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CommonDataflow#getExpressionRange contract

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Tagir Valeev
2019-03-19 15:02:37 +07:00
parent 9fd419437c
commit 3e401e1a95
1 changed files with 2 additions and 0 deletions
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java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/CommonDataflow.java
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@@ -297,8 +297,10 @@ public class CommonDataflow {
* @param expression expression to get its range
* @return long range set
*/
@Contract("null -> null")
@Nullable
public static LongRangeSet getExpressionRange(@Nullable PsiExpression expression) {
if (expression == null) return null;
Object value = ExpressionUtils.computeConstantExpression(expression);
LongRangeSet rangeSet = LongRangeSet.fromConstant(value);
if (rangeSet != null) return rangeSet;