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>
ElementScanner8
@SupportedSourceVersion(RELEASE_7) public class ElementScanner7<R,P> extends ElementScanner6<R,P>
RELEASE_7
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 |
Deprecated. Release 7 is obsolete; update to a visitor for a newer release level. |
|
protected |
Deprecated. Release 7 is obsolete; update to a visitor for a newer release level. |
Modifier and Type | Method | Description |
---|---|---|
R |
visitVariable |
Visits a variable element. |
scan, scan, scan, visitExecutable, visitPackage, visitType, visitTypeParameter
visit, visit, visitModule, visitRecordComponent, visitUnknown
@Deprecated(since="12") protected ElementScanner7()
null
for the default value.@Deprecated(since="12") protected ElementScanner7(R defaultValue)
defaultValue
- the default valuepublic R visitVariable(VariableElement e, P p)
visitVariable
in interface ElementVisitor<R,P>
visitVariable
in class ElementScanner6<R,P>
e
- the element to visitp
- a visitor-specified parameter
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https://docs.oracle.com/en/java/javase/21/docs/api/java.compiler/javax/lang/model/util/ElementScanner7.html