diff options
| author | Ben Culkin <scorpress@gmail.com> | 2020-04-07 21:03:53 -0400 |
|---|---|---|
| committer | Ben Culkin <scorpress@gmail.com> | 2020-04-07 21:03:53 -0400 |
| commit | 002516bd03b2ea3f731c8139c9a5f716902ab702 (patch) | |
| tree | 4b45260e0b411dd070ae5d2f45e8f2795bf91b79 /base/src/main/java/bjc/utils/data/ListHolder.java | |
| parent | d6afd99961aacd6ce915629773723cb6c6e145a7 (diff) | |
Finish remove utils.data
utils.data now lives in the esodata project; not in this one
Diffstat (limited to 'base/src/main/java/bjc/utils/data/ListHolder.java')
| -rw-r--r-- | base/src/main/java/bjc/utils/data/ListHolder.java | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/base/src/main/java/bjc/utils/data/ListHolder.java b/base/src/main/java/bjc/utils/data/ListHolder.java deleted file mode 100644 index dbcdf6e..0000000 --- a/base/src/main/java/bjc/utils/data/ListHolder.java +++ /dev/null @@ -1,105 +0,0 @@ -package bjc.utils.data; - -import java.util.function.Function; -import java.util.function.UnaryOperator; - -import bjc.utils.data.internals.BoundListHolder; -import bjc.utils.funcdata.FunctionalList; -import bjc.utils.funcdata.IList; - -/** - * A holder that represents a set of non-deterministic computations. - * - * @author ben - * - * @param <ContainedType> - * The type of contained value. - */ -public class ListHolder<ContainedType> implements IHolder<ContainedType> { - private IList<ContainedType> heldValues; - - /** - * Create a new list holder. - * - * @param values - * The possible values for the computation. - */ - @SafeVarargs - public ListHolder(final ContainedType... values) { - heldValues = new FunctionalList<>(); - - if(values != null) { - for(final ContainedType containedValue : values) { - heldValues.add(containedValue); - } - } - } - - /* Create a new holder with values. */ - private ListHolder(final IList<ContainedType> toHold) { - heldValues = toHold; - } - - @Override - public <BoundType> IHolder<BoundType> bind(final Function<ContainedType, IHolder<BoundType>> binder) { - final IList<IHolder<BoundType>> boundValues = heldValues.map(binder); - - return new BoundListHolder<>(boundValues); - } - - @Override - public <NewType> Function<ContainedType, IHolder<NewType>> lift(final Function<ContainedType, NewType> func) { - return val -> { - return new ListHolder<>(new FunctionalList<>(func.apply(val))); - }; - } - - @Override - public <MappedType> IHolder<MappedType> map(final Function<ContainedType, MappedType> mapper) { - final IList<MappedType> mappedValues = heldValues.map(mapper); - - return new ListHolder<>(mappedValues); - } - - @Override - public IHolder<ContainedType> transform(final UnaryOperator<ContainedType> transformer) { - heldValues = heldValues.map(transformer); - - return this; - } - - @Override - public <UnwrappedType> UnwrappedType unwrap(final Function<ContainedType, UnwrappedType> unwrapper) { - return unwrapper.apply(heldValues.randItem()); - } - - @Override - public String toString() { - return String.format("ListHolder [heldValues=%s]", heldValues); - } - - @Override - public int hashCode() { - final int prime = 31; - int result = 1; - - result = prime * result + (heldValues == null ? 0 : heldValues.hashCode()); - - return result; - } - - @Override - public boolean equals(final Object obj) { - if(this == obj) return true; - if(obj == null) return false; - if(!(obj instanceof ListHolder<?>)) return false; - - final ListHolder<?> other = (ListHolder<?>) obj; - - if(heldValues == null) { - if(other.heldValues != null) return false; - } else if(!heldValues.equals(other.heldValues)) return false; - - return true; - } -} |
