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NullnessUtil#getExpressionNullness: support assignment expression

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This commit is contained in:
Tagir Valeev
2017-07-21 17:13:51 +07:00
parent 92528456af
commit f290cffefc
1 changed files with 7 additions and 0 deletions
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java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/NullnessUtil.java
+7
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@@ -148,6 +148,13 @@ public class NullnessUtil {
PsiElement target = ((PsiReferenceExpression)expression).resolve();
return DfaPsiUtil.getElementNullability(expression.getType(), (PsiModifierListOwner)target);
}
if (expression instanceof PsiAssignmentExpression) {
PsiAssignmentExpression assignment = (PsiAssignmentExpression)expression;
if(assignment.getOperationTokenType().equals(JavaTokenType.EQ)) {
return getExpressionNullness(assignment.getRExpression());
}
return Nullness.NOT_NULL;
}
if (expression instanceof PsiMethodCallExpression) {
PsiMethod method = ((PsiMethodCallExpression)expression).resolveMethod();
return method != null ? DfaPsiUtil.getElementNullability(expression.getType(), method) : Nullness.UNKNOWN;