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Java Standard Edition (SE)



Class AbstractTypeVisitor7<R,P>

  • Type Parameters:
    R - the return type of this visitor's methods. Use Void for visitors that do not need to return results.
    P - the type of the additional parameter to this visitor's methods. Use Void for visitors that do not need an additional parameter.
    All Implemented Interfaces:
    Direct Known Subclasses:

    public abstract class AbstractTypeVisitor7<R,P>
    extends AbstractTypeVisitor6<R,P>
    A skeletal visitor of types with default behavior appropriate for the RELEASE_7 source version.

    WARNING: The TypeVisitor interface implemented by this class may have methods added to it in the future to accommodate new, currently unknown, language structures added to future versions of the Java™ programming language. Therefore, methods whose names begin with "visit" may be added to this class in the future; to avoid incompatibilities, classes which extend this class should not declare any instance methods with names beginning with "visit".

    When such a new visit method is added, the default implementation in this class will be to call the visitUnknown method. A new abstract type visitor class will also be introduced to correspond to the new language level; this visitor will have different default behavior for the visit method in question. When the new visitor is introduced, all or portions of this visitor may be deprecated.

    Note that adding a default implementation of a new visit method in a visitor class will occur instead of adding a default method directly in the visitor interface since a Java SE 8 language feature cannot be used to this version of the API since this version is required to be runnable on Java SE 7 implementations. Future versions of the API that are only required to run on Java SE 8 and later may take advantage of default methods in this situation.

    See Also:
    AbstractTypeVisitor6, AbstractTypeVisitor8
    • Constructor Detail

      • AbstractTypeVisitor7

        protected AbstractTypeVisitor7()
        Constructor for concrete subclasses to call.
    • Method Detail

      • visitUnion

        public abstract R visitUnion(UnionType t,
                                     P p)
        Visits a UnionType in a manner defined by a subclass.
        Specified by:
        visitUnion in interface TypeVisitor<R,P>
        visitUnion in class AbstractTypeVisitor6<R,P>
        t - the type to visit
        p - a visitor-specified parameter
        the result of the visit as defined by a subclass


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