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lambda: do not even try to infer from return value when value depends on params

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This commit is contained in:
Anna Kozlova
2012-08-27 15:18:37 +04:00
parent bcb9a30c8b
commit 9c4504cfdf
3 changed files with 62 additions and 35 deletions
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17
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/highlighting/NoInferenceResult.java
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@@ -1,17 +1,30 @@
import java.lang.String;
interface I<A, B> {
B foo(A a);
}
class Foo<T> {
public <V> Foo<V> map(I<T, V> mapper) {
return new Foo<V>();
}
}
class NoInferenceResult {
<A, B> I<A, B> m(I<A, B> f) { return null; }
<T> void m1(T t) { }
void test() {
m(<error descr="Incompatible return type <lambda expression> in lambda expression">(String s1) -> (String s2) -> s1 + s2</error>);
m((String s1) -> <error descr="Target type of a lambda conversion must be an interface">(String s2) -> s1 + s2</error>);
m(<error descr="Incompatible return type <lambda expression> in lambda expression">(String s1) -> {return (String s2) -> s1 + s2;}</error>);
m((String s1) -> s1.length());
m((String s1) -> s1);
m1(<error descr="Cyclic inference">() -> { }</error>);
m1(<error descr="Cyclic inference">() -> { }</error>);
Foo<String> foo = new Foo<String>();
foo.map(v -> null);
Foo<String> map1 = foo.map(value -> value + ", " + value);
}
}