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.ElementVisitor<R,P>
@SupportedSourceVersion(RELEASE_21) public class ElementScanner14<R,P> extends ElementScanner9<R,P>
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.
DEFAULT_VALUE
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. |
Modifier and Type | Method | Description |
---|---|---|
R |
visitExecutable |
Visits an executable element. |
R |
visitRecordComponent |
Visits a record component element. |
R |
visitType |
Visits a type element. |
visitModule
visitVariable
scan, scan, scan, visitPackage, visitTypeParameter
visit, visit, visitUnknown
protected ElementScanner14()
null
for the default value.protected ElementScanner14(R defaultValue)
defaultValue
- the default valuepublic R visitType(TypeElement e, P p)
visitType
in interface ElementVisitor<R,P>
visitType
in class ElementScanner6<R,P>
e
- the element to visitp
- a visitor-specified parameterpublic R visitExecutable(ExecutableElement e, P p)
visitExecutable
in interface ElementVisitor<R,P>
visitExecutable
in class ElementScanner6<R,P>
e
- the element to visitp
- a visitor-specified parameterpublic R visitRecordComponent(RecordComponentElement e, P p)
visitRecordComponent
in interface ElementVisitor<R,P>
visitRecordComponent
in class AbstractElementVisitor6<R,P>
e
- the element to visitp
- a visitor-specified parameter
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
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https://docs.oracle.com/en/java/javase/21/docs/api/java.compiler/javax/lang/model/util/ElementScanner14.html