forked from Speiger/Primitive-Collections
Added Safty methods and test into IObjectArray to reduce crashes.
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@ -556,6 +556,16 @@ public class ARRAY_LIST KEY_GENERIC_TYPE extends ABSTRACT_LIST KEY_GENERIC_TYPE
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return data;
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}
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#if TYPE_OBJECT
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/**
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* @return if the array is castable
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*/
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@Override
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public boolean isCastable() {
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return data.getClass() != Object[].class;
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}
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#endif
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/**
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* A Type Specific foreach function that reduces (un)boxing
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*
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@ -19,13 +19,22 @@ public interface IARRAY KEY_GENERIC_TYPE extends IArray
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*/
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public KEY_TYPE[] elements();
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#if TYPE_OBJECT
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/**
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* Method to indicate if the function is save to use
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* @return true if the object is castable to the type that is requested
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*/
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public boolean isCastable();
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#endif
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/**
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* Provides the Underlying Array in the Implementation. This function exists purely because of Synchronization wrappers to help run Synchronized Code
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* @param action the action that handles the array
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* @throws NullPointerException if action is null
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* @throws ClassCastException if the return type does not match the underlying array. (Only for Object Implementations)
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*/
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public default void elements(Consumer<KEY_TYPE[]> action) {
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#if TYPE_OBJECT
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if(!isCastable()) return;
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#endif
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Objects.requireNonNull(action);
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action.accept(elements());
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}
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@ -149,11 +149,16 @@ public class LISTS
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@Override
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public KEY_TYPE[] elements() { synchronized(mutex) { return l.elements(); } }
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#if TYPE_OBJECT
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@Override
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public boolean isCastable() { synchronized(mutex) { return l.isCastable(); } }
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#endif
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@Override
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public void elements(Consumer<KEY_TYPE[]> action) {
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Objects.requireNonNull(action);
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synchronized(mutex) {
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action.accept(elements());
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l.elements(action);
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}
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}
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}
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@ -0,0 +1,33 @@
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package speiger.src.collections.objects.list;
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import java.util.concurrent.atomic.AtomicInteger;
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import org.junit.Assert;
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import org.junit.Test;
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import speiger.src.collections.objects.lists.ObjectArrayList;
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import speiger.src.collections.objects.utils.IObjectArray;
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@SuppressWarnings("javadoc")
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public class ObjectArrayListTest
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{
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@Test
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public void testCastable()
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{
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ObjectArrayList<String> list = new ObjectArrayList<>();
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list.add("Test");
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list.add("Testing");
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list.add("Testing stuff");
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testCastable(list, false);
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testCastable(ObjectArrayList.wrap("Test", "Testing", "Testing stuff"), true);
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}
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public <T> void testCastable(IObjectArray<T> castable, boolean result)
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{
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Assert.assertTrue(castable.isCastable() == result);
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AtomicInteger amount = new AtomicInteger();
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castable.elements(T -> amount.set(T.length));
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Assert.assertTrue(amount.get() > 0 == result);
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}
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}
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