org.checkerframework.framework.qual

Annotation Type PolyAll

@Documented
 @Target(value={TYPE_USE,TYPE_PARAMETER})
 @Retention(value=RUNTIME)
 @PolymorphicQualifier
public @interface PolyAll

A polymorphic type qualifier that varies over all type hierarchies. Writing @PolyAll is equivalent to writing a polymorphic qualifier for every type system.

The @PolyAll annotation applies to every type qualifier hierarchy for which no explicit qualifier is written. For example, a declaration like @PolyAll @NonNull String s is polymorphic over every type system except the nullness type system, for which the type is fixed at @NonNull.

Implementation note: @PolyAll only works for a given type system if that type system already has its own polymorphic qualifier, such as @PolyNull or @PolyRegex. Therefore, every type system should define a polymorphic qualifier. Then, to support @PolyAll in a type system, simply add it to the list of supported type qualifiers.

See Also:

PolyNull, PolyInterned, QualifierPolymorphism

See the Checker Framework Manual:

The @PolyAll qualifier applies to every type system