolvers.firstWhere(
-        (r) => r is PackageMapUriResolver, orElse: () => null);
+    PackageMapUriResolver resolver = _resolvers
+        .firstWhere((r) => r is PackageMapUriResolver, orElse: () => null);
     return resolver != null ? resolver.packageMap : null;
   }
 
   /**
    * Return a source object representing the given absolute URI, or `null` if the URI is not a
    * valid URI or if it is not an absolute URI.
    *
    * @param absoluteUri the absolute URI to be resolved
    * @return a source object representing the absolute URI
    */
@@ skipping 411 matching lines @@
   Source resolveAbsolute(Uri uri, [Uri actualUri]);
 
   /**
    * Return an absolute URI that represents the given [source], or `null` if a
    * valid URI cannot be computed.
    *
    * The computation should be based solely on [source.fullName].
    */
   Uri restoreAbsolute(Source source) => null;
 }