public static PsiType getType(@NotNull PsiClassObjectAccessExpression classAccessExpression) {
GlobalSearchScope resolveScope = classAccessExpression.getResolveScope();
PsiManager manager = classAccessExpression.getManager();
final PsiClass classClass =
JavaPsiFacade.getInstance(manager.getProject()).findClass("java.lang.Class", resolveScope);
if (classClass == null) {
return new PsiClassReferenceType(
new LightClassReference(manager, "Class", "java.lang.Class", resolveScope), null);
}
if (!PsiUtil.isLanguageLevel5OrHigher(classAccessExpression)) {
// Raw java.lang.Class
return JavaPsiFacade.getInstance(manager.getProject())
.getElementFactory()
.createType(classClass);
}
PsiSubstitutor substitutor = PsiSubstitutor.EMPTY;
PsiType operandType = classAccessExpression.getOperand().getType();
if (operandType instanceof PsiPrimitiveType && !PsiType.NULL.equals(operandType)) {
if (PsiType.VOID.equals(operandType)) {
operandType =
JavaPsiFacade.getInstance(manager.getProject())
.getElementFactory()
.createTypeByFQClassName("java.lang.Void", classAccessExpression.getResolveScope());
} else {
operandType = ((PsiPrimitiveType) operandType).getBoxedType(classAccessExpression);
}
}
final PsiTypeParameter[] typeParameters = classClass.getTypeParameters();
if (typeParameters.length == 1) {
substitutor = substitutor.put(typeParameters[0], operandType);
}
return new PsiImmediateClassType(classClass, substitutor);
}
@Override
protected final void doFix(Project project, ProblemDescriptor descriptor)
throws IncorrectOperationException {
final PsiElement element = descriptor.getPsiElement();
final PsiTypeElement castTypeElement;
final PsiReferenceExpression reference;
if (element instanceof PsiTypeCastExpression) {
final PsiTypeCastExpression typeCastExpression = (PsiTypeCastExpression) element;
castTypeElement = typeCastExpression.getCastType();
final PsiExpression operand = typeCastExpression.getOperand();
if (!(operand instanceof PsiReferenceExpression)) {
return;
}
reference = (PsiReferenceExpression) operand;
} else if (element instanceof PsiMethodCallExpression) {
final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression) element;
final PsiReferenceExpression methodExpression = methodCallExpression.getMethodExpression();
final PsiExpression qualifier = methodExpression.getQualifierExpression();
if (!(qualifier instanceof PsiClassObjectAccessExpression)) {
return;
}
final PsiClassObjectAccessExpression classObjectAccessExpression =
(PsiClassObjectAccessExpression) qualifier;
castTypeElement = classObjectAccessExpression.getOperand();
final PsiExpressionList argumentList = methodCallExpression.getArgumentList();
final PsiExpression[] arguments = argumentList.getExpressions();
if (arguments.length != 1) {
return;
}
final PsiExpression argument = arguments[0];
if (!(argument instanceof PsiReferenceExpression)) {
return;
}
reference = (PsiReferenceExpression) argument;
} else {
return;
}
if (castTypeElement == null) {
return;
}
final PsiInstanceOfExpression conflictingInstanceof =
InstanceOfUtils.getConflictingInstanceof(castTypeElement.getType(), reference, element);
final PsiTypeElement instanceofTypeElement = conflictingInstanceof.getCheckType();
if (instanceofTypeElement == null) {
return;
}
final PsiElement newElement = replace(castTypeElement, instanceofTypeElement);
final JavaCodeStyleManager codeStyleManager = JavaCodeStyleManager.getInstance(project);
codeStyleManager.shortenClassReferences(newElement);
}
@Override
public void visitMethodCallExpression(PsiMethodCallExpression expression) {
super.visitMethodCallExpression(expression);
final PsiReferenceExpression methodExpression = expression.getMethodExpression();
final String methodName = methodExpression.getReferenceName();
if (!"cast".equals(methodName)) {
return;
}
final PsiMethod method = expression.resolveMethod();
if (method == null) {
return;
}
final PsiClass containingClass = method.getContainingClass();
if (containingClass == null) {
return;
}
final String qualifiedName = containingClass.getQualifiedName();
if (!"java.lang.Class".equals(qualifiedName)) {
return;
}
final PsiExpression qualifier = methodExpression.getQualifierExpression();
if (!(qualifier instanceof PsiClassObjectAccessExpression)) {
return;
}
final PsiClassObjectAccessExpression classObjectAccessExpression =
(PsiClassObjectAccessExpression) qualifier;
final PsiTypeElement operand = classObjectAccessExpression.getOperand();
final PsiType castType = operand.getType();
if (!(castType instanceof PsiClassType)) {
return;
}
final PsiExpressionList argumentList = expression.getArgumentList();
final PsiExpression[] arguments = argumentList.getExpressions();
if (arguments.length != 1) {
return;
}
final PsiExpression argument = arguments[0];
if (!(argument instanceof PsiReferenceExpression)) {
return;
}
final PsiReferenceExpression referenceExpression = (PsiReferenceExpression) argument;
final PsiInstanceOfExpression conflictingInstanceof =
InstanceOfUtils.getConflictingInstanceof(castType, referenceExpression, expression);
if (conflictingInstanceof == null) {
return;
}
final PsiTypeElement instanceofTypeElement = conflictingInstanceof.getCheckType();
registerError(expression, referenceExpression, operand, instanceofTypeElement);
}
private static boolean classObjectAccessExpressionsAreEquivalent(
PsiClassObjectAccessExpression expression1, PsiClassObjectAccessExpression expression2) {
final PsiTypeElement operand1 = expression1.getOperand();
final PsiTypeElement operand2 = expression2.getOperand();
return typeElementsAreEquivalent(operand1, operand2);
}
@Override
public void visitClassObjectAccessExpression(PsiClassObjectAccessExpression expression) {
super.visitClassObjectAccessExpression(expression);
PsiElement parent = expression.getParent();
if (parent instanceof PsiReferenceExpression) {
final PsiReferenceExpression referenceExpression = (PsiReferenceExpression) parent;
if (!expression.equals(referenceExpression.getQualifierExpression())) {
return;
}
@NonNls final String name = referenceExpression.getReferenceName();
if (!"getName".equals(name)) {
return;
}
final PsiElement grandParent = referenceExpression.getParent();
if (!(grandParent instanceof PsiMethodCallExpression)) {
return;
}
final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression) grandParent;
final PsiExpressionList list = methodCallExpression.getArgumentList();
if (list.getExpressions().length != 0) {
return;
}
parent = methodCallExpression.getParent();
}
if (!(parent instanceof PsiExpressionList)) {
return;
}
final PsiElement grandParent = parent.getParent();
if (!(grandParent instanceof PsiMethodCallExpression)) {
return;
}
final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression) grandParent;
final PsiExpressionList argumentList = methodCallExpression.getArgumentList();
final PsiExpression[] expressions = argumentList.getExpressions();
if (expressions.length != 1) {
return;
}
final PsiClass containingClass = PsiTreeUtil.getParentOfType(expression, PsiClass.class);
if (containingClass == null) {
return;
}
final String containingClassName = containingClass.getName();
if (containingClassName == null) {
return;
}
final PsiMethod method = methodCallExpression.resolveMethod();
if (method == null) {
return;
}
final PsiClass aClass = method.getContainingClass();
if (aClass == null) {
return;
}
final String className = aClass.getQualifiedName();
final int index = loggerFactoryClassNames.indexOf(className);
if (index < 0) {
return;
}
final PsiReferenceExpression methodExpression = methodCallExpression.getMethodExpression();
final String referenceName = methodExpression.getReferenceName();
final String loggerFactoryMethodName = loggerFactoryMethodNames.get(index);
if (!loggerFactoryMethodName.equals(referenceName)) {
return;
}
final PsiTypeElement operand = expression.getOperand();
final PsiType type = operand.getType();
if (!(type instanceof PsiClassType)) {
return;
}
final PsiClassType classType = (PsiClassType) type;
final PsiClass initializerClass = classType.resolve();
if (initializerClass == null) {
return;
}
if (containingClass.equals(initializerClass)) {
return;
}
registerError(expression, containingClassName);
}