/*******************************************************************************
* Copyright (c) 2000, 2010 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
* Sebastian Davids <sdavids@gmx.de> - Bug 37432 getInvertEqualsProposal
* Benjamin Muskalla <b.muskalla@gmx.net> - Bug 36350 convertToStringBufferPropsal
* Chris West (Faux) <eclipse@goeswhere.com> - [quick assist] "Use 'StringBuilder' for string concatenation" could fix existing misuses - https://bugs.eclipse.org/bugs/show_bug.cgi?id=282755
*******************************************************************************/
package org.eclipse.jdt.internal.ui.text.correction;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.swt.graphics.Image;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.resources.IFile;
import org.eclipse.text.edits.InsertEdit;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ltk.core.refactoring.Refactoring;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.TextChange;
import org.eclipse.ltk.core.refactoring.TextFileChange;
import org.eclipse.ltk.core.refactoring.codingspectator.Logger;
import org.eclipse.ltk.core.refactoring.history.RefactoringHistoryEvent;
import org.eclipse.jdt.core.Flags;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaModelMarker;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.NamingConventions;
import org.eclipse.jdt.core.compiler.IProblem;
import org.eclipse.jdt.core.dom.AST;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.AnonymousClassDeclaration;
import org.eclipse.jdt.core.dom.ArrayCreation;
import org.eclipse.jdt.core.dom.ArrayInitializer;
import org.eclipse.jdt.core.dom.ArrayType;
import org.eclipse.jdt.core.dom.Assignment;
import org.eclipse.jdt.core.dom.Block;
import org.eclipse.jdt.core.dom.BodyDeclaration;
import org.eclipse.jdt.core.dom.CastExpression;
import org.eclipse.jdt.core.dom.CatchClause;
import org.eclipse.jdt.core.dom.ChildListPropertyDescriptor;
import org.eclipse.jdt.core.dom.ClassInstanceCreation;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.ConditionalExpression;
import org.eclipse.jdt.core.dom.DoStatement;
import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.ExpressionStatement;
import org.eclipse.jdt.core.dom.ForStatement;
import org.eclipse.jdt.core.dom.IBinding;
import org.eclipse.jdt.core.dom.IMethodBinding;
import org.eclipse.jdt.core.dom.ITypeBinding;
import org.eclipse.jdt.core.dom.IVariableBinding;
import org.eclipse.jdt.core.dom.IfStatement;
import org.eclipse.jdt.core.dom.InfixExpression;
import org.eclipse.jdt.core.dom.Initializer;
import org.eclipse.jdt.core.dom.MethodDeclaration;
import org.eclipse.jdt.core.dom.MethodInvocation;
import org.eclipse.jdt.core.dom.Modifier;
import org.eclipse.jdt.core.dom.Name;
import org.eclipse.jdt.core.dom.ParenthesizedExpression;
import org.eclipse.jdt.core.dom.PrimitiveType;
import org.eclipse.jdt.core.dom.SimpleName;
import org.eclipse.jdt.core.dom.SimpleType;
import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
import org.eclipse.jdt.core.dom.Statement;
import org.eclipse.jdt.core.dom.StringLiteral;
import org.eclipse.jdt.core.dom.StructuralPropertyDescriptor;
import org.eclipse.jdt.core.dom.SwitchStatement;
import org.eclipse.jdt.core.dom.ThisExpression;
import org.eclipse.jdt.core.dom.TryStatement;
import org.eclipse.jdt.core.dom.Type;
import org.eclipse.jdt.core.dom.TypeDeclaration;
import org.eclipse.jdt.core.dom.VariableDeclaration;
import org.eclipse.jdt.core.dom.VariableDeclarationExpression;
import org.eclipse.jdt.core.dom.VariableDeclarationFragment;
import org.eclipse.jdt.core.dom.VariableDeclarationStatement;
import org.eclipse.jdt.core.dom.WhileStatement;
import org.eclipse.jdt.core.dom.rewrite.ASTRewrite;
import org.eclipse.jdt.core.dom.rewrite.ImportRewrite;
import org.eclipse.jdt.core.dom.rewrite.ImportRewrite.ImportRewriteContext;
import org.eclipse.jdt.core.dom.rewrite.ListRewrite;
import org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext;
import org.eclipse.jdt.internal.corext.codemanipulation.StubUtility;
import org.eclipse.jdt.internal.corext.dom.ASTNodeFactory;
import org.eclipse.jdt.internal.corext.dom.ASTNodes;
import org.eclipse.jdt.internal.corext.dom.Bindings;
import org.eclipse.jdt.internal.corext.dom.LinkedNodeFinder;
import org.eclipse.jdt.internal.corext.dom.Selection;
import org.eclipse.jdt.internal.corext.dom.SelectionAnalyzer;
import org.eclipse.jdt.internal.corext.dom.TokenScanner;
import org.eclipse.jdt.internal.corext.fix.CleanUpConstants;
import org.eclipse.jdt.internal.corext.fix.ControlStatementsFix;
import org.eclipse.jdt.internal.corext.fix.ConvertLoopFix;
import org.eclipse.jdt.internal.corext.fix.IProposableFix;
import org.eclipse.jdt.internal.corext.fix.LinkedProposalModel;
import org.eclipse.jdt.internal.corext.fix.VariableDeclarationFix;
import org.eclipse.jdt.internal.corext.refactoring.RefactoringAvailabilityTester;
import org.eclipse.jdt.internal.corext.refactoring.code.ConvertAnonymousToNestedRefactoring;
import org.eclipse.jdt.internal.corext.refactoring.code.ExtractConstantRefactoring;
import org.eclipse.jdt.internal.corext.refactoring.code.ExtractMethodRefactoring;
import org.eclipse.jdt.internal.corext.refactoring.code.ExtractTempRefactoring;
import org.eclipse.jdt.internal.corext.refactoring.code.InlineTempRefactoring;
import org.eclipse.jdt.internal.corext.refactoring.code.PromoteTempToFieldRefactoring;
import org.eclipse.jdt.internal.corext.refactoring.codingspectator.RefactoringGlobalStore;
import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
import org.eclipse.jdt.internal.corext.util.Messages;
import org.eclipse.jdt.ui.cleanup.CleanUpOptions;
import org.eclipse.jdt.ui.cleanup.ICleanUp;
import org.eclipse.jdt.ui.text.java.IInvocationContext;
import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal;
import org.eclipse.jdt.ui.text.java.IProblemLocation;
import org.eclipse.jdt.ui.text.java.IQuickAssistProcessor;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.JavaPluginImages;
import org.eclipse.jdt.internal.ui.fix.ControlStatementsCleanUp;
import org.eclipse.jdt.internal.ui.fix.ConvertLoopCleanUp;
import org.eclipse.jdt.internal.ui.fix.VariableDeclarationCleanUp;
import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility;
import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor;
import org.eclipse.jdt.internal.ui.text.correction.proposals.ASTRewriteCorrectionProposal;
import org.eclipse.jdt.internal.ui.text.correction.proposals.AssignToVariableAssistProposal;
import org.eclipse.jdt.internal.ui.text.correction.proposals.CUCorrectionProposal;
import org.eclipse.jdt.internal.ui.text.correction.proposals.FixCorrectionProposal;
import org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedCorrectionProposal;
import org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedNamesAssistProposal;
import org.eclipse.jdt.internal.ui.text.correction.proposals.NewDefiningMethodProposal;
import org.eclipse.jdt.internal.ui.text.correction.proposals.RenameRefactoringProposal;
import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels;
import org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider;
/**
*/
public class QuickAssistProcessor implements IQuickAssistProcessor {
public static final String SPLIT_JOIN_VARIABLE_DECLARATION_ID= "org.eclipse.jdt.ui.correction.splitJoinVariableDeclaration.assist"; //$NON-NLS-1$
public static final String CONVERT_FOR_LOOP_ID= "org.eclipse.jdt.ui.correction.convertForLoop.assist"; //$NON-NLS-1$
public static final String ASSIGN_TO_LOCAL_ID= "org.eclipse.jdt.ui.correction.assignToLocal.assist"; //$NON-NLS-1$
public static final String ASSIGN_TO_FIELD_ID= "org.eclipse.jdt.ui.correction.assignToField.assist"; //$NON-NLS-1$
public static final String ASSIGN_PARAM_TO_FIELD_ID= "org.eclipse.jdt.ui.correction.assignParamToField.assist"; //$NON-NLS-1$
public static final String ADD_BLOCK_ID= "org.eclipse.jdt.ui.correction.addBlock.assist"; //$NON-NLS-1$
public static final String EXTRACT_LOCAL_ID= "org.eclipse.jdt.ui.correction.extractLocal.assist"; //$NON-NLS-1$
public static final String EXTRACT_LOCAL_NOT_REPLACE_ID= "org.eclipse.jdt.ui.correction.extractLocalNotReplaceOccurrences.assist"; //$NON-NLS-1$
public static final String EXTRACT_CONSTANT_ID= "org.eclipse.jdt.ui.correction.extractConstant.assist"; //$NON-NLS-1$
public static final String INLINE_LOCAL_ID= "org.eclipse.jdt.ui.correction.inlineLocal.assist"; //$NON-NLS-1$
public static final String CONVERT_LOCAL_TO_FIELD_ID= "org.eclipse.jdt.ui.correction.convertLocalToField.assist"; //$NON-NLS-1$
public static final String CONVERT_ANONYMOUS_TO_LOCAL_ID= "org.eclipse.jdt.ui.correction.convertAnonymousToLocal.assist"; //$NON-NLS-1$
public static final String CONVERT_TO_STRING_BUFFER_ID= "org.eclipse.jdt.ui.correction.convertToStringBuffer.assist"; //$NON-NLS-1$
public static final String CONVERT_TO_MESSAGE_FORMAT_ID= "org.eclipse.jdt.ui.correction.convertToMessageFormat.assist"; //$NON-NLS-1$;
public QuickAssistProcessor() {
super();
}
public boolean hasAssists(IInvocationContext context) throws CoreException {
ASTNode coveringNode= context.getCoveringNode();
if (coveringNode != null) {
return getCatchClauseToThrowsProposals(context, coveringNode, null)
|| getRenameLocalProposals(context, coveringNode, null, false, null)
|| getRenameRefactoringProposal(context, coveringNode, null, false, null)
|| getAssignToVariableProposals(context, coveringNode, null)
|| getUnWrapProposals(context, coveringNode, null)
|| getAssignParamToFieldProposals(context, coveringNode, null)
|| getJoinVariableProposals(context, coveringNode, null)
|| getAddFinallyProposals(context, coveringNode, null)
|| getAddElseProposals(context, coveringNode, null)
|| getSplitVariableProposals(context, coveringNode, null)
|| getAddBlockProposals(context, coveringNode, null)
|| getArrayInitializerToArrayCreation(context, coveringNode, null)
|| getCreateInSuperClassProposals(context, coveringNode, null)
|| getInvertEqualsProposal(context, coveringNode, null)
|| getConvertForLoopProposal(context, coveringNode, null)
|| getExtractLocalProposal(context, null)
|| getExtractMethodProposal(context, coveringNode, null)
|| getInlineLocalProposal(context, coveringNode, null)
|| getConvertLocalToFieldProposal(context, coveringNode, null)
|| getConvertAnonymousToNestedProposal(context, coveringNode, null)
|| getConvertIterableLoopProposal(context, coveringNode, null)
|| getRemoveBlockProposals(context, coveringNode, null)
|| getMakeVariableDeclarationFinalProposals(context, null)
|| getMissingCaseStatementProposals(context, coveringNode, null)
|| getConvertStringConcatenationProposals(context, null);
}
return false;
}
public IJavaCompletionProposal[] getAssists(IInvocationContext context, IProblemLocation[] locations) throws CoreException {
ASTNode coveringNode= context.getCoveringNode();
if (coveringNode != null) {
ArrayList resultingCollections= new ArrayList();
boolean noErrorsAtLocation= noErrorsAtLocation(locations);
// quick assists that show up also if there is an error/warning
getRenameLocalProposals(context, coveringNode, locations, noErrorsAtLocation, resultingCollections);
getRenameRefactoringProposal(context, coveringNode, locations, noErrorsAtLocation, resultingCollections);
getAssignToVariableProposals(context, coveringNode, resultingCollections);
getAssignParamToFieldProposals(context, coveringNode, resultingCollections);
if (noErrorsAtLocation) {
getCatchClauseToThrowsProposals(context, coveringNode, resultingCollections);
getUnWrapProposals(context, coveringNode, resultingCollections);
getSplitVariableProposals(context, coveringNode, resultingCollections);
getJoinVariableProposals(context, coveringNode, resultingCollections);
getAddFinallyProposals(context, coveringNode, resultingCollections);
getAddElseProposals(context, coveringNode, resultingCollections);
getAddBlockProposals(context, coveringNode, resultingCollections);
getInvertEqualsProposal(context, coveringNode, resultingCollections);
getArrayInitializerToArrayCreation(context, coveringNode, resultingCollections);
getCreateInSuperClassProposals(context, coveringNode, resultingCollections);
getExtractLocalProposal(context, resultingCollections);
getExtractMethodProposal(context, coveringNode, resultingCollections);
getInlineLocalProposal(context, coveringNode, resultingCollections);
getConvertLocalToFieldProposal(context, coveringNode, resultingCollections);
getConvertAnonymousToNestedProposal(context, coveringNode, resultingCollections);
if (!getConvertForLoopProposal(context, coveringNode, resultingCollections))
getConvertIterableLoopProposal(context, coveringNode, resultingCollections);
getRemoveBlockProposals(context, coveringNode, resultingCollections);
getMakeVariableDeclarationFinalProposals(context, resultingCollections);
getConvertStringConcatenationProposals(context, resultingCollections);
getMissingCaseStatementProposals(context, coveringNode, resultingCollections);
}
return (IJavaCompletionProposal[])resultingCollections.toArray(new IJavaCompletionProposal[resultingCollections.size()]);
}
return null;
}
static boolean noErrorsAtLocation(IProblemLocation[] locations) {
if (locations != null) {
for (int i= 0; i < locations.length; i++) {
IProblemLocation location= locations[i];
if (location.isError()) {
if (IJavaModelMarker.JAVA_MODEL_PROBLEM_MARKER.equals(location.getMarkerType())
&& JavaCore.getOptionForConfigurableSeverity(location.getProblemId()) != null) {
// continue (only drop out for severe (non-optional) errors)
} else {
return false;
}
}
}
}
return true;
}
private static int getIndex(int offset, List statements) {
for (int i= 0; i < statements.size(); i++) {
Statement s= (Statement)statements.get(i);
if (offset < s.getStartPosition()) {
return i;
}
if (offset < s.getStartPosition() + s.getLength()) {
return -1;
}
}
return statements.size();
}
private static boolean getExtractMethodProposal(IInvocationContext context, ASTNode coveringNode, Collection proposals) throws CoreException {
if (!(coveringNode instanceof Expression) && !(coveringNode instanceof Statement) && !(coveringNode instanceof Block)) {
return false;
}
if (coveringNode instanceof Block) {
List statements= ((Block)coveringNode).statements();
int startIndex= getIndex(context.getSelectionOffset(), statements);
if (startIndex == -1)
return false;
int endIndex= getIndex(context.getSelectionOffset() + context.getSelectionLength(), statements);
if (endIndex == -1 || endIndex <= startIndex)
return false;
}
if (proposals == null) {
return true;
}
final ICompilationUnit cu= context.getCompilationUnit();
final ExtractMethodRefactoring extractMethodRefactoring= new ExtractMethodRefactoring(context.getASTRoot(), context.getSelectionOffset(), context.getSelectionLength());
extractMethodRefactoring.setMethodName("extracted"); //$NON-NLS-1$
if (extractMethodRefactoring.checkInitialConditions(new NullProgressMonitor()).isOK()) {
String label= CorrectionMessages.QuickAssistProcessor_extractmethod_description;
LinkedProposalModel linkedProposalModel= new LinkedProposalModel();
extractMethodRefactoring.setLinkedProposalModel(linkedProposalModel);
Image image= JavaPluginImages.get(JavaPluginImages.IMG_MISC_PUBLIC);
RefactoringCorrectionProposal proposal= new RefactoringCorrectionProposal(label, cu, extractMethodRefactoring, 4, image);
proposal.setCommandId(EXTRACT_CONSTANT_ID);
proposal.setLinkedProposalModel(linkedProposalModel);
proposals.add(proposal);
}
return true;
}
private static boolean getExtractLocalProposal(IInvocationContext context, Collection proposals) throws CoreException {
ASTNode node= context.getCoveredNode();
if (!(node instanceof Expression)) {
return false;
}
final Expression expression= (Expression)node;
ITypeBinding binding= expression.resolveTypeBinding();
if (binding == null || Bindings.isVoidType(binding)) {
return false;
}
if (proposals == null) {
return true;
}
final ICompilationUnit cu= context.getCompilationUnit();
ExtractTempRefactoring extractTempRefactoring= new ExtractTempRefactoring(context.getASTRoot(), expression.getStartPosition(), expression.getLength());
if (extractTempRefactoring.checkInitialConditions(new NullProgressMonitor()).isOK()) {
LinkedProposalModel linkedProposalModel= new LinkedProposalModel();
extractTempRefactoring.setLinkedProposalModel(linkedProposalModel);
extractTempRefactoring.setCheckResultForCompileProblems(false);
String label= CorrectionMessages.QuickAssistProcessor_extract_to_local_all_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
RefactoringCorrectionProposal proposal= new RefactoringCorrectionProposal(label, cu, extractTempRefactoring, 6, image) {
protected void init(Refactoring refactoring) throws CoreException {
ExtractTempRefactoring etr= (ExtractTempRefactoring)refactoring;
etr.setTempName(etr.guessTempName()); // expensive
}
};
proposal.setCommandId(EXTRACT_LOCAL_ID);
proposal.setLinkedProposalModel(linkedProposalModel);
proposals.add(proposal);
}
ExtractTempRefactoring extractTempRefactoringSelectedOnly= new ExtractTempRefactoring(context.getASTRoot(), expression.getStartPosition(), expression.getLength());
extractTempRefactoringSelectedOnly.setReplaceAllOccurrences(false);
if (extractTempRefactoringSelectedOnly.checkInitialConditions(new NullProgressMonitor()).isOK()) {
LinkedProposalModel linkedProposalModel= new LinkedProposalModel();
extractTempRefactoringSelectedOnly.setLinkedProposalModel(linkedProposalModel);
extractTempRefactoringSelectedOnly.setCheckResultForCompileProblems(false);
String label= CorrectionMessages.QuickAssistProcessor_extract_to_local_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
RefactoringCorrectionProposal proposal= new RefactoringCorrectionProposal(label, cu, extractTempRefactoringSelectedOnly, 5, image) {
protected void init(Refactoring refactoring) throws CoreException {
ExtractTempRefactoring etr= (ExtractTempRefactoring)refactoring;
etr.setTempName(etr.guessTempName()); // expensive
}
};
proposal.setCommandId(EXTRACT_LOCAL_NOT_REPLACE_ID);
proposal.setLinkedProposalModel(linkedProposalModel);
proposals.add(proposal);
}
ExtractConstantRefactoring extractConstRefactoring= new ExtractConstantRefactoring(context.getASTRoot(), expression.getStartPosition(), expression.getLength());
if (extractConstRefactoring.checkInitialConditions(new NullProgressMonitor()).isOK()) {
LinkedProposalModel linkedProposalModel= new LinkedProposalModel();
extractConstRefactoring.setLinkedProposalModel(linkedProposalModel);
extractConstRefactoring.setCheckResultForCompileProblems(false);
String label= CorrectionMessages.QuickAssistProcessor_extract_to_constant_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
RefactoringCorrectionProposal proposal= new RefactoringCorrectionProposal(label, cu, extractConstRefactoring, 4, image) {
protected void init(Refactoring refactoring) throws CoreException {
ExtractConstantRefactoring etr= (ExtractConstantRefactoring)refactoring;
etr.setConstantName(etr.guessConstantName()); // expensive
}
};
proposal.setCommandId(EXTRACT_CONSTANT_ID);
proposal.setLinkedProposalModel(linkedProposalModel);
proposals.add(proposal);
}
return false;
}
private static boolean getConvertAnonymousToNestedProposal(IInvocationContext context, final ASTNode node, Collection proposals) throws CoreException {
if (!(node instanceof Name))
return false;
ASTNode normalized= ASTNodes.getNormalizedNode(node);
if (normalized.getLocationInParent() != ClassInstanceCreation.TYPE_PROPERTY)
return false;
final AnonymousClassDeclaration anonymTypeDecl= ((ClassInstanceCreation)normalized.getParent()).getAnonymousClassDeclaration();
if (anonymTypeDecl == null || anonymTypeDecl.resolveBinding() == null) {
return false;
}
if (proposals == null) {
return true;
}
final ICompilationUnit cu= context.getCompilationUnit();
final ConvertAnonymousToNestedRefactoring refactoring= new ConvertAnonymousToNestedRefactoring(anonymTypeDecl);
String extTypeName= ASTNodes.getSimpleNameIdentifier((Name)node);
ITypeBinding anonymTypeBinding= anonymTypeDecl.resolveBinding();
String className;
if (anonymTypeBinding.getInterfaces().length == 0) {
className= Messages.format(CorrectionMessages.QuickAssistProcessor_name_extension_from_interface, extTypeName);
} else {
className= Messages.format(CorrectionMessages.QuickAssistProcessor_name_extension_from_class, extTypeName);
}
String[][] existingTypes= ((IType)anonymTypeBinding.getJavaElement()).resolveType(className);
int i= 1;
while (existingTypes != null) {
i++;
existingTypes= ((IType)anonymTypeBinding.getJavaElement()).resolveType(className + i);
}
refactoring.setClassName(i == 1 ? className : className + i);
if (refactoring.checkInitialConditions(new NullProgressMonitor()).isOK()) {
LinkedProposalModel linkedProposalModel= new LinkedProposalModel();
refactoring.setLinkedProposalModel(linkedProposalModel);
String label= CorrectionMessages.QuickAssistProcessor_convert_anonym_to_nested;
Image image= JavaPlugin.getImageDescriptorRegistry().get(JavaElementImageProvider.getTypeImageDescriptor(true, false, Flags.AccPrivate, false));
RefactoringCorrectionProposal proposal= new RefactoringCorrectionProposal(label, cu, refactoring, 5, image);
proposal.setLinkedProposalModel(linkedProposalModel);
proposal.setCommandId(CONVERT_ANONYMOUS_TO_LOCAL_ID);
proposals.add(proposal);
}
return false;
}
private static boolean getJoinVariableProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
ASTNode parent= node.getParent();
VariableDeclarationFragment fragment= null;
boolean onFirstAccess= false;
if (node instanceof SimpleName && node.getLocationInParent() == Assignment.LEFT_HAND_SIDE_PROPERTY) {
onFirstAccess= true;
SimpleName name= (SimpleName)node;
IBinding binding= name.resolveBinding();
if (!(binding instanceof IVariableBinding)) {
return false;
}
ASTNode declaring= context.getASTRoot().findDeclaringNode(binding);
if (declaring instanceof VariableDeclarationFragment) {
fragment= (VariableDeclarationFragment)declaring;
} else {
return false;
}
} else if (parent instanceof VariableDeclarationFragment) {
fragment= (VariableDeclarationFragment)parent;
} else {
return false;
}
IVariableBinding binding= fragment.resolveBinding();
if (fragment.getInitializer() != null || binding == null || binding.isField()) {
return false;
}
if (!(fragment.getParent() instanceof VariableDeclarationStatement)) {
return false;
}
VariableDeclarationStatement statement= (VariableDeclarationStatement)fragment.getParent();
SimpleName[] names= LinkedNodeFinder.findByBinding(statement.getParent(), binding);
if (names.length <= 1 || names[0] != fragment.getName()) {
return false;
}
SimpleName firstAccess= names[1];
if (onFirstAccess) {
if (firstAccess != node) {
return false;
}
} else {
if (firstAccess.getLocationInParent() != Assignment.LEFT_HAND_SIDE_PROPERTY) {
return false;
}
}
Assignment assignment= (Assignment)firstAccess.getParent();
if (assignment.getLocationInParent() != ExpressionStatement.EXPRESSION_PROPERTY) {
return false;
}
ExpressionStatement assignParent= (ExpressionStatement)assignment.getParent();
if (resultingCollections == null) {
return true;
}
AST ast= statement.getAST();
ASTRewrite rewrite= ASTRewrite.create(ast);
String label= CorrectionMessages.QuickAssistProcessor_joindeclaration_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
LinkedCorrectionProposal proposal= new LinkedCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
proposal.setCommandId(SPLIT_JOIN_VARIABLE_DECLARATION_ID);
Expression placeholder= (Expression)rewrite.createMoveTarget(assignment.getRightHandSide());
rewrite.set(fragment, VariableDeclarationFragment.INITIALIZER_PROPERTY, placeholder, null);
if (onFirstAccess) {
// replace assignment with variable declaration
rewrite.replace(assignParent, rewrite.createMoveTarget(statement), null);
} else {
// different scopes -> remove assignments, set variable initializer
if (ASTNodes.isControlStatementBody(assignParent.getLocationInParent())) {
Block block= ast.newBlock();
rewrite.replace(assignParent, block, null);
} else {
rewrite.remove(assignParent, null);
}
}
proposal.setEndPosition(rewrite.track(fragment.getName()));
resultingCollections.add(proposal);
return true;
}
private static boolean getSplitVariableProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
VariableDeclarationFragment fragment;
if (node instanceof VariableDeclarationFragment) {
fragment= (VariableDeclarationFragment)node;
} else if (node.getLocationInParent() == VariableDeclarationFragment.NAME_PROPERTY) {
fragment= (VariableDeclarationFragment)node.getParent();
} else {
return false;
}
if (fragment.getInitializer() == null) {
return false;
}
Statement statement;
ASTNode fragParent= fragment.getParent();
if (fragParent instanceof VariableDeclarationStatement) {
statement= (VariableDeclarationStatement)fragParent;
} else if (fragParent instanceof VariableDeclarationExpression) {
statement= (Statement)fragParent.getParent();
} else {
return false;
}
// statement is ForStatement or VariableDeclarationStatement
ASTNode statementParent= statement.getParent();
StructuralPropertyDescriptor property= statement.getLocationInParent();
if (!property.isChildListProperty()) {
return false;
}
List list= (List)statementParent.getStructuralProperty(property);
if (resultingCollections == null) {
return true;
}
AST ast= statement.getAST();
ASTRewrite rewrite= ASTRewrite.create(ast);
String label= CorrectionMessages.QuickAssistProcessor_splitdeclaration_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
proposal.setCommandId(SPLIT_JOIN_VARIABLE_DECLARATION_ID);
Statement newStatement;
int insertIndex= list.indexOf(statement);
Expression placeholder= (Expression)rewrite.createMoveTarget(fragment.getInitializer());
ITypeBinding binding= fragment.getInitializer().resolveTypeBinding();
if (placeholder instanceof ArrayInitializer && binding != null && binding.isArray()) {
ArrayCreation creation= ast.newArrayCreation();
creation.setInitializer((ArrayInitializer)placeholder);
final ITypeBinding componentType= binding.getElementType();
Type type= null;
if (componentType.isPrimitive())
type= ast.newPrimitiveType(PrimitiveType.toCode(componentType.getName()));
else
type= ast.newSimpleType(ast.newSimpleName(componentType.getName()));
creation.setType(ast.newArrayType(type, binding.getDimensions()));
placeholder= creation;
}
Assignment assignment= ast.newAssignment();
assignment.setRightHandSide(placeholder);
assignment.setLeftHandSide(ast.newSimpleName(fragment.getName().getIdentifier()));
if (statement instanceof VariableDeclarationStatement) {
newStatement= ast.newExpressionStatement(assignment);
insertIndex+= 1; // add after declaration
} else {
rewrite.replace(fragment.getParent(), assignment, null);
VariableDeclarationFragment newFrag= ast.newVariableDeclarationFragment();
newFrag.setName(ast.newSimpleName(fragment.getName().getIdentifier()));
newFrag.setExtraDimensions(fragment.getExtraDimensions());
VariableDeclarationExpression oldVarDecl= (VariableDeclarationExpression)fragParent;
VariableDeclarationStatement newVarDec= ast.newVariableDeclarationStatement(newFrag);
newVarDec.setType((Type)ASTNode.copySubtree(ast, oldVarDecl.getType()));
newVarDec.modifiers().addAll(ASTNodeFactory.newModifiers(ast, oldVarDecl.getModifiers()));
newStatement= newVarDec;
}
ListRewrite listRewriter= rewrite.getListRewrite(statementParent, (ChildListPropertyDescriptor)property);
listRewriter.insertAt(newStatement, insertIndex, null);
resultingCollections.add(proposal);
return true;
}
private static boolean getConvertStringConcatenationProposals(IInvocationContext context, Collection resultingCollections) {
ASTNode node= context.getCoveringNode();
BodyDeclaration parentDecl= ASTResolving.findParentBodyDeclaration(node);
if (!(parentDecl instanceof MethodDeclaration || parentDecl instanceof Initializer))
return false;
AST ast= node.getAST();
ITypeBinding stringBinding= ast.resolveWellKnownType("java.lang.String"); //$NON-NLS-1$
if (node instanceof Expression && !(node instanceof InfixExpression)) {
node= node.getParent();
}
if (node instanceof VariableDeclarationFragment) {
node= ((VariableDeclarationFragment)node).getInitializer();
} else if (node instanceof Assignment) {
node= ((Assignment)node).getRightHandSide();
}
InfixExpression oldInfixExpression= null;
while (node instanceof InfixExpression) {
InfixExpression curr= (InfixExpression)node;
if (curr.resolveTypeBinding() == stringBinding && curr.getOperator() == InfixExpression.Operator.PLUS) {
oldInfixExpression= curr; // is a infix expression we can use
} else {
break;
}
node= node.getParent();
}
if (oldInfixExpression == null)
return false;
if (resultingCollections == null) {
return true;
}
LinkedCorrectionProposal stringBufferProposal= getConvertToStringBufferProposal(context, ast, oldInfixExpression);
resultingCollections.add(stringBufferProposal);
ASTRewriteCorrectionProposal messageFormatProposal= getConvertToMessageFormatProposal(context, ast, oldInfixExpression);
if (messageFormatProposal != null)
resultingCollections.add(messageFormatProposal);
return true;
}
private static LinkedCorrectionProposal getConvertToStringBufferProposal(IInvocationContext context, AST ast, InfixExpression oldInfixExpression) {
String bufferOrBuilderName;
ICompilationUnit cu= context.getCompilationUnit();
if (JavaModelUtil.is50OrHigher(cu.getJavaProject())) {
bufferOrBuilderName= "StringBuilder"; //$NON-NLS-1$
} else {
bufferOrBuilderName= "StringBuffer"; //$NON-NLS-1$
}
ASTRewrite rewrite= ASTRewrite.create(ast);
SimpleName existingBuffer= getEnclosingAppendBuffer(oldInfixExpression);
String mechanismName= BasicElementLabels.getJavaElementName(existingBuffer == null ? bufferOrBuilderName : existingBuffer.getIdentifier());
String label= Messages.format(CorrectionMessages.QuickAssistProcessor_convert_to_string_buffer_description, mechanismName);
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
LinkedCorrectionProposal proposal= new LinkedCorrectionProposal(label, cu, rewrite, 1, image);
proposal.setCommandId(CONVERT_TO_STRING_BUFFER_ID);
Statement insertAfter;
String bufferName;
String groupID= "nameId"; //$NON-NLS-1$
ListRewrite listRewrite;
Statement enclosingStatement= ASTResolving.findParentStatement(oldInfixExpression);
if (existingBuffer != null) {
if (ASTNodes.isControlStatementBody(enclosingStatement.getLocationInParent())) {
Block newBlock= ast.newBlock();
listRewrite= rewrite.getListRewrite(newBlock, Block.STATEMENTS_PROPERTY);
insertAfter= null;
rewrite.replace(enclosingStatement, newBlock, null);
} else {
listRewrite= rewrite.getListRewrite(enclosingStatement.getParent(), (ChildListPropertyDescriptor)enclosingStatement.getLocationInParent());
insertAfter= enclosingStatement;
}
bufferName= existingBuffer.getIdentifier();
} else {
// create buffer
VariableDeclarationFragment frag= ast.newVariableDeclarationFragment();
// check if name is already in use and provide alternative
List fExcludedVariableNames= Arrays.asList(ASTResolving.getUsedVariableNames(oldInfixExpression));
SimpleType bufferType= ast.newSimpleType(ast.newName(bufferOrBuilderName));
ClassInstanceCreation newBufferExpression= ast.newClassInstanceCreation();
String[] newBufferNames= StubUtility.getVariableNameSuggestions(NamingConventions.VK_LOCAL, cu.getJavaProject(), bufferOrBuilderName, 0, fExcludedVariableNames, true);
bufferName= newBufferNames[0];
SimpleName bufferNameDeclaration= ast.newSimpleName(bufferName);
frag.setName(bufferNameDeclaration);
proposal.addLinkedPosition(rewrite.track(bufferNameDeclaration), true, groupID);
for (int i= 0; i < newBufferNames.length; i++) {
proposal.addLinkedPositionProposal(groupID, newBufferNames[i], null);
}
newBufferExpression.setType(bufferType);
frag.setInitializer(newBufferExpression);
VariableDeclarationStatement bufferDeclaration= ast.newVariableDeclarationStatement(frag);
bufferDeclaration.setType(ast.newSimpleType(ast.newName(bufferOrBuilderName)));
insertAfter= bufferDeclaration;
Statement statement= ASTResolving.findParentStatement(oldInfixExpression);
if (ASTNodes.isControlStatementBody(statement.getLocationInParent())) {
Block newBlock= ast.newBlock();
listRewrite= rewrite.getListRewrite(newBlock, Block.STATEMENTS_PROPERTY);
listRewrite.insertFirst(bufferDeclaration, null);
listRewrite.insertLast(rewrite.createMoveTarget(statement), null);
rewrite.replace(statement, newBlock, null);
} else {
listRewrite= rewrite.getListRewrite(statement.getParent(), (ChildListPropertyDescriptor)statement.getLocationInParent());
listRewrite.insertBefore(bufferDeclaration, statement, null);
}
}
List operands= new ArrayList();
collectInfixPlusOperands(oldInfixExpression, operands);
Statement lastAppend= insertAfter;
for (Iterator iter= operands.iterator(); iter.hasNext();) {
Expression operand= (Expression)iter.next();
MethodInvocation appendIncovationExpression= ast.newMethodInvocation();
appendIncovationExpression.setName(ast.newSimpleName("append")); //$NON-NLS-1$
SimpleName bufferNameReference= ast.newSimpleName(bufferName);
// If there was an existing name, don't offer to rename it
if (existingBuffer == null) {
proposal.addLinkedPosition(rewrite.track(bufferNameReference), true, groupID);
}
appendIncovationExpression.setExpression(bufferNameReference);
appendIncovationExpression.arguments().add(rewrite.createCopyTarget(operand));
ExpressionStatement appendExpressionStatement= ast.newExpressionStatement(appendIncovationExpression);
if (lastAppend == null) {
listRewrite.insertFirst(appendExpressionStatement, null);
} else {
listRewrite.insertAfter(appendExpressionStatement, lastAppend, null);
}
lastAppend= appendExpressionStatement;
}
if (existingBuffer != null) {
proposal.setEndPosition(rewrite.track(lastAppend));
if (insertAfter != null) {
rewrite.remove(enclosingStatement, null);
}
} else {
// replace old expression with toString
MethodInvocation bufferToString= ast.newMethodInvocation();
bufferToString.setName(ast.newSimpleName("toString")); //$NON-NLS-1$
SimpleName bufferNameReference= ast.newSimpleName(bufferName);
bufferToString.setExpression(bufferNameReference);
proposal.addLinkedPosition(rewrite.track(bufferNameReference), true, groupID);
rewrite.replace(oldInfixExpression, bufferToString, null);
proposal.setEndPosition(rewrite.track(bufferToString));
}
return proposal;
}
private static void collectInfixPlusOperands(Expression expression, List collector) {
if (expression instanceof InfixExpression && ((InfixExpression)expression).getOperator() == InfixExpression.Operator.PLUS) {
InfixExpression infixExpression= (InfixExpression)expression;
collectInfixPlusOperands(infixExpression.getLeftOperand(), collector);
collectInfixPlusOperands(infixExpression.getRightOperand(), collector);
List extendedOperands= infixExpression.extendedOperands();
for (Iterator iter= extendedOperands.iterator(); iter.hasNext();) {
collectInfixPlusOperands((Expression)iter.next(), collector);
}
} else {
collector.add(expression);
}
}
/**
* Checks
* <ul>
* <li>whether the given infix expression is the argument of a StringBuilder#append() or
* StringBuffer#append() invocation, and</li>
* <li>the append method is called on a simple variable, and</li>
* <li>the invocation occurs in a statement (not as nested expression)</li>
* </ul>
*
* @param infixExpression the infix expression
* @return the name of the variable we were appending to, or <code>null</code> if not matching
*/
private static SimpleName getEnclosingAppendBuffer(InfixExpression infixExpression) {
if (infixExpression.getLocationInParent() == MethodInvocation.ARGUMENTS_PROPERTY) {
MethodInvocation methodInvocation= (MethodInvocation)infixExpression.getParent();
// ..not in an expression.. (e.g. not sb.append("high" + 5).append(6);)
if (methodInvocation.getParent() instanceof Statement) {
// ..of a function called append:
if ("append".equals(methodInvocation.getName().getIdentifier())) { //$NON-NLS-1$
Expression expression= methodInvocation.getExpression();
// ..and the append is being called on a Simple object:
if (expression instanceof SimpleName) {
IBinding binding= ((SimpleName)expression).resolveBinding();
if (binding instanceof IVariableBinding) {
String typeName= ((IVariableBinding)binding).getType().getQualifiedName();
// And the object's type is a StringBuilder or StringBuffer:
if ("java.lang.StringBuilder".equals(typeName) || "java.lang.StringBuffer".equals(typeName)) { //$NON-NLS-1$ //$NON-NLS-2$
return (SimpleName)expression;
}
}
}
}
}
}
return null;
}
private static ASTRewriteCorrectionProposal getConvertToMessageFormatProposal(IInvocationContext context, AST ast, InfixExpression oldInfixExpression) {
ICompilationUnit cu= context.getCompilationUnit();
boolean is50OrHigher= JavaModelUtil.is50OrHigher(cu.getJavaProject());
ASTRewrite rewrite= ASTRewrite.create(ast);
CompilationUnit root= context.getASTRoot();
ImportRewrite importRewrite= StubUtility.createImportRewrite(root, true);
ContextSensitiveImportRewriteContext importContext= new ContextSensitiveImportRewriteContext(root, oldInfixExpression.getStartPosition(), importRewrite);
// collect operands
List operands= new ArrayList();
collectInfixPlusOperands(oldInfixExpression, operands);
List formatArguments= new ArrayList();
String formatString= ""; //$NON-NLS-1$
int i= 0;
for (Iterator iterator= operands.iterator(); iterator.hasNext();) {
Expression operand= (Expression)iterator.next();
if (operand instanceof StringLiteral) {
String value= ((StringLiteral)operand).getEscapedValue();
value= value.substring(1, value.length() - 1);
value= value.replaceAll("'", "''"); //$NON-NLS-1$ //$NON-NLS-2$
formatString+= value;
} else {
formatString+= "{" + i + "}"; //$NON-NLS-1$ //$NON-NLS-2$
ASTNode argument;
if (is50OrHigher) {
argument= rewrite.createCopyTarget(operand);
} else {
ITypeBinding binding= operand.resolveTypeBinding();
if (binding == null)
return null;
argument= rewrite.createCopyTarget(operand);
if (binding.isPrimitive()) {
ITypeBinding boxedBinding= Bindings.getBoxedTypeBinding(binding, ast);
if (boxedBinding != binding) {
Type boxedType= importRewrite.addImport(boxedBinding, ast, importContext);
ClassInstanceCreation cic= ast.newClassInstanceCreation();
cic.setType(boxedType);
cic.arguments().add(argument);
argument= cic;
}
}
}
formatArguments.add(argument);
i++;
}
}
if (formatArguments.size() == 0)
return null;
String label= CorrectionMessages.QuickAssistProcessor_convert_to_message_format;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, cu, rewrite, 0, image);
proposal.setCommandId(CONVERT_TO_MESSAGE_FORMAT_ID);
proposal.setImportRewrite(importRewrite);
String messageType= importRewrite.addImport("java.text.MessageFormat", importContext); //$NON-NLS-1$
MethodInvocation formatInvocation= ast.newMethodInvocation();
formatInvocation.setExpression(ast.newName(messageType));
formatInvocation.setName(ast.newSimpleName("format")); //$NON-NLS-1$
List arguments= formatInvocation.arguments();
StringLiteral formatStringArgument= ast.newStringLiteral();
formatStringArgument.setEscapedValue("\"" + formatString + "\""); //$NON-NLS-1$ //$NON-NLS-2$
arguments.add(formatStringArgument);
if (is50OrHigher) {
for (Iterator iterator= formatArguments.iterator(); iterator.hasNext();) {
arguments.add(iterator.next());
}
} else {
ArrayCreation objectArrayCreation= ast.newArrayCreation();
Type objectType= ast.newSimpleType(ast.newSimpleName("Object")); //$NON-NLS-1$
ArrayType arrayType= ast.newArrayType(objectType);
objectArrayCreation.setType(arrayType);
ArrayInitializer arrayInitializer= ast.newArrayInitializer();
List initializerExpressions= arrayInitializer.expressions();
for (Iterator iterator= formatArguments.iterator(); iterator.hasNext();) {
initializerExpressions.add(iterator.next());
}
objectArrayCreation.setInitializer(arrayInitializer);
arguments.add(objectArrayCreation);
}
rewrite.replace(oldInfixExpression, formatInvocation, null);
return proposal;
}
private static boolean getAssignToVariableProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
Statement statement= ASTResolving.findParentStatement(node);
if (!(statement instanceof ExpressionStatement)) {
return false;
}
ExpressionStatement expressionStatement= (ExpressionStatement)statement;
Expression expression= expressionStatement.getExpression();
if (expression.getNodeType() == ASTNode.ASSIGNMENT) {
return false; // too confusing and not helpful
}
ITypeBinding typeBinding= expression.resolveTypeBinding();
typeBinding= Bindings.normalizeTypeBinding(typeBinding);
if (typeBinding == null) {
return false;
}
if (resultingCollections == null) {
return true;
}
ICompilationUnit cu= context.getCompilationUnit();
AssignToVariableAssistProposal localProposal= new AssignToVariableAssistProposal(cu, AssignToVariableAssistProposal.LOCAL, expressionStatement, typeBinding, 2);
localProposal.setCommandId(ASSIGN_TO_LOCAL_ID);
resultingCollections.add(localProposal);
ASTNode type= ASTResolving.findParentType(expression);
if (type != null) {
AssignToVariableAssistProposal fieldProposal= new AssignToVariableAssistProposal(cu, AssignToVariableAssistProposal.FIELD, expressionStatement, typeBinding, 1);
fieldProposal.setCommandId(ASSIGN_TO_FIELD_ID);
resultingCollections.add(fieldProposal);
}
return false;
}
private static boolean getAssignParamToFieldProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
node= ASTNodes.getNormalizedNode(node);
ASTNode parent= node.getParent();
if (!(parent instanceof SingleVariableDeclaration) || !(parent.getParent() instanceof MethodDeclaration)) {
return false;
}
SingleVariableDeclaration paramDecl= (SingleVariableDeclaration)parent;
IVariableBinding binding= paramDecl.resolveBinding();
MethodDeclaration methodDecl= (MethodDeclaration)parent.getParent();
if (binding == null || methodDecl.getBody() == null) {
return false;
}
ITypeBinding typeBinding= binding.getType();
if (typeBinding == null) {
return false;
}
if (resultingCollections == null) {
return true;
}
ITypeBinding parentType= Bindings.getBindingOfParentType(node);
if (parentType != null) {
// assign to existing fields
CompilationUnit root= context.getASTRoot();
IVariableBinding[] declaredFields= parentType.getDeclaredFields();
boolean isStaticContext= ASTResolving.isInStaticContext(node);
for (int i= 0; i < declaredFields.length; i++) {
IVariableBinding curr= declaredFields[i];
if (isStaticContext == Modifier.isStatic(curr.getModifiers()) && typeBinding.isAssignmentCompatible(curr.getType())) {
ASTNode fieldDeclFrag= root.findDeclaringNode(curr);
if (fieldDeclFrag instanceof VariableDeclarationFragment) {
VariableDeclarationFragment fragment= (VariableDeclarationFragment)fieldDeclFrag;
if (fragment.getInitializer() == null) {
resultingCollections.add(new AssignToVariableAssistProposal(context.getCompilationUnit(), paramDecl, fragment, typeBinding, 1));
}
}
}
}
}
AssignToVariableAssistProposal fieldProposal= new AssignToVariableAssistProposal(context.getCompilationUnit(), paramDecl, null, typeBinding, 3);
fieldProposal.setCommandId(ASSIGN_PARAM_TO_FIELD_ID);
resultingCollections.add(fieldProposal);
return true;
}
private static boolean getAddFinallyProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
TryStatement tryStatement= ASTResolving.findParentTryStatement(node);
if (tryStatement == null || tryStatement.getFinally() != null) {
return false;
}
Statement statement= ASTResolving.findParentStatement(node);
if (tryStatement != statement && tryStatement.getBody() != statement) {
return false; // an node inside a catch or finally block
}
if (resultingCollections == null) {
return true;
}
AST ast= tryStatement.getAST();
ASTRewrite rewrite= ASTRewrite.create(ast);
Block finallyBody= ast.newBlock();
rewrite.set(tryStatement, TryStatement.FINALLY_PROPERTY, finallyBody, null);
String label= CorrectionMessages.QuickAssistProcessor_addfinallyblock_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_ADD);
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
resultingCollections.add(proposal);
return true;
}
private static boolean getAddElseProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
if (!(node instanceof IfStatement)) {
return false;
}
IfStatement ifStatement= (IfStatement)node;
if (ifStatement.getElseStatement() != null) {
return false;
}
if (resultingCollections == null) {
return true;
}
AST ast= node.getAST();
ASTRewrite rewrite= ASTRewrite.create(ast);
Block body= ast.newBlock();
rewrite.set(ifStatement, IfStatement.ELSE_STATEMENT_PROPERTY, body, null);
String label= CorrectionMessages.QuickAssistProcessor_addelseblock_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_ADD);
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
resultingCollections.add(proposal);
return true;
}
public static boolean getCatchClauseToThrowsProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
CatchClause catchClause= (CatchClause)ASTResolving.findAncestor(node, ASTNode.CATCH_CLAUSE);
if (catchClause == null) {
return false;
}
Statement statement= ASTResolving.findParentStatement(node);
if (statement != catchClause.getParent() && statement != catchClause.getBody()) {
return false; // selection is in a statement inside the body
}
Type type= catchClause.getException().getType();
if (!type.isSimpleType()) {
return false;
}
BodyDeclaration bodyDeclaration= ASTResolving.findParentBodyDeclaration(catchClause);
if (!(bodyDeclaration instanceof MethodDeclaration) && !(bodyDeclaration instanceof Initializer)) {
return false;
}
if (resultingCollections == null) {
return true;
}
AST ast= bodyDeclaration.getAST();
if (bodyDeclaration instanceof MethodDeclaration) {
MethodDeclaration methodDeclaration= (MethodDeclaration)bodyDeclaration;
ASTRewrite rewrite= ASTRewrite.create(ast);
removeCatchBlock(rewrite, catchClause);
ITypeBinding binding= type.resolveBinding();
if (binding == null || isNotYetThrown(binding, methodDeclaration.thrownExceptions())) {
Name name= ((SimpleType)type).getName();
Name newName= (Name)ASTNode.copySubtree(ast, name);
ListRewrite listRewriter= rewrite.getListRewrite(methodDeclaration, MethodDeclaration.THROWN_EXCEPTIONS_PROPERTY);
listRewriter.insertLast(newName, null);
}
String label= CorrectionMessages.QuickAssistProcessor_catchclausetothrows_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_OBJS_EXCEPTION);
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 4, image);
resultingCollections.add(proposal);
}
{ // for initializers or method declarations
ASTRewrite rewrite= ASTRewrite.create(ast);
removeCatchBlock(rewrite, catchClause);
String label= CorrectionMessages.QuickAssistProcessor_removecatchclause_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_OBJS_EXCEPTION);
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 5, image);
resultingCollections.add(proposal);
}
return true;
}
private static void removeCatchBlock(ASTRewrite rewrite, CatchClause catchClause) {
TryStatement tryStatement= (TryStatement)catchClause.getParent();
if (tryStatement.catchClauses().size() > 1 || tryStatement.getFinally() != null) {
rewrite.remove(catchClause, null);
} else {
Block block= tryStatement.getBody();
List statements= block.statements();
int nStatements= statements.size();
if (nStatements == 1) {
ASTNode first= (ASTNode)statements.get(0);
rewrite.replace(tryStatement, rewrite.createCopyTarget(first), null);
} else if (nStatements > 1) {
ListRewrite listRewrite= rewrite.getListRewrite(block, Block.STATEMENTS_PROPERTY);
ASTNode first= (ASTNode)statements.get(0);
ASTNode last= (ASTNode)statements.get(statements.size() - 1);
ASTNode newStatement= listRewrite.createCopyTarget(first, last);
if (ASTNodes.isControlStatementBody(tryStatement.getLocationInParent())) {
Block newBlock= rewrite.getAST().newBlock();
newBlock.statements().add(newStatement);
newStatement= newBlock;
}
rewrite.replace(tryStatement, newStatement, null);
} else {
rewrite.remove(tryStatement, null);
}
}
}
private static boolean isNotYetThrown(ITypeBinding binding, List thrownExcpetions) {
for (int i= 0; i < thrownExcpetions.size(); i++) {
Name name= (Name)thrownExcpetions.get(i);
ITypeBinding elem= (ITypeBinding)name.resolveBinding();
if (elem != null) {
if (Bindings.isSuperType(elem, binding)) { // existing exception is base class of new
return false;
}
}
}
return true;
}
private static boolean getRenameLocalProposals(IInvocationContext context, ASTNode node, IProblemLocation[] locations, boolean noErrorsAtLocation, Collection resultingCollections) {
if (!(node instanceof SimpleName)) {
return false;
}
SimpleName name= (SimpleName)node;
IBinding binding= name.resolveBinding();
if (binding != null && binding.getKind() == IBinding.PACKAGE) {
return false;
}
if (containsQuickFixableRenameLocal(locations)) {
return false;
}
if (resultingCollections == null) {
return true;
}
LinkedNamesAssistProposal proposal= new LinkedNamesAssistProposal(context, name);
if (!noErrorsAtLocation) {
proposal.setRelevance(1);
}
resultingCollections.add(proposal);
return true;
}
private static boolean getRenameRefactoringProposal(IInvocationContext context, ASTNode node, IProblemLocation[] locations, boolean noErrorsAtLocation, Collection resultingCollections)
throws CoreException {
if (!(context instanceof AssistContext)) {
return false;
}
IEditorPart editor= ((AssistContext)context).getEditor();
if (!(editor instanceof JavaEditor))
return false;
if (!(node instanceof SimpleName)) {
return false;
}
SimpleName name= (SimpleName)node;
IBinding binding= name.resolveBinding();
if (binding == null) {
return false;
}
IJavaElement javaElement= binding.getJavaElement();
if (javaElement == null || !RefactoringAvailabilityTester.isRenameElementAvailable(javaElement)) {
return false;
}
if (resultingCollections == null) {
return true;
}
RenameRefactoringProposal proposal= new RenameRefactoringProposal((JavaEditor)editor);
if (!noErrorsAtLocation) {
proposal.setRelevance(1);
} else if (containsQuickFixableRenameLocal(locations)) {
proposal.setRelevance(7);
}
resultingCollections.add(proposal);
return true;
}
private static boolean containsQuickFixableRenameLocal(IProblemLocation[] locations) {
if (locations != null) {
for (int i= 0; i < locations.length; i++) {
switch (locations[i].getProblemId()) {
case IProblem.LocalVariableHidingLocalVariable:
case IProblem.LocalVariableHidingField:
case IProblem.FieldHidingLocalVariable:
case IProblem.FieldHidingField:
case IProblem.ArgumentHidingLocalVariable:
case IProblem.ArgumentHidingField:
return true;
}
}
}
return false;
}
public static ASTNode getCopyOfInner(ASTRewrite rewrite, ASTNode statement, boolean toControlStatementBody) {
if (statement.getNodeType() == ASTNode.BLOCK) {
Block block= (Block)statement;
List innerStatements= block.statements();
int nStatements= innerStatements.size();
if (nStatements == 1) {
return rewrite.createCopyTarget(((ASTNode)innerStatements.get(0)));
} else if (nStatements > 1) {
if (toControlStatementBody) {
return rewrite.createCopyTarget(block);
}
ListRewrite listRewrite= rewrite.getListRewrite(block, Block.STATEMENTS_PROPERTY);
ASTNode first= (ASTNode)innerStatements.get(0);
ASTNode last= (ASTNode)innerStatements.get(nStatements - 1);
return listRewrite.createCopyTarget(first, last);
}
return null;
} else {
return rewrite.createCopyTarget(statement);
}
}
private static boolean getUnWrapProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
ASTNode outer= node;
Block block= null;
if (outer.getNodeType() == ASTNode.BLOCK) {
block= (Block)outer;
outer= block.getParent();
}
ASTNode body= null;
String label= null;
if (outer instanceof IfStatement) {
IfStatement ifStatement= (IfStatement)outer;
Statement elseBlock= ifStatement.getElseStatement();
if (elseBlock == null || elseBlock instanceof Block && ((Block)elseBlock).statements().isEmpty()) {
body= ifStatement.getThenStatement();
}
label= CorrectionMessages.QuickAssistProcessor_unwrap_ifstatement;
} else if (outer instanceof WhileStatement) {
body= ((WhileStatement)outer).getBody();
label= CorrectionMessages.QuickAssistProcessor_unwrap_whilestatement;
} else if (outer instanceof ForStatement) {
body= ((ForStatement)outer).getBody();
label= CorrectionMessages.QuickAssistProcessor_unwrap_forstatement;
} else if (outer instanceof DoStatement) {
body= ((DoStatement)outer).getBody();
label= CorrectionMessages.QuickAssistProcessor_unwrap_dostatement;
} else if (outer instanceof TryStatement) {
TryStatement tryStatement= (TryStatement)outer;
if (tryStatement.catchClauses().isEmpty()) {
body= tryStatement.getBody();
}
label= CorrectionMessages.QuickAssistProcessor_unwrap_trystatement;
} else if (outer instanceof AnonymousClassDeclaration) {
List decls= ((AnonymousClassDeclaration)outer).bodyDeclarations();
for (int i= 0; i < decls.size(); i++) {
ASTNode elem= (ASTNode)decls.get(i);
if (elem instanceof MethodDeclaration) {
Block curr= ((MethodDeclaration)elem).getBody();
if (curr != null && !curr.statements().isEmpty()) {
if (body != null) {
return false;
}
body= curr;
}
} else if (elem instanceof TypeDeclaration) {
return false;
}
}
label= CorrectionMessages.QuickAssistProcessor_unwrap_anonymous;
outer= ASTResolving.findParentStatement(outer);
if (outer == null) {
return false; // private Object o= new Object() { ... };
}
} else if (outer instanceof Block) {
// -> a block in a block
body= block;
outer= block;
label= CorrectionMessages.QuickAssistProcessor_unwrap_block;
} else if (outer instanceof ParenthesizedExpression) {
//ParenthesizedExpression expression= (ParenthesizedExpression) outer;
//body= expression.getExpression();
//label= CorrectionMessages.getString("QuickAssistProcessor.unwrap.parenthesis"); //$NON-NLS-1$
} else if (outer instanceof MethodInvocation) {
MethodInvocation invocation= (MethodInvocation)outer;
if (invocation.arguments().size() == 1) {
body= (ASTNode)invocation.arguments().get(0);
if (invocation.getParent().getNodeType() == ASTNode.EXPRESSION_STATEMENT) {
int kind= body.getNodeType();
if (kind != ASTNode.ASSIGNMENT && kind != ASTNode.PREFIX_EXPRESSION && kind != ASTNode.POSTFIX_EXPRESSION
&& kind != ASTNode.METHOD_INVOCATION && kind != ASTNode.SUPER_METHOD_INVOCATION) {
body= null;
}
}
label= CorrectionMessages.QuickAssistProcessor_unwrap_methodinvocation;
}
}
if (body == null) {
return false;
}
ASTRewrite rewrite= ASTRewrite.create(outer.getAST());
ASTNode inner= getCopyOfInner(rewrite, body, ASTNodes.isControlStatementBody(outer.getLocationInParent()));
if (inner == null) {
return false;
}
if (resultingCollections == null) {
return true;
}
rewrite.replace(outer, inner, null);
Image image= JavaPluginImages.get(JavaPluginImages.IMG_OBJS_EXCEPTION);
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
resultingCollections.add(proposal);
return true;
}
private static boolean isControlStatementWithBlock(ASTNode node) {
switch (node.getNodeType()) {
case ASTNode.IF_STATEMENT:
case ASTNode.WHILE_STATEMENT:
case ASTNode.FOR_STATEMENT:
case ASTNode.DO_STATEMENT:
return true;
default:
return false;
}
}
private static boolean getRemoveBlockProposals(IInvocationContext context, ASTNode coveringNode, Collection resultingCollections) {
IProposableFix[] fixes= ControlStatementsFix.createRemoveBlockFix(context.getASTRoot(), coveringNode);
if (fixes != null) {
if (resultingCollections == null) {
return true;
}
Map options= new Hashtable();
options.put(CleanUpConstants.CONTROL_STATEMENTS_USE_BLOCKS, CleanUpOptions.TRUE);
options.put(CleanUpConstants.CONTROL_STATMENTS_USE_BLOCKS_NEVER, CleanUpOptions.TRUE);
ICleanUp cleanUp= new ControlStatementsCleanUp(options);
for (int i= 0; i < fixes.length; i++) {
IProposableFix fix= fixes[i];
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
FixCorrectionProposal proposal= new FixCorrectionProposal(fix, cleanUp, 0, image, context);
resultingCollections.add(proposal);
}
return true;
}
return false;
}
private static boolean getAddBlockProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
if (!(node instanceof Statement)) {
return false;
}
/*
* only show the quick assist when the selection is of the control statement keywords (if, else, while,...)
* but not inside the statement or the if expression.
*/
if (!isControlStatementWithBlock(node) && isControlStatementWithBlock(node.getParent())) {
int statementStart= node.getStartPosition();
int statementEnd= statementStart + node.getLength();
int offset= context.getSelectionOffset();
int length= context.getSelectionLength();
if (length == 0) {
if (offset != statementEnd) { // cursor at end
return false;
}
} else {
if (offset > statementStart || offset + length < statementEnd) { // statement selected
return false;
}
}
node= node.getParent();
}
StructuralPropertyDescriptor childProperty= null;
ASTNode child= null;
switch (node.getNodeType()) {
case ASTNode.IF_STATEMENT:
ASTNode then= ((IfStatement)node).getThenStatement();
ASTNode elseStatement= ((IfStatement)node).getElseStatement();
if ((then instanceof Block) && (elseStatement instanceof Block || elseStatement == null)) {
break;
}
int thenEnd= then.getStartPosition() + then.getLength();
int selectionEnd= context.getSelectionOffset() + context.getSelectionLength();
if (!(then instanceof Block)) {
if (selectionEnd <= thenEnd) {
childProperty= IfStatement.THEN_STATEMENT_PROPERTY;
child= then;
break;
} else if (elseStatement != null && selectionEnd < elseStatement.getStartPosition()) {
// find out if we are before or after the 'else' keyword
try {
TokenScanner scanner= new TokenScanner(context.getCompilationUnit());
int elseTokenStart= scanner.getNextStartOffset(thenEnd, true);
if (selectionEnd < elseTokenStart) {
childProperty= IfStatement.THEN_STATEMENT_PROPERTY;
child= then;
break;
}
} catch (CoreException e) {
// ignore
}
}
}
if (elseStatement != null && !(elseStatement instanceof Block) && context.getSelectionOffset() >= thenEnd) {
childProperty= IfStatement.ELSE_STATEMENT_PROPERTY;
child= elseStatement;
}
break;
case ASTNode.WHILE_STATEMENT:
ASTNode whileBody= ((WhileStatement)node).getBody();
if (!(whileBody instanceof Block)) {
childProperty= WhileStatement.BODY_PROPERTY;
child= whileBody;
}
break;
case ASTNode.FOR_STATEMENT:
ASTNode forBody= ((ForStatement)node).getBody();
if (!(forBody instanceof Block)) {
childProperty= ForStatement.BODY_PROPERTY;
child= forBody;
}
break;
case ASTNode.DO_STATEMENT:
ASTNode doBody= ((DoStatement)node).getBody();
if (!(doBody instanceof Block)) {
childProperty= DoStatement.BODY_PROPERTY;
child= doBody;
}
break;
default:
}
if (child == null) {
return false;
}
if (resultingCollections == null) {
return true;
}
AST ast= node.getAST();
{
ASTRewrite rewrite= ASTRewrite.create(ast);
ASTNode childPlaceholder= rewrite.createMoveTarget(child);
Block replacingBody= ast.newBlock();
replacingBody.statements().add(childPlaceholder);
rewrite.set(node, childProperty, replacingBody, null);
String label;
if (childProperty == IfStatement.THEN_STATEMENT_PROPERTY) {
label= CorrectionMessages.QuickAssistProcessor_replacethenwithblock_description;
} else if (childProperty == IfStatement.ELSE_STATEMENT_PROPERTY) {
label= CorrectionMessages.QuickAssistProcessor_replaceelsewithblock_description;
} else {
label= CorrectionMessages.QuickAssistProcessor_replacebodywithblock_description;
}
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
LinkedCorrectionProposal proposal= new LinkedCorrectionProposal(label, context.getCompilationUnit(), rewrite, 5, image);
proposal.setCommandId(ADD_BLOCK_ID);
proposal.setEndPosition(rewrite.track(child));
resultingCollections.add(proposal);
}
if (node.getNodeType() == ASTNode.IF_STATEMENT) {
ASTRewrite rewrite= ASTRewrite.create(ast);
while (node.getLocationInParent() == IfStatement.ELSE_STATEMENT_PROPERTY) {
node= node.getParent();
}
boolean missingBlockFound= false;
boolean foundElse= false;
IfStatement ifStatement;
Statement thenStatment;
Statement elseStatment;
do {
ifStatement= (IfStatement)node;
thenStatment= ifStatement.getThenStatement();
elseStatment= ifStatement.getElseStatement();
if (!(thenStatment instanceof Block)) {
ASTNode childPlaceholder1= rewrite.createMoveTarget(thenStatment);
Block replacingBody1= ast.newBlock();
replacingBody1.statements().add(childPlaceholder1);
rewrite.set(ifStatement, IfStatement.THEN_STATEMENT_PROPERTY, replacingBody1, null);
if (thenStatment != child) {
missingBlockFound= true;
}
}
if (elseStatment != null) {
foundElse= true;
}
node= elseStatment;
} while (elseStatment instanceof IfStatement);
if (elseStatment != null && !(elseStatment instanceof Block)) {
ASTNode childPlaceholder2= rewrite.createMoveTarget(elseStatment);
Block replacingBody2= ast.newBlock();
replacingBody2.statements().add(childPlaceholder2);
rewrite.set(ifStatement, IfStatement.ELSE_STATEMENT_PROPERTY, replacingBody2, null);
if (elseStatment != child) {
missingBlockFound= true;
}
}
if (missingBlockFound && foundElse) {
String label= CorrectionMessages.QuickAssistProcessor_replacethenelsewithblock_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 6, image);
resultingCollections.add(proposal);
}
}
return true;
}
private static boolean getInvertEqualsProposal(IInvocationContext context, ASTNode node, Collection resultingCollections) {
ASTNode parent= node.getParent();
if (!(parent instanceof MethodInvocation)) {
return false;
}
MethodInvocation method= (MethodInvocation)parent;
String identifier= method.getName().getIdentifier();
if (!"equals".equals(identifier) && !"equalsIgnoreCase".equals(identifier)) { //$NON-NLS-1$ //$NON-NLS-2$
return false;
}
List arguments= method.arguments();
if (arguments.size() != 1) { //overloaded equals w/ more than 1 argument
return false;
}
Expression right= (Expression)arguments.get(0);
ITypeBinding binding= right.resolveTypeBinding();
if (binding != null && !(binding.isClass() || binding.isInterface())) { //overloaded equals w/ non-class/interface argument or null
return false;
}
if (resultingCollections == null) {
return true;
}
Expression left= method.getExpression();
AST ast= method.getAST();
ASTRewrite rewrite= ASTRewrite.create(ast);
if (left == null) { // equals(x) -> x.equals(this)
MethodInvocation replacement= ast.newMethodInvocation();
replacement.setName((SimpleName)rewrite.createCopyTarget(method.getName()));
replacement.arguments().add(ast.newThisExpression());
replacement.setExpression((Expression)rewrite.createCopyTarget(right));
rewrite.replace(method, replacement, null);
} else if (right instanceof ThisExpression) { // x.equals(this) -> equals(x)
MethodInvocation replacement= ast.newMethodInvocation();
replacement.setName((SimpleName)rewrite.createCopyTarget(method.getName()));
replacement.arguments().add(rewrite.createCopyTarget(left));
rewrite.replace(method, replacement, null);
} else {
ASTNode leftExpression= left;
while (leftExpression instanceof ParenthesizedExpression) {
leftExpression= ((ParenthesizedExpression)left).getExpression();
}
rewrite.replace(right, rewrite.createCopyTarget(leftExpression), null);
if (right instanceof CastExpression
|| right instanceof Assignment
|| right instanceof ConditionalExpression
|| right instanceof InfixExpression) {
ParenthesizedExpression paren= ast.newParenthesizedExpression();
paren.setExpression((Expression)rewrite.createCopyTarget(right));
rewrite.replace(left, paren, null);
} else {
rewrite.replace(left, rewrite.createCopyTarget(right), null);
}
}
String label= CorrectionMessages.QuickAssistProcessor_invertequals_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
LinkedCorrectionProposal proposal= new LinkedCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
resultingCollections.add(proposal);
return true;
}
private static boolean getArrayInitializerToArrayCreation(IInvocationContext context, ASTNode node, Collection resultingCollections) {
if (!(node instanceof ArrayInitializer)) {
return false;
}
ArrayInitializer initializer= (ArrayInitializer)node;
ASTNode parent= initializer.getParent();
while (parent instanceof ArrayInitializer) {
initializer= (ArrayInitializer)parent;
parent= parent.getParent();
}
ITypeBinding typeBinding= initializer.resolveTypeBinding();
if (!(parent instanceof VariableDeclaration) || typeBinding == null || !typeBinding.isArray()) {
return false;
}
if (resultingCollections == null) {
return true;
}
AST ast= node.getAST();
ASTRewrite rewrite= ASTRewrite.create(ast);
String label= CorrectionMessages.QuickAssistProcessor_typetoarrayInitializer_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
LinkedCorrectionProposal proposal= new LinkedCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
ImportRewrite imports= proposal.createImportRewrite(context.getASTRoot());
ImportRewriteContext importRewriteContext= new ContextSensitiveImportRewriteContext(node, imports);
String typeName= imports.addImport(typeBinding, importRewriteContext);
ArrayCreation creation= ast.newArrayCreation();
creation.setInitializer((ArrayInitializer)rewrite.createMoveTarget(initializer));
creation.setType((ArrayType)ASTNodeFactory.newType(ast, typeName));
rewrite.replace(initializer, creation, null);
resultingCollections.add(proposal);
return true;
}
public static boolean getCreateInSuperClassProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) throws CoreException {
if (!(node instanceof SimpleName) || !(node.getParent() instanceof MethodDeclaration)) {
return false;
}
MethodDeclaration decl= (MethodDeclaration)node.getParent();
if (decl.getName() != node || decl.resolveBinding() == null || Modifier.isPrivate(decl.getModifiers())) {
return false;
}
ICompilationUnit cu= context.getCompilationUnit();
CompilationUnit astRoot= context.getASTRoot();
IMethodBinding binding= decl.resolveBinding();
ITypeBinding[] paramTypes= binding.getParameterTypes();
ITypeBinding[] superTypes= Bindings.getAllSuperTypes(binding.getDeclaringClass());
if (resultingCollections == null) {
for (int i= 0; i < superTypes.length; i++) {
ITypeBinding curr= superTypes[i];
if (curr.isFromSource() && Bindings.findOverriddenMethodInType(curr, binding) == null) {
return true;
}
}
return false;
}
List params= decl.parameters();
String[] paramNames= new String[paramTypes.length];
for (int i= 0; i < params.size(); i++) {
SingleVariableDeclaration param= (SingleVariableDeclaration)params.get(i);
paramNames[i]= param.getName().getIdentifier();
}
for (int i= 0; i < superTypes.length; i++) {
ITypeBinding curr= superTypes[i];
if (curr.isFromSource()) {
IMethodBinding method= Bindings.findOverriddenMethodInType(curr, binding);
if (method == null) {
ITypeBinding typeDecl= curr.getTypeDeclaration();
ICompilationUnit targetCU= ASTResolving.findCompilationUnitForBinding(cu, astRoot, typeDecl);
if (targetCU != null) {
String label= Messages.format(CorrectionMessages.QuickAssistProcessor_createmethodinsuper_description, new String[] { BasicElementLabels.getJavaElementName(curr.getName()),
BasicElementLabels.getJavaElementName(binding.getName()) });
resultingCollections.add(new NewDefiningMethodProposal(label, targetCU, astRoot, typeDecl, binding, paramNames, 6));
}
}
}
}
return true;
}
private static boolean getConvertForLoopProposal(IInvocationContext context, ASTNode node, Collection resultingCollections) {
ForStatement forStatement= getEnclosingForStatementHeader(node);
if (forStatement == null)
return false;
if (resultingCollections == null)
return true;
IProposableFix fix= ConvertLoopFix.createConvertForLoopToEnhancedFix(context.getASTRoot(), forStatement);
if (fix == null)
return false;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
Map options= new HashMap();
options.put(CleanUpConstants.CONTROL_STATMENTS_CONVERT_FOR_LOOP_TO_ENHANCED, CleanUpOptions.TRUE);
ICleanUp cleanUp= new ConvertLoopCleanUp(options);
FixCorrectionProposal proposal= new FixCorrectionProposal(fix, cleanUp, 1, image, context);
proposal.setCommandId(CONVERT_FOR_LOOP_ID);
resultingCollections.add(proposal);
return true;
}
private static boolean getConvertIterableLoopProposal(IInvocationContext context, ASTNode node, Collection resultingCollections) {
ForStatement forStatement= getEnclosingForStatementHeader(node);
if (forStatement == null)
return false;
if (resultingCollections == null)
return true;
IProposableFix fix= ConvertLoopFix.createConvertIterableLoopToEnhancedFix(context.getASTRoot(), forStatement);
if (fix == null)
return false;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
Map options= new HashMap();
options.put(CleanUpConstants.CONTROL_STATMENTS_CONVERT_FOR_LOOP_TO_ENHANCED, CleanUpOptions.TRUE);
ICleanUp cleanUp= new ConvertLoopCleanUp(options);
FixCorrectionProposal proposal= new FixCorrectionProposal(fix, cleanUp, 1, image, context);
proposal.setCommandId(CONVERT_FOR_LOOP_ID);
resultingCollections.add(proposal);
return true;
}
private static ForStatement getEnclosingForStatementHeader(ASTNode node) {
if (node instanceof ForStatement)
return (ForStatement)node;
while (node != null) {
ASTNode parent= node.getParent();
if (parent instanceof ForStatement) {
StructuralPropertyDescriptor locationInParent= node.getLocationInParent();
if (locationInParent == ForStatement.EXPRESSION_PROPERTY
|| locationInParent == ForStatement.INITIALIZERS_PROPERTY
|| locationInParent == ForStatement.UPDATERS_PROPERTY)
return (ForStatement)parent;
else
return null;
}
node= parent;
}
return null;
}
private static boolean getMakeVariableDeclarationFinalProposals(IInvocationContext context, Collection resultingCollections) {
SelectionAnalyzer analyzer= new SelectionAnalyzer(Selection.createFromStartLength(context.getSelectionOffset(), context.getSelectionLength()), false);
context.getASTRoot().accept(analyzer);
ASTNode[] selectedNodes= analyzer.getSelectedNodes();
if (selectedNodes.length == 0)
return false;
IProposableFix fix= VariableDeclarationFix.createChangeModifierToFinalFix(context.getASTRoot(), selectedNodes);
if (fix == null)
return false;
if (resultingCollections == null)
return true;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
Map options= new Hashtable();
options.put(CleanUpConstants.VARIABLE_DECLARATIONS_USE_FINAL, CleanUpOptions.TRUE);
options.put(CleanUpConstants.VARIABLE_DECLARATIONS_USE_FINAL_LOCAL_VARIABLES, CleanUpOptions.TRUE);
options.put(CleanUpConstants.VARIABLE_DECLARATIONS_USE_FINAL_PARAMETERS, CleanUpOptions.TRUE);
options.put(CleanUpConstants.VARIABLE_DECLARATIONS_USE_FINAL_PRIVATE_FIELDS, CleanUpOptions.TRUE);
VariableDeclarationCleanUp cleanUp= new VariableDeclarationCleanUp(options);
FixCorrectionProposal proposal= new FixCorrectionProposal(fix, cleanUp, 5, image, context);
resultingCollections.add(proposal);
return true;
}
private static boolean getInlineLocalProposal(IInvocationContext context, final ASTNode node, Collection proposals) throws CoreException {
if (!(node instanceof SimpleName))
return false;
SimpleName name= (SimpleName)node;
IBinding binding= name.resolveBinding();
if (!(binding instanceof IVariableBinding))
return false;
IVariableBinding varBinding= (IVariableBinding)binding;
if (varBinding.isField() || varBinding.isParameter())
return false;
ASTNode decl= context.getASTRoot().findDeclaringNode(varBinding);
if (!(decl instanceof VariableDeclarationFragment) || decl.getLocationInParent() != VariableDeclarationStatement.FRAGMENTS_PROPERTY)
return false;
if (proposals == null) {
return true;
}
InlineTempRefactoring refactoring= new InlineTempRefactoring((VariableDeclaration)decl);
if (refactoring.checkInitialConditions(new NullProgressMonitor()).isOK()) {
String label= CorrectionMessages.QuickAssistProcessor_inline_local_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
RefactoringCorrectionProposal proposal= new RefactoringCorrectionProposal(label, context.getCompilationUnit(), refactoring, 5, image);
proposal.setCommandId(INLINE_LOCAL_ID);
proposals.add(proposal);
}
return true;
}
private static boolean getMissingCaseStatementProposals(IInvocationContext context, ASTNode node, Collection proposals) {
if (!(node instanceof SwitchStatement))
return false;
SwitchStatement switchStatement= (SwitchStatement)node;
if (context.getSelectionOffset() + context.getSelectionLength() >= switchStatement.getExpression().getStartPosition())
return false;
ITypeBinding expressionBinding= switchStatement.getExpression().resolveTypeBinding();
if (expressionBinding == null || !expressionBinding.isEnum())
return false;
String[] missingEnumCases= LocalCorrectionsSubProcessor.evaluateMissingEnumConstantCases(expressionBinding, switchStatement.statements());
if (missingEnumCases.length == 0)
return false;
if (proposals == null)
return true;
proposals.add(LocalCorrectionsSubProcessor.createMissingEnumConstantCaseProposals(context, switchStatement, missingEnumCases));
return true;
}
private static boolean getConvertLocalToFieldProposal(IInvocationContext context, final ASTNode node, Collection proposals) throws CoreException {
if (!(node instanceof SimpleName))
return false;
SimpleName name= (SimpleName)node;
IBinding binding= name.resolveBinding();
if (!(binding instanceof IVariableBinding) || name.getLocationInParent() != VariableDeclarationFragment.NAME_PROPERTY)
return false;
IVariableBinding varBinding= (IVariableBinding)binding;
if (varBinding.isField() || varBinding.isParameter())
return false;
VariableDeclarationFragment decl= (VariableDeclarationFragment)name.getParent();
if (decl.getLocationInParent() != VariableDeclarationStatement.FRAGMENTS_PROPERTY)
return false;
if (proposals == null) {
return true;
}
PromoteTempToFieldRefactoring refactoring= new PromoteTempToFieldRefactoring(decl);
if (refactoring.checkInitialConditions(new NullProgressMonitor()).isOK()) {
String label= CorrectionMessages.QuickAssistProcessor_convert_local_to_field_description;
Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
LinkedProposalModel linkedProposalModel= new LinkedProposalModel();
refactoring.setLinkedProposalModel(linkedProposalModel);
RefactoringCorrectionProposal proposal= new RefactoringCorrectionProposal(label, context.getCompilationUnit(), refactoring, 5, image);
proposal.setLinkedProposalModel(linkedProposalModel);
proposal.setCommandId(CONVERT_LOCAL_TO_FIELD_ID);
proposals.add(proposal);
}
return true;
}
/**
*
* @author Mohsen Vakilian, nchen - Captured invocation of refactorings through quick assist.
*
*/
private static class RefactoringCorrectionProposal extends CUCorrectionProposal {
private final Refactoring fRefactoring;
private RefactoringStatus fRefactoringStatus;
public RefactoringCorrectionProposal(String name, ICompilationUnit cu, Refactoring refactoring, int relevance, Image image) {
super(name, cu, null, relevance, image);
fRefactoring= refactoring;
}
/**
* Can be overridden by clients to perform expensive initializations of the refactoring
*
* @param refactoring the refactoring
* @throws CoreException if something goes wrong during init
*/
protected void init(Refactoring refactoring) throws CoreException {
}
protected TextChange createTextChange() throws CoreException {
init(fRefactoring);
fRefactoringStatus= fRefactoring.checkFinalConditions(new NullProgressMonitor());
if (fRefactoringStatus.hasFatalError()) {
TextFileChange dummyChange= new TextFileChange("fatal error", (IFile)getCompilationUnit().getResource()); //$NON-NLS-1$
dummyChange.setEdit(new InsertEdit(0, "")); //$NON-NLS-1$
return dummyChange;
}
//CODINGSPECTATOR: Mark the refactoring as invoked by quick assist so that this information gets added to the refactoring descriptor.
fRefactoring.setInvokedByQuickAssist();
return (TextChange)fRefactoring.createChange(new NullProgressMonitor());
}
/*
* @see org.eclipse.jdt.internal.ui.text.correction.proposals.CUCorrectionProposal#getAdditionalProposalInfo(org.eclipse.core.runtime.IProgressMonitor)
* @since 3.6
*/
public Object getAdditionalProposalInfo(IProgressMonitor monitor) {
if (fRefactoringStatus != null && fRefactoringStatus.hasFatalError()) {
return fRefactoringStatus.getEntryWithHighestSeverity().getMessage();
}
return super.getAdditionalProposalInfo(monitor);
}
/////////////////
//CODINGSPECTATOR
/////////////////
protected void aboutToPerformChange() {
JavaEditor javaEditor= (JavaEditor)JavaPlugin.getActivePage().getActiveEditor();
ITextSelection selection= (ITextSelection)javaEditor.getSelectionProvider().getSelection();
RefactoringGlobalStore.getNewInstance().setEditorSelectionInfo(EditorUtility.getEditorInputJavaElement(javaEditor, false), selection);
Logger.logRefactoringEvent(RefactoringHistoryEvent.CODINGSPECTATOR_REFACTORING_PERFORMED, fRefactoringStatus, fRefactoring);
}
}
}