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Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/data/Either.java')
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/data/Either.java64
1 files changed, 20 insertions, 44 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/Either.java b/BJC-Utils2/src/main/java/bjc/utils/data/Either.java
index 7ec1720..d34f752 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/data/Either.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/data/Either.java
@@ -5,7 +5,7 @@ import java.util.function.Function;
/**
* Represents a pair where only one side has a value
- *
+ *
* @author ben
* @param <LeftType>
* The type that could be on the left
@@ -16,7 +16,7 @@ import java.util.function.Function;
public class Either<LeftType, RightType> implements IPair<LeftType, RightType> {
/**
* Create a new either with the left value occupied
- *
+ *
* @param <LeftType>
* The type of the left value
* @param <RightType>
@@ -31,7 +31,7 @@ public class Either<LeftType, RightType> implements IPair<LeftType, RightType> {
/**
* Create a new either with the right value occupied
- *
+ *
* @param <LeftType>
* The type of the empty left value
* @param <RightType>
@@ -51,7 +51,7 @@ public class Either<LeftType, RightType> implements IPair<LeftType, RightType> {
private boolean isLeft;
private Either(LeftType left, RightType right) {
- if (left == null) {
+ if(left == null) {
rightVal = right;
} else {
leftVal = left;
@@ -63,9 +63,7 @@ public class Either<LeftType, RightType> implements IPair<LeftType, RightType> {
@Override
public <BoundLeft, BoundRight> IPair<BoundLeft, BoundRight> bind(
BiFunction<LeftType, RightType, IPair<BoundLeft, BoundRight>> binder) {
- if (binder == null) {
- throw new NullPointerException("Binder must not be null");
- }
+ if(binder == null) throw new NullPointerException("Binder must not be null");
return binder.apply(leftVal, rightVal);
}
@@ -73,13 +71,9 @@ public class Either<LeftType, RightType> implements IPair<LeftType, RightType> {
@Override
public <BoundLeft> IPair<BoundLeft, RightType> bindLeft(
Function<LeftType, IPair<BoundLeft, RightType>> leftBinder) {
- if (leftBinder == null) {
- throw new NullPointerException("Left binder must not be null");
- }
+ if(leftBinder == null) throw new NullPointerException("Left binder must not be null");
- if (isLeft) {
- return leftBinder.apply(leftVal);
- }
+ if(isLeft) return leftBinder.apply(leftVal);
return new Either<>(null, rightVal);
}
@@ -87,13 +81,9 @@ public class Either<LeftType, RightType> implements IPair<LeftType, RightType> {
@Override
public <BoundRight> IPair<LeftType, BoundRight> bindRight(
Function<RightType, IPair<LeftType, BoundRight>> rightBinder) {
- if (rightBinder == null) {
- throw new NullPointerException("Right binder must not be null");
- }
+ if(rightBinder == null) throw new NullPointerException("Right binder must not be null");
- if (isLeft) {
- return new Either<>(leftVal, null);
- }
+ if(isLeft) return new Either<>(leftVal, null);
return rightBinder.apply(rightVal);
}
@@ -103,19 +93,15 @@ public class Either<LeftType, RightType> implements IPair<LeftType, RightType> {
IPair<OtherLeft, OtherRight> otherPair,
BiFunction<LeftType, OtherLeft, CombinedLeft> leftCombiner,
BiFunction<RightType, OtherRight, CombinedRight> rightCombiner) {
- if (otherPair == null) {
+ if(otherPair == null)
throw new NullPointerException("Other pair must not be null");
- } else if (leftCombiner == 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");
- }
+ else if(rightCombiner == null) throw new NullPointerException("Right combiner must not be null");
- if (isLeft) {
- return otherPair.bind((otherLeft, otherRight) -> {
- return new Either<>(leftCombiner.apply(leftVal, otherLeft), null);
- });
- }
+ if(isLeft) return otherPair.bind((otherLeft, otherRight) -> {
+ return new Either<>(leftCombiner.apply(leftVal, otherLeft), null);
+ });
return otherPair.bind((otherLeft, otherRight) -> {
return new Either<>(null, rightCombiner.apply(rightVal, otherRight));
@@ -124,35 +110,25 @@ public class Either<LeftType, RightType> implements IPair<LeftType, RightType> {
@Override
public <NewLeft> IPair<NewLeft, RightType> mapLeft(Function<LeftType, NewLeft> mapper) {
- if (mapper == null) {
- throw new NullPointerException("Mapper must not be null");
- }
+ if(mapper == null) throw new NullPointerException("Mapper must not be null");
- if (isLeft) {
- return new Either<>(mapper.apply(leftVal), null);
- }
+ if(isLeft) return new Either<>(mapper.apply(leftVal), null);
return new Either<>(null, rightVal);
}
@Override
public <NewRight> IPair<LeftType, NewRight> mapRight(Function<RightType, NewRight> mapper) {
- if (mapper == null) {
- throw new NullPointerException("Mapper must not be null");
- }
+ if(mapper == null) throw new NullPointerException("Mapper must not be null");
- if (isLeft) {
- return new Either<>(leftVal, null);
- }
+ if(isLeft) return new Either<>(leftVal, null);
return new Either<>(null, mapper.apply(rightVal));
}
@Override
public <MergedType> MergedType merge(BiFunction<LeftType, RightType, MergedType> merger) {
- if (merger == null) {
- throw new NullPointerException("Merger must not be null");
- }
+ if(merger == null) throw new NullPointerException("Merger must not be null");
return merger.apply(leftVal, rightVal);
}