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package bjc.utils.parserutils.splitterv2;
import bjc.utils.funcdata.FunctionalList;
import bjc.utils.funcdata.IList;
import java.util.HashSet;
import java.util.Set;
import java.util.function.Predicate;
/**
* A token splitter that will not split certain tokens.
*
* @author EVE
*
*/
public class ExcludingTokenSplitter implements TokenSplitter {
private Set<String> literalExclusions;
private IList<Predicate<String>> predExclusions;
private TokenSplitter spliter;
/**
* Create a new excluding token splitter.
*
* @param splitter
* The splitter to apply to non-excluded strings.
*/
public ExcludingTokenSplitter(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(String... exclusions) {
for (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(Predicate<String>... exclusions) {
for (Predicate<String> exclusion : exclusions) {
predExclusions.add(exclusion);
}
}
@Override
public IList<String> split(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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