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assignment expr: left op must be a variable/array access possibly wrapped in parenthesis

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GitOrigin-RevId: 188dea30e5fb680b608cfa4afd1d3a0e6d8759c7
This commit is contained in:
Anna Kozlova
2019-05-06 11:02:53 +03:00
committed by intellij-monorepo-bot
parent 4b2770ab58
commit c4eb244441
1 changed files with 9 additions and 1 deletions
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java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/PsiAssignmentExpressionImpl.java
+9 -1
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@@ -24,6 +24,7 @@ import com.intellij.psi.impl.source.tree.JavaElementType;
import com.intellij.psi.tree.ChildRoleBase;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.TokenSet;
import com.intellij.psi.util.PsiUtil;
import org.jetbrains.annotations.NotNull;
public class PsiAssignmentExpressionImpl extends ExpressionPsiElement implements PsiAssignmentExpression {
@@ -58,7 +59,14 @@ public class PsiAssignmentExpressionImpl extends ExpressionPsiElement implements
@Override
public PsiType getType() {
return getLExpression().getType();
//15.26.1 left side must be variable/array access probably wrapped in parenthesis, otherwise it's an invalid expression
//because assignment expression itself is not a poly expression, its type may be calculated at any time
//thus it's important to ensure that type of left side is not calculated for invalid expression, e.g. bar() = ""
PsiExpression lExpression = PsiUtil.deparenthesizeExpression(getLExpression());
if (lExpression instanceof PsiReferenceExpression || lExpression instanceof PsiArrayAccessExpression) {
return lExpression.getType();
}
return null;
}
@Override