From c82e3b3b2de0633317ec8fc85925e91422820597 Mon Sep 17 00:00:00 2001
From: "Benjamin J. Culkin" <bjculkin@mix.wvu.edu>
Date: Sun, 8 Oct 2017 22:39:59 -0300
Subject: Start splitting into maven modules

---
 .../java/bjc/utils/data/internals/WrappedLazy.java | 62 ++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 base/src/main/java/bjc/utils/data/internals/WrappedLazy.java

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

diff --git a/base/src/main/java/bjc/utils/data/internals/WrappedLazy.java b/base/src/main/java/bjc/utils/data/internals/WrappedLazy.java
new file mode 100644
index 0000000..4175724
--- /dev/null
+++ b/base/src/main/java/bjc/utils/data/internals/WrappedLazy.java
@@ -0,0 +1,62 @@
+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);
+		});
+	}
+}
-- 
cgit v1.2.3