private void generateAccessors() {
// generate accessors
myNameToGetter = new HashMap<String, PsiMethod>();
myNameToSetter = new HashMap<String, PsiMethod>();
for (FieldDescriptor fieldDescriptor : myFieldDescriptors) {
final DocCommentPolicy<PsiDocComment> commentPolicy =
new DocCommentPolicy<PsiDocComment>(myDescriptor.getJavadocPolicy());
PsiField field = fieldDescriptor.getField();
final PsiDocComment docComment = field.getDocComment();
if (myDescriptor.isToEncapsulateGet()) {
final PsiMethod prototype = fieldDescriptor.getGetterPrototype();
assert prototype != null;
final PsiMethod getter = addOrChangeAccessor(prototype, myNameToGetter);
if (docComment != null) {
final PsiDocComment getterJavadoc =
(PsiDocComment) getter.addBefore(docComment, getter.getFirstChild());
commentPolicy.processNewJavaDoc(getterJavadoc);
}
}
if (myDescriptor.isToEncapsulateSet() && !field.hasModifierProperty(PsiModifier.FINAL)) {
PsiMethod prototype = fieldDescriptor.getSetterPrototype();
assert prototype != null;
addOrChangeAccessor(prototype, myNameToSetter);
}
if (docComment != null) {
commentPolicy.processOldJavaDoc(docComment);
}
}
}
protected boolean preprocessUsages(Ref<UsageInfo[]> refUsages) {
final MultiMap<PsiElement, String> conflicts = new MultiMap<PsiElement, String>();
checkExistingMethods(conflicts, true);
checkExistingMethods(conflicts, false);
final Collection<PsiClass> classes = ClassInheritorsSearch.search(myClass).findAll();
for (FieldDescriptor fieldDescriptor : myFieldDescriptors) {
final Set<PsiMethod> setters = new HashSet<PsiMethod>();
final Set<PsiMethod> getters = new HashSet<PsiMethod>();
for (PsiClass aClass : classes) {
final PsiMethod getterOverrider =
myDescriptor.isToEncapsulateGet()
? aClass.findMethodBySignature(fieldDescriptor.getGetterPrototype(), false)
: null;
if (getterOverrider != null) {
getters.add(getterOverrider);
}
final PsiMethod setterOverrider =
myDescriptor.isToEncapsulateSet()
? aClass.findMethodBySignature(fieldDescriptor.getSetterPrototype(), false)
: null;
if (setterOverrider != null) {
setters.add(setterOverrider);
}
}
if (!getters.isEmpty() || !setters.isEmpty()) {
final PsiField field = fieldDescriptor.getField();
for (PsiReference reference : ReferencesSearch.search(field)) {
final PsiElement place = reference.getElement();
if (place instanceof PsiReferenceExpression) {
final PsiExpression qualifierExpression =
((PsiReferenceExpression) place).getQualifierExpression();
final PsiClass ancestor;
if (qualifierExpression == null) {
ancestor = PsiTreeUtil.getParentOfType(place, PsiClass.class, false);
} else {
ancestor = PsiUtil.resolveClassInType(qualifierExpression.getType());
}
final boolean isGetter = !PsiUtil.isAccessedForWriting((PsiExpression) place);
for (PsiMethod overridden : isGetter ? getters : setters) {
if (InheritanceUtil.isInheritorOrSelf(myClass, ancestor, true)) {
conflicts.putValue(
overridden,
"There is already a "
+ RefactoringUIUtil.getDescription(overridden, true)
+ " which would hide generated "
+ (isGetter ? "getter" : "setter")
+ " for "
+ place.getText());
break;
}
}
}
}
}
}
return showConflicts(conflicts, refUsages.get());
}
@Nullable
public EncapsulateFieldUsageInfo createUsage(
@NotNull EncapsulateFieldsDescriptor descriptor,
@NotNull FieldDescriptor fieldDescriptor,
@NotNull PsiReference reference) {
if (!(reference instanceof PsiReferenceExpression)) return null;
boolean findSet = descriptor.isToEncapsulateSet();
boolean findGet = descriptor.isToEncapsulateGet();
PsiReferenceExpression ref = (PsiReferenceExpression) reference;
// [Jeka] to avoid recursion in the field's accessors
if (findGet
&& isUsedInExistingAccessor(
descriptor.getTargetClass(), fieldDescriptor.getGetterPrototype(), ref)) return null;
if (findSet
&& isUsedInExistingAccessor(
descriptor.getTargetClass(), fieldDescriptor.getSetterPrototype(), ref)) return null;
if (!findGet) {
if (!PsiUtil.isAccessedForWriting(ref)) return null;
}
if (!findSet || fieldDescriptor.getField().hasModifierProperty(PsiModifier.FINAL)) {
if (!PsiUtil.isAccessedForReading(ref)) return null;
}
if (!descriptor.isToUseAccessorsWhenAccessible()) {
PsiModifierList newModifierList = createNewModifierList(descriptor);
PsiClass accessObjectClass = null;
PsiExpression qualifier = ref.getQualifierExpression();
if (qualifier != null) {
accessObjectClass = (PsiClass) PsiUtil.getAccessObjectClass(qualifier).getElement();
}
final PsiResolveHelper helper =
JavaPsiFacade.getInstance(((PsiReferenceExpression) reference).getProject())
.getResolveHelper();
if (helper.isAccessible(
fieldDescriptor.getField(), newModifierList, ref, accessObjectClass, null)) {
return null;
}
}
return new EncapsulateFieldUsageInfo(ref, fieldDescriptor);
}
private void checkExistingMethods(MultiMap<PsiElement, String> conflicts, boolean isGetter) {
if (isGetter) {
if (!myDescriptor.isToEncapsulateGet()) return;
} else {
if (!myDescriptor.isToEncapsulateSet()) return;
}
for (FieldDescriptor descriptor : myFieldDescriptors) {
PsiMethod prototype =
isGetter ? descriptor.getGetterPrototype() : descriptor.getSetterPrototype();
final PsiType prototypeReturnType = prototype.getReturnType();
PsiMethod existing = myClass.findMethodBySignature(prototype, true);
if (existing != null) {
final PsiType returnType = existing.getReturnType();
if (!RefactoringUtil.equivalentTypes(
prototypeReturnType, returnType, myClass.getManager())) {
final String descr =
PsiFormatUtil.formatMethod(
existing,
PsiSubstitutor.EMPTY,
PsiFormatUtilBase.SHOW_NAME
| PsiFormatUtilBase.SHOW_PARAMETERS
| PsiFormatUtilBase.SHOW_TYPE,
PsiFormatUtilBase.SHOW_TYPE);
String message =
isGetter
? RefactoringBundle.message(
"encapsulate.fields.getter.exists",
CommonRefactoringUtil.htmlEmphasize(descr),
CommonRefactoringUtil.htmlEmphasize(prototype.getName()))
: RefactoringBundle.message(
"encapsulate.fields.setter.exists",
CommonRefactoringUtil.htmlEmphasize(descr),
CommonRefactoringUtil.htmlEmphasize(prototype.getName()));
conflicts.putValue(existing, message);
}
} else {
PsiClass containingClass = myClass.getContainingClass();
while (containingClass != null && existing == null) {
existing = containingClass.findMethodBySignature(prototype, true);
if (existing != null) {
for (PsiReference reference : ReferencesSearch.search(existing)) {
final PsiElement place = reference.getElement();
LOG.assertTrue(place instanceof PsiReferenceExpression);
final PsiExpression qualifierExpression =
((PsiReferenceExpression) place).getQualifierExpression();
final PsiClass inheritor;
if (qualifierExpression == null) {
inheritor = PsiTreeUtil.getParentOfType(place, PsiClass.class, false);
} else {
inheritor = PsiUtil.resolveClassInType(qualifierExpression.getType());
}
if (InheritanceUtil.isInheritorOrSelf(inheritor, myClass, true)) {
conflicts.putValue(
existing,
"There is already a "
+ RefactoringUIUtil.getDescription(existing, true)
+ " which would be hidden by generated "
+ (isGetter ? "getter" : "setter"));
break;
}
}
}
containingClass = containingClass.getContainingClass();
}
}
}
}
public boolean processUsage(
@NotNull EncapsulateFieldUsageInfo usage,
@NotNull EncapsulateFieldsDescriptor descriptor,
PsiMethod setter,
PsiMethod getter) {
final PsiElement element = usage.getElement();
if (!(element instanceof PsiReferenceExpression)) return false;
final FieldDescriptor fieldDescriptor = usage.getFieldDescriptor();
PsiField field = fieldDescriptor.getField();
boolean processGet = descriptor.isToEncapsulateGet();
boolean processSet =
descriptor.isToEncapsulateSet() && !field.hasModifierProperty(PsiModifier.FINAL);
if (!processGet && !processSet) return true;
PsiElementFactory factory =
JavaPsiFacade.getInstance(descriptor.getTargetClass().getProject()).getElementFactory();
try {
final PsiReferenceExpression expr = (PsiReferenceExpression) element;
final PsiElement parent = expr.getParent();
if (parent instanceof PsiAssignmentExpression
&& expr.equals(((PsiAssignmentExpression) parent).getLExpression())) {
PsiAssignmentExpression assignment = (PsiAssignmentExpression) parent;
if (assignment.getRExpression() == null) return true;
PsiJavaToken opSign = assignment.getOperationSign();
IElementType opType = opSign.getTokenType();
if (opType == JavaTokenType.EQ) {
{
if (!processSet) return true;
final PsiExpression setterArgument = assignment.getRExpression();
PsiMethodCallExpression methodCall =
createSetterCall(
fieldDescriptor, setterArgument, expr, descriptor.getTargetClass(), setter);
if (methodCall != null) {
assignment.replace(methodCall);
}
// TODO: check if value is used!!!
}
} else if (opType == JavaTokenType.ASTERISKEQ
|| opType == JavaTokenType.DIVEQ
|| opType == JavaTokenType.PERCEQ
|| opType == JavaTokenType.PLUSEQ
|| opType == JavaTokenType.MINUSEQ
|| opType == JavaTokenType.LTLTEQ
|| opType == JavaTokenType.GTGTEQ
|| opType == JavaTokenType.GTGTGTEQ
|| opType == JavaTokenType.ANDEQ
|| opType == JavaTokenType.OREQ
|| opType == JavaTokenType.XOREQ) {
{
// Q: side effects of qualifier??!
String opName = opSign.getText();
LOG.assertTrue(StringUtil.endsWithChar(opName, '='));
opName = opName.substring(0, opName.length() - 1);
PsiExpression getExpr = expr;
if (processGet) {
final PsiMethodCallExpression getterCall =
createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);
if (getterCall != null) {
getExpr = getterCall;
}
}
@NonNls String text = "a" + opName + "b";
PsiBinaryExpression binExpr =
(PsiBinaryExpression) factory.createExpressionFromText(text, expr);
binExpr.getLOperand().replace(getExpr);
binExpr.getROperand().replace(assignment.getRExpression());
PsiExpression setExpr;
if (processSet) {
setExpr =
createSetterCall(
fieldDescriptor, binExpr, expr, descriptor.getTargetClass(), setter);
} else {
text = "a = b";
PsiAssignmentExpression assignment1 =
(PsiAssignmentExpression) factory.createExpressionFromText(text, null);
assignment1.getLExpression().replace(expr);
assignment1.getRExpression().replace(binExpr);
setExpr = assignment1;
}
assignment.replace(setExpr);
// TODO: check if value is used!!!
}
}
} else if (RefactoringUtil.isPlusPlusOrMinusMinus(parent)) {
IElementType sign;
if (parent instanceof PsiPrefixExpression) {
sign = ((PsiPrefixExpression) parent).getOperationTokenType();
} else {
sign = ((PsiPostfixExpression) parent).getOperationTokenType();
}
PsiExpression getExpr = expr;
if (processGet) {
final PsiMethodCallExpression getterCall =
createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);
if (getterCall != null) {
getExpr = getterCall;
}
}
@NonNls String text;
if (sign == JavaTokenType.PLUSPLUS) {
text = "a+1";
} else {
text = "a-1";
}
PsiBinaryExpression binExpr =
(PsiBinaryExpression) factory.createExpressionFromText(text, null);
binExpr.getLOperand().replace(getExpr);
PsiExpression setExpr;
if (processSet) {
setExpr =
createSetterCall(fieldDescriptor, binExpr, expr, descriptor.getTargetClass(), setter);
} else {
text = "a = b";
PsiAssignmentExpression assignment =
(PsiAssignmentExpression) factory.createExpressionFromText(text, null);
assignment.getLExpression().replace(expr);
assignment.getRExpression().replace(binExpr);
setExpr = assignment;
}
parent.replace(setExpr);
} else {
if (!processGet) return true;
PsiMethodCallExpression methodCall =
createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);
if (methodCall != null) {
expr.replace(methodCall);
}
}
} catch (IncorrectOperationException e) {
LOG.error(e);
}
return true;
}