From 002516bd03b2ea3f731c8139c9a5f716902ab702 Mon Sep 17 00:00:00 2001
From: Ben Culkin <scorpress@gmail.com>
Date: Tue, 7 Apr 2020 21:03:53 -0400
Subject: Finish remove utils.data

utils.data now lives in the esodata project; not in this one
---
 .../utils/data/internals/HalfBoundLazyPair.java    | 177 ---------------------
 1 file changed, 177 deletions(-)
 delete mode 100644 base/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java

(limited to 'base/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java')

diff --git a/base/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java b/base/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java
deleted file mode 100644
index 4803bc2..0000000
--- a/base/src/main/java/bjc/utils/data/internals/HalfBoundLazyPair.java
+++ /dev/null
@@ -1,177 +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;
-
-/*
- * @NOTE
- * 	I am not convinced that this code works correctly. Tests should be
- * 	written to make sure things only ever get instantiated once.
- *
- * 	Namely, my main concern is to whether the places that bind the pair
- * 	without setting pairBound are doing the right thing.
- */
-/**
- * A lazy pair, with only one side bound.
- *
- * @author Ben Culkin
- */
-@SuppressWarnings("javadoc")
-public class HalfBoundLazyPair<OldType, NewLeft, NewRight> implements IPair<NewLeft, NewRight> {
-	/* The supplier of the old value. */
-	private final Supplier<OldType> oldSupplier;
-
-	/* The function to transform the old value into a new pair. */
-	private final Function<OldType, IPair<NewLeft, NewRight>> binder;
-
-	/* The new bound pair. */
-	private IPair<NewLeft, NewRight> boundPair;
-	/* Has the pair been bound yet or not? */
-	private boolean pairBound;
-
-	/**
-	 * Create a new half-bound lazy pair.
-	 *
-	 * @param oldSupp
-	 *        The supplier of the old value.
-	 *
-	 * @param bindr
-	 *        The function to use to create the pair from the old value.
-	 */
-	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()) {
-				/* Bind the pair if it hasn't been bound yet. */
-				newPair.replace(binder.apply(oldSupplier.get()));
-				newPairMade.replace(true);
-			}
-
-			return newPair.unwrap((pair) -> pair.getLeft());
-		};
-
-		final Supplier<NewRight> rightSupp = () -> {
-			if(!newPairMade.getValue()) {
-				/* Bind the pair if it hasn't been bound yet. */
-				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) -> {
-				CombinedLeft cLeft = leftCombiner.apply(leftVal, otherLeft);
-				CombinedRight cRight = rightCombiner.apply(rightVal, otherRight);
-
-				return new LazyPair<>(cLeft, cRight);
-			});
-		});
-	}
-
-	@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);
-	}
-}
-- 
cgit v1.2.3