/*
* Copyright (c) 2013, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.eclipse.org/legal/epl-v10.html
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.dart.engine.services.refactoring;
import com.google.dart.engine.ast.Expression;
import com.google.dart.engine.services.status.RefactoringStatus;
/**
* {@link Refactoring} to extract {@link Expression} into separate local variable declaration.
*/
public interface ExtractLocalRefactoring extends Refactoring {
/**
* Validates the name for new local variable.
*/
RefactoringStatus checkLocalName(String newName);
/**
* @return proposed variable names (may be empty, but not null). The first proposal should be used
* as "best guess" (if it exists).
*/
String[] guessNames();
/**
* @return <code>true</code> if there are several occurrences of the selected expression.
*/
boolean hasSeveralOccurrences();
/**
* Sets the name for new local variable.
*/
void setLocalName(String localName);
/**
* Specifies if all occurrences of the selected expression should be replaced.
*/
void setReplaceAllOccurrences(boolean replaceAllOccurrences);
}