Module java.compiler
Package javax.lang.model.util

Class SimpleTypeVisitor6<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:
    TypeVisitor<R,P>
    Direct Known Subclasses:
    SimpleTypeVisitor7, TypeKindVisitor6

    @SupportedSourceVersion(RELEASE_6)
public class SimpleTypeVisitor6<R,P>
extends AbstractTypeVisitor6<R,P>
    A simple visitor of types with default behavior appropriate for the RELEASE_6 source version. Visit methods corresponding to RELEASE_6 language constructs call defaultAction, passing their arguments to defaultAction's corresponding parameters. For constructs introduced in RELEASE_7 and later, visitUnknown is called instead.

    Methods in this class may be overridden subject to their general contract. Note that annotating methods in concrete subclasses with @Override will help ensure that methods are overridden as intended.

    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 simple 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.

    Since:
    1.6
    See Also:
    SimpleTypeVisitor7, SimpleTypeVisitor8, SimpleTypeVisitor9

    • Field Detail

      • DEFAULT_VALUE

        protected final R DEFAULT_VALUE
        Default value to be returned; defaultAction returns this value unless the method is overridden.

    • Constructor Detail

      • SimpleTypeVisitor6

        @Deprecated
protected SimpleTypeVisitor6​()
        Deprecated. Release 6 is obsolete; update to a visitor for a newer release level.
        Constructor for concrete subclasses; uses null for the default value.

      • SimpleTypeVisitor6

        @Deprecated
protected SimpleTypeVisitor6​(R defaultValue)
        Deprecated. Release 6 is obsolete; update to a visitor for a newer release level.
        Constructor for concrete subclasses; uses the argument for the default value.
        Parameters:
        defaultValue - the value to assign to DEFAULT_VALUE

    • Method Detail

      • defaultAction

        protected R defaultAction​(TypeMirror e,
                          P p)
        The default action for visit methods. The implementation in this class just returns DEFAULT_VALUE; subclasses will commonly override this method.
        Parameters:
        e - the type to process
        p - a visitor-specified parameter
        Returns:
        DEFAULT_VALUE unless overridden

      • visitPrimitive

        public R visitPrimitive​(PrimitiveType t,
                        P p)
        Visits a primitive type. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitNull

        public R visitNull​(NullType t,
                   P p)
        Visits the null type. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitArray

        public R visitArray​(ArrayType t,
                    P p)
        Visits an array type. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitDeclared

        public R visitDeclared​(DeclaredType t,
                       P p)
        Visits a declared type. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitError

        public R visitError​(ErrorType t,
                    P p)
        Visits an error type. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitTypeVariable

        public R visitTypeVariable​(TypeVariable t,
                           P p)
        Visits a type variable. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitWildcard

        public R visitWildcard​(WildcardType t,
                       P p)
        Visits a wildcard type. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitExecutable

        public R visitExecutable​(ExecutableType t,
                         P p)
        Visits an executable type. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitNoType

        public R visitNoType​(NoType t,
                     P p)
        Visits a NoType instance. This implementation calls defaultAction.
        Parameters:
        t - the type to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction