java.lang.Object
javax.lang.model.util.AbstractElementVisitor6<R,P>
javax.lang.model.util.ElementScanner6<R,P>
javax.lang.model.util.ElementScanner7<R,P>
javax.lang.model.util.ElementScanner8<R,P>
- Type Parameters:
R
- the return type of this visitor's methods. UseVoid
for visitors that do not need to return results.P
- the type of the additional parameter to this visitor's methods. UseVoid
for visitors that do not need an additional parameter.
- All Implemented Interfaces:
ElementVisitor<R,P>
- Direct Known Subclasses:
ElementScanner9
@SupportedSourceVersion(RELEASE_8) public class ElementScanner8<R,P> extends ElementScanner7<R,P>
A scanning visitor of program elements with default behavior
appropriate for the
RELEASE_8
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 be 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:
- 1.8
- See Also:
- Compatibility note for subclasses,
ElementScanner6
,ElementScanner7
,ElementScanner9
,ElementScanner14
-
Field Summary
Fields declared in class javax.lang.model.util.ElementScanner6
DEFAULT_VALUE
-
Constructor Summary
Constructors Modifier Constructor Description protected
ElementScanner8()
Constructor for concrete subclasses; usesnull
for the default value.protected
ElementScanner8(R defaultValue)
Constructor for concrete subclasses; uses the argument for the default value. -
Method Summary
Methods declared in class javax.lang.model.util.ElementScanner7
visitVariable
Methods declared in class javax.lang.model.util.ElementScanner6
scan, scan, scan, visitExecutable, visitPackage, visitType, visitTypeParameter
Methods declared in class javax.lang.model.util.AbstractElementVisitor6
visit, visit, visitModule, visitRecordComponent, visitUnknown
-
Constructor Details
-
ElementScanner8
protected ElementScanner8()Constructor for concrete subclasses; usesnull
for the default value. -
ElementScanner8
Constructor for concrete subclasses; uses the argument for the default value.- Parameters:
defaultValue
- the default value
-