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package org.eclipse.viatra.solver.data.model.representation;
public class TruthValue {
public static final TruthValue True = new TruthValue("true");
public static final TruthValue False = new TruthValue("false");
public static final TruthValue Unknown = new TruthValue("unknown");
public static final TruthValue Error = new TruthValue("error");
private final String name;
protected TruthValue(String name) {
this.name = name;
}
public String getName() {
return name;
}
public static TruthValue toTruthValue(boolean value) {
if(value) return True;
else return False;
}
public boolean isConsistent() {
return this != Error;
}
public boolean isComplete() {
return this != Unknown;
}
public boolean must() {
return this == True || this == Error;
}
public boolean may() {
return this == True || this == Unknown;
}
public TruthValue not() {
if(this == True) {
return False;
} else if(this == False) {
return True;
} else {
return this;
}
}
}
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