Added New Iterable Feature
-Added: Repeating iterable/iterator/async feature which allows to repeate collections a desired amount of times. -Added: Tests for it.
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@ -149,6 +149,15 @@ public interface ITERABLE KEY_GENERIC_TYPE extends Iterable<CLASS_TYPE>
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return ITERABLES.distinct(this);
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}
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/**
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* A Helper function to reduce the usage of Streams and allows to repeat elements a desired amount of times
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* @param repeats how many times the elements should be repeated
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* @return a Iterable that is repeating multiple times
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*/
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default ITERABLE KEY_GENERIC_TYPE repeat(int repeats) {
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return ITERABLES.repeat(this, repeats);
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}
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/**
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* A Helper function to reduce the usage of Streams and allows to limit the amount of elements
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* @param limit the amount of elements it should be limited to
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@ -173,6 +173,16 @@ public class ASYNC_BUILDER KEY_GENERIC_TYPE
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return this;
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}
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/**
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* Repeats the elements inside of the Iterable
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* @param repeats the amount of times the elements should be repeated
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* @return self with a repeater applied
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*/
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public ASYNC_BUILDER KEY_GENERIC_TYPE repeat(int repeats) {
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iterable = ITERABLES.repeat(iterable, repeats);
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return this;
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}
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/**
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* Limits how many elements are inside of the Iterable
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* @param limit how many elements should max be iterated through
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@ -147,6 +147,28 @@ public class ITERABLES
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return new DistinctIterableBRACES(wrap(iterable));
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}
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/**
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* A Helper function that repeats the Iterable a specific amount of times
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* @param iterable that should be repeated
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* @param repeats the amount of times the iterable should be repeated
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* @Type(T)
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* @return a repeating iterable
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*/
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public static GENERIC_KEY_BRACES ITERABLE KEY_GENERIC_TYPE repeat(ITERABLE KEY_GENERIC_TYPE iterable, int repeats) {
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return new RepeatingIterableBRACES(iterable, repeats);
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}
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/**
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* A Helper function that repeats the Iterable a specific amount of times from a Java Iterable
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* @param iterable that should be repeated
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* @param repeats the amount of times the iterable should be repeated
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* @Type(T)
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* @return a repeating iterable
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*/
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public static GENERIC_KEY_BRACES ITERABLE KEY_GENERIC_TYPE repeat(Iterable<? extends CLASS_TYPE> iterable, int repeats) {
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return new RepeatingIterableBRACES(wrap(iterable), repeats);
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}
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/**
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* A Helper function that hard limits the Iterable to a specific size
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* @param iterable that should be limited
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@ -320,6 +342,42 @@ public class ITERABLES
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}
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}
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private static class RepeatingIterable KEY_GENERIC_TYPE implements ITERABLE KEY_GENERIC_TYPE
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{
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ITERABLE KEY_GENERIC_TYPE iterable;
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int repeats;
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public RepeatingIterable(ITERABLE KEY_GENERIC_TYPE iterable, int repeats) {
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this.iterable = iterable;
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this.repeats = repeats;
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}
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@Override
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public ITERATOR KEY_GENERIC_TYPE iterator() {
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return ITERATORS.repeat(iterable.iterator(), repeats);
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}
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#if !TYPE_OBJECT
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@Override
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public void forEach(CONSUMER action) {
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Objects.requireNonNull(action);
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LIST KEY_GENERIC_TYPE list = new ARRAY_LISTBRACES();
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iterable.forEach(action.andThen(list::add));
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for(int i = 0;i<repeats;i++)
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list.forEach(action);
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}
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#else
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@Override
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public void forEach(Consumer<? super CLASS_TYPE> action) {
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Objects.requireNonNull(action);
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LIST KEY_GENERIC_TYPE list = new ARRAY_LISTBRACES();
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iterable.forEach(T -> {action.accept(T); list.add(T);});
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for(int i = 0;i<repeats;i++)
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list.forEach(action);
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}
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#endif
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}
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private static class FilteredIterable KEY_GENERIC_TYPE implements ITERABLE KEY_GENERIC_TYPE
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{
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ITERABLE KEY_GENERIC_TYPE iterable;
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@ -215,6 +215,28 @@ public class ITERATORS
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return new DistinctIteratorBRACES(wrap(iterator));
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}
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/**
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* A Helper function that repeats the Iterator a specific amount of times
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* @param iterator that should be repeated
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* @param repeats the amount of times the iterator should be repeated
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* @Type(T)
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* @return a repeating iterator
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*/
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public static GENERIC_KEY_BRACES ITERATOR KEY_GENERIC_TYPE repeat(ITERATOR KEY_GENERIC_TYPE iterator, int repeats) {
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return new RepeatingIteratorBRACES(iterator, repeats);
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}
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/**
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* A Helper function that repeats the Iterator a specific amount of times from a Java Iterator
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* @param iterator that should be repeated
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* @param repeats the amount of times the iterator should be repeated
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* @Type(T)
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* @return a repeating iterator
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*/
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public static GENERIC_KEY_BRACES ITERATOR KEY_GENERIC_TYPE repeat(Iterator<? extends CLASS_TYPE> iterator, int repeats) {
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return new RepeatingIteratorBRACES(wrap(iterator), repeats);
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}
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/**
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* A Helper function that hard limits the Iterator to a specific size
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* @param iterator that should be limited
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@ -898,6 +920,38 @@ public class ITERATORS
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}
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}
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private static class RepeatingIterator KEY_GENERIC_TYPE implements ITERATOR KEY_GENERIC_TYPE
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{
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final int repeats;
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int index = 0;
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ITERATOR KEY_GENERIC_TYPE iter;
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LIST KEY_GENERIC_TYPE list = new ARRAY_LISTBRACES();
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public RepeatingIterator(ITERATOR KEY_GENERIC_TYPE iter, int repeat) {
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this.iter = iter;
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this.repeats = repeat;
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}
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@Override
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public boolean hasNext() {
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if(iter.hasNext()) return true;
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if(index < repeats) {
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index++;
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iter = list.iterator();
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return iter.hasNext();
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}
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return false;
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}
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@Override
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public KEY_TYPE NEXT() {
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if(!hasNext()) throw new NoSuchElementException();
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KEY_TYPE value = iter.NEXT();
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if(index == 0) list.add(value);
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return value;
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}
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}
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private static class SortedIterator KEY_GENERIC_TYPE implements ITERATOR KEY_GENERIC_TYPE
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{
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ITERATOR KEY_GENERIC_TYPE iterator;
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@ -39,6 +39,7 @@ import speiger.src.testers.PACKAGE.tests.iterable.FILE_KEY_TYPEIterableMapTester
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import speiger.src.testers.PACKAGE.tests.iterable.FILE_KEY_TYPEIterableMatchesTester;
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import speiger.src.testers.PACKAGE.tests.iterable.FILE_KEY_TYPEIterablePeekTester;
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import speiger.src.testers.PACKAGE.tests.iterable.FILE_KEY_TYPEIterableReduceTester;
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import speiger.src.testers.PACKAGE.tests.iterable.FILE_KEY_TYPEIterableRepeatTester;
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import speiger.src.testers.PACKAGE.tests.iterable.FILE_KEY_TYPEIterableSortedTester;
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#endif
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@ -63,6 +64,7 @@ public class COLLECTION_TEST_BUILDER KEY_GENERIC_TYPE extends CollectionTestSuit
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testers.add(FILE_KEY_TYPEIterableMatchesTester.class);
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testers.add(FILE_KEY_TYPEIterablePeekTester.class);
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testers.add(FILE_KEY_TYPEIterableReduceTester.class);
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testers.add(FILE_KEY_TYPEIterableRepeatTester.class);
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testers.add(FILE_KEY_TYPEIterableCountTester.class);
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testers.add(FILE_KEY_TYPEIterableFindFirstTester.class);
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#endif
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@ -0,0 +1,27 @@
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package speiger.src.testers.PACKAGE.tests.iterable;
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import org.junit.Ignore;
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import com.google.common.collect.testing.features.CollectionSize;
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import speiger.src.collections.PACKAGE.lists.ARRAY_LIST;
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import speiger.src.collections.PACKAGE.lists.LIST;
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import speiger.src.testers.PACKAGE.tests.base.ABSTRACT_COLLECTION_TESTER;
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@Ignore
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@SuppressWarnings("javadoc")
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public class FILE_KEY_TYPEIterableRepeatTester KEY_GENERIC_TYPE extends ABSTRACT_COLLECTION_TESTER KEY_GENERIC_TYPE
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{
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#ignore
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@CollectionSize.Require(absent = CollectionSize.ZERO)
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#endignore
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public void testIterableRepeat() {
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LIST KEY_GENERIC_TYPE expected = new ARRAY_LISTBRACES();
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expected.addAll(collection);
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expected.addAll(collection);
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expected.addAll(collection);
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LIST KEY_GENERIC_TYPE result = collection.repeat(2).pourAsList();
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assertEquals(expected.size(), result.size());
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assertEquals("Repeat does not retain the iteration order", expected, result);
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}
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}
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