Remove final references to PackageUriResolver

pkg/analyzer/example/resolver_driver.dart

 #!/usr/bin/env 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.
 
 import 'dart:io';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart' hide File;
 import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/source/package_map_resolver.dart';
+import 'package:analyzer/src/context/builder.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/sdk.dart' show DartSdk;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/source/source_resource.dart';
 
 void main(List<String> args) {
   print('working dir ${new File('.').resolveSymbolicLinksSync()}');
 
   if (args.length < 2 || args.length > 3) {
     print(_usage);
     exit(0);
   }
 
   String packageRoot;
   if (args.length == 3) {
     packageRoot = args[2];
   }
 
   PhysicalResourceProvider resourceProvider = PhysicalResourceProvider.INSTANCE;
   DartSdk sdk = new FolderBasedDartSdk(
       resourceProvider, resourceProvider.getFolder(args[0]));
 
   var resolvers = [
     new DartUriResolver(sdk),
     new ResourceUriResolver(resourceProvider)
   ];
 
   if (packageRoot != null) {
-    var packageDirectory = new JavaFile(packageRoot);
-    resolvers.add(new PackageUriResolver([packageDirectory]));
+    ContextBuilder builder = new ContextBuilder(resourceProvider, null, null);
+    resolvers.add(new PackageMapUriResolver(resourceProvider,
+        builder.convertPackagesToMap(builder.createPackageMap(packageRoot))));

[scheglov, 2016/09/07 19:11:39]

We repeat this code in several clients.
Should we have a helper (e.g. in ContextBuilder) that does this?

[Brian Wilkerson, 2016/09/07 20:03:03]

Eventually clients should be able to use an even higher level API in
ContextBuilder, so I'm not sure it's worth adding something that should only be
used temporarily. I could be persuaded otherwise, though.

   }
 
   AnalysisContext context = AnalysisEngine.instance.createAnalysisContext()
     ..sourceFactory = new SourceFactory(resolvers);
 
   Source source = new FileSource(resourceProvider.getFile(args[1]));
   ChangeSet changeSet = new ChangeSet()..addedSource(source);
   context.applyChanges(changeSet);
   LibraryElement libElement = context.computeLibraryElement(source);
   print("libElement: $libElement");
@@ skipping 20 matching lines @@
           var fullName =
               element.library.definingCompilationUnit.source.fullName;
           lines.add("  from $fullName");
         }
       }
     }
     print(lines.join('\n'));
     return super.visitNode(node);
   }
 }