blob: b8b221bb515d5ac337048c51cacd18050037471b [file] [log] [blame]
/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.corext.refactoring.code;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.filebuffers.FileBuffers;
import org.eclipse.core.filebuffers.ITextFileBuffer;
import org.eclipse.core.filebuffers.LocationKind;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IRegion;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.Block;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.MethodDeclaration;
import org.eclipse.jdt.internal.corext.dom.ASTNodes;
import org.eclipse.jdt.internal.corext.dom.Selection;
import org.eclipse.jdt.internal.corext.dom.SelectionAnalyzer;
import org.eclipse.jdt.internal.corext.refactoring.RefactoringCoreMessages;
import org.eclipse.jdt.internal.corext.util.Messages;
import org.eclipse.jdt.internal.corext.util.Strings;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels;
public class CodeRefactoringUtil {
public static RefactoringStatus checkMethodSyntaxErrors(int selectionStart, int selectionLength, CompilationUnit cuNode, String invalidSelectionMessage){
SelectionAnalyzer analyzer= new SelectionAnalyzer(Selection.createFromStartLength(selectionStart, selectionLength), true);
cuNode.accept(analyzer);
ASTNode coveringNode= analyzer.getLastCoveringNode();
if (! (coveringNode instanceof Block) || ! (coveringNode.getParent() instanceof MethodDeclaration))
return RefactoringStatus.createFatalErrorStatus(invalidSelectionMessage);
if (ASTNodes.getMessages(coveringNode, ASTNodes.NODE_ONLY).length == 0)
return RefactoringStatus.createFatalErrorStatus(invalidSelectionMessage);
MethodDeclaration methodDecl= (MethodDeclaration)coveringNode.getParent();
String message= Messages.format(RefactoringCoreMessages.CodeRefactoringUtil_error_message, BasicElementLabels.getJavaElementName(methodDecl.getName().getIdentifier()));
return RefactoringStatus.createFatalErrorStatus(message);
}
public static int getIndentationLevel(ASTNode node, ICompilationUnit unit) throws CoreException {
IPath fullPath= unit.getCorrespondingResource().getFullPath();
try{
FileBuffers.getTextFileBufferManager().connect(fullPath, LocationKind.IFILE, new NullProgressMonitor());
ITextFileBuffer buffer= FileBuffers.getTextFileBufferManager().getTextFileBuffer(fullPath, LocationKind.IFILE);
try {
IRegion region= buffer.getDocument().getLineInformationOfOffset(node.getStartPosition());
return Strings.computeIndentUnits(buffer.getDocument().get(region.getOffset(), region.getLength()), unit.getJavaProject());
} catch (BadLocationException exception) {
JavaPlugin.log(exception);
}
return 0;
} finally {
FileBuffers.getTextFileBufferManager().disconnect(fullPath, LocationKind.IFILE, new NullProgressMonitor());
}
}
private CodeRefactoringUtil() {}
}