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import java.util.ArrayList;
import java.util.List;
import org.checkerframework.checker.interning.qual.*;
/*
* TODO: Make diamond cleverer:
* List<@Interned String> sl = new ArrayList<>();
* currently is interpreted as
* List<@Interned String> sl = new ArrayList<String>();
* and then the assignment fails.
*/
class Raw3 {
// We would like behavior that is as similar as possible between the
// versions with no raw types and those with raw types.
// no raw types
List<String> foo1() {
List<String> sl = new ArrayList<>();
return (List<String>) sl;
}
// with raw types
List<String> foo2() {
List<String> sl = new ArrayList<>();
// :: warning: [unchecked] unchecked conversion
return (List) sl;
}
// no raw types
List<String> foo3() {
List<@Interned String> sl = new ArrayList<>();
// :: error: (return.type.incompatible)
return (List<@Interned String>) sl;
}
// with raw types
List<String> foo4() {
List<@Interned String> sl = new ArrayList<>();
// :: warning: [unchecked] unchecked conversion
return (List) sl;
}
// no raw types
List<@Interned String> foo5() {
List<String> sl = new ArrayList<>();
// :: error: (return.type.incompatible)
return (List<String>) sl;
}
// with raw types
List<@Interned String> foo6() {
List<String> sl = new ArrayList<>();
// :: warning: [unchecked] unchecked conversion
return (List) sl;
}
class TestList<T> {
List<String> bar1() {
List<String> sl = new ArrayList<>();
return (List<String>) sl;
}
List<String> bar2() {
List<String> sl = new ArrayList<>();
// :: warning: [unchecked] unchecked conversion
return (List) sl;
}
List<String> bar3(List<String> sl) {
// :: warning: [unchecked] unchecked conversion
return (List) sl;
}
class DuoList<S, T> extends ArrayList<S> {}
List<String> bar4(List<String> sl) {
// This line was previously failing because we couldn't adequately infer the
// type of DuoList as a List; it works now, though the future checking of rawtypes
// may be more strict
// :: warning: [unchecked] unchecked conversion
return (DuoList) sl;
}
}
}
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