Package edu.umd.cs.findbugs.detect

Class ReflectiveFieldAccessor

java.lang.Object

edu.umd.cs.findbugs.detect.ReflectiveFieldAccessor

class ReflectiveFieldAccessor
extends java.lang.Object

A reflective field accessor (VarHandle, MethodHandle or AtomicFieldUpdater).

A plain mutable value class. It is created when the accessor handle is obtained (findGetter, findVarHandle, newUpdater, ...) and completed once the handle is stored into a field, at which point accessorField is filled in. For a MethodHandle the accessType is fixed at creation (GETTER or SETTER); for VarHandle/AtomicFieldUpdater it is ReflectiveAccessTracker.AccessType.BOTH because the actual access type is only known at invocation time.

expectedAssignmentPC is scanning-phase state: it tells the detector at which PC the handle is expected to be stored into its field, and is meaningless once the accessor has been registered.

Field Summary

Fields

Modifier and Type	Field	Description
private XField	accessorField	The field holding the handle; set once the handle is stored.
private ReflectiveAccessTracker.AccessType	accessType	GETTER/SETTER for MethodHandle, BOTH for VarHandle/AtomicFieldUpdater.
private XField	actualField	The field the accessor reads or writes.
private SourceLineAnnotation	declarationSourceLine	Source line where the accessor was declared.
private int	expectedAssignmentPC	PC at which the handle is expected to be stored into its field.
private boolean	wasUsed	Set during resolution if the accessor is actually invoked.

Constructor Summary

Constructors

Constructor	Description
ReflectiveFieldAccessor(XField actualField, ReflectiveAccessTracker.AccessType accessType, SourceLineAnnotation declarationSourceLine, int expectedAssignmentPC)

Method Summary

Modifier and Type	Method	Description
(package private) XField	accessorField()
(package private) ReflectiveAccessTracker.AccessType	accessType()
(package private) XField	actualField()
(package private) int	expectedAssignmentPC()
(package private) void	markUsed()
(package private) void	setAccessorField(XField accessorField)
(package private) SourceLineAnnotation	sourceLine()
(package private) boolean	wasUsed()

Methods inherited from class java.lang.Object

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

Field Detail

actualField

private final XField actualField

The field the accessor reads or writes.

accessType

private final ReflectiveAccessTracker.AccessType accessType

GETTER/SETTER for MethodHandle, BOTH for VarHandle/AtomicFieldUpdater.

declarationSourceLine

private final SourceLineAnnotation declarationSourceLine

Source line where the accessor was declared.

expectedAssignmentPC

private final int expectedAssignmentPC

PC at which the handle is expected to be stored into its field.

accessorField

private XField accessorField

The field holding the handle; set once the handle is stored.

wasUsed

private boolean wasUsed

Set during resolution if the accessor is actually invoked.

Constructor Detail

ReflectiveFieldAccessor

ReflectiveFieldAccessor(XField actualField,
                        ReflectiveAccessTracker.AccessType accessType,
                        SourceLineAnnotation declarationSourceLine,
                        int expectedAssignmentPC)

Method Detail

expectedAssignmentPC

int expectedAssignmentPC()

markUsed

void markUsed()

wasUsed

boolean wasUsed()

accessorField

XField accessorField()

setAccessorField

void setAccessorField(XField accessorField)

actualField

XField actualField()

accessType

ReflectiveAccessTracker.AccessType accessType()

sourceLine

SourceLineAnnotation sourceLine()