| /******************************************************************************* |
| * Copyright (c) 2005, 2011 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.fix; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.text.edits.TextEditGroup; |
| |
| import org.eclipse.jdt.core.dom.CompilationUnit; |
| import org.eclipse.jdt.core.dom.ForStatement; |
| import org.eclipse.jdt.core.dom.SingleVariableDeclaration; |
| import org.eclipse.jdt.core.dom.Statement; |
| import org.eclipse.jdt.core.dom.VariableDeclarationFragment; |
| |
| import org.eclipse.jdt.internal.corext.dom.GenericVisitor; |
| import org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer; |
| import org.eclipse.jdt.internal.corext.fix.CompilationUnitRewriteOperationsFix.CompilationUnitRewriteOperation; |
| import org.eclipse.jdt.internal.corext.refactoring.structure.CompilationUnitRewrite; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| |
| public abstract class ConvertLoopOperation extends CompilationUnitRewriteOperation { |
| |
| protected static final String FOR_LOOP_ELEMENT_IDENTIFIER= "element"; //$NON-NLS-1$ |
| |
| protected static final IStatus ERROR_STATUS= new Status(IStatus.ERROR, JavaPlugin.getPluginId(), ""); //$NON-NLS-1$ |
| |
| private final ForStatement fStatement; |
| private ConvertLoopOperation fOperation; |
| private final String[] fUsedNames; |
| |
| public ConvertLoopOperation(ForStatement statement, String[] usedNames) { |
| fStatement= statement; |
| fUsedNames= usedNames; |
| } |
| |
| public void setBodyConverter(ConvertLoopOperation operation) { |
| fOperation= operation; |
| } |
| |
| public abstract String getIntroducedVariableName(); |
| |
| public abstract IStatus satisfiesPreconditions(); |
| |
| protected abstract Statement convert(CompilationUnitRewrite cuRewrite, TextEditGroup group, LinkedProposalModel positionGroups) throws CoreException; |
| |
| protected ForStatement getForStatement() { |
| return fStatement; |
| } |
| |
| protected Statement getBody(CompilationUnitRewrite cuRewrite, TextEditGroup group, LinkedProposalModel positionGroups) throws CoreException { |
| if (fOperation != null) { |
| return fOperation.convert(cuRewrite, group, positionGroups); |
| } else { |
| return (Statement)cuRewrite.getASTRewrite().createMoveTarget(getForStatement().getBody()); |
| } |
| } |
| |
| protected String[] getUsedVariableNames() { |
| final List<String> results= new ArrayList<>(); |
| |
| ForStatement forStatement= getForStatement(); |
| CompilationUnit root= (CompilationUnit)forStatement.getRoot(); |
| |
| Collection<String> variableNames= new ScopeAnalyzer(root).getUsedVariableNames(forStatement.getStartPosition(), forStatement.getLength()); |
| results.addAll(variableNames); |
| |
| forStatement.accept(new GenericVisitor() { |
| @Override |
| public boolean visit(SingleVariableDeclaration node) { |
| results.add(node.getName().getIdentifier()); |
| return super.visit(node); |
| } |
| |
| @Override |
| public boolean visit(VariableDeclarationFragment fragment) { |
| results.add(fragment.getName().getIdentifier()); |
| return super.visit(fragment); |
| } |
| }); |
| |
| results.addAll(Arrays.asList(fUsedNames)); |
| |
| return results.toArray(new String[results.size()]); |
| } |
| |
| } |