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package bjc.utils.funcutils;
import java.util.function.BiFunction;
import bjc.utils.funcdata.FunctionalList;
import bjc.utils.funcdata.IFunctionalList;
final class TokenDeaffixer implements
BiFunction<String, String, IFunctionalList<String>> {
private String token;
public TokenDeaffixer(String tok) {
token = tok;
}
@Override
public IFunctionalList<String> apply(String operatorName,
String operatorRegex) {
if (operatorName == null) {
throw new NullPointerException(
"Operator name must not be null");
} else if (operatorRegex == null) {
throw new NullPointerException(
"Operator regex must not be null");
}
if (StringUtils.containsOnly(token, operatorRegex)) {
return new FunctionalList<>(token);
} else if (token.startsWith(operatorName)) {
return new FunctionalList<>(operatorName,
token.split(operatorRegex)[1]);
} else if (token.endsWith(operatorName)) {
return new FunctionalList<>(token.split(operatorRegex)[0],
operatorName);
} else {
return new FunctionalList<>(token);
}
}
}
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