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/*
* Roughly Enough Items by Danielshe.
* Licensed under the MIT License.
*/
package me.shedaniel.rei.utils;
import me.shedaniel.rei.api.EntryStack;
import me.shedaniel.rei.api.annotations.Internal;
import java.util.*;
import java.util.function.Function;
import java.util.function.Predicate;
@Internal
public class CollectionUtils {
public static final <T> T findFirstOrNullEquals(List<T> list, T obj) {
for (T t : list) {
if (t.equals(obj))
return t;
}
return null;
}
public static final <T> T findFirstOrNull(List<T> list, Predicate<T> predicate) {
for (T t : list) {
if (predicate.test(t))
return t;
}
return null;
}
public static final <T> boolean anyMatch(List<T> list, Predicate<T> predicate) {
for (T t : list) {
if (predicate.test(t))
return true;
}
return false;
}
public static final boolean anyMatchEqualsAll(List<EntryStack> list, EntryStack stack) {
for (EntryStack t : list) {
if (t.equalsAll(stack))
return true;
}
return false;
}
public static final <T> List<T> filter(List<T> list, Predicate<T> predicate) {
List<T> l = new LinkedList<>();
for (T t : list) {
if (predicate.test(t)) {
l.add(t);
}
}
return l;
}
public static final <T, R> List<R> map(List<T> list, Function<T, R> function) {
List<R> l = new LinkedList<>();
for (T t : list) {
l.add(function.apply(t));
}
return l;
}
public static final <T, R> List<R> map(T[] list, Function<T, R> function) {
List<R> l = new LinkedList<>();
for (T t : list) {
l.add(function.apply(t));
}
return l;
}
public static final <T, R> Optional<R> mapAndMax(List<T> list, Function<T, R> function, Comparator<R> comparator) {
if (list.isEmpty())
return Optional.empty();
List<R> copyOf = CollectionUtils.map(list, function);
copyOf.sort(comparator);
return Optional.ofNullable(copyOf.get(copyOf.size() - 1));
}
public static final <T, R> Optional<R> mapAndMax(T[] list, Function<T, R> function, Comparator<R> comparator) {
if (list.length <= 0)
return Optional.empty();
List<R> copyOf = CollectionUtils.map(list, function);
copyOf.sort(comparator);
return Optional.ofNullable(copyOf.get(copyOf.size() - 1));
}
public static final <T> Optional<T> max(List<T> list, Comparator<T> comparator) {
if (list.isEmpty())
return Optional.empty();
ArrayList<T> ts = new ArrayList<>(list);
ts.sort(comparator);
return Optional.ofNullable(ts.get(ts.size() - 1));
}
public static final <T> Optional<T> max(T[] list, Comparator<T> comparator) {
if (list.length <= 0)
return Optional.empty();
T[] copyOf = list.clone();
Arrays.sort(copyOf, comparator);
return Optional.ofNullable(copyOf[copyOf.length - 1]);
}
public static final String joinToString(List<String> list, String separator) {
StringJoiner joiner = new StringJoiner(separator);
for (String t : list) {
joiner.add(t);
}
return joiner.toString();
}
public static final String joinToString(String[] list, String separator) {
StringJoiner joiner = new StringJoiner(separator);
for (String t : list) {
joiner.add(t);
}
return joiner.toString();
}
public static final <T> String mapAndJoinToString(List<T> list, Function<T, String> function, String separator) {
StringJoiner joiner = new StringJoiner(separator);
for (T t : list) {
joiner.add(function.apply(t));
}
return joiner.toString();
}
public static final <T> String mapAndJoinToString(T[] list, Function<T, String> function, String separator) {
StringJoiner joiner = new StringJoiner(separator);
for (T t : list) {
joiner.add(function.apply(t));
}
return joiner.toString();
}
public static final <T, R> List<R> filterAndMap(List<T> list, Predicate<T> predicate, Function<T, R> function) {
List<R> l = null;
for (T t : list) {
if (predicate.test(t)) {
if (l == null) l = new LinkedList<>();
l.add(function.apply(t));
}
}
return l == null ? Collections.emptyList() : l;
}
public static final <T> int sumInt(List<T> list, Function<T, Integer> function) {
int sum = 0;
for (T t : list) {
sum += function.apply(t);
}
return sum;
}
public static final <T> int sumInt(List<Integer> list) {
int sum = 0;
for (int t : list) {
sum += t;
}
return sum;
}
public static final <T> double sumDouble(List<T> list, Function<T, Double> function) {
double sum = 0;
for (T t : list) {
sum += function.apply(t);
}
return sum;
}
public static final <T> double sumDouble(List<Double> list) {
double sum = 0;
for (double t : list) {
sum += t;
}
return sum;
}
}
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