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package bjc.utils.funcdata;
import java.util.StringTokenizer;
import java.util.function.Consumer;
import java.util.function.Function;
/**
* A string tokenizer that exposes a functional interface
* @author ben
*
*/
public class FunctionalStringTokenizer {
private StringTokenizer inp;
/**
* Create a functional string tokenizer from a non-functional one
* @param inp The non-functional string tokenizer to wrap
*/
public FunctionalStringTokenizer(StringTokenizer inp) {
this.inp = inp;
}
/**
* Execute a provided action for each of the remaining tokens
* @param f The action to execute for each token
*/
public void forEachToken(Consumer<String> f) {
while(inp.hasMoreTokens()) {
f.accept(inp.nextToken());
}
}
/**
* Return the next token from the tokenizer
* Returns null if no more tokens are available
* @return The next token from the tokenizer
*/
public String nextToken() {
return inp.hasMoreTokens() ? inp.nextToken() : null;
}
/**
* Convert the contents of this tokenizer into a list.
* Consumes all of the input from this tokenizer.
* @param f The function to use to convert tokens.
* @return A list containing all of the converted tokens.
*/
public <E> FunctionalList<E> toList(Function<String, E> f) {
FunctionalList<E> r = new FunctionalList<>();
forEachToken(tk -> r.add(f.apply(tk)));
return r;
}
}
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