Package org.eclipse.xtext.xbase.typesystem.internal

Class NullFeatureLinkingCandidate

java.lang.Object

org.eclipse.xtext.xbase.typesystem.internal.AbstractNullLinkingCandidate

org.eclipse.xtext.xbase.typesystem.internal.NullFeatureLinkingCandidate

All Implemented Interfaces:

IApplicableCandidate, IFeatureLinkingCandidate, ILinkingCandidate

public class NullFeatureLinkingCandidate
extends AbstractNullLinkingCandidate
implements IFeatureLinkingCandidate

Field Summary

Fields inherited from class org.eclipse.xtext.xbase.typesystem.internal.AbstractNullLinkingCandidate

featureOrConstructorCall

Constructor Summary

Constructors

Constructor	Description
NullFeatureLinkingCandidate(XAbstractFeatureCall featureCall, AbstractTypeComputationState state)

Method Summary

Modifier and Type	Method	Description
void	applyToComputationState()	Apply this candidate to the current computation state model.
XAbstractFeatureCall	getFeatureCall()	Returns the feature call that is linked.
ILinkingCandidate	getPreferredCandidate(ILinkingCandidate other)	Produces the best candidate for the current two candidates.
boolean	isExtension()	Returns true if the linked feature is contributed by an extension.
boolean	isStatic()	Returns true if the linked feature is static.
boolean	isTypeLiteral()	Returns true if the feature call is linked as a type literal.

Methods inherited from class org.eclipse.xtext.xbase.typesystem.internal.AbstractNullLinkingCandidate

applyToModel, getExpression, getFeature, getTypeArguments, validate

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.xtext.xbase.typesystem.computation.IApplicableCandidate

validate

Methods inherited from interface org.eclipse.xtext.xbase.typesystem.computation.ILinkingCandidate

applyToModel, getExpression, getFeature, getTypeArguments

Constructor Detail

NullFeatureLinkingCandidate

public NullFeatureLinkingCandidate(XAbstractFeatureCall featureCall,
                                   AbstractTypeComputationState state)

Method Detail

getPreferredCandidate

public ILinkingCandidate getPreferredCandidate(ILinkingCandidate other)

Description copied from interface: ILinkingCandidate

Produces the best candidate for the current two candidates. It may turn out that both candidates (this and other) are ambiguous so no prefered candidate can be chosen. In that case, a new linking candidate may be produced that carries this information and will use that on ILinkingCandidate.applyToComputationState(), ILinkingCandidate.applyToModel(IResolvedTypes), and IApplicableCandidate.validate(IAcceptor).

Specified by:

getPreferredCandidate in interface ILinkingCandidate

getFeatureCall

public XAbstractFeatureCall getFeatureCall()

Description copied from interface: IFeatureLinkingCandidate

Returns the feature call that is linked.

Specified by:

getFeatureCall in interface IFeatureLinkingCandidate

Returns:

the feature call.

isStatic

public boolean isStatic()

Description copied from interface: IFeatureLinkingCandidate

Returns true if the linked feature is static.

Specified by:

isStatic in interface IFeatureLinkingCandidate

Returns:

whether the feature is static.

isExtension

public boolean isExtension()

Description copied from interface: IFeatureLinkingCandidate

Returns true if the linked feature is contributed by an extension.

Specified by:

isExtension in interface IFeatureLinkingCandidate

Returns:

whether the feature is extension.

isTypeLiteral

public boolean isTypeLiteral()

Description copied from interface: IFeatureLinkingCandidate

Returns true if the feature call is linked as a type literal.

Specified by:

isTypeLiteral in interface IFeatureLinkingCandidate

Returns:

whether the feature call is a type literal rather than a real feature call.

applyToComputationState

public void applyToComputationState()

Description copied from interface: ILinkingCandidate

Apply this candidate to the current computation state model. This propagates the type information about arguments and child expressions to the currently active resolution state.

Specified by:

applyToComputationState in interface ILinkingCandidate