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package bjc.utils.parserutils.splitterv2;
import java.util.HashSet;
import java.util.Set;
import java.util.function.Predicate;
import bjc.utils.funcdata.FunctionalList;
import bjc.utils.funcdata.IList;
/**
* A token splitter that will not split certain tokens.
*
* @author EVE
*
*/
public class ExcludingTokenSplitter implements TokenSplitter {
private final Set<String> literalExclusions;
private final IList<Predicate<String>> predExclusions;
private final TokenSplitter spliter;
/**
* Create a new excluding token splitter.
*
* @param splitter
* The splitter to apply to non-excluded strings.
*/
public ExcludingTokenSplitter(final TokenSplitter splitter) {
spliter = splitter;
literalExclusions = new HashSet<>();
predExclusions = new FunctionalList<>();
}
/**
* Exclude literal strings from splitting.
*
* @param exclusions
* The strings to exclude from splitting.
*/
public final void addLiteralExclusions(final String... exclusions) {
for (final String exclusion : exclusions) {
literalExclusions.add(exclusion);
}
}
/**
* Exclude all of the strings matching any of the predicates from
* splitting.
*
* @param exclusions
* The predicates to use for exclusions.
*/
@SafeVarargs
public final void addPredicateExclusion(final Predicate<String>... exclusions) {
for (final Predicate<String> exclusion : exclusions) {
predExclusions.add(exclusion);
}
}
@Override
public IList<String> split(final String input) {
if (literalExclusions.contains(input))
return new FunctionalList<>(input);
else if (predExclusions.anyMatch(pred -> pred.test(input)))
return new FunctionalList<>(input);
else return spliter.split(input);
}
}
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