Package com.intellij.debugger.engine.evaluation.expression

Class CaptureTraverser

java.lang.Object

com.intellij.debugger.engine.evaluation.expression.CaptureTraverser

public final class CaptureTraverser
extends java.lang.Object

A helper class to find a value of captured outer class "this" object (probably several levels higher from the current class)

Method Summary

Modifier and Type	Method and Description
static CaptureTraverser	create(PsiClass targetClass, PsiClass fromClass, boolean checkInheritance) Creates a traverser that is capable to find an instance of the targetClass having a reference to the fromClass instance
static CaptureTraverser	direct()
boolean	isValid()
CaptureTraverser	oneLevelLess()
com.sun.jdi.ObjectReference	traverse(com.sun.jdi.ObjectReference objRef) Looks for a captured outer this having inner this

Methods inherited from class java.lang.Object

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

Method Detail

oneLevelLess

public CaptureTraverser oneLevelLess()

Returns:

a traverser that traverses one level of nestedness less. An invalid traverser will be returned if this method is called for the direct traverser.

isValid

public boolean isValid()

Returns:

true if this traverser is valid

traverse

public com.sun.jdi.ObjectReference traverse(com.sun.jdi.ObjectReference objRef)

Looks for a captured outer this having inner this

Parameters:

objRef - an inner this object

Returns:

a reference to the outer class instance, or null if not found or this traverser is not valid. Direct traverser simply return the argument.

direct

public static CaptureTraverser direct()

Returns:

a direct traverser that does nothing

create

public static CaptureTraverser create(PsiClass targetClass,
                                      PsiClass fromClass,
                                      boolean checkInheritance)

Creates a traverser that is capable to find an instance of the targetClass having a reference to the fromClass instance

Parameters:

targetClass - target (outer) class

fromClass - source (inner) class

checkInheritance - if true, inheritors of target class are also acceptable

Returns:

a traverser capable to find an instance of the targetClass