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authorBenjamin J. Culkin <bjculkin@mix.wvu.edu>2017-10-08 22:39:59 -0300
committerBenjamin J. Culkin <bjculkin@mix.wvu.edu>2017-10-08 22:39:59 -0300
commitc82e3b3b2de0633317ec8fc85925e91422820597 (patch)
tree96567416ce23c5ce85601f9cedc3a94bb1c55cba /BJC-Utils2/src/main/java/bjc/utils/data/internals
parentb3ac1c8690c3e14c879913e5dcc03a5f5e14876e (diff)
Start splitting into maven modules
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/data/internals')
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazy.java145
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazyPair.java199
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundListHolder.java68
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java149
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/data/internals/WrappedLazy.java62
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/data/internals/WrappedOption.java76
6 files changed, 0 insertions, 699 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazy.java b/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazy.java
deleted file mode 100644
index f71d32b..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazy.java
+++ /dev/null
@@ -1,145 +0,0 @@
-package bjc.utils.data.internals;
-
-import java.util.function.Function;
-import java.util.function.Supplier;
-import java.util.function.UnaryOperator;
-
-import bjc.utils.data.IHolder;
-import bjc.utils.data.Lazy;
-import bjc.utils.funcdata.FunctionalList;
-import bjc.utils.funcdata.IList;
-
-/*
- * Implements a lazy holder that has been bound
- */
-public class BoundLazy<OldType, BoundContainedType> implements IHolder<BoundContainedType> {
- /*
- * The old value
- */
- private final Supplier<IHolder<OldType>> oldSupplier;
-
- /*
- * The function to use to transform the old value into a new value
- */
- private final Function<OldType, IHolder<BoundContainedType>> binder;
-
- /*
- * The bound value being held
- */
- private IHolder<BoundContainedType> boundHolder;
-
- /*
- * Whether the bound value has been actualized or not
- */
- private boolean holderBound;
-
- /*
- * Transformations currently pending on the bound value
- */
- private final IList<UnaryOperator<BoundContainedType>> actions = new FunctionalList<>();
-
- /*
- * Create a new bound lazy value
- */
- public BoundLazy(final Supplier<IHolder<OldType>> supp,
- final Function<OldType, IHolder<BoundContainedType>> binder) {
- oldSupplier = supp;
- this.binder = binder;
- }
-
- @Override
- public <BoundType> IHolder<BoundType> bind(final Function<BoundContainedType, IHolder<BoundType>> bindr) {
- if (bindr == null) throw new NullPointerException("Binder must not be null");
-
- /*
- * Prepare a list of pending actions
- */
- final IList<UnaryOperator<BoundContainedType>> pendingActions = new FunctionalList<>();
- actions.forEach(pendingActions::add);
-
- /*
- * Create the new supplier of a value
- */
- final Supplier<IHolder<BoundContainedType>> typeSupplier = () -> {
- IHolder<BoundContainedType> oldHolder = boundHolder;
-
- /*
- * Bind the value if it hasn't been bound before
- */
- if (!holderBound) {
- oldHolder = oldSupplier.get().unwrap(binder);
- }
-
- /*
- * Apply all the pending actions
- */
- return pendingActions.reduceAux(oldHolder, (action, state) -> {
- return state.transform(action);
- }, (value) -> value);
- };
-
- return new BoundLazy<>(typeSupplier, bindr);
- }
-
- @Override
- public <NewType> Function<BoundContainedType, IHolder<NewType>> lift(
- final 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));
- };
- }
-
- @Override
- public <MappedType> IHolder<MappedType> map(final Function<BoundContainedType, MappedType> mapper) {
- if (mapper == null) throw new NullPointerException("Mapper must not be null");
-
- // Prepare a list of pending actions
- final IList<UnaryOperator<BoundContainedType>> pendingActions = new FunctionalList<>();
- actions.forEach(pendingActions::add);
-
- // Prepare the new supplier
- final Supplier<MappedType> typeSupplier = () -> {
- IHolder<BoundContainedType> oldHolder = boundHolder;
-
- // Bound the value if it hasn't been bound
- if (!holderBound) {
- oldHolder = oldSupplier.get().unwrap(binder);
- }
-
- return pendingActions.reduceAux(oldHolder.getValue(), (action, state) -> {
- return action.apply(state);
- }, (value) -> mapper.apply(value));
- };
-
- return new Lazy<>(typeSupplier);
- }
-
- @Override
- public String toString() {
- if (holderBound) return boundHolder.toString();
-
- return "(unmaterialized)";
- }
-
- @Override
- public IHolder<BoundContainedType> transform(final UnaryOperator<BoundContainedType> transformer) {
- if (transformer == null) throw new NullPointerException("Transformer must not be null");
-
- actions.add(transformer);
-
- return this;
- }
-
- @Override
- public <UnwrappedType> UnwrappedType unwrap(final Function<BoundContainedType, UnwrappedType> unwrapper) {
- if (unwrapper == null) throw new NullPointerException("Unwrapper must not be null");
-
- if (!holderBound) {
- boundHolder = oldSupplier.get().unwrap(binder::apply);
- }
-
- return boundHolder.unwrap(unwrapper);
- }
-} \ No newline at end of file
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazyPair.java b/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazyPair.java
deleted file mode 100644
index df6e60b..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazyPair.java
+++ /dev/null
@@ -1,199 +0,0 @@
-package bjc.utils.data.internals;
-
-import java.util.function.BiFunction;
-import java.util.function.Function;
-import java.util.function.Supplier;
-
-import bjc.utils.data.IHolder;
-import bjc.utils.data.IPair;
-import bjc.utils.data.Identity;
-import bjc.utils.data.LazyPair;
-
-/*
- * Implements a lazy pair that has been bound
- */
-public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> implements IPair<NewLeft, NewRight> {
- /*
- * The supplier of the left value
- */
- private final Supplier<OldLeft> leftSupplier;
- /*
- * The supplier of the right value
- */
- private final Supplier<OldRight> rightSupplier;
-
- /*
- * The binder to transform values
- */
- private final BiFunction<OldLeft, OldRight, IPair<NewLeft, NewRight>> binder;
-
- /*
- * The bound pair
- */
- private IPair<NewLeft, NewRight> boundPair;
-
- /*
- * Whether the pair has been bound yet
- */
- private boolean pairBound;
-
- public BoundLazyPair(final Supplier<OldLeft> leftSupp, final Supplier<OldRight> rightSupp,
- final BiFunction<OldLeft, OldRight, IPair<NewLeft, NewRight>> bindr) {
- leftSupplier = leftSupp;
- rightSupplier = rightSupp;
- binder = bindr;
- }
-
- @Override
- public <BoundLeft, BoundRight> IPair<BoundLeft, BoundRight> bind(
- final BiFunction<NewLeft, NewRight, IPair<BoundLeft, BoundRight>> bindr) {
- if (bindr == null) throw new NullPointerException("Binder must not be null");
-
- final IHolder<IPair<NewLeft, NewRight>> newPair = new Identity<>(boundPair);
- final IHolder<Boolean> newPairMade = new Identity<>(pairBound);
-
- final Supplier<NewLeft> leftSupp = () -> {
- if (!newPairMade.getValue()) {
- newPair.replace(binder.apply(leftSupplier.get(), rightSupplier.get()));
-
- newPairMade.replace(true);
- }
-
- return newPair.unwrap((pair) -> pair.getLeft());
- };
-
- final Supplier<NewRight> rightSupp = () -> {
- if (!newPairMade.getValue()) {
- newPair.replace(binder.apply(leftSupplier.get(), rightSupplier.get()));
-
- newPairMade.replace(true);
- }
-
- return newPair.unwrap((pair) -> pair.getRight());
- };
-
- return new BoundLazyPair<>(leftSupp, rightSupp, bindr);
- }
-
- @Override
- public <BoundLeft> IPair<BoundLeft, NewRight> bindLeft(
- final Function<NewLeft, IPair<BoundLeft, NewRight>> leftBinder) {
- if (leftBinder == null) throw new NullPointerException("Left binder must not be null");
-
- final Supplier<NewLeft> leftSupp = () -> {
- IPair<NewLeft, NewRight> newPair = boundPair;
-
- if (!pairBound) {
- newPair = binder.apply(leftSupplier.get(), rightSupplier.get());
- }
-
- return newPair.getLeft();
- };
-
- return new HalfBoundLazyPair<>(leftSupp, leftBinder);
- }
-
- @Override
- public <BoundRight> IPair<NewLeft, BoundRight> bindRight(
- final Function<NewRight, IPair<NewLeft, BoundRight>> rightBinder) {
- if (rightBinder == null) throw new NullPointerException("Right binder must not be null");
-
- final Supplier<NewRight> rightSupp = () -> {
- IPair<NewLeft, NewRight> newPair = boundPair;
-
- if (!pairBound) {
- newPair = binder.apply(leftSupplier.get(), rightSupplier.get());
- }
-
- return newPair.getRight();
- };
-
- return new HalfBoundLazyPair<>(rightSupp, rightBinder);
- }
-
- @Override
- public <OtherLeft, OtherRight, CombinedLeft, CombinedRight> IPair<CombinedLeft, CombinedRight> combine(
- final IPair<OtherLeft, OtherRight> otherPair,
- final BiFunction<NewLeft, OtherLeft, CombinedLeft> leftCombiner,
- final BiFunction<NewRight, OtherRight, CombinedRight> rightCombiner) {
- if (otherPair == null)
- throw new NullPointerException("Other pair must not be null");
- else if (leftCombiner == null)
- throw new NullPointerException("Left combiner must not be null");
- else if (rightCombiner == null) throw new NullPointerException("Right combiner must not be null");
-
- return otherPair.bind((otherLeft, otherRight) -> {
- return bind((leftVal, rightVal) -> {
- return new LazyPair<>(leftCombiner.apply(leftVal, otherLeft),
- rightCombiner.apply(rightVal, otherRight));
- });
- });
- }
-
- @Override
- public <NewLeftType> IPair<NewLeftType, NewRight> mapLeft(final Function<NewLeft, NewLeftType> mapper) {
- if (mapper == null) throw new NullPointerException("Mapper must not be null");
-
- final Supplier<NewLeftType> leftSupp = () -> {
- if (!pairBound) {
- final NewLeft leftVal = binder.apply(leftSupplier.get(), rightSupplier.get()).getLeft();
-
- return mapper.apply(leftVal);
- }
-
- return mapper.apply(boundPair.getLeft());
- };
-
- final Supplier<NewRight> rightSupp = () -> {
- if (!pairBound) return binder.apply(leftSupplier.get(), rightSupplier.get()).getRight();
-
- return boundPair.getRight();
- };
-
- return new LazyPair<>(leftSupp, rightSupp);
- }
-
- @Override
- public <NewRightType> IPair<NewLeft, NewRightType> mapRight(final Function<NewRight, NewRightType> mapper) {
- if (mapper == null) throw new NullPointerException("Mapper must not be null");
-
- final Supplier<NewLeft> leftSupp = () -> {
- if (!pairBound) return binder.apply(leftSupplier.get(), rightSupplier.get()).getLeft();
-
- return boundPair.getLeft();
- };
-
- final Supplier<NewRightType> rightSupp = () -> {
- if (!pairBound) {
- final NewRight rightVal = binder.apply(leftSupplier.get(), rightSupplier.get())
- .getRight();
-
- return mapper.apply(rightVal);
- }
-
- return mapper.apply(boundPair.getRight());
- };
-
- return new LazyPair<>(leftSupp, rightSupp);
- }
-
- @Override
- public <MergedType> MergedType merge(final BiFunction<NewLeft, NewRight, MergedType> merger) {
- if (merger == null) throw new NullPointerException("Merger must not be null");
-
- if (!pairBound) {
- boundPair = binder.apply(leftSupplier.get(), rightSupplier.get());
-
- pairBound = true;
- }
-
- return boundPair.merge(merger);
- }
-
- @Override
- public String toString() {
- if (pairBound) return boundPair.toString();
-
- return "(un-materialized)";
- }
-} \ No newline at end of file
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundListHolder.java b/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundListHolder.java
deleted file mode 100644
index f3799fd..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundListHolder.java
+++ /dev/null
@@ -1,68 +0,0 @@
-package bjc.utils.data.internals;
-
-import java.util.function.Function;
-import java.util.function.UnaryOperator;
-
-import bjc.utils.data.IHolder;
-import bjc.utils.data.ListHolder;
-import bjc.utils.funcdata.IList;
-
-/*
- * Holds a list, converted into a holder
- */
-public class BoundListHolder<ContainedType> implements IHolder<ContainedType> {
- private final IList<IHolder<ContainedType>> heldHolders;
-
- public BoundListHolder(final IList<IHolder<ContainedType>> toHold) {
- heldHolders = toHold;
- }
-
- @Override
- public <BoundType> IHolder<BoundType> bind(final Function<ContainedType, IHolder<BoundType>> binder) {
- if (binder == null) throw new NullPointerException("Binder must not be null");
-
- final IList<IHolder<BoundType>> boundHolders = heldHolders.map((containedHolder) -> {
- return containedHolder.bind(binder);
- });
-
- return new BoundListHolder<>(boundHolders);
- }
-
- @Override
- public <NewType> Function<ContainedType, IHolder<NewType>> lift(final Function<ContainedType, NewType> func) {
- if (func == null) throw new NullPointerException("Function to lift must not be null");
-
- return (val) -> {
- return new ListHolder<>(func.apply(val));
- };
- }
-
- @Override
- public <MappedType> IHolder<MappedType> map(final Function<ContainedType, MappedType> mapper) {
- if (mapper == null) throw new NullPointerException("Mapper must not be null");
-
- final IList<IHolder<MappedType>> mappedHolders = heldHolders.map((containedHolder) -> {
- return containedHolder.map(mapper);
- });
-
- return new BoundListHolder<>(mappedHolders);
- }
-
- @Override
- public IHolder<ContainedType> transform(final UnaryOperator<ContainedType> transformer) {
- if (transformer == null) throw new NullPointerException("Transformer must not be null");
-
- heldHolders.forEach((containedHolder) -> {
- containedHolder.transform(transformer);
- });
-
- return this;
- }
-
- @Override
- public <UnwrappedType> UnwrappedType unwrap(final Function<ContainedType, UnwrappedType> unwrapper) {
- if (unwrapper == null) throw new NullPointerException("Unwrapper must not be null");
-
- return heldHolders.randItem().unwrap(unwrapper);
- }
-} \ No newline at end of file
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java b/BJC-Utils2/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java
deleted file mode 100644
index 8cac38b..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java
+++ /dev/null
@@ -1,149 +0,0 @@
-package bjc.utils.data.internals;
-
-import java.util.function.BiFunction;
-import java.util.function.Function;
-import java.util.function.Supplier;
-
-import bjc.utils.data.IHolder;
-import bjc.utils.data.IPair;
-import bjc.utils.data.Identity;
-import bjc.utils.data.LazyPair;
-
-/*
- * A lazy pair, with only one side bound
- */
-public class HalfBoundLazyPair<OldType, NewLeft, NewRight> implements IPair<NewLeft, NewRight> {
- private final Supplier<OldType> oldSupplier;
-
- private final Function<OldType, IPair<NewLeft, NewRight>> binder;
-
- private IPair<NewLeft, NewRight> boundPair;
- private boolean pairBound;
-
- public HalfBoundLazyPair(final Supplier<OldType> oldSupp,
- final Function<OldType, IPair<NewLeft, NewRight>> bindr) {
- oldSupplier = oldSupp;
- binder = bindr;
- }
-
- @Override
- public <BoundLeft, BoundRight> IPair<BoundLeft, BoundRight> bind(
- final BiFunction<NewLeft, NewRight, IPair<BoundLeft, BoundRight>> bindr) {
- final IHolder<IPair<NewLeft, NewRight>> newPair = new Identity<>(boundPair);
- final IHolder<Boolean> newPairMade = new Identity<>(pairBound);
-
- final Supplier<NewLeft> leftSupp = () -> {
- if (!newPairMade.getValue()) {
- newPair.replace(binder.apply(oldSupplier.get()));
- newPairMade.replace(true);
- }
-
- return newPair.unwrap((pair) -> pair.getLeft());
- };
-
- final Supplier<NewRight> rightSupp = () -> {
- if (!newPairMade.getValue()) {
- newPair.replace(binder.apply(oldSupplier.get()));
- newPairMade.replace(true);
- }
-
- return newPair.unwrap((pair) -> pair.getRight());
- };
-
- return new BoundLazyPair<>(leftSupp, rightSupp, bindr);
- }
-
- @Override
- public <BoundLeft> IPair<BoundLeft, NewRight> bindLeft(
- final Function<NewLeft, IPair<BoundLeft, NewRight>> leftBinder) {
- final Supplier<NewLeft> leftSupp = () -> {
- IPair<NewLeft, NewRight> newPair = boundPair;
-
- if (!pairBound) {
- newPair = binder.apply(oldSupplier.get());
- }
-
- return newPair.getLeft();
- };
-
- return new HalfBoundLazyPair<>(leftSupp, leftBinder);
- }
-
- @Override
- public <BoundRight> IPair<NewLeft, BoundRight> bindRight(
- final Function<NewRight, IPair<NewLeft, BoundRight>> rightBinder) {
- final Supplier<NewRight> rightSupp = () -> {
- IPair<NewLeft, NewRight> newPair = boundPair;
-
- if (!pairBound) {
- newPair = binder.apply(oldSupplier.get());
- }
-
- return newPair.getRight();
- };
-
- return new HalfBoundLazyPair<>(rightSupp, rightBinder);
- }
-
- @Override
- public <OtherLeft, OtherRight, CombinedLeft, CombinedRight> IPair<CombinedLeft, CombinedRight> combine(
- final IPair<OtherLeft, OtherRight> otherPair,
- final BiFunction<NewLeft, OtherLeft, CombinedLeft> leftCombiner,
- final BiFunction<NewRight, OtherRight, CombinedRight> rightCombiner) {
- return otherPair.bind((otherLeft, otherRight) -> {
- return bind((leftVal, rightVal) -> {
- return new LazyPair<>(leftCombiner.apply(leftVal, otherLeft),
- rightCombiner.apply(rightVal, otherRight));
- });
- });
- }
-
- @Override
- public <NewLeftType> IPair<NewLeftType, NewRight> mapLeft(final Function<NewLeft, NewLeftType> mapper) {
- final Supplier<NewLeftType> leftSupp = () -> {
- if (pairBound) return mapper.apply(boundPair.getLeft());
-
- final NewLeft leftVal = binder.apply(oldSupplier.get()).getLeft();
-
- return mapper.apply(leftVal);
- };
-
- final Supplier<NewRight> rightSupp = () -> {
- if (pairBound) return boundPair.getRight();
-
- return binder.apply(oldSupplier.get()).getRight();
- };
-
- return new LazyPair<>(leftSupp, rightSupp);
- }
-
- @Override
- public <NewRightType> IPair<NewLeft, NewRightType> mapRight(final Function<NewRight, NewRightType> mapper) {
- final Supplier<NewLeft> leftSupp = () -> {
- if (pairBound) return boundPair.getLeft();
-
- return binder.apply(oldSupplier.get()).getLeft();
- };
-
- final Supplier<NewRightType> rightSupp = () -> {
- if (pairBound) return mapper.apply(boundPair.getRight());
-
- final NewRight rightVal = binder.apply(oldSupplier.get()).getRight();
-
- return mapper.apply(rightVal);
- };
-
- return new LazyPair<>(leftSupp, rightSupp);
- }
-
- @Override
- public <MergedType> MergedType merge(final BiFunction<NewLeft, NewRight, MergedType> merger) {
- if (!pairBound) {
- boundPair = binder.apply(oldSupplier.get());
-
- pairBound = true;
- }
-
- return boundPair.merge(merger);
- }
-} \ No newline at end of file
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/internals/WrappedLazy.java b/BJC-Utils2/src/main/java/bjc/utils/data/internals/WrappedLazy.java
deleted file mode 100644
index 4175724..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/data/internals/WrappedLazy.java
+++ /dev/null
@@ -1,62 +0,0 @@
-package bjc.utils.data.internals;
-
-import java.util.function.Function;
-import java.util.function.UnaryOperator;
-
-import bjc.utils.data.IHolder;
-import bjc.utils.data.Lazy;
-
-public class WrappedLazy<ContainedType> implements IHolder<ContainedType> {
- private final IHolder<IHolder<ContainedType>> held;
-
- public WrappedLazy(final IHolder<ContainedType> wrappedHolder) {
- held = new Lazy<>(wrappedHolder);
- }
-
- // This has an extra parameter, because otherwise it erases to the same
- // as the public one
- private WrappedLazy(final IHolder<IHolder<ContainedType>> wrappedHolder, final boolean dummy) {
- held = wrappedHolder;
- }
-
- @Override
- public <BoundType> IHolder<BoundType> bind(final Function<ContainedType, IHolder<BoundType>> binder) {
- final IHolder<IHolder<BoundType>> newHolder = held.map((containedHolder) -> {
- return containedHolder.bind(binder);
- });
-
- return new WrappedLazy<>(newHolder, false);
- }
-
- @Override
- public <NewType> Function<ContainedType, IHolder<NewType>> lift(final Function<ContainedType, NewType> func) {
- return (val) -> {
- return new Lazy<>(func.apply(val));
- };
- }
-
- @Override
- public <MappedType> IHolder<MappedType> map(final Function<ContainedType, MappedType> mapper) {
- final IHolder<IHolder<MappedType>> newHolder = held.map((containedHolder) -> {
- return containedHolder.map(mapper);
- });
-
- return new WrappedLazy<>(newHolder, false);
- }
-
- @Override
- public IHolder<ContainedType> transform(final UnaryOperator<ContainedType> transformer) {
- held.transform((containedHolder) -> {
- return containedHolder.transform(transformer);
- });
-
- return this;
- }
-
- @Override
- public <UnwrappedType> UnwrappedType unwrap(final Function<ContainedType, UnwrappedType> unwrapper) {
- return held.unwrap((containedHolder) -> {
- return containedHolder.unwrap(unwrapper);
- });
- }
-}
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/internals/WrappedOption.java b/BJC-Utils2/src/main/java/bjc/utils/data/internals/WrappedOption.java
deleted file mode 100644
index 512c699..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/data/internals/WrappedOption.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package bjc.utils.data.internals;
-
-import java.util.function.Function;
-import java.util.function.UnaryOperator;
-
-import bjc.utils.data.IHolder;
-import bjc.utils.data.Option;
-
-public class WrappedOption<ContainedType> implements IHolder<ContainedType> {
- private final IHolder<IHolder<ContainedType>> held;
-
- public WrappedOption(final IHolder<ContainedType> seedValue) {
- held = new Option<>(seedValue);
- }
-
- private WrappedOption(final IHolder<IHolder<ContainedType>> toHold, final boolean dummy) {
- held = toHold;
- }
-
- @Override
- public <BoundType> IHolder<BoundType> bind(final Function<ContainedType, IHolder<BoundType>> binder) {
- final IHolder<IHolder<BoundType>> newHolder = held.map((containedHolder) -> {
- return containedHolder.bind((containedValue) -> {
- if (containedValue == null) return new Option<>(null);
-
- return binder.apply(containedValue);
- });
- });
-
- return new WrappedOption<>(newHolder, false);
- }
-
- @Override
- public <NewType> Function<ContainedType, IHolder<NewType>> lift(final Function<ContainedType, NewType> func) {
- return (val) -> {
- return new Option<>(func.apply(val));
- };
- }
-
- @Override
- public <MappedType> IHolder<MappedType> map(final Function<ContainedType, MappedType> mapper) {
- final IHolder<IHolder<MappedType>> newHolder = held.map((containedHolder) -> {
- return containedHolder.map((containedValue) -> {
- if (containedValue == null) return null;
-
- return mapper.apply(containedValue);
- });
- });
-
- return new WrappedOption<>(newHolder, false);
- }
-
- @Override
- public IHolder<ContainedType> transform(final UnaryOperator<ContainedType> transformer) {
- held.transform((containedHolder) -> {
- return containedHolder.transform((containedValue) -> {
- if (containedValue == null) return null;
-
- return transformer.apply(containedValue);
- });
- });
-
- return this;
- }
-
- @Override
- public <UnwrappedType> UnwrappedType unwrap(final Function<ContainedType, UnwrappedType> unwrapper) {
- return held.unwrap((containedHolder) -> {
- return containedHolder.unwrap((containedValue) -> {
- if (containedValue == null) return null;
-
- return unwrapper.apply(containedValue);
- });
- });
- }
-}