diff options
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/data/BoundLazy.java')
| -rw-r--r-- | BJC-Utils2/src/main/java/bjc/utils/data/BoundLazy.java | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/BoundLazy.java b/BJC-Utils2/src/main/java/bjc/utils/data/BoundLazy.java index d6f3b1d..b2ae7ce 100644 --- a/BJC-Utils2/src/main/java/bjc/utils/data/BoundLazy.java +++ b/BJC-Utils2/src/main/java/bjc/utils/data/BoundLazy.java @@ -7,7 +7,7 @@ import java.util.function.UnaryOperator; import bjc.utils.funcdata.FunctionalList; import bjc.utils.funcdata.IList; -/* +/** * Implements a lazy holder that has been bound */ class BoundLazy<OldType, BoundContainedType> @@ -35,8 +35,7 @@ class BoundLazy<OldType, BoundContainedType> /* * Transformations currently pending on the bound value */ - private IList<UnaryOperator< - BoundContainedType>> actions = new FunctionalList<>(); + private IList<UnaryOperator<BoundContainedType>> actions = new FunctionalList<>(); /* * Create a new bound lazy value @@ -50,11 +49,14 @@ class BoundLazy<OldType, BoundContainedType> @Override public <BoundType> IHolder<BoundType> bind( Function<BoundContainedType, IHolder<BoundType>> bindr) { + if (bindr == null) { + throw new NullPointerException("Binder must not be null"); + } + /* * Prepare a list of pending actions */ - IList<UnaryOperator< - BoundContainedType>> pendingActions = new FunctionalList<>(); + IList<UnaryOperator<BoundContainedType>> pendingActions = new FunctionalList<>(); actions.forEach(pendingActions::add); /* @@ -84,6 +86,11 @@ class BoundLazy<OldType, BoundContainedType> @Override public <NewType> Function<BoundContainedType, IHolder<NewType>> lift( Function<BoundContainedType, NewType> func) { + if (func == null) { + throw new NullPointerException( + "Function to lift must not be null"); + } + return (val) -> { return new Lazy<>(func.apply(val)); }; @@ -92,9 +99,12 @@ class BoundLazy<OldType, BoundContainedType> @Override public <MappedType> IHolder<MappedType> map( Function<BoundContainedType, MappedType> mapper) { + if (mapper == null) { + throw new NullPointerException("Mapper must not be null"); + } + // Prepare a list of pending actions - IList<UnaryOperator< - BoundContainedType>> pendingActions = new FunctionalList<>(); + IList<UnaryOperator<BoundContainedType>> pendingActions = new FunctionalList<>(); actions.forEach(pendingActions::add); // Prepare the new supplier @@ -127,6 +137,10 @@ class BoundLazy<OldType, BoundContainedType> @Override public IHolder<BoundContainedType> transform( UnaryOperator<BoundContainedType> transformer) { + if (transformer == null) { + throw new NullPointerException("Transformer must not be null"); + } + actions.add(transformer); return this; @@ -135,6 +149,10 @@ class BoundLazy<OldType, BoundContainedType> @Override public <UnwrappedType> UnwrappedType unwrap( Function<BoundContainedType, UnwrappedType> unwrapper) { + if (unwrapper == null) { + throw new NullPointerException("Unwrapper must not be null"); + } + if (!holderBound) { boundHolder = oldSupplier.get().unwrap(binder::apply); } |