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good code is red: wildcard should check the bound if any in order to prove difference (IDEA-63291)

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anna
2012-04-05 19:08:45 +02:00
parent b706c5284e
commit 9242d62213
3 changed files with 61 additions and 2 deletions
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java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/IDEA63291.java
+57
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import java.util.Comparator;
import java.util.Set;
public class CastError {
public void foo(Comparator<? super byte[]> comparator) throws Exception {
MyComparator comparator1 = (MyComparator) comparator;
}
public void foo1(Comparator<byte[]> comparator) throws Exception {
MyComparator comparator1 = (MyComparator) comparator;
}
public void foo2(Comparator<? extends byte[]> comparator) throws Exception {
MyComparator comparator1 = (MyComparator) comparator;
}
public void foo3(Comparator<? super String[]> comparator) throws Exception {
MyComparator comparator1 = <error descr="Inconvertible types; cannot cast 'java.util.Comparator<capture<? super java.lang.String[]>>' to 'MyComparator'">(MyComparator) comparator</error>;
}
public void foo4(Comparator<? extends String[]> comparator) throws Exception {
MyComparator comparator1 = <error descr="Inconvertible types; cannot cast 'java.util.Comparator<capture<? extends java.lang.String[]>>' to 'MyComparator'">(MyComparator) comparator</error>;
}
public void foo5(Comparator<?> comparator) throws Exception {
MyComparator comparator1 = (MyComparator) comparator;
}
//--||--||--||--||--||--||--||--||--||--||--||--||--||--||--||--||--||--||--
public void sfoo(Set<Comparator<? super byte[]>> comparator) throws Exception {
Set<MyComparator> comparator1 = <error descr="Inconvertible types; cannot cast 'java.util.Set<java.util.Comparator<? super byte[]>>' to 'java.util.Set<MyComparator>'">(Set<MyComparator>) comparator</error>;
}
public void sfoo1(Set<Comparator<byte[]>> comparator) throws Exception {
Set<MyComparator> comparator1 = <error descr="Inconvertible types; cannot cast 'java.util.Set<java.util.Comparator<byte[]>>' to 'java.util.Set<MyComparator>'">(Set<MyComparator>) comparator</error>;
}
public void sfoo2(Set<Comparator<? extends byte[]>> comparator) throws Exception {
Set<MyComparator> comparator1 = <error descr="Inconvertible types; cannot cast 'java.util.Set<java.util.Comparator<? extends byte[]>>' to 'java.util.Set<MyComparator>'">(Set<MyComparator>) comparator</error>;
}
public void sfoo3(Set<Comparator<? super String[]>> comparator) throws Exception {
Set<MyComparator> comparator1 = <error descr="Inconvertible types; cannot cast 'java.util.Set<java.util.Comparator<? super java.lang.String[]>>' to 'java.util.Set<MyComparator>'">(Set<MyComparator>) comparator</error>;
}
public void sfoo4(Set<Comparator<? extends String[]>> comparator) throws Exception {
Set<MyComparator> comparator1 = <error descr="Inconvertible types; cannot cast 'java.util.Set<java.util.Comparator<? extends java.lang.String[]>>' to 'java.util.Set<MyComparator>'">(Set<MyComparator>) comparator</error>;
}
public void sfoo5(Set<Comparator<?>> comparator) throws Exception {
Set<MyComparator> comparator1 = <error descr="Inconvertible types; cannot cast 'java.util.Set<java.util.Comparator<?>>' to 'java.util.Set<MyComparator>'">(Set<MyComparator>) comparator</error>;
}
}
abstract class MyComparator implements Comparator<byte[]> {
}