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package bjc.utils.math;
import java.util.Map;
import java.util.Map.Entry;
import java.util.function.BiFunction;
import java.util.function.LongPredicate;
/*
* @TODO 2/12/18 Ben Culkin :AdditionalCardinals
*
* Add some built-in implementations for various things.
*/
/**
* Customizations for number cardinalization.
*
* @author EVE
*
*/
public class CardinalState {
/**
* Alias type for converting numbers to cardinals.
*
* @author EVE
*
*/
@FunctionalInterface
public interface Cardinalizer extends BiFunction<Long, CardinalState, String> {
/*
* Alias
*/
}
/**
* Custom cardinals for numbers.
*/
public final Map<Long, String> customNumbers;
/**
* Custom functions to apply to certain scales.
*/
public final Map<LongPredicate, Cardinalizer> customScales;
/**
* Create a new set of cardinalization customizations.
*
* @param customNumbers
* The custom numbers to use.
* @param customScales
* The custom scales to use.
*/
public CardinalState(Map<Long, String> customNumbers, Map<LongPredicate, Cardinalizer> customScales) {
this.customNumbers = customNumbers;
this.customScales = customScales;
}
/**
* Handle a custom cardinal number
*
* @param number
* The number to handle
* @return The number as a cardinal, or null if we don't handle it.
*/
public String handleCustom(long number) {
if(customNumbers.containsKey(number)) {
return customNumbers.get(number);
}
for(Entry<LongPredicate, Cardinalizer> ent : customScales.entrySet()) {
if(ent.getKey().test(number)) {
return ent.getValue().apply(number, this);
}
}
return null;
}
}
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