Removed fixed dependencies

packages/dart_style/lib/src/formatter_options.dart

Index: packages/dart_style/lib/src/formatter_options.dart
diff --git a/packages/dart_style/lib/src/formatter_options.dart b/packages/dart_style/lib/src/formatter_options.dart
index 69a46ffac44d8a951aaa142f68c4c37d3cef5060..989977191677bc66cb98106d953423e083b16bf3 100644
--- a/packages/dart_style/lib/src/formatter_options.dart
+++ b/packages/dart_style/lib/src/formatter_options.dart
@@ -32,17 +32,17 @@ class FormatterOptions {
 abstract class OutputReporter {
   /// Prints only the names of files whose contents are different from their
   /// formatted version.
-  static final dryRun = new _DryRunReporter();
+  static final OutputReporter dryRun = new _DryRunReporter();
 
   /// Prints the formatted results of each file to stdout.
-  static final print = new _PrintReporter();
+  static final OutputReporter print = new _PrintReporter();
 
   /// Prints the formatted result and selection info of each file to stdout as
   /// a JSON map.
-  static final printJson = new _PrintJsonReporter();
+  static final OutputReporter printJson = new _PrintJsonReporter();
 
   /// Overwrites each file with its formatted result.
-  static final overwrite = new _OverwriteReporter();
+  static final OutputReporter overwrite = new _OverwriteReporter();
 
   /// Describe the directory whose contents are about to be processed.
   void showDirectory(String path) {}
@@ -116,18 +116,48 @@ class _PrintJsonReporter extends OutputReporter {
 class _OverwriteReporter extends _PrintReporter {
   void afterFile(File file, String label, SourceCode output, {bool changed}) {
     if (changed) {
-      file.writeAsStringSync(output.text);
-      print("Formatted $label");
+      try {
+        file.writeAsStringSync(output.text);
+        print("Formatted $label");
+      } on FileSystemException catch (err) {
+        stderr.writeln("Could not overwrite $label: "
+            "${err.osError.message} (error code ${err.osError.errorCode})");
+      }
     } else {
       print("Unchanged $label");
     }
   }
 }
 
-/// A decorating reporter that reports how long it took for format each file.
-class ProfileReporter implements OutputReporter {
+/// Base clase for a reporter that decorates an inner reporter.
+abstract class _ReporterDecorator implements OutputReporter {
   final OutputReporter _inner;
 
+  _ReporterDecorator(this._inner);
+
+  void showDirectory(String path) {
+    _inner.showDirectory(path);
+  }
+
+  void showSkippedLink(String path) {
+    _inner.showSkippedLink(path);
+  }
+
+  void showHiddenPath(String path) {
+    _inner.showHiddenPath(path);
+  }
+
+  void beforeFile(File file, String label) {
+    _inner.beforeFile(file, label);
+  }
+
+  void afterFile(File file, String label, SourceCode output, {bool changed}) {
+    _inner.afterFile(file, label, output, changed: changed);
+  }
+}
+
+/// A decorating reporter that reports how long it took for format each file.
+class ProfileReporter extends _ReporterDecorator {
   /// The files that have been started but have not completed yet.
   ///
   /// Maps a file label to the time that it started being formatted.
@@ -140,7 +170,7 @@ class ProfileReporter implements OutputReporter {
   /// tracking.
   int _elided = 0;
 
-  ProfileReporter(this._inner);
+  ProfileReporter(OutputReporter inner) : super(inner);
 
   /// Show the times for the slowest files to format.
   void showProfile() {
@@ -160,25 +190,9 @@ class ProfileReporter implements OutputReporter {
     }
   }
 
-  /// Describe the directory whose contents are about to be processed.
-  void showDirectory(String path) {
-    _inner.showDirectory(path);
-  }
-
-  /// Describe the symlink at [path] that wasn't followed.
-  void showSkippedLink(String path) {
-    _inner.showSkippedLink(path);
-  }
-
-  /// Describe the hidden [path] that wasn't processed.
-  void showHiddenPath(String path) {
-    _inner.showHiddenPath(path);
-  }
-
   /// Called when [file] is about to be formatted.
   void beforeFile(File file, String label) {
-    _inner.beforeFile(file, label);
-
+    super.beforeFile(file, label);
     _ongoing[label] = new DateTime.now();
   }
 
@@ -194,6 +208,21 @@ class ProfileReporter implements OutputReporter {
       _elided++;
     }
 
-    _inner.afterFile(file, label, output, changed: changed);
+    super.afterFile(file, label, output, changed: changed);
+  }
+}
+
+/// A decorating reporter that sets the exit code to 1 if any changes are made.
+class SetExitReporter extends _ReporterDecorator {
+  SetExitReporter(OutputReporter inner) : super(inner);
+
+  /// Describe the processed file at [path] whose formatted result is [output].
+  ///
+  /// If the contents of the file are the same as the formatted output,
+  /// [changed] will be false.
+  void afterFile(File file, String label, SourceCode output, {bool changed}) {
+    if (changed) exitCode = 1;
+
+    super.afterFile(file, label, output, changed: changed);
   }
 }