private static void processMethodUsage(
PsiElement ref,
JavaChangeInfo changeInfo,
boolean toChangeArguments,
boolean toCatchExceptions,
PsiMethod callee,
PsiSubstitutor subsitutor,
final UsageInfo[] usages)
throws IncorrectOperationException {
if (changeInfo.isNameChanged()) {
if (ref instanceof PsiJavaCodeReferenceElement) {
PsiElement last = ((PsiJavaCodeReferenceElement) ref).getReferenceNameElement();
if (last instanceof PsiIdentifier && last.getText().equals(changeInfo.getOldName())) {
last.replace(changeInfo.getNewNameIdentifier());
}
}
}
final PsiMethod caller = RefactoringUtil.getEnclosingMethod(ref);
if (toChangeArguments) {
final PsiExpressionList list = RefactoringUtil.getArgumentListByMethodReference(ref);
LOG.assertTrue(list != null);
boolean toInsertDefaultValue = needDefaultValue(changeInfo, caller);
if (toInsertDefaultValue && ref instanceof PsiReferenceExpression) {
final PsiExpression qualifierExpression =
((PsiReferenceExpression) ref).getQualifierExpression();
if (qualifierExpression instanceof PsiSuperExpression
&& callerSignatureIsAboutToChangeToo(caller, usages)) {
toInsertDefaultValue = false;
}
}
fixActualArgumentsList(list, changeInfo, toInsertDefaultValue, subsitutor);
}
if (toCatchExceptions) {
if (!(ref instanceof PsiReferenceExpression
&& ((PsiReferenceExpression) ref).getQualifierExpression()
instanceof PsiSuperExpression)) {
if (needToCatchExceptions(changeInfo, caller)) {
PsiClassType[] newExceptions =
callee != null
? getCalleeChangedExceptionInfo(callee)
: getPrimaryChangedExceptionInfo(changeInfo);
fixExceptions(ref, newExceptions);
}
}
}
}
protected boolean preprocessUsages(Ref<UsageInfo[]> refUsages) {
final UsageInfo[] usages = refUsages.get();
MultiMap<PsiElement, String> conflicts = new MultiMap<PsiElement, String>();
final Set<PsiMember> members = new HashSet<PsiMember>();
members.add(myMethod);
if (myTargetVariable instanceof PsiField) members.add((PsiMember) myTargetVariable);
if (!myTargetClass.isInterface()) {
RefactoringConflictsUtil.analyzeAccessibilityConflicts(
members, myTargetClass, conflicts, myNewVisibility);
} else {
for (final UsageInfo usage : usages) {
if (usage instanceof InheritorUsageInfo) {
RefactoringConflictsUtil.analyzeAccessibilityConflicts(
members, ((InheritorUsageInfo) usage).getInheritor(), conflicts, myNewVisibility);
}
}
}
if (myTargetVariable instanceof PsiParameter) {
PsiParameter parameter = (PsiParameter) myTargetVariable;
for (final UsageInfo usageInfo : usages) {
if (usageInfo instanceof MethodCallUsageInfo) {
final PsiElement methodCall = ((MethodCallUsageInfo) usageInfo).getMethodCallExpression();
if (methodCall instanceof PsiMethodCallExpression) {
final PsiExpression[] expressions =
((PsiMethodCallExpression) methodCall).getArgumentList().getExpressions();
final int index = myMethod.getParameterList().getParameterIndex(parameter);
if (index < expressions.length) {
PsiExpression instanceValue = expressions[index];
instanceValue = RefactoringUtil.unparenthesizeExpression(instanceValue);
if (instanceValue instanceof PsiLiteralExpression
&& ((PsiLiteralExpression) instanceValue).getValue() == null) {
String message =
RefactoringBundle.message(
"0.contains.call.with.null.argument.for.parameter.1",
RefactoringUIUtil.getDescription(
ConflictsUtil.getContainer(methodCall), true),
CommonRefactoringUtil.htmlEmphasize(parameter.getName()));
conflicts.putValue(instanceValue, message);
}
}
} else if (methodCall instanceof PsiMethodReferenceExpression) {
conflicts.putValue(methodCall, "Method reference would be broken after move");
}
}
}
}
try {
ConflictsUtil.checkMethodConflicts(myTargetClass, myMethod, getPatternMethod(), conflicts);
} catch (IncorrectOperationException e) {
}
return showConflicts(conflicts, usages);
}
@Override
public boolean setupDefaultValues(
ChangeInfo changeInfo, Ref<UsageInfo[]> refUsages, Project project) {
if (!(changeInfo instanceof JavaChangeInfo)) return true;
for (UsageInfo usageInfo : refUsages.get()) {
if (usageInfo instanceof MethodCallUsageInfo) {
MethodCallUsageInfo methodCallUsageInfo = (MethodCallUsageInfo) usageInfo;
if (methodCallUsageInfo.isToChangeArguments()) {
final PsiElement element = methodCallUsageInfo.getElement();
if (element == null) continue;
final PsiMethod caller = RefactoringUtil.getEnclosingMethod(element);
final boolean needDefaultValue = needDefaultValue(changeInfo, caller);
if (needDefaultValue
&& (caller == null
|| !MethodSignatureUtil.isSuperMethod(
methodCallUsageInfo.getReferencedMethod(), caller))) {
final ParameterInfo[] parameters = changeInfo.getNewParameters();
for (ParameterInfo parameter : parameters) {
final String defaultValue = parameter.getDefaultValue();
if (defaultValue == null && parameter.getOldIndex() == -1) {
((ParameterInfoImpl) parameter).setDefaultValue("");
if (!ApplicationManager.getApplication().isUnitTestMode()) {
final PsiType type =
((ParameterInfoImpl) parameter)
.getTypeWrapper()
.getType(element, element.getManager());
final DefaultValueChooser chooser =
new DefaultValueChooser(
project, parameter.getName(), PsiTypesUtil.getDefaultValueOfType(type));
chooser.show();
if (chooser.isOK()) {
if (chooser.feelLucky()) {
parameter.setUseAnySingleVariable(true);
} else {
((ParameterInfoImpl) parameter).setDefaultValue(chooser.getDefaultValue());
}
} else {
return false;
}
}
}
}
}
}
}
}
return true;
}
private static void fixJavadocsForChangedMethod(
PsiMethod method, JavaChangeInfo changeInfo, int newParamsLength)
throws IncorrectOperationException {
final PsiParameter[] parameters = method.getParameterList().getParameters();
final JavaParameterInfo[] newParms = changeInfo.getNewParameters();
LOG.assertTrue(parameters.length <= newParamsLength);
final Set<PsiParameter> newParameters = new HashSet<PsiParameter>();
final String[] oldParameterNames = changeInfo.getOldParameterNames();
for (int i = 0; i < newParamsLength; i++) {
JavaParameterInfo newParm = newParms[i];
if (newParm.getOldIndex() < 0
|| !newParm.getName().equals(oldParameterNames[newParm.getOldIndex()])) {
newParameters.add(parameters[i]);
}
}
RefactoringUtil.fixJavadocsForParams(method, newParameters);
}
static PsiType getInitializerType(
PsiType forcedType, PsiExpression parameterInitializer, PsiLocalVariable localVariable) {
final PsiType initializerType;
if (forcedType == null) {
if (parameterInitializer == null) {
if (localVariable != null) {
initializerType = localVariable.getType();
} else {
LOG.assertTrue(false);
initializerType = null;
}
} else {
if (localVariable == null) {
initializerType =
RefactoringUtil.getTypeByExpressionWithExpectedType(parameterInitializer);
} else {
initializerType = localVariable.getType();
}
}
} else {
initializerType = forcedType;
}
return initializerType;
}
private static void processPrimaryMethod(
JavaChangeInfo changeInfo, PsiMethod method, PsiMethod baseMethod, boolean isOriginal)
throws IncorrectOperationException {
PsiElementFactory factory = JavaPsiFacade.getInstance(method.getProject()).getElementFactory();
if (changeInfo.isVisibilityChanged()) {
PsiModifierList modifierList = method.getModifierList();
final String highestVisibility =
isOriginal
? changeInfo.getNewVisibility()
: VisibilityUtil.getHighestVisibility(
changeInfo.getNewVisibility(),
VisibilityUtil.getVisibilityModifier(modifierList));
VisibilityUtil.setVisibility(modifierList, highestVisibility);
}
if (changeInfo.isNameChanged()) {
String newName =
baseMethod == null
? changeInfo.getNewName()
: RefactoringUtil.suggestNewOverriderName(
method.getName(), baseMethod.getName(), changeInfo.getNewName());
if (newName != null && !newName.equals(method.getName())) {
final PsiIdentifier nameId = method.getNameIdentifier();
assert nameId != null;
nameId.replace(
JavaPsiFacade.getInstance(method.getProject())
.getElementFactory()
.createIdentifier(newName));
}
}
final PsiSubstitutor substitutor =
baseMethod == null
? PsiSubstitutor.EMPTY
: ChangeSignatureProcessor.calculateSubstitutor(method, baseMethod);
if (changeInfo.isReturnTypeChanged()) {
PsiType newTypeElement =
changeInfo
.getNewReturnType()
.getType(changeInfo.getMethod().getParameterList(), method.getManager());
final PsiType returnType = substitutor.substitute(newTypeElement);
// don't modify return type for non-Java overriders (EJB)
if (method.getName().equals(changeInfo.getNewName())) {
final PsiTypeElement typeElement = method.getReturnTypeElement();
if (typeElement != null) {
typeElement.replace(factory.createTypeElement(returnType));
}
}
}
PsiParameterList list = method.getParameterList();
PsiParameter[] parameters = list.getParameters();
final JavaParameterInfo[] parameterInfos = changeInfo.getNewParameters();
final int delta =
baseMethod != null
? baseMethod.getParameterList().getParametersCount()
- method.getParameterList().getParametersCount()
: 0;
PsiParameter[] newParms = new PsiParameter[Math.max(parameterInfos.length - delta, 0)];
final String[] oldParameterNames = changeInfo.getOldParameterNames();
final String[] oldParameterTypes = changeInfo.getOldParameterTypes();
for (int i = 0; i < newParms.length; i++) {
JavaParameterInfo info = parameterInfos[i];
int index = info.getOldIndex();
if (index >= 0) {
PsiParameter parameter = parameters[index];
newParms[i] = parameter;
String oldName = oldParameterNames[index];
if (!oldName.equals(info.getName()) && oldName.equals(parameter.getName())) {
PsiIdentifier newIdentifier = factory.createIdentifier(info.getName());
parameter.getNameIdentifier().replace(newIdentifier);
}
String oldType = oldParameterTypes[index];
if (!oldType.equals(info.getTypeText())) {
parameter.normalizeDeclaration();
PsiType newType =
substitutor.substitute(
info.createType(changeInfo.getMethod().getParameterList(), method.getManager()));
parameter.getTypeElement().replace(factory.createTypeElement(newType));
}
} else {
newParms[i] = createNewParameter(changeInfo, info, substitutor);
}
}
resolveParameterVsFieldsConflicts(newParms, method, list, changeInfo.toRemoveParm());
fixJavadocsForChangedMethod(method, changeInfo, newParms.length);
if (changeInfo.isExceptionSetOrOrderChanged()) {
final PsiClassType[] newExceptions = getPrimaryChangedExceptionInfo(changeInfo);
fixPrimaryThrowsLists(method, newExceptions);
}
}
@Nullable
private static PsiExpression createDefaultValue(
JavaChangeInfo changeInfo,
final PsiElementFactory factory,
final JavaParameterInfo info,
final PsiExpressionList list)
throws IncorrectOperationException {
if (info.isUseAnySingleVariable()) {
final PsiResolveHelper resolveHelper =
JavaPsiFacade.getInstance(list.getProject()).getResolveHelper();
final PsiType type = info.getTypeWrapper().getType(changeInfo.getMethod(), list.getManager());
final VariablesProcessor processor =
new VariablesProcessor(false) {
protected boolean check(PsiVariable var, ResolveState state) {
if (var instanceof PsiField
&& !resolveHelper.isAccessible((PsiField) var, list, null)) return false;
if (var instanceof PsiLocalVariable
&& list.getTextRange().getStartOffset() <= var.getTextRange().getStartOffset())
return false;
if (PsiTreeUtil.isAncestor(var, list, false)) return false;
final PsiType varType = state.get(PsiSubstitutor.KEY).substitute(var.getType());
return type.isAssignableFrom(varType);
}
public boolean execute(PsiElement pe, ResolveState state) {
super.execute(pe, state);
return size() < 2;
}
};
PsiScopesUtil.treeWalkUp(processor, list, null);
if (processor.size() == 1) {
final PsiVariable result = processor.getResult(0);
return factory.createExpressionFromText(result.getName(), list);
}
if (processor.size() == 0) {
final PsiClass parentClass = PsiTreeUtil.getParentOfType(list, PsiClass.class);
if (parentClass != null) {
PsiClass containingClass = parentClass;
final Set<PsiClass> containingClasses = new HashSet<PsiClass>();
while (containingClass != null) {
if (type.isAssignableFrom(factory.createType(containingClass, PsiSubstitutor.EMPTY))) {
containingClasses.add(containingClass);
}
containingClass = PsiTreeUtil.getParentOfType(containingClass, PsiClass.class);
}
if (containingClasses.size() == 1) {
return RefactoringUtil.createThisExpression(
parentClass.getManager(),
containingClasses.contains(parentClass)
? null
: containingClasses.iterator().next());
}
}
}
}
final PsiCallExpression callExpression =
PsiTreeUtil.getParentOfType(list, PsiCallExpression.class);
final String defaultValue = info.getDefaultValue();
return callExpression != null
? info.getValue(callExpression)
: defaultValue.length() > 0 ? factory.createExpressionFromText(defaultValue, list) : null;
}
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;
}
}