Package org.emftext.language.java.resolver.decider

Interface IResolutionTargetDecider

All Known Implementing Classes:

AbstractDecider, ConcreteClassifierDecider, EnumConstantDecider, FieldDecider, InterfaceMethodDecider, LocalVariableDecider, MethodDecider, PackageDecider, ParameterDecider, TypeParameterDecider

public interface IResolutionTargetDecider

A visitor that determines during a scoped tree traversal if an element is the target. A decider can also influence the traversal itself at certain points to adjust the scoping rules for its needs. A decider can maintain a state for one traversal process.

Method Summary

Modifier and Type	Method	Description
void	activate()	Activates this decider.
boolean	canFindTargetsFor(EObject referenceContainer, EReference crossReference)	Determines if the decider is of any use for the given resolving procedure.
boolean	containsCandidates(EObject container, EReference containingReference)	Determines if the decider needs to look into the given reference.
boolean	continueAfterReference()	Defines, if the scoping for this decider allows to look behind the point where the reference, for which the target is searched, was defined.
void	deactivate()	Deactivates this decider.
EList<? extends EObject>	getAdditionalCandidates(String identifier, EObject container)	Allows for the decider to provide additional target candidates that are not directly contained in the traversed model tree.
boolean	isActive()	Indicates if this decider is active.
boolean	isPossibleTarget(String identifier, EObject element)	Decides if the given element is a (possibly the final) target.
boolean	isSure()	Should return true, if the last time isPossibleTarget() returned true was the final decision (i.e., traversal can be stopped).
void	reset()	Resets the state of the decider before a complete new walk takes place.
boolean	walkInto(EObject element)	Determines if references given element, which is a child of the elements visited by default in the tree traversing, should also be considered.

Method Detail

canFindTargetsFor

boolean canFindTargetsFor(EObject referenceContainer,
                          EReference crossReference)

Determines if the decider is of any use for the given resolving procedure.

Parameters:

referenceContainer -

crossReference -

Returns:

decision

containsCandidates

boolean containsCandidates(EObject container,
                           EReference containingReference)

Determines if the decider needs to look into the given reference.

Parameters:

container -

containingReference -

Returns:

decision

walkInto

boolean walkInto(EObject element)

Determines if references given element, which is a child of the elements visited by default in the tree traversing, should also be considered.

Parameters:

element -

Returns:

decision

isPossibleTarget

boolean isPossibleTarget(String identifier,
                         EObject element)

Decides if the given element is a (possibly the final) target.

Parameters:

identifier -

element -

Returns:

decision

isSure

boolean isSure()

Should return true, if the last time isPossibleTarget() returned true was the final decision (i.e., traversal can be stopped).

Returns:

decision

continueAfterReference

boolean continueAfterReference()

Defines, if the scoping for this decider allows to look behind the point where the reference, for which the target is searched, was defined.

Returns:

decision

getAdditionalCandidates

EList<? extends EObject> getAdditionalCandidates(String identifier,
                                                 EObject container)

Allows for the decider to provide additional target candidates that are not directly contained in the traversed model tree. The additional candidates will be inserted into the scope behind the children of the given container.

Parameters:

identifier -

container -

Returns:

a list of additional candidates.

activate

void activate()

Activates this decider.

deactivate

void deactivate()

Deactivates this decider.

isActive

boolean isActive()

Indicates if this decider is active.

Returns:

true if the decider is active. false otherwise.

reset

void reset()

Resets the state of the decider before a complete new walk takes place.