diff options
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazyPair.java')
| -rw-r--r-- | BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazyPair.java | 71 |
1 files changed, 24 insertions, 47 deletions
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 index 977fb37..d425d99 100644 --- a/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazyPair.java +++ b/BJC-Utils2/src/main/java/bjc/utils/data/internals/BoundLazyPair.java @@ -12,34 +12,32 @@ import bjc.utils.data.LazyPair; /** * Implements a lazy pair that has been bound */ -public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> - implements IPair<NewLeft, NewRight> { +public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> implements IPair<NewLeft, NewRight> { /* * The supplier of the left value */ - private Supplier<OldLeft> leftSupplier; + private Supplier<OldLeft> leftSupplier; /* * The supplier of the right value */ - private Supplier<OldRight> rightSupplier; + private Supplier<OldRight> rightSupplier; /* * The binder to transform values */ - private BiFunction<OldLeft, OldRight, IPair<NewLeft, NewRight>> binder; + private BiFunction<OldLeft, OldRight, IPair<NewLeft, NewRight>> binder; /* * The bound pair */ - private IPair<NewLeft, NewRight> boundPair; + private IPair<NewLeft, NewRight> boundPair; /* * Whether the pair has been bound yet */ - private boolean pairBound; + private boolean pairBound; - public BoundLazyPair(Supplier<OldLeft> leftSupp, - Supplier<OldRight> rightSupp, + public BoundLazyPair(Supplier<OldLeft> leftSupp, Supplier<OldRight> rightSupp, BiFunction<OldLeft, OldRight, IPair<NewLeft, NewRight>> bindr) { leftSupplier = leftSupp; rightSupplier = rightSupp; @@ -53,14 +51,12 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> throw new NullPointerException("Binder must not be null"); } - IHolder<IPair<NewLeft, NewRight>> newPair = new Identity<>( - boundPair); + IHolder<IPair<NewLeft, NewRight>> newPair = new Identity<>(boundPair); IHolder<Boolean> newPairMade = new Identity<>(pairBound); Supplier<NewLeft> leftSupp = () -> { if (!newPairMade.getValue()) { - newPair.replace(binder.apply(leftSupplier.get(), - rightSupplier.get())); + newPair.replace(binder.apply(leftSupplier.get(), rightSupplier.get())); newPairMade.replace(true); } @@ -70,8 +66,7 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> Supplier<NewRight> rightSupp = () -> { if (!newPairMade.getValue()) { - newPair.replace(binder.apply(leftSupplier.get(), - rightSupplier.get())); + newPair.replace(binder.apply(leftSupplier.get(), rightSupplier.get())); newPairMade.replace(true); } @@ -93,8 +88,7 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> IPair<NewLeft, NewRight> newPair = boundPair; if (!pairBound) { - newPair = binder.apply(leftSupplier.get(), - rightSupplier.get()); + newPair = binder.apply(leftSupplier.get(), rightSupplier.get()); } return newPair.getLeft(); @@ -107,16 +101,14 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> public <BoundRight> IPair<NewLeft, BoundRight> bindRight( Function<NewRight, IPair<NewLeft, BoundRight>> rightBinder) { if (rightBinder == null) { - throw new NullPointerException( - "Right binder must not be null"); + throw new NullPointerException("Right binder must not be null"); } Supplier<NewRight> rightSupp = () -> { IPair<NewLeft, NewRight> newPair = boundPair; if (!pairBound) { - newPair = binder.apply(leftSupplier.get(), - rightSupplier.get()); + newPair = binder.apply(leftSupplier.get(), rightSupplier.get()); } return newPair.getRight(); @@ -133,34 +125,28 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> 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"); + throw new NullPointerException("Left combiner must not be null"); } else if (rightCombiner == null) { - throw new NullPointerException( - "Right combiner must not be 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), + return new LazyPair<>(leftCombiner.apply(leftVal, otherLeft), rightCombiner.apply(rightVal, otherRight)); }); }); } @Override - public <NewLeftType> IPair<NewLeftType, NewRight> mapLeft( - Function<NewLeft, NewLeftType> mapper) { + public <NewLeftType> IPair<NewLeftType, NewRight> mapLeft(Function<NewLeft, NewLeftType> mapper) { if (mapper == null) { throw new NullPointerException("Mapper must not be null"); } Supplier<NewLeftType> leftSupp = () -> { if (!pairBound) { - NewLeft leftVal = binder - .apply(leftSupplier.get(), rightSupplier.get()) - .getLeft(); + NewLeft leftVal = binder.apply(leftSupplier.get(), rightSupplier.get()).getLeft(); return mapper.apply(leftVal); } @@ -170,9 +156,7 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> Supplier<NewRight> rightSupp = () -> { if (!pairBound) { - return binder - .apply(leftSupplier.get(), rightSupplier.get()) - .getRight(); + return binder.apply(leftSupplier.get(), rightSupplier.get()).getRight(); } return boundPair.getRight(); @@ -182,17 +166,14 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> } @Override - public <NewRightType> IPair<NewLeft, NewRightType> mapRight( - Function<NewRight, NewRightType> mapper) { + public <NewRightType> IPair<NewLeft, NewRightType> mapRight(Function<NewRight, NewRightType> mapper) { if (mapper == null) { throw new NullPointerException("Mapper must not be null"); } Supplier<NewLeft> leftSupp = () -> { if (!pairBound) { - return binder - .apply(leftSupplier.get(), rightSupplier.get()) - .getLeft(); + return binder.apply(leftSupplier.get(), rightSupplier.get()).getLeft(); } return boundPair.getLeft(); @@ -200,9 +181,7 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> Supplier<NewRightType> rightSupp = () -> { if (!pairBound) { - NewRight rightVal = binder - .apply(leftSupplier.get(), rightSupplier.get()) - .getRight(); + NewRight rightVal = binder.apply(leftSupplier.get(), rightSupplier.get()).getRight(); return mapper.apply(rightVal); } @@ -214,15 +193,13 @@ public class BoundLazyPair<OldLeft, OldRight, NewLeft, NewRight> } @Override - public <MergedType> MergedType merge( - BiFunction<NewLeft, NewRight, MergedType> merger) { + public <MergedType> MergedType merge(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()); + boundPair = binder.apply(leftSupplier.get(), rightSupplier.get()); pairBound = true; } |