org.eclipse.xtext.xbase.typesystem.conformance

Class TypeConformanceComputer.MaxDistanceRawTypeAcceptor

java.lang.Object

org.eclipse.xtext.xbase.typesystem.conformance.TypeConformanceComputer.MaxDistanceRawTypeAcceptor

All Implemented Interfaces:

SuperTypeAcceptor

Enclosing class:

TypeConformanceComputer

protected static class TypeConformanceComputer.MaxDistanceRawTypeAcceptor
extends java.lang.Object
implements SuperTypeAcceptor

Populates a Multiset with the maximum number of necessary steps from a given type to its super types. Sorting the set by the steps creates a stable order on from the direct super class, the most specialized implemented interfaces up to object. E.g. although StringBuilder implements Serializable and CharSequence, serializable is treated as more specific by this algorithm since the super class AbstractStringBuilder implements CharSequence, too. Thus the number of steps to Serializable is 1 while CharSequence requires 2 hops.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MaxDistanceRawTypeAcceptor(com.google.common.collect.Multiset<org.eclipse.xtext.common.types.JvmType> result, com.google.common.collect.Multimap<org.eclipse.xtext.common.types.JvmType,LightweightTypeReference> all)

Method Summary

Modifier and Type	Method and Description
boolean	accept(LightweightTypeReference superType, int distance)

Methods inherited from class java.lang.Object

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

Constructor Detail

MaxDistanceRawTypeAcceptor

protected MaxDistanceRawTypeAcceptor(com.google.common.collect.Multiset<org.eclipse.xtext.common.types.JvmType> result,
                                     com.google.common.collect.Multimap<org.eclipse.xtext.common.types.JvmType,LightweightTypeReference> all)

Method Detail

accept

public boolean accept(LightweightTypeReference superType,
                      int distance)

Specified by:

accept in interface SuperTypeAcceptor

Parameters:

superType - a visited super type

distance - the distance to the starting type. StringBuilder has a distance 1 to AbstractStringBuilder, distance 1 and 2 to CharSequence and distance 2 to Appendable.