Module java.compiler

Package javax.lang.model.util

Class SimpleElementVisitor6<R,P>

java.lang.Object

javax.lang.model.util.AbstractElementVisitor6<R,P>

javax.lang.model.util.SimpleElementVisitor6<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:

ElementVisitor<R,P>

Direct Known Subclasses:

ElementKindVisitor6, SimpleElementVisitor7

@SupportedSourceVersion(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.

API Note:

Methods in this class may be overridden subject to their general contract.

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 and subclasses 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 directly or indirectly 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 a new visitor is introduced, portions of this visitor class may be deprecated, including its constructors.

Since:

1.6

See Also:

• SimpleElementVisitor7
• SimpleElementVisitor8
• SimpleElementVisitor9
• SimpleElementVisitor14

Field Summary

Fields

Modifier and Type	Field	Description
protected final R	DEFAULT_VALUE	Default value to be returned; defaultAction returns this value unless the method is overridden.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SimpleElementVisitor6()	Deprecated. Release 6 is obsolete; update to a visitor for a newer release level.
protected	SimpleElementVisitor6(R defaultValue)	Deprecated. Release 6 is obsolete; update to a visitor for a newer release level.

Method Summary

Modifier and Type	Method	Description
protected R	defaultAction(Element e, P p)	The default action for visit methods.
R	visitExecutable(ExecutableElement e, P p)	Visits an executable element.
R	visitPackage(PackageElement e, P p)	Visits a package element.
R	visitType(TypeElement e, P p)	Visits a type element.
R	visitTypeParameter(TypeParameterElement e, P p)	Visits a type parameter element.
R	visitVariable(VariableElement e, P p)	Visits a variable element.

Methods declared in class javax.lang.model.util.AbstractElementVisitor6

visit, visit, visitModule, visitRecordComponent, visitUnknown

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_VALUE

protected final R DEFAULT_VALUE

Default value to be returned; defaultAction returns this value unless the method is overridden.

Constructor Details

SimpleElementVisitor6

@Deprecated(since="9")
protected SimpleElementVisitor6()

Deprecated.

Release 6 is obsolete; update to a visitor for a newer release level.

Constructor for concrete subclasses; uses null for the default value.

SimpleElementVisitor6

@Deprecated(since="9")
protected SimpleElementVisitor6(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 Details

defaultAction

protected R defaultAction(Element e,
 P p)

The default action for visit methods.

Implementation Requirements:

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.

Implementation Requirements:

This implementation calls defaultAction.

Parameters:

e - the element to visit

p - a visitor-specified parameter

Returns:

a visitor-specified result

visitType

public R visitType(TypeElement e,
 P p)

Visits a type element.

Implementation Requirements:

This implementation calls defaultAction.

Parameters:

e - the element to visit

p - a visitor-specified parameter

Returns:

a visitor-specified result

visitVariable

public R visitVariable(VariableElement e,
 P p)

Visits a variable element.

Implementation Requirements:

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:

a visitor-specified result

visitExecutable

public R visitExecutable(ExecutableElement e,
 P p)

Visits an executable element.

Implementation Requirements:

This implementation calls defaultAction.

Parameters:

e - the element to visit

p - a visitor-specified parameter

Returns:

a visitor-specified result

visitTypeParameter

public R visitTypeParameter(TypeParameterElement e,
 P p)

Visits a type parameter element.

Implementation Requirements:

This implementation calls defaultAction.

Parameters:

e - the element to visit

p - a visitor-specified parameter

Returns:

a visitor-specified result