/*******************************************************************************
* Copyright (c) 2000, 2009 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
* jens.lukowski@gmx.de - contributed code to convert prefix and postfix
* expressions into a combination of setter and getter calls.
* Dmitry Stalnov (dstalnov@fusionone.com) - contributed fix for
* bug Encapsulate field can fail when two variables in one variable declaration (see
* https://bugs.eclipse.org/bugs/show_bug.cgi?id=51540).
*******************************************************************************/
package org.eclipse.wst.jsdt.internal.corext.refactoring.sef;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.ltk.core.refactoring.Change;
import org.eclipse.ltk.core.refactoring.RefactoringDescriptor;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.TextChange;
import org.eclipse.ltk.core.refactoring.participants.RefactoringArguments;
import org.eclipse.ltk.core.refactoring.participants.ResourceChangeChecker;
import org.eclipse.text.edits.MultiTextEdit;
import org.eclipse.text.edits.TextEditGroup;
import org.eclipse.wst.jsdt.core.Flags;
import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
import org.eclipse.wst.jsdt.core.IField;
import org.eclipse.wst.jsdt.core.IJavaScriptElement;
import org.eclipse.wst.jsdt.core.IJavaScriptProject;
import org.eclipse.wst.jsdt.core.ISourceRange;
import org.eclipse.wst.jsdt.core.IType;
import org.eclipse.wst.jsdt.core.JavaScriptConventions;
import org.eclipse.wst.jsdt.core.JavaScriptCore;
import org.eclipse.wst.jsdt.core.JavaScriptModelException;
import org.eclipse.wst.jsdt.core.NamingConventions;
import org.eclipse.wst.jsdt.core.compiler.IProblem;
import org.eclipse.wst.jsdt.core.dom.AST;
import org.eclipse.wst.jsdt.core.dom.ASTNode;
import org.eclipse.wst.jsdt.core.dom.AbstractTypeDeclaration;
import org.eclipse.wst.jsdt.core.dom.AnonymousClassDeclaration;
import org.eclipse.wst.jsdt.core.dom.Assignment;
import org.eclipse.wst.jsdt.core.dom.Block;
import org.eclipse.wst.jsdt.core.dom.BodyDeclaration;
import org.eclipse.wst.jsdt.core.dom.ChildListPropertyDescriptor;
import org.eclipse.wst.jsdt.core.dom.ClassInstanceCreation;
import org.eclipse.wst.jsdt.core.dom.JavaScriptUnit;
import org.eclipse.wst.jsdt.core.dom.Expression;
import org.eclipse.wst.jsdt.core.dom.FieldAccess;
import org.eclipse.wst.jsdt.core.dom.FieldDeclaration;
import org.eclipse.wst.jsdt.core.dom.IFunctionBinding;
import org.eclipse.wst.jsdt.core.dom.ITypeBinding;
import org.eclipse.wst.jsdt.core.dom.IVariableBinding;
import org.eclipse.wst.jsdt.core.dom.JSdoc;
import org.eclipse.wst.jsdt.core.dom.Message;
import org.eclipse.wst.jsdt.core.dom.FunctionDeclaration;
import org.eclipse.wst.jsdt.core.dom.Modifier;
import org.eclipse.wst.jsdt.core.dom.ReturnStatement;
import org.eclipse.wst.jsdt.core.dom.SingleVariableDeclaration;
import org.eclipse.wst.jsdt.core.dom.Type;
import org.eclipse.wst.jsdt.core.dom.VariableDeclarationFragment;
import org.eclipse.wst.jsdt.core.dom.rewrite.ASTRewrite;
import org.eclipse.wst.jsdt.core.dom.rewrite.ImportRewrite;
import org.eclipse.wst.jsdt.core.dom.rewrite.ListRewrite;
import org.eclipse.wst.jsdt.core.refactoring.IJavaScriptRefactorings;
import org.eclipse.wst.jsdt.core.refactoring.descriptors.JavaScriptRefactoringDescriptor;
import org.eclipse.wst.jsdt.core.search.IJavaScriptSearchConstants;
import org.eclipse.wst.jsdt.core.search.SearchPattern;
import org.eclipse.wst.jsdt.internal.corext.codemanipulation.GetterSetterUtil;
import org.eclipse.wst.jsdt.internal.corext.codemanipulation.StubUtility;
import org.eclipse.wst.jsdt.internal.corext.dom.ASTNodeFactory;
import org.eclipse.wst.jsdt.internal.corext.dom.ASTNodes;
import org.eclipse.wst.jsdt.internal.corext.dom.Bindings;
import org.eclipse.wst.jsdt.internal.corext.dom.ModifierRewrite;
import org.eclipse.wst.jsdt.internal.corext.dom.NodeFinder;
import org.eclipse.wst.jsdt.internal.corext.refactoring.Checks;
import org.eclipse.wst.jsdt.internal.corext.refactoring.JDTRefactoringDescriptor;
import org.eclipse.wst.jsdt.internal.corext.refactoring.JDTRefactoringDescriptorComment;
import org.eclipse.wst.jsdt.internal.corext.refactoring.JavaRefactoringArguments;
import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringCoreMessages;
import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringScopeFactory;
import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringSearchEngine;
import org.eclipse.wst.jsdt.internal.corext.refactoring.base.JavaStatusContext;
import org.eclipse.wst.jsdt.internal.corext.refactoring.changes.DynamicValidationRefactoringChange;
import org.eclipse.wst.jsdt.internal.corext.refactoring.code.ScriptableRefactoring;
import org.eclipse.wst.jsdt.internal.corext.refactoring.util.RefactoringASTParser;
import org.eclipse.wst.jsdt.internal.corext.refactoring.util.ResourceUtil;
import org.eclipse.wst.jsdt.internal.corext.refactoring.util.TextChangeManager;
import org.eclipse.wst.jsdt.internal.corext.util.JdtFlags;
import org.eclipse.wst.jsdt.internal.corext.util.Messages;
import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
import org.eclipse.wst.jsdt.internal.ui.viewsupport.BindingLabelProvider;
import org.eclipse.wst.jsdt.ui.CodeGeneration;
import org.eclipse.wst.jsdt.ui.JavaScriptElementLabels;
/**
* Encapsulates a field into getter and setter calls.
*/
public class SelfEncapsulateFieldRefactoring extends ScriptableRefactoring {
private static final String ATTRIBUTE_VISIBILITY= "visibility"; //$NON-NLS-1$
private static final String ATTRIBUTE_GETTER= "getter"; //$NON-NLS-1$
private static final String ATTRIBUTE_SETTER= "setter"; //$NON-NLS-1$
private static final String ATTRIBUTE_INSERTION= "insertion"; //$NON-NLS-1$
private static final String ATTRIBUTE_COMMENTS= "comments"; //$NON-NLS-1$
private static final String ATTRIBUTE_DECLARING= "declaring"; //$NON-NLS-1$
private IField fField;
private TextChangeManager fChangeManager;
private JavaScriptUnit fRoot;
private VariableDeclarationFragment fFieldDeclaration;
private ASTRewrite fRewriter;
private ImportRewrite fImportRewrite;
private int fVisibility= -1;
private String fGetterName;
private String fSetterName;
private String fArgName;
private boolean fSetterMustReturnValue;
private int fInsertionIndex; // -1 represents as first method.
private boolean fEncapsulateDeclaringClass;
private boolean fGenerateJavadoc;
private List fUsedReadNames;
private List fUsedModifyNames;
private boolean fConsiderVisibility=true;
private static final String NO_NAME= ""; //$NON-NLS-1$
/**
* Creates a new self encapsulate field refactoring.
* @param field the field, or <code>null</code> if invoked by scripting
* @throws JavaScriptModelException
*/
public SelfEncapsulateFieldRefactoring(IField field) throws JavaScriptModelException {
fEncapsulateDeclaringClass= true;
fChangeManager= new TextChangeManager();
fField= field;
if (field != null)
initialize(field);
}
private void initialize(IField field) throws JavaScriptModelException {
fGetterName= GetterSetterUtil.getGetterName(field, null);
fSetterName= GetterSetterUtil.getSetterName(field, null);
fArgName= NamingConventions.removePrefixAndSuffixForFieldName(field.getJavaScriptProject(), field.getElementName(), field.getFlags());
checkArgName();
}
public IField getField() {
return fField;
}
public String getGetterName() {
return fGetterName;
}
public void setGetterName(String name) {
fGetterName= name;
Assert.isNotNull(fGetterName);
}
public String getSetterName() {
return fSetterName;
}
public void setSetterName(String name) {
fSetterName= name;
Assert.isNotNull(fSetterName);
}
public void setInsertionIndex(int index) {
fInsertionIndex= index;
}
public int getVisibility() {
return fVisibility;
}
public void setVisibility(int visibility) {
fVisibility= visibility;
}
public void setEncapsulateDeclaringClass(boolean encapsulateDeclaringClass) {
fEncapsulateDeclaringClass= encapsulateDeclaringClass;
}
public boolean getEncapsulateDeclaringClass() {
return fEncapsulateDeclaringClass;
}
public boolean getGenerateJavadoc() {
return fGenerateJavadoc;
}
public void setGenerateJavadoc(boolean value) {
fGenerateJavadoc= value;
}
//----activation checking ----------------------------------------------------------
public RefactoringStatus checkInitialConditions(IProgressMonitor pm) throws CoreException {
if (fVisibility < 0)
fVisibility= (fField.getFlags() & (Flags.AccPublic | Flags.AccPrivate));
RefactoringStatus result= new RefactoringStatus();
result.merge(Checks.checkAvailability(fField));
if (result.hasFatalError())
return result;
fRoot= new RefactoringASTParser(AST.JLS3).parse(fField.getJavaScriptUnit(), true, pm);
ISourceRange sourceRange= fField.getNameRange();
ASTNode node= NodeFinder.perform(fRoot, sourceRange.getOffset(), sourceRange.getLength());
if (node == null) {
return mappingErrorFound(result, node);
}
fFieldDeclaration= (VariableDeclarationFragment)ASTNodes.getParent(node, VariableDeclarationFragment.class);
if (fFieldDeclaration == null) {
return mappingErrorFound(result, node);
}
if (fFieldDeclaration.resolveBinding() == null) {
if (!processCompilerError(result, node))
result.addFatalError(RefactoringCoreMessages.SelfEncapsulateField_type_not_resolveable);
return result;
}
computeUsedNames();
fRewriter= ASTRewrite.create(fRoot.getAST());
return result;
}
private RefactoringStatus mappingErrorFound(RefactoringStatus result, ASTNode node) {
if (node != null && (node.getFlags() & ASTNode.MALFORMED) != 0 && processCompilerError(result, node))
return result;
result.addFatalError(getMappingErrorMessage());
return result;
}
private boolean processCompilerError(RefactoringStatus result, ASTNode node) {
Message[] messages= ASTNodes.getMessages(node, ASTNodes.INCLUDE_ALL_PARENTS);
if (messages.length == 0)
return false;
result.addFatalError(Messages.format(
RefactoringCoreMessages.SelfEncapsulateField_compiler_errors_field,
new String[] { fField.getElementName(), messages[0].getMessage()}));
return true;
}
private String getMappingErrorMessage() {
return Messages.format(
RefactoringCoreMessages.SelfEncapsulateField_cannot_analyze_selected_field,
new String[] {fField.getElementName()});
}
//---- Input checking ----------------------------------------------------------
public RefactoringStatus checkMethodNames() {
return checkMethodNames(isUsingLocalGetter(),isUsingLocalSetter());
}
public RefactoringStatus checkMethodNames(boolean usingLocalGetter, boolean usingLocalSetter) {
RefactoringStatus result= new RefactoringStatus();
IType declaringType= fField.getDeclaringType();
checkName(result, fGetterName, fUsedReadNames, declaringType, usingLocalGetter, fField);
checkName(result, fSetterName, fUsedModifyNames, declaringType, usingLocalSetter, fField);
return result;
}
private static void checkName(RefactoringStatus status, String name, List usedNames, IType type, boolean reUseExistingField, IField field) {
if ("".equals(name)) { //$NON-NLS-1$
status.addFatalError(RefactoringCoreMessages.Checks_Choose_name);
return;
}
boolean isStatic=false;
try {
isStatic= Flags.isStatic(field.getFlags());
} catch (JavaScriptModelException e) {
}
status.merge(Checks.checkMethodName(name));
for (Iterator iter= usedNames.iterator(); iter.hasNext(); ) {
IFunctionBinding method= (IFunctionBinding)iter.next();
String selector= method.getName();
if (selector.equals(name)) {
if (!reUseExistingField) {
status.addFatalError(Messages.format(RefactoringCoreMessages.SelfEncapsulateField_method_exists, new String[] { BindingLabelProvider.getBindingLabel(method, JavaScriptElementLabels.ALL_FULLY_QUALIFIED), type.getElementName() }));
} else {
boolean methodIsStatic= Modifier.isStatic(method.getModifiers());
if (methodIsStatic && !isStatic)
status.addWarning(Messages.format(RefactoringCoreMessages.SelfEncapsulateFieldRefactoring_static_method_but_nonstatic_field, new String[] { method.getName(), field.getElementName() }));
if (!methodIsStatic && isStatic)
status.addFatalError(Messages.format(RefactoringCoreMessages.SelfEncapsulateFieldRefactoring_nonstatic_method_but_static_field, new String[] { method.getName(), field.getElementName() }));
return;
}
}
}
if (reUseExistingField)
status.addFatalError(Messages.format(
RefactoringCoreMessages.SelfEncapsulateFieldRefactoring_methoddoesnotexist_status_fatalError,
new String[] {name, type.getElementName()}));
}
public RefactoringStatus checkFinalConditions(IProgressMonitor pm) throws CoreException {
RefactoringStatus result= new RefactoringStatus();
fChangeManager.clear();
pm.beginTask(NO_NAME, 12);
pm.setTaskName(RefactoringCoreMessages.SelfEncapsulateField_checking_preconditions);
boolean usingLocalGetter=isUsingLocalGetter();
boolean usingLocalSetter=isUsingLocalSetter();
result.merge(checkMethodNames(usingLocalGetter,usingLocalSetter));
pm.worked(1);
if (result.hasFatalError())
return result;
pm.setTaskName(RefactoringCoreMessages.SelfEncapsulateField_searching_for_cunits);
final SubProgressMonitor subPm= new SubProgressMonitor(pm, 5);
IJavaScriptUnit[] affectedCUs= RefactoringSearchEngine.findAffectedCompilationUnits(
SearchPattern.createPattern(fField, IJavaScriptSearchConstants.REFERENCES),
RefactoringScopeFactory.create(fField, fConsiderVisibility),
subPm,
result, true);
checkInHierarchy(result, usingLocalGetter, usingLocalSetter);
if (result.hasFatalError())
return result;
pm.setTaskName(RefactoringCoreMessages.SelfEncapsulateField_analyzing);
IProgressMonitor sub= new SubProgressMonitor(pm, 5);
sub.beginTask(NO_NAME, affectedCUs.length);
IVariableBinding fieldIdentifier= fFieldDeclaration.resolveBinding();
ITypeBinding declaringClass=
((AbstractTypeDeclaration)ASTNodes.getParent(fFieldDeclaration, AbstractTypeDeclaration.class)).resolveBinding();
List ownerDescriptions= new ArrayList();
IJavaScriptUnit owner= fField.getJavaScriptUnit();
fImportRewrite= StubUtility.createImportRewrite(fRoot, true);
for (int i= 0; i < affectedCUs.length; i++) {
IJavaScriptUnit unit= affectedCUs[i];
sub.subTask(unit.getElementName());
JavaScriptUnit root= null;
ASTRewrite rewriter= null;
ImportRewrite importRewrite;
List descriptions;
if (owner.equals(unit)) {
root= fRoot;
rewriter= fRewriter;
importRewrite= fImportRewrite;
descriptions= ownerDescriptions;
} else {
root= new RefactoringASTParser(AST.JLS3).parse(unit, true);
rewriter= ASTRewrite.create(root.getAST());
descriptions= new ArrayList();
importRewrite= StubUtility.createImportRewrite(root, true);
}
checkCompileErrors(result, root, unit);
AccessAnalyzer analyzer= new AccessAnalyzer(this, unit, fieldIdentifier, declaringClass, rewriter, importRewrite);
root.accept(analyzer);
result.merge(analyzer.getStatus());
if (!fSetterMustReturnValue)
fSetterMustReturnValue= analyzer.getSetterMustReturnValue();
if (result.hasFatalError()) {
fChangeManager.clear();
return result;
}
descriptions.addAll(analyzer.getGroupDescriptions());
if (!owner.equals(unit))
createEdits(unit, rewriter, descriptions, importRewrite);
sub.worked(1);
if (pm.isCanceled())
throw new OperationCanceledException();
}
ownerDescriptions.addAll(addGetterSetterChanges(fRoot, fRewriter, owner.findRecommendedLineSeparator(),usingLocalSetter, usingLocalGetter));
createEdits(owner, fRewriter, ownerDescriptions, fImportRewrite);
sub.done();
IFile[] filesToBeModified= ResourceUtil.getFiles(fChangeManager.getAllCompilationUnits());
result.merge(Checks.validateModifiesFiles(filesToBeModified, getValidationContext()));
if (result.hasFatalError())
return result;
ResourceChangeChecker.checkFilesToBeChanged(filesToBeModified, new SubProgressMonitor(pm, 1));
return result;
}
private void createEdits(IJavaScriptUnit unit, ASTRewrite rewriter, List groups, ImportRewrite importRewrite) throws CoreException {
TextChange change= fChangeManager.get(unit);
MultiTextEdit root= new MultiTextEdit();
change.setEdit(root);
root.addChild(importRewrite.rewriteImports(null));
root.addChild(rewriter.rewriteAST());
for (Iterator iter= groups.iterator(); iter.hasNext();) {
change.addTextEditGroup((TextEditGroup)iter.next());
}
}
public Change createChange(IProgressMonitor pm) throws CoreException {
final Map arguments= new HashMap();
String project= null;
IJavaScriptProject javaProject= fField.getJavaScriptProject();
if (javaProject != null)
project= javaProject.getElementName();
int flags= JavaScriptRefactoringDescriptor.JAR_MIGRATION | JavaScriptRefactoringDescriptor.JAR_REFACTORING | RefactoringDescriptor.STRUCTURAL_CHANGE | RefactoringDescriptor.MULTI_CHANGE;
final IType declaring= fField.getDeclaringType();
try {
if (declaring.isAnonymous() || declaring.isLocal())
flags|= JavaScriptRefactoringDescriptor.JAR_SOURCE_ATTACHMENT;
} catch (JavaScriptModelException exception) {
JavaScriptPlugin.log(exception);
}
final String description= Messages.format(RefactoringCoreMessages.SelfEncapsulateField_descriptor_description_short, fField.getElementName());
final String header= Messages.format(RefactoringCoreMessages.SelfEncapsulateFieldRefactoring_descriptor_description, new String[] { JavaScriptElementLabels.getElementLabel(fField, JavaScriptElementLabels.ALL_FULLY_QUALIFIED), JavaScriptElementLabels.getElementLabel(declaring, JavaScriptElementLabels.ALL_FULLY_QUALIFIED)});
final JDTRefactoringDescriptorComment comment= new JDTRefactoringDescriptorComment(project, this, header);
comment.addSetting(Messages.format(RefactoringCoreMessages.SelfEncapsulateField_original_pattern, JavaScriptElementLabels.getElementLabel(fField, JavaScriptElementLabels.ALL_FULLY_QUALIFIED)));
comment.addSetting(Messages.format(RefactoringCoreMessages.SelfEncapsulateField_getter_pattern, fGetterName));
comment.addSetting(Messages.format(RefactoringCoreMessages.SelfEncapsulateField_setter_pattern, fSetterName));
String visibility= JdtFlags.getVisibilityString(fVisibility);
if ("".equals(visibility)) //$NON-NLS-1$
visibility= RefactoringCoreMessages.SelfEncapsulateField_default_visibility;
comment.addSetting(Messages.format(RefactoringCoreMessages.SelfEncapsulateField_visibility_pattern, visibility));
if (fEncapsulateDeclaringClass)
comment.addSetting(RefactoringCoreMessages.SelfEncapsulateField_use_accessors);
else
comment.addSetting(RefactoringCoreMessages.SelfEncapsulateField_do_not_use_accessors);
if (fGenerateJavadoc)
comment.addSetting(RefactoringCoreMessages.SelfEncapsulateField_generate_comments);
final JDTRefactoringDescriptor descriptor= new JDTRefactoringDescriptor(IJavaScriptRefactorings.ENCAPSULATE_FIELD, project, description, comment.asString(), arguments, flags);
arguments.put(JDTRefactoringDescriptor.ATTRIBUTE_INPUT, descriptor.elementToHandle(fField));
arguments.put(ATTRIBUTE_VISIBILITY, Integer.valueOf(fVisibility).toString());
arguments.put(ATTRIBUTE_INSERTION, Integer.valueOf(fInsertionIndex).toString());
arguments.put(ATTRIBUTE_SETTER, fSetterName);
arguments.put(ATTRIBUTE_GETTER, fGetterName);
arguments.put(ATTRIBUTE_COMMENTS, Boolean.valueOf(fGenerateJavadoc).toString());
arguments.put(ATTRIBUTE_DECLARING, Boolean.valueOf(fEncapsulateDeclaringClass).toString());
final DynamicValidationRefactoringChange result= new DynamicValidationRefactoringChange(descriptor, getName());
TextChange[] changes= fChangeManager.getAllChanges();
pm.beginTask(NO_NAME, changes.length);
pm.setTaskName(RefactoringCoreMessages.SelfEncapsulateField_create_changes);
for (int i= 0; i < changes.length; i++) {
result.add(changes[i]);
pm.worked(1);
}
pm.done();
return result;
}
public String getName() {
return RefactoringCoreMessages.SelfEncapsulateField_name;
}
//---- Helper methods -------------------------------------------------------------
private void checkCompileErrors(RefactoringStatus result, JavaScriptUnit root, IJavaScriptUnit element) {
IProblem[] messages= root.getProblems();
for (int i= 0; i < messages.length; i++) {
IProblem problem= messages[i];
if (!isIgnorableProblem(problem)) {
result.addError(Messages.format(
RefactoringCoreMessages.SelfEncapsulateField_compiler_errors_update,
element.getElementName()), JavaStatusContext.create(element));
return;
}
}
}
private void checkInHierarchy(RefactoringStatus status, boolean usingLocalGetter, boolean usingLocalSetter) {
AbstractTypeDeclaration declaration= (AbstractTypeDeclaration)ASTNodes.getParent(fFieldDeclaration, AbstractTypeDeclaration.class);
ITypeBinding type= declaration.resolveBinding();
if (type != null) {
ITypeBinding fieldType= fFieldDeclaration.resolveBinding().getType();
checkMethodInHierarchy(type, fGetterName, fieldType, new ITypeBinding[0], status, usingLocalGetter);
checkMethodInHierarchy(type, fSetterName, fFieldDeclaration.getAST().resolveWellKnownType("void"), //$NON-NLS-1$
new ITypeBinding[] {fieldType}, status, usingLocalSetter);
}
}
public static void checkMethodInHierarchy(ITypeBinding type, String methodName, ITypeBinding returnType, ITypeBinding[] parameters, RefactoringStatus result, boolean reUseMethod) {
IFunctionBinding method= Bindings.findMethodInHierarchy(type, methodName, parameters);
if (method != null) {
boolean returnTypeClash= false;
ITypeBinding methodReturnType= method.getReturnType();
if (returnType != null && methodReturnType != null) {
String returnTypeKey= returnType.getKey();
String methodReturnTypeKey= methodReturnType.getKey();
if (returnTypeKey == null && methodReturnTypeKey == null) {
returnTypeClash= returnType != methodReturnType;
} else if (returnTypeKey != null && methodReturnTypeKey != null) {
returnTypeClash= !returnTypeKey.equals(methodReturnTypeKey);
}
}
ITypeBinding dc= method.getDeclaringClass();
if (returnTypeClash) {
result.addError(Messages.format(RefactoringCoreMessages.Checks_methodName_returnTypeClash,
new Object[] {methodName, dc.getName()}),
JavaStatusContext.create(method));
} else {
if (!reUseMethod)
result.addError(Messages.format(RefactoringCoreMessages.Checks_methodName_overrides,
new Object[] {methodName, dc.getName()}),
JavaStatusContext.create(method));
}
} else {
if (reUseMethod){
result.addError(Messages.format(RefactoringCoreMessages.SelfEncapsulateFieldRefactoring_nosuchmethod_status_fatalError,
new Object[] {methodName}),
JavaStatusContext.create(method));
}
}
}
private void computeUsedNames() {
fUsedReadNames= new ArrayList(0);
fUsedModifyNames= new ArrayList(0);
IVariableBinding binding= fFieldDeclaration.resolveBinding();
ITypeBinding type= binding.getType();
IFunctionBinding[] methods= binding.getDeclaringClass().getDeclaredMethods();
for (int i= 0; i < methods.length; i++) {
IFunctionBinding method= methods[i];
ITypeBinding[] parameters= methods[i].getParameterTypes();
if (parameters == null || parameters.length == 0) {
fUsedReadNames.add(method);
} else if (parameters.length == 1 && parameters[0] == type) {
fUsedModifyNames.add(method);
}
}
}
private List addGetterSetterChanges(JavaScriptUnit root, ASTRewrite rewriter, String lineDelimiter, boolean usingLocalSetter, boolean usingLocalGetter) throws CoreException {
List result= new ArrayList(2);
AST ast= root.getAST();
FieldDeclaration decl= (FieldDeclaration)ASTNodes.getParent(fFieldDeclaration, ASTNode.FIELD_DECLARATION);
int position= 0;
int numberOfMethods= 0;
List members= ASTNodes.getBodyDeclarations(decl.getParent());
for (Iterator iter= members.iterator(); iter.hasNext();) {
BodyDeclaration element= (BodyDeclaration)iter.next();
if (element.getNodeType() == ASTNode.FUNCTION_DECLARATION) {
if (fInsertionIndex == -1) {
break;
} else if (fInsertionIndex == numberOfMethods) {
position++;
break;
}
numberOfMethods++;
}
position++;
}
TextEditGroup description;
ListRewrite rewrite= fRewriter.getListRewrite(decl.getParent(), getBodyDeclarationsProperty(decl.getParent()));
if (!JdtFlags.isFinal(fField) && !usingLocalSetter) {
description= new TextEditGroup(RefactoringCoreMessages.SelfEncapsulateField_add_setter);
result.add(description);
rewrite.insertAt(createSetterMethod(ast, rewriter, lineDelimiter), position++, description);
}
if (!usingLocalGetter){
description= new TextEditGroup(RefactoringCoreMessages.SelfEncapsulateField_add_getter);
result.add(description);
rewrite.insertAt(createGetterMethod(ast, rewriter, lineDelimiter), position, description);
}
if (!JdtFlags.isPrivate(fField))
result.add(makeDeclarationPrivate(rewriter, decl));
return result;
}
private TextEditGroup makeDeclarationPrivate(ASTRewrite rewriter, FieldDeclaration decl) {
AST ast= rewriter.getAST();
TextEditGroup description= new TextEditGroup(RefactoringCoreMessages.SelfEncapsulateField_change_visibility);
if (decl.fragments().size() > 1) {
//TODO: doesn't work for cases like this: int field1, field2= field1, field3= field2; // keeping refs to field
rewriter.remove(fFieldDeclaration, description);
ChildListPropertyDescriptor descriptor= getBodyDeclarationsProperty(decl.getParent());
VariableDeclarationFragment newField= (VariableDeclarationFragment) rewriter.createCopyTarget(fFieldDeclaration);
FieldDeclaration fieldDecl= ast.newFieldDeclaration(newField);
fieldDecl.setType((Type)rewriter.createCopyTarget(decl.getType()));
fieldDecl.modifiers().addAll(ASTNodeFactory.newModifiers(ast, Modifier.PRIVATE));
rewriter.getListRewrite(decl.getParent(), descriptor).insertAfter(fieldDecl, decl, description);
} else {
ModifierRewrite.create(rewriter, decl).setVisibility(Modifier.PRIVATE, description);
}
return description;
}
private ChildListPropertyDescriptor getBodyDeclarationsProperty(ASTNode declaration) {
if (declaration instanceof AnonymousClassDeclaration)
return AnonymousClassDeclaration.BODY_DECLARATIONS_PROPERTY;
else if (declaration instanceof AbstractTypeDeclaration)
return ((AbstractTypeDeclaration) declaration).getBodyDeclarationsProperty();
Assert.isTrue(false);
return null;
}
private FunctionDeclaration createSetterMethod(AST ast, ASTRewrite rewriter, String lineDelimiter) throws CoreException {
FieldDeclaration field= (FieldDeclaration)ASTNodes.getParent(fFieldDeclaration, FieldDeclaration.class);
Type type= field.getType();
FunctionDeclaration result= ast.newFunctionDeclaration();
result.setName(ast.newSimpleName(fSetterName));
result.modifiers().addAll(ASTNodeFactory.newModifiers(ast, createModifiers()));
if (fSetterMustReturnValue) {
result.setReturnType2((Type)rewriter.createCopyTarget(type));
}
SingleVariableDeclaration param= ast.newSingleVariableDeclaration();
result.parameters().add(param);
param.setName(ast.newSimpleName(fArgName));
param.setType((Type)rewriter.createCopyTarget(type));
Block block= ast.newBlock();
result.setBody(block);
Assignment ass= ast.newAssignment();
ass.setLeftHandSide(createFieldAccess(ast));
ass.setRightHandSide(ast.newSimpleName(fArgName));
if (fSetterMustReturnValue) {
ReturnStatement rs= ast.newReturnStatement();
rs.setExpression(ass);
block.statements().add(rs);
} else {
block.statements().add(ast.newExpressionStatement(ass));
}
if (fGenerateJavadoc) {
String string= CodeGeneration.getSetterComment(
fField.getJavaScriptUnit() , getTypeName(field.getParent()), fSetterName,
fField.getElementName(), ASTNodes.asString(type), fArgName,
NamingConventions.removePrefixAndSuffixForFieldName(fField.getJavaScriptProject(), fField.getElementName(), fField.getFlags()),
lineDelimiter);
if (string != null) {
JSdoc javadoc= (JSdoc)fRewriter.createStringPlaceholder(string, ASTNode.JSDOC);
result.setJavadoc(javadoc);
}
}
return result;
}
private FunctionDeclaration createGetterMethod(AST ast, ASTRewrite rewriter, String lineDelimiter) throws CoreException {
FieldDeclaration field= (FieldDeclaration)ASTNodes.getParent(fFieldDeclaration, FieldDeclaration.class);
Type type= field.getType();
FunctionDeclaration result= ast.newFunctionDeclaration();
result.setName(ast.newSimpleName(fGetterName));
result.modifiers().addAll(ASTNodeFactory.newModifiers(ast, createModifiers()));
result.setReturnType2((Type)rewriter.createCopyTarget(type));
Block block= ast.newBlock();
result.setBody(block);
ReturnStatement rs= ast.newReturnStatement();
rs.setExpression(ast.newSimpleName(fField.getElementName()));
block.statements().add(rs);
if (fGenerateJavadoc) {
String string= CodeGeneration.getGetterComment(
fField.getJavaScriptUnit() , getTypeName(field.getParent()), fGetterName,
fField.getElementName(), ASTNodes.asString(type),
NamingConventions.removePrefixAndSuffixForFieldName(fField.getJavaScriptProject(), fField.getElementName(), fField.getFlags()),
lineDelimiter);
if (string != null) {
JSdoc javadoc= (JSdoc)fRewriter.createStringPlaceholder(string, ASTNode.JSDOC);
result.setJavadoc(javadoc);
}
}
return result;
}
private int createModifiers() throws JavaScriptModelException {
int result= 0;
if (Flags.isPublic(fVisibility))
result |= Modifier.PUBLIC;
else if (Flags.isPrivate(fVisibility))
result |= Modifier.PRIVATE;
if (JdtFlags.isStatic(fField))
result |= Modifier.STATIC;
return result;
}
private Expression createFieldAccess(AST ast) throws JavaScriptModelException {
String fieldName= fField.getElementName();
if (fArgName.equals(fieldName)) {
if (JdtFlags.isStatic(fField)) {
return ast.newQualifiedName(
ast.newSimpleName(fField.getDeclaringType().getElementName()),
ast.newSimpleName(fieldName));
} else {
FieldAccess result= ast.newFieldAccess();
result.setExpression(ast.newThisExpression());
result.setName(ast.newSimpleName(fieldName));
return result;
}
} else {
return ast.newSimpleName(fieldName);
}
}
private void checkArgName() {
String fieldName= fField.getElementName();
boolean isStatic= true;
try {
isStatic= JdtFlags.isStatic(fField);
} catch(JavaScriptModelException e) {
}
IJavaScriptProject project= fField.getJavaScriptProject();
String sourceLevel= project.getOption(JavaScriptCore.COMPILER_SOURCE, true);
String compliance= project.getOption(JavaScriptCore.COMPILER_COMPLIANCE, true);
if ((isStatic && fArgName.equals(fieldName) && fieldName.equals(fField.getDeclaringType().getElementName()))
|| JavaScriptConventions.validateIdentifier(fArgName, sourceLevel, compliance).getSeverity() == IStatus.ERROR)
fArgName= "_" + fArgName; //$NON-NLS-1$
}
private String getTypeName(ASTNode type) {
if (type instanceof AbstractTypeDeclaration) {
return ((AbstractTypeDeclaration)type).getName().getIdentifier();
} else if (type instanceof AnonymousClassDeclaration) {
ClassInstanceCreation node= (ClassInstanceCreation)ASTNodes.getParent(type, ClassInstanceCreation.class);
return ASTNodes.asString(node.getType());
}
Assert.isTrue(false, "Should not happen"); //$NON-NLS-1$
return null;
}
public RefactoringStatus initialize(RefactoringArguments arguments) {
if (arguments instanceof JavaRefactoringArguments) {
final JavaRefactoringArguments extended= (JavaRefactoringArguments) arguments;
final String handle= extended.getAttribute(JDTRefactoringDescriptor.ATTRIBUTE_INPUT);
if (handle != null) {
final IJavaScriptElement element= JDTRefactoringDescriptor.handleToElement(extended.getProject(), handle, false);
if (element == null || !element.exists() || element.getElementType() != IJavaScriptElement.FIELD)
return createInputFatalStatus(element, IJavaScriptRefactorings.ENCAPSULATE_FIELD);
else {
fField= (IField) element;
try {
initialize(fField);
} catch (JavaScriptModelException exception) {
return createInputFatalStatus(element, IJavaScriptRefactorings.ENCAPSULATE_FIELD);
}
}
} else
return RefactoringStatus.createFatalErrorStatus(Messages.format(RefactoringCoreMessages.InitializableRefactoring_argument_not_exist, JDTRefactoringDescriptor.ATTRIBUTE_INPUT));
String name= extended.getAttribute(ATTRIBUTE_GETTER);
if (name != null && !"".equals(name)) //$NON-NLS-1$
fGetterName= name;
else
return RefactoringStatus.createFatalErrorStatus(Messages.format(RefactoringCoreMessages.InitializableRefactoring_argument_not_exist, ATTRIBUTE_GETTER));
name= extended.getAttribute(ATTRIBUTE_SETTER);
if (name != null && !"".equals(name)) //$NON-NLS-1$
fSetterName= name;
else
return RefactoringStatus.createFatalErrorStatus(Messages.format(RefactoringCoreMessages.InitializableRefactoring_argument_not_exist, ATTRIBUTE_SETTER));
final String encapsulate= extended.getAttribute(ATTRIBUTE_DECLARING);
if (encapsulate != null) {
fEncapsulateDeclaringClass= Boolean.valueOf(encapsulate).booleanValue();
} else
return RefactoringStatus.createFatalErrorStatus(Messages.format(RefactoringCoreMessages.InitializableRefactoring_argument_not_exist, ATTRIBUTE_DECLARING));
final String matches= extended.getAttribute(ATTRIBUTE_COMMENTS);
if (matches != null) {
fGenerateJavadoc= Boolean.valueOf(matches).booleanValue();
} else
return RefactoringStatus.createFatalErrorStatus(Messages.format(RefactoringCoreMessages.InitializableRefactoring_argument_not_exist, ATTRIBUTE_COMMENTS));
final String visibility= extended.getAttribute(ATTRIBUTE_VISIBILITY);
if (visibility != null && !"".equals(visibility)) {//$NON-NLS-1$
int flag= 0;
try {
flag= Integer.parseInt(visibility);
} catch (NumberFormatException exception) {
return RefactoringStatus.createFatalErrorStatus(Messages.format(RefactoringCoreMessages.InitializableRefactoring_argument_not_exist, ATTRIBUTE_VISIBILITY));
}
fVisibility= flag;
}
final String insertion= extended.getAttribute(ATTRIBUTE_INSERTION);
if (insertion != null && !"".equals(insertion)) {//$NON-NLS-1$
int index= 0;
try {
index= Integer.parseInt(insertion);
} catch (NumberFormatException exception) {
return RefactoringStatus.createFatalErrorStatus(Messages.format(RefactoringCoreMessages.InitializableRefactoring_argument_not_exist, ATTRIBUTE_INSERTION));
}
fInsertionIndex= index;
}
} else
return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InitializableRefactoring_inacceptable_arguments);
return new RefactoringStatus();
}
public boolean isUsingLocalGetter() {
IType declaringType= fField.getDeclaringType();
return checkName(fGetterName, fUsedReadNames, declaringType);
}
public boolean isUsingLocalSetter() {
IType declaringType= fField.getDeclaringType();
return checkName(fSetterName, fUsedModifyNames, declaringType);
}
private static boolean checkName(String name, List usedNames, IType type) {
for (Iterator iter= usedNames.iterator(); iter.hasNext(); ) {
IFunctionBinding method= (IFunctionBinding)iter.next();
String selector= method.getName();
if (selector.equals(name)) {
return true;
}
}
return false;
}
private boolean isIgnorableProblem(IProblem problem) {
if (problem.getID() == IProblem.NotVisibleField)
return true;
return false;
}
public boolean isConsiderVisibility() {
return fConsiderVisibility;
}
public void setConsiderVisibility(boolean considerVisibility) {
fConsiderVisibility= considerVisibility;
}
}