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method refs: check if interface functional (IDEA-125511)

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This commit is contained in:
Anna Kozlova
2014-05-26 09:19:31 +04:00
parent 5e7d32c94e
commit eaa9ce63f6
4 changed files with 25 additions and 6 deletions
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java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightVisitorImpl.java
+13 -5
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@@ -1234,11 +1234,19 @@ public class HighlightVisitorImpl extends JavaElementVisitor implements Highligh
}
if (!myHolder.hasErrorResults()) {
final PsiType functionalInterfaceType = expression.getFunctionalInterfaceType();
if (functionalInterfaceType != null && LambdaUtil.dependsOnTypeParams(functionalInterfaceType, functionalInterfaceType, expression)) {
HighlightInfo result1 =
HighlightInfo.newHighlightInfo(HighlightInfoType.ERROR).range(expression).descriptionAndTooltip("Cyclic inference").create();
myHolder.add(result1); //todo[ann] append not inferred type params info
} else {
if (functionalInterfaceType != null) {
final boolean notFunctional = !LambdaUtil.isFunctionalType(functionalInterfaceType);
if (notFunctional) {
myHolder.add(HighlightInfo.newHighlightInfo(HighlightInfoType.ERROR).range(expression)
.descriptionAndTooltip(functionalInterfaceType.getPresentableText() + " is not a functional interface").create());
}
else if (LambdaUtil.dependsOnTypeParams(functionalInterfaceType, functionalInterfaceType, expression)) {
HighlightInfo result1 =
HighlightInfo.newHighlightInfo(HighlightInfoType.ERROR).range(expression).descriptionAndTooltip("Cyclic inference").create();
myHolder.add(result1); //todo[ann] append not inferred type params info
}
}
if (!myHolder.hasErrorResults()) {
final PsiElement referenceNameElement = expression.getReferenceNameElement();
if (referenceNameElement instanceof PsiKeyword) {
if (!PsiMethodReferenceUtil.isValidQualifier(expression)) {