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fix NPE

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This commit is contained in:
Alexey Kudravtsev
2018-08-14 13:56:16 +03:00
parent 3a4aa34c29
commit 36862ed005
1 changed files with 5 additions and 2 deletions
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plugins/InspectionGadgets/src/com/siyeh/ig/style/BoundedWildcardInspection.java
+5 -2
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@@ -31,6 +31,7 @@ import com.intellij.refactoring.changeSignature.JavaChangeSignatureDialog;
import com.intellij.refactoring.changeSignature.ParameterInfoImpl;
import com.intellij.ui.components.JBCheckBox;
import com.intellij.util.ArrayUtil;
import com.intellij.util.ObjectUtils;
import com.intellij.util.containers.ContainerUtil;
import com.siyeh.InspectionGadgetsBundle;
import org.jdom.Element;
@@ -268,8 +269,10 @@ public class BoundedWildcardInspection extends AbstractBaseJavaLocalInspectionTo
PsiField fieldCopy = classCopy.getFields()[fieldIndex];
Collection<PsiReference> refs = ReferencesSearch.search(fieldCopy, new LocalSearchScope(classCopy)).findAll();
Map<PsiMethod, List<PsiReference>> collect =
refs.stream().collect(Collectors.groupingBy(ref -> PsiTreeUtil.getParentOfType(ref.getElement(), PsiMethod.class)));
methodsToErrorCheck = collect.keySet();
refs.stream()
// map null to "method" to filter it out later
.collect(Collectors.groupingBy(ref -> ObjectUtils.notNull(PsiTreeUtil.getParentOfType(ref.getElement(), PsiMethod.class), method)));
methodsToErrorCheck = ContainerUtil.filter(collect.keySet(), k->k != method);
}
else {
methodsToErrorCheck = Collections.singletonList(methodCopyInClass);