Move file refactoring implementation.

pkg/analysis_server/lib/src/services/refactoring/refactoring.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 services.refactoring;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart' show
     RefactoringMethodParameter, SourceChange;
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:analysis_server/src/services/refactoring/extract_local.dart';
 import 'package:analysis_server/src/services/refactoring/extract_method.dart';
 import 'package:analysis_server/src/services/refactoring/inline_local.dart';
 import 'package:analysis_server/src/services/refactoring/inline_method.dart';
+import 'package:analysis_server/src/services/refactoring/move_file.dart';
 import 'package:analysis_server/src/services/refactoring/rename_class_member.dart';
 import 'package:analysis_server/src/services/refactoring/rename_constructor.dart';
 import 'package:analysis_server/src/services/refactoring/rename_import.dart';
 import 'package:analysis_server/src/services/refactoring/rename_label.dart';
 import 'package:analysis_server/src/services/refactoring/rename_library.dart';
 import 'package:analysis_server/src/services/refactoring/rename_local.dart';
 import 'package:analysis_server/src/services/refactoring/rename_unit_member.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/source.dart';
 
 
 /**
  * [Refactoring] to extract an expression into a local variable declaration.
  */
 abstract class ExtractLocalRefactoring implements Refactoring {
   /**
    * Returns a new [ExtractLocalRefactoring] instance.
    */
   factory ExtractLocalRefactoring(CompilationUnit unit, int selectionOffset,
@@ skipping 205 matching lines @@
   bool get isDeclaration;
 
   /**
    * The name of the method (or function) being inlined.
    */
   String get methodName;
 }
 
 
 /**
+ * [Refactoring] to move/rename a file.
+ */
+abstract class MoveFileRefactoring implements Refactoring {
+  /**
+   * Returns a new [MoveFileRefactoring] instance.
+   */
+  factory MoveFileRefactoring(SearchEngine searchEngine,
+      AnalysisContext context, Source source) {
+    return new MoveFileRefactoringImpl(searchEngine, context, source);
+  }
+
+  /**
+   * The new file path to which the given file is being moved.
+   */
+  void set newFile(String newName);
+}
+
+
+/**
  * Abstract interface for all refactorings.
  */
 abstract class Refactoring {
   /**
    * The ids of source edits that are not known to be valid.
    *
    * An edit is not known to be valid if there was insufficient type information
    * for the server to be able to determine whether or not the code needs to be
    * modified, such as when a member is being renamed and there is a reference
    * to a member from an unknown type. This field will be omitted if the change
@@ skipping 96 matching lines @@
    * Validates that the [newName] is a valid identifier and is appropriate for
    * the type of the [Element] being renamed.
    *
    * It does not perform all the checks (such as checking for conflicts with any
    * existing names in any of the scopes containing the current name), as many
    * of these checkes require search engine. Use [checkFinalConditions] for this
    * level of checking.
    */
   RefactoringStatus checkNewName();
 }