@NotNull
protected UsageInfo[] findUsages() {
final PsiManager manager = myMethod.getManager();
final GlobalSearchScope searchScope = GlobalSearchScope.allScope(manager.getProject());
final List<UsageInfo> usages = new ArrayList<UsageInfo>();
for (PsiReference ref : ReferencesSearch.search(myMethod, searchScope, false)) {
final PsiElement element = ref.getElement();
if (element instanceof PsiReferenceExpression) {
boolean isInternal = PsiTreeUtil.isAncestor(myMethod, element, true);
usages.add(new MethodCallUsageInfo((PsiReferenceExpression) element, isInternal));
} else if (element instanceof PsiDocTagValue) {
usages.add(new JavadocUsageInfo(((PsiDocTagValue) element)));
} else {
throw new UnknownReferenceTypeException(element.getLanguage());
}
}
if (myTargetClass.isInterface()) {
addInheritorUsages(myTargetClass, searchScope, usages);
}
final PsiCodeBlock body = myMethod.getBody();
if (body != null) {
body.accept(
new JavaRecursiveElementWalkingVisitor() {
@Override
public void visitNewExpression(PsiNewExpression expression) {
if (MoveInstanceMembersUtil.getClassReferencedByThis(expression) != null) {
usages.add(new InternalUsageInfo(expression));
}
super.visitNewExpression(expression);
}
@Override
public void visitReferenceExpression(PsiReferenceExpression expression) {
if (MoveInstanceMembersUtil.getClassReferencedByThis(expression) != null) {
usages.add(new InternalUsageInfo(expression));
} else if (!expression.isQualified()) {
final PsiElement resolved = expression.resolve();
if (myTargetVariable.equals(resolved)) {
usages.add(new InternalUsageInfo(expression));
}
}
super.visitReferenceExpression(expression);
}
});
}
return usages.toArray(new UsageInfo[usages.size()]);
}
private static void adjustPossibleEmptyTryStatement(PsiTryStatement tryStatement)
throws IncorrectOperationException {
PsiCodeBlock tryBlock = tryStatement.getTryBlock();
if (tryBlock != null) {
if (tryStatement.getCatchSections().length == 0 && tryStatement.getFinallyBlock() == null) {
PsiElement firstBodyElement = tryBlock.getFirstBodyElement();
if (firstBodyElement != null) {
tryStatement
.getParent()
.addRangeAfter(firstBodyElement, tryBlock.getLastBodyElement(), tryStatement);
}
tryStatement.delete();
}
}
}
private static void addSuperCall(
JavaChangeInfo changeInfo, PsiMethod constructor, PsiMethod callee, final UsageInfo[] usages)
throws IncorrectOperationException {
final PsiElementFactory factory = JavaPsiFacade.getElementFactory(constructor.getProject());
PsiExpressionStatement superCall =
(PsiExpressionStatement) factory.createStatementFromText("super();", constructor);
PsiCodeBlock body = constructor.getBody();
assert body != null;
PsiStatement[] statements = body.getStatements();
if (statements.length > 0) {
superCall = (PsiExpressionStatement) body.addBefore(superCall, statements[0]);
} else {
superCall = (PsiExpressionStatement) body.add(superCall);
}
PsiMethodCallExpression callExpression = (PsiMethodCallExpression) superCall.getExpression();
final PsiClass aClass = constructor.getContainingClass();
final PsiClass baseClass = changeInfo.getMethod().getContainingClass();
final PsiSubstitutor substitutor =
TypeConversionUtil.getSuperClassSubstitutor(baseClass, aClass, PsiSubstitutor.EMPTY);
processMethodUsage(
callExpression.getMethodExpression(), changeInfo, true, false, callee, substitutor, usages);
}
protected void performRefactoring(UsageInfo[] usages) {
try {
PsiElementFactory factory =
JavaPsiFacade.getInstance(myManager.getProject()).getElementFactory();
PsiType initializerType =
getInitializerType(myForcedType, myParameterInitializer, myLocalVariable);
setForcedType(initializerType);
// Converting myParameterInitializer
if (myParameterInitializer == null) {
LOG.assertTrue(myLocalVariable != null);
myParameterInitializer =
factory.createExpressionFromText(myLocalVariable.getName(), myLocalVariable);
} else if (myParameterInitializer instanceof PsiArrayInitializerExpression) {
final PsiExpression newExprArrayInitializer =
RefactoringUtil.createNewExpressionFromArrayInitializer(
(PsiArrayInitializerExpression) myParameterInitializer, initializerType);
myParameterInitializer =
(PsiExpression) myParameterInitializer.replace(newExprArrayInitializer);
}
myInitializerWrapper = new JavaExpressionWrapper(myParameterInitializer);
// Changing external occurences (the tricky part)
IntroduceParameterUtil.processUsages(usages, this);
if (myGenerateDelegate) {
generateDelegate(myMethodToReplaceIn);
if (myMethodToReplaceIn != myMethodToSearchFor) {
final PsiMethod method = generateDelegate(myMethodToSearchFor);
if (method.getContainingClass().isInterface()) {
final PsiCodeBlock block = method.getBody();
if (block != null) {
block.delete();
}
}
}
}
// Changing signature of initial method
// (signature of myMethodToReplaceIn will be either changed now or have already been changed)
LOG.assertTrue(initializerType.isValid());
final FieldConflictsResolver fieldConflictsResolver =
new FieldConflictsResolver(myParameterName, myMethodToReplaceIn.getBody());
IntroduceParameterUtil.changeMethodSignatureAndResolveFieldConflicts(
new UsageInfo(myMethodToReplaceIn), usages, this);
if (myMethodToSearchFor != myMethodToReplaceIn) {
IntroduceParameterUtil.changeMethodSignatureAndResolveFieldConflicts(
new UsageInfo(myMethodToSearchFor), usages, this);
}
ChangeContextUtil.clearContextInfo(myParameterInitializer);
// Replacing expression occurrences
for (UsageInfo usage : usages) {
if (usage instanceof ChangedMethodCallInfo) {
PsiElement element = usage.getElement();
processChangedMethodCall(element);
} else if (usage instanceof InternalUsageInfo) {
PsiElement element = usage.getElement();
if (element instanceof PsiExpression) {
element = RefactoringUtil.outermostParenthesizedExpression((PsiExpression) element);
}
if (element != null) {
if (element.getParent() instanceof PsiExpressionStatement) {
element.getParent().delete();
} else {
PsiExpression newExpr = factory.createExpressionFromText(myParameterName, element);
IntroduceVariableBase.replace((PsiExpression) element, newExpr, myProject);
}
}
}
}
if (myLocalVariable != null && myRemoveLocalVariable) {
myLocalVariable.normalizeDeclaration();
myLocalVariable.getParent().delete();
}
fieldConflictsResolver.fix();
} catch (IncorrectOperationException ex) {
LOG.error(ex);
}
}
private PsiMethod createMethodToAdd() {
ChangeContextUtil.encodeContextInfo(myMethod, true);
try {
final PsiManager manager = myMethod.getManager();
final PsiElementFactory factory =
JavaPsiFacade.getInstance(manager.getProject()).getElementFactory();
// correct internal references
final PsiCodeBlock body = myMethod.getBody();
if (body != null) {
final Map<PsiElement, PsiElement> replaceMap = new HashMap<PsiElement, PsiElement>();
body.accept(
new JavaRecursiveElementVisitor() {
@Override
public void visitThisExpression(PsiThisExpression expression) {
final PsiClass classReferencedByThis =
MoveInstanceMembersUtil.getClassReferencedByThis(expression);
if (classReferencedByThis != null
&& !PsiTreeUtil.isAncestor(myMethod, classReferencedByThis, false)) {
final PsiElementFactory factory =
JavaPsiFacade.getInstance(myProject).getElementFactory();
String paramName = getParameterNameToCreate(classReferencedByThis);
try {
final PsiExpression refExpression =
factory.createExpressionFromText(paramName, null);
replaceMap.put(expression, refExpression);
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
}
@Override
public void visitReferenceExpression(PsiReferenceExpression expression) {
try {
final PsiExpression qualifier = expression.getQualifierExpression();
final PsiElement resolved = expression.resolve();
if (qualifier instanceof PsiReferenceExpression
&& ((PsiReferenceExpression) qualifier).isReferenceTo(myTargetVariable)) {
if (resolved instanceof PsiField) {
for (PsiParameter parameter : myMethod.getParameterList().getParameters()) {
if (Comparing.strEqual(
parameter.getName(), ((PsiField) resolved).getName())) {
qualifier.replace(factory.createExpressionFromText("this", null));
return;
}
}
}
// Target is a field, replace target.m -> m
qualifier.delete();
return;
}
if (myTargetVariable.equals(resolved)) {
PsiThisExpression thisExpression =
RefactoringChangeUtil.createThisExpression(
manager,
PsiTreeUtil.isAncestor(
myMethod,
PsiTreeUtil.getParentOfType(expression, PsiClass.class),
true)
? myTargetClass
: null);
replaceMap.put(expression, thisExpression);
return;
} else if (myMethod.equals(resolved)) {
} else {
PsiClass classReferencedByThis =
MoveInstanceMembersUtil.getClassReferencedByThis(expression);
if (classReferencedByThis != null) {
final String paramName = getParameterNameToCreate(classReferencedByThis);
if (paramName != null) {
PsiReferenceExpression newQualifier =
(PsiReferenceExpression)
factory.createExpressionFromText(paramName, null);
expression.setQualifierExpression(newQualifier);
return;
}
}
}
super.visitReferenceExpression(expression);
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
@Override
public void visitNewExpression(PsiNewExpression expression) {
try {
final PsiExpression qualifier = expression.getQualifier();
if (qualifier instanceof PsiReferenceExpression
&& ((PsiReferenceExpression) qualifier).isReferenceTo(myTargetVariable)) {
// Target is a field, replace target.new A() -> new A()
qualifier.delete();
} else {
final PsiClass classReferencedByThis =
MoveInstanceMembersUtil.getClassReferencedByThis(expression);
if (classReferencedByThis != null) {
if (qualifier != null) qualifier.delete();
final String paramName = getParameterNameToCreate(classReferencedByThis);
final PsiExpression newExpression =
factory.createExpressionFromText(
paramName + "." + expression.getText(), null);
replaceMap.put(expression, newExpression);
}
}
super.visitNewExpression(expression);
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
@Override
public void visitMethodCallExpression(PsiMethodCallExpression expression) {
correctMethodCall(expression, true);
super.visitMethodCallExpression(expression);
}
});
for (PsiElement element : replaceMap.keySet()) {
final PsiElement replacement = replaceMap.get(element);
element.replace(replacement);
}
}
final PsiMethod methodCopy = getPatternMethod();
final List<PsiParameter> newParameters =
Arrays.asList(methodCopy.getParameterList().getParameters());
RefactoringUtil.fixJavadocsForParams(methodCopy, new HashSet<PsiParameter>(newParameters));
return methodCopy;
} catch (IncorrectOperationException e) {
LOG.error(e);
return myMethod;
}
}