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javax.lang.model.util

Class SimpleElementVisitor6<R,P&g- t;

Contents
  • 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:
    ElementVisitor<R,P>
    Direct Known Subclasses:
    ElementKindVisitor6, SimpleElementVisitor7

    @SupportedSourceVersion(value=RELEASE_6)
public class SimpleElementVisitor6<R,P>
extends AbstractElementVisitor6<R,P>
    A simple visitor of program elements 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 ElementVisitor 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 element 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:
    SimpleElementVisitor7

    • 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

      • SimpleElementVisitor6

        protected SimpleElementVisitor6()
        Constructor for concrete subclasses; uses null for the default value.

      • SimpleElementVisitor6

        protected SimpleElementVisitor6(R defaultValue)
        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(Element 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 element to process
        p - a visitor-specified parameter
        Returns:
        DEFAULT_VALUE unless overridden

      • visitPackage

        public R visitPackage(PackageElement e,
             P p)
        Visits a package element. This implementation calls defaultAction.
        Parameters:
        e - the element to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitType

        public R visitType(TypeElement e,
          P p)
        Visits a type element. This implementation calls defaultAction.
        Parameters:
        e - the element to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction

      • visitVariable

        public R visitVariable(VariableElement e,
              P p)
        Visits a variable element. This implementation calls defaultAction, unless the element is a RESOURCE_VARIABLE in which case visitUnknown is called.
        Parameters:
        e - the element to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction or visitUnknown

      • visitExecutable

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

      • visitTypeParameter

        public R visitTypeParameter(TypeParameterElement e,
                   P p)
        Visits a type parameter element. This implementation calls defaultAction.
        Parameters:
        e - the element to visit
        p - a visitor-specified parameter
        Returns:
        the result of defaultAction
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