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lambda: infer from return type; cyclic inference stop

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This commit is contained in:
Anna Kozlova
2012-08-10 22:41:35 +04:00
parent bff2c6d55c
commit 5ba5425a54
22 changed files with 642 additions and 207 deletions
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18
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/highlighting/InferenceFromArgs.java
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@@ -11,19 +11,21 @@ interface SameArgsI<T> {
class InferenceFromArgs {
private static <E> void bar(A<? extends E> a, I<? super E, Integer> i) { }
private static <E> void bar(A<E> a, I<E, Integer> i) { }
private static <E> void bazz(I<? super E, Integer> i) { }
void foo(B<Integer> b) {
bar(b, (k, v) -> {int i = k; int j = v; return Math.max(i, j);});
bar(null, <error descr="Cyclic inference">(k, v) -> v</error>);
bar(null, null);
bar(b, (k, v) -> {return v;});
bar(b, (k, v) -> {<error descr="Incompatible types. Found: 'java.lang.Integer', required: 'java.lang.String'">String i = k;</error> return v;});
bar(b, (k, v) -> {Integer i = k; return v;});
bazz(<error descr="Cyclic inference">(k, v) -> v</error>);
bazz((k, v) -> {<error descr="Incompatible types. Found: 'E', required: 'int'">int i = k;</error> return v;});
}
public static <T> SameArgsI<T> max() {
return (a, b) -> b;
}
}