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Add helpers for serializing collections #95

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137 changes: 137 additions & 0 deletions runtime/src/main/java/org/capnproto/CollectionHelpers.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,137 @@
package org.capnproto;


import java.util.Collection;
import java.util.function.BiConsumer;
import java.util.function.Function;

public final class CollectionHelpers {
private CollectionHelpers() {}


public static <T, Capnp extends StructBuilder> void serializeCollection(
Collection<T> items,
Function<Integer, StructList.Builder<Capnp>> getListBuilder,
BiConsumer<T, Capnp> serializeItem) {
StructList.Builder<Capnp> listBuilder = getListBuilder.apply(items.size());

int i = 0;
for (T item : items) {
serializeItem.accept(item, listBuilder.get(i));
++i;
}
}

public static <T, Capnp extends StructBuilder> void serializeCollection(
T[] items,
Function<Integer, StructList.Builder<Capnp>> getListBuilder,
BiConsumer<T, Capnp> serializeItem) {
StructList.Builder<Capnp> listBuilder = getListBuilder.apply(items.length);

int i = 0;
for (T item : items) {
serializeItem.accept(item, listBuilder.get(i));
++i;
}
}

public static void serializeLongCollection(
Collection<Long> items,
Function<Integer, PrimitiveList.Long.Builder> getListBuilder) {
PrimitiveList.Long.Builder listBuilder = getListBuilder.apply(items.size());

int i = 0;
for (Long item : items) {
listBuilder.set(i, item);
++i;
}
}

public static <T> void serializeLongCollection(
Collection<T> items,
Function<Integer, PrimitiveList.Long.Builder> getListBuilder,
Function<T, Long> transform) {
PrimitiveList.Long.Builder listBuilder = getListBuilder.apply(items.size());

int i = 0;
for (T item : items) {
listBuilder.set(i, transform.apply(item));
++i;
}
}

public static void serializeLongCollection(
long[] items,
Function<Integer, PrimitiveList.Long.Builder> getListBuilder) {
PrimitiveList.Long.Builder listBuilder = getListBuilder.apply(items.length);

int i = 0;
for (long item : items) {
listBuilder.set(i, item);
++i;
}
}

public static void serializeIntCollection(
Collection<Integer> items,
Function<Integer, PrimitiveList.Int.Builder> getListBuilder) {
PrimitiveList.Int.Builder listBuilder = getListBuilder.apply(items.size());

int i = 0;
for (Integer item : items) {
listBuilder.set(i, item);
++i;
}
}

public static void serializeIntCollection(
int[] ints,
java.util.function.Function<Integer, PrimitiveList.Int.Builder> getListBuilder) {
PrimitiveList.Int.Builder listBuilder = getListBuilder.apply(ints.length);

int i = 0;
for (int item : ints) {
listBuilder.set(i, item);
++i;
}
}

public static void serializeIntCollection(
byte[] items,
java.util.function.Function<Integer, PrimitiveList.Int.Builder> getListBuilder) {
PrimitiveList.Int.Builder listBuilder = getListBuilder.apply(items.length);

int i = 0;
for (byte item : items) {
listBuilder.set(i, item);
++i;
}
}

public static <T> void serializeIntCollection(
T[] items,
java.util.function.Function<Integer, PrimitiveList.Int.Builder> getListBuilder,
java.util.function.Function<T, Integer> transform) {
PrimitiveList.Int.Builder listBuilder = getListBuilder.apply(items.length);

int i = 0;
for (T item : items) {
listBuilder.set(i, transform.apply(item));
++i;
}
}

public static <T> void serializeIntCollection(
Collection<T> collection,
java.util.function.Function<Integer, PrimitiveList.Int.Builder> getListBuilder,
java.util.function.Function<T, Integer> transform) {
PrimitiveList.Int.Builder listBuilder = getListBuilder.apply(collection.size());

int i = 0;
for (T item : collection) {
listBuilder.set(i, transform.apply(item));
++i;
}
}
}