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package bjc.utils.ioutils.blocks;
import java.io.IOException;
import java.util.function.BooleanSupplier;
import java.util.function.Supplier;
public class BoundBlockReader implements BlockReader {
@FunctionalInterface
public interface Closer {
public void close() throws IOException;
}
private BooleanSupplier checker;
private Supplier<Block> getter;
private Closer closer;
private Block current;
private int blockNo;
public BoundBlockReader(BooleanSupplier blockChecker, Supplier<Block> blockGetter, Closer blockCloser) {
checker = blockChecker;
getter = blockGetter;
closer = blockCloser;
blockNo = 0;
}
@Override
public boolean hasNextBlock() {
return checker.getAsBoolean();
}
@Override
public Block getBlock() {
return current;
}
@Override
public boolean nextBlock() {
if(checker.getAsBoolean()) {
current = getter.get();
blockNo += 1;
return true;
}
return false;
}
@Override
public int getBlockCount() {
return blockNo;
}
@Override
public void close() throws IOException {
closer.close();
}
}
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