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new overload resolution: first check that collected methods are potentially compatible with args; for generic methods without specified type arguments this already means that they are applicable; for non generic methods (or raw method calls) expressions should be compatible with parameter types (formal parameter types = actual types as substitutor is known) (IDEA-147798)

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This commit is contained in:
Anna Kozlova
2015-11-20 18:15:38 +01:00
parent aded26aa0a
commit 61f120b30e
11 changed files with 146 additions and 43 deletions
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6
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/highlighting/TypeArgsConsistencyMisc1.java
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@@ -66,9 +66,9 @@ class Test2 {
{
bar(x -> x);
bar1(x -> x);
bar2(1, x -> <error descr="Bad return type in lambda expression: List<Integer> cannot be converted to Integer">x</error>);
bar2("", x -> <error descr="Bad return type in lambda expression: List<String> cannot be converted to String">x</error>);
bar3(x -> <error descr="Bad return type in lambda expression: List<String> cannot be converted to String">x</error>, "");
bar2(1, <error descr="Bad return type in lambda expression: List<Integer> cannot be converted to Integer">x -> x</error>);
bar2("", <error descr="Bad return type in lambda expression: List<String> cannot be converted to String">x -> x</error>);
bar3(<error descr="Bad return type in lambda expression: List<String> cannot be converted to String">x -> x</error>, "");
}
}

16
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/mostSpecific/EnsureArgTypesAreNotCalculatedDuringOverload.java Normal file
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@@ -0,0 +1,16 @@
import java.util.Optional;
class Resource<<warning descr="Type parameter 'K' is never used">K</warning>> {
private static <T> Resource<T> <warning descr="Private method 'of(T)' is never used">of</warning>(T <warning descr="Parameter 'data' is never used">data</warning>) {
return null;
}
private static <T> Resource<T> of(Optional<T> <warning descr="Parameter 'i' is never used">i</warning>) {
return null;
}
static {
final Optional<String> empty = Optional.empty();
Resource.of(empty.flatMap(s -> empty));
}
}

2
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/LiftedIntersectionType.java
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@@ -13,7 +13,7 @@ class Test {
}
void bar(C c) {
foo(c, x -> <error descr="Bad return type in lambda expression: A cannot be converted to C">x.f()</error>);
foo(c, <error descr="Bad return type in lambda expression: A cannot be converted to C">x -> x.f()</error>);
foo(c, x -> x);
}

2
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newMethodRef/PotentialApplicability.java
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@@ -52,7 +52,7 @@ class Test {
static {
Test s1 = staticCall(Test::n0);
Test s2 = staticCall(Test::n1);
Test s3 = staticCall<error descr="Cannot resolve method 'staticCall(<method reference>)'">(Test::n2)</error>;
Test s3 = <error descr="Cannot resolve method 'staticCall(<method reference>)'">staticCall</error>(Test::n2);
Test s4 = staticCall<error descr="Ambiguous method call: both 'Test.staticCall(I1<Test>)' and 'Test.staticCall(I2<Test, String>)' match">(Test::n01)</error>;
Test s5 = staticCall<error descr="Ambiguous method call: both 'Test.staticCall(I1<Test>)' and 'Test.staticCall(I2<Test, String>)' match">(Test::n012)</error>;
}

4
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/params/MethodApplicability.java
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@@ -26,7 +26,7 @@ class Foo {
System.out.println(s);
});
<error descr="Cannot resolve method 'foo(<lambda expression>)'">foo</error>((String p, String k) -> {
foo(<error descr="Incompatible parameter types in lambda expression: expected int but found String">(String p, String k)</error> -> {
System.out.println(p);
});
}
@@ -62,7 +62,7 @@ class WithTypeParams {
System.out.println(p);
});
<error descr="Cannot resolve method 'foo(<lambda expression>)'">foo</error>((int k) -> {System.out.println(k);});
foo(<error descr="Incompatible parameter types in lambda expression: expected String but found int">(int k)</error> -> {System.out.println(k);});
}
}
}