Convert resource providers to use FileSource

pkg/analyzer/lib/file_system/physical_file_system.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 analyzer.file_system.physical_file_system;
 
 import 'dart:async';
 import 'dart:core' hide Resource;
 import 'dart:io' as io;
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/source_io.dart';
+import 'package:analyzer/src/source/source_resource.dart';
 import 'package:analyzer/src/util/absolute_path.dart';
 import 'package:isolate/isolate_runner.dart';
 import 'package:path/path.dart';
 import 'package:watcher/watcher.dart';
 
 /**
  * Return modification times for every file path in [paths].
  *
  * If a path is `null`, the modification time is also `null`.
  *
@@ skipping 54 matching lines @@
   }
 
   @override
   Folder getFolder(String path) {
     path = normalize(path);
     return new _PhysicalFolder(new io.Directory(path));
   }
 
   @override
   Future<List<int>> getModificationTimes(List<Source> sources) async {
-    List<String> paths = sources
-        .map((source) => source is FileBasedSource ? source.fullName : null)
-        .toList();
+    List<String> paths = sources.map((source) => source.fullName).toList();
     IsolateRunner runner = await pathsToTimesIsolateProvider.get();
     return runner.run(_pathsToTimes, paths);
   }
 
   @override
   Resource getResource(String path) {
     if (io.FileSystemEntity.isDirectorySync(path)) {
       return getFolder(path);
     } else {
       return getFile(path);
@@ skipping 32 matching lines @@
     try {
       io.File file = _entry as io.File;
       return file.lastModifiedSync().millisecondsSinceEpoch;
     } on io.FileSystemException catch (exception) {
       throw new FileSystemException(exception.path, exception.message);
     }
   }
 
   @override
   Source createSource([Uri uri]) {
-    io.File file = _entry as io.File;
-    JavaFile javaFile = new JavaFile(file.absolute.path);
-    if (uri == null) {
-      uri = javaFile.toURI();
-    }
-    return new FileBasedSource(javaFile, uri);
+    return new FileSource(this, uri ?? pathContext.toUri(path));
   }
 
   @override
   bool isOrContains(String path) {
     return path == this.path;
   }
 
   @override
   List<int> readAsBytesSync() {
     try {
@@ skipping 133 matching lines @@
     String parentPath = absolutePathContext.dirname(path);
     if (parentPath == path) {
       return null;
     }
     return new _PhysicalFolder(new io.Directory(parentPath));
   }
 
   @override
   String get path => _entry.absolute.path;
 
+  /**
+   * Return the path context used by this resource provider.
+   */
+  Context get pathContext => io.Platform.isWindows ? windows : posix;
+
   @override
   String get shortName => absolutePathContext.basename(path);
 
   @override
   bool operator ==(other) {
     if (runtimeType != other.runtimeType) {
       return false;
     }
     return path == other.path;
   }
@@ skipping 33 matching lines @@
           timer.cancel();
         }
       });
       return completer.future;
     }
     _isSpawning = true;
     _runner = await IsolateRunner.spawn();
     return _runner;
   }
 }