Class ElementScanner14<R,P>

javax.lang.model.util.ElementScanner14<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:: ElementScannerPreview^PREVIEW

@SupportedSourceVersion(RELEASE_27) public class ElementScanner14<R,P> extends ElementScanner9<R,P>

A scanning visitor of program elements with default behavior appropriate for the RELEASE_14 source version. The visitXyz methods in this class scan their component elements by calling scan on their enclosed elements, parameters, etc., as indicated in the individual method specifications. A subclass can control the order elements are visited by overriding the visitXyz methods. Note that clients of a scanner may get the desired behavior by invoking v.scan(e, p) rather than v.visit(e, p) on the root objects of interest.

When a subclass overrides a visitXyz method, the new method can cause the enclosed elements to be scanned in the default way by calling super.visitXyz. In this fashion, the concrete visitor can control the ordering of traversal over the component elements with respect to the additional processing; for example, consistently calling super.visitXyz at the start of the overridden methods will yield a preorder traversal, etc. If the component elements should be traversed in some other order, instead of calling super.visitXyz, an overriding visit method should call scan with the elements in the desired order.

API Note:

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

Since:

See Also:

Field Summary

Fields declared in class ElementScanner6

DEFAULT_VALUE

Modifier and Type	Field	Description
`protected final R`	`DEFAULT_VALUE`	The specified default value.

Constructor Summary

ElementScanner14()

ElementScanner14(R defaultValue)

Modifier	Constructor	Description
`protected`	Constructor for concrete subclasses; uses `null` for the default value.
`protected`	Constructor for concrete subclasses; uses the argument for the default value.

Method Summary

Modifier and Type	Method	Description
`R`	`visitExecutable(ExecutableElement e, P p)`	Visits an executable element.
`R`	`visitRecordComponent(RecordComponentElement e, P p)`	Visits a record component element.
`R`	`visitType(TypeElement e, P p)`	Visits a type element.

Methods declared in class ElementScanner9

visitModule

Modifier and Type	Method	Description
`R`	`visitModule(ModuleElement e, P p)`	Visits a module element.

Methods declared in class ElementScanner7

visitVariable

Modifier and Type	Method	Description
`R`	`visitVariable(VariableElement e, P p)`	Visits a variable element.

Methods declared in class ElementScanner6

scan, scan, scan, visitPackage, visitTypeParameter

Modifier and Type	Method	Description
`final R`	`scan(Iterable<? extends Element> iterable, P p)`	Iterates over the given elements and calls `scan(Element, P)` on each one.
`final R`	`scan(Element e)`	Convenience method equivalent to `v.scan(e, null)`.
`R`	`scan(Element e, P p)`	Processes an element by calling `e.accept(this, p)`; this method may be overridden by subclasses.
`R`	`visitPackage(PackageElement e, P p)`	Visits a package element.
`R`	`visitTypeParameter(TypeParameterElement e, P p)`	Visits a type parameter element.

Methods declared in class AbstractElementVisitor6

visit, visit, visitUnknown

Modifier and Type	Method	Description
`final R`	`visit(Element e)`	Visits any program element as if by passing itself to that element's `accept` method and passing `null` for the additional parameter.
`final R`	`visit(Element e, P p)`	Visits any program element as if by passing itself to that element's `accept` method.
`R`	`visitUnknown(Element e, P p)`	Visits an unknown kind of element.

Methods declared in class Object

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

Modifier and Type	Method	Description
`protected Object`	`clone()`	Creates and returns a copy of this object.
`boolean`	`equals(Object obj)`	Indicates whether some other object is "equal to" this one.
`protected void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`int`	`hashCode()`	Returns a hash code value for this object.
`final void`	`notify()`	Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()`	Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()`	Returns a string representation of the object.
`final void`	`wait()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Constructor Details

ElementScanner14

protected ElementScanner14()

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

ElementScanner14

protected ElementScanner14(R defaultValue)

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

Parameters:: defaultValue - the default value

Method Details

visitType

public R visitType(TypeElement e, P p)

Visits a type element.

Specified by:: visitType in interface ElementVisitor<R,P>
Overrides:: visitType in class ElementScanner6<R,P>
Implementation Requirements:: This implementation scans the type parameters, if any, and then the enclosed elements.
Parameters:: e - the element to visit; p - a visitor-specified parameter
Returns:: the result of scanning

visitExecutable

public R visitExecutable(ExecutableElement e, P p)

Visits an executable element.

Specified by:: visitExecutable in interface ElementVisitor<R,P>
Overrides:: visitExecutable in class ElementScanner6<R,P>
Implementation Requirements:: This implementation first scans the type parameters, if any, and then the parameters.
Parameters:: e - the element to visit; p - a visitor-specified parameter
Returns:: the result of scanning

visitRecordComponent

public R visitRecordComponent(RecordComponentElement e, P p)

Visits a record component element.

Specified by:: visitRecordComponent in interface ElementVisitor<R,P>
Overrides:: visitRecordComponent in class ElementScanner6<R,P>
Implementation Requirements:: This implementation scans the enclosed elements.
Parameters:: e - the element to visit; p - a visitor-specified parameter
Returns:: the result of scanning

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