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java highlighting: provide better incompatible types message on failed inference

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GitOrigin-RevId: 5f97ec808f753d9ca40c417704ec93a802512745
This commit is contained in:
Anna Kozlova
2019-07-08 12:04:21 +03:00
committed by intellij-monorepo-bot
parent 6a7856d5c6
commit afa0706bfc
28 changed files with 87 additions and 101 deletions
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java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/IDEA127215.java
+1 -5
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@@ -22,11 +22,7 @@ abstract class FooBar<M> {
}
class Test {
<T> List<List<Object>> foo(List<T> objects, Function<T, ?>... functions) {
return <error descr="Incompatible types. Required List<List<Object>> but 'collect' was inferred to R:
no instance(s) of type variable(s) exist so that List<capture of ?> conforms to List<Object>
inference variable T has incompatible bounds:
equality constraints: List<Object>
lower bounds: List<capture of ?>">objects.stream()
return <error descr="Incompatible types. Found: 'java.util.List<java.util.List<capture<?>>>', required: 'java.util.List<java.util.List<java.lang.Object>>'">objects.stream()
.map(object -> Arrays.stream(functions)
.map(fn -> fn.apply(object))
.collect(toList()))