gson-compile/gson-compile-processor/src/main/java/io/gitlab/jfronny/gson/compile/processor/util/DelegateList.java

package io.gitlab.jfronny.gson.compile.processor.util;

import org.jetbrains.annotations.NotNull;

import java.util.*;
import java.util.function.*;
import java.util.stream.Stream;

public class DelegateList<T> implements List<T> {
    private final List<T> delegate;

    public DelegateList(List<T> delegate) {
        Objects.requireNonNull(delegate);
        this.delegate = delegate instanceof DelegateList<T> dl ? dl.unwrap() : delegate;
    }

    @Override
    public int size() {
        return delegate.size();
    }

    @Override
    public boolean isEmpty() {
        return delegate.isEmpty();
    }

    @Override
    public boolean contains(Object o) {
        return delegate.contains(o);
    }

    @NotNull
    @Override
    public Iterator<T> iterator() {
        return delegate.iterator();
    }

    @Override
    public void forEach(Consumer<? super T> action) {
        delegate.forEach(action);
    }

    @NotNull
    @Override
    public Object[] toArray() {
        return delegate.toArray();
    }

    @NotNull
    @Override
    public <T1> T1[] toArray(@NotNull T1[] t1s) {
        return delegate.toArray(t1s);
    }

    @Override
    public <T1> T1[] toArray(IntFunction<T1[]> generator) {
        return delegate.toArray(generator);
    }

    @Override
    public boolean add(T t) {
        return delegate.add(t);
    }

    @Override
    public boolean remove(Object o) {
        return delegate.remove(o);
    }

    @Override
    public boolean containsAll(@NotNull Collection<?> collection) {
        return delegate.containsAll(collection);
    }

    @Override
    public boolean addAll(@NotNull Collection<? extends T> collection) {
        return delegate.addAll(collection);
    }

    @Override
    public boolean addAll(int i, @NotNull Collection<? extends T> collection) {
        return delegate.addAll(i, collection);
    }

    @Override
    public boolean removeAll(@NotNull Collection<?> collection) {
        return delegate.removeAll(collection);
    }

    @Override
    public boolean removeIf(Predicate<? super T> filter) {
        return delegate.removeIf(filter);
    }

    @Override
    public boolean retainAll(@NotNull Collection<?> collection) {
        return delegate.retainAll(collection);
    }

    @Override
    public void replaceAll(UnaryOperator<T> operator) {
        delegate.replaceAll(operator);
    }

    @Override
    public void sort(Comparator<? super T> c) {
        delegate.sort(c);
    }

    @Override
    public void clear() {
        delegate.clear();
    }

    @Override
    public T get(int i) {
        return delegate.get(i);
    }

    @Override
    public T set(int i, T t) {
        return delegate.set(i, t);
    }

    @Override
    public void add(int i, T t) {
        delegate.add(i, t);
    }

    @Override
    public T remove(int i) {
        return delegate.remove(i);
    }

    @Override
    public int indexOf(Object o) {
        return delegate.indexOf(o);
    }

    @Override
    public int lastIndexOf(Object o) {
        return delegate.lastIndexOf(o);
    }

    @NotNull
    @Override
    public ListIterator<T> listIterator() {
        return delegate.listIterator();
    }

    @NotNull
    @Override
    public ListIterator<T> listIterator(int i) {
        return delegate.listIterator(i);
    }

    @NotNull
    @Override
    public List<T> subList(int i, int i1) {
        return delegate.subList(i, i1);
    }

    @Override
    public Spliterator<T> spliterator() {
        return delegate.spliterator();
    }

    @Override
    public Stream<T> stream() {
        return delegate.stream();
    }

    @Override
    public Stream<T> parallelStream() {
        return delegate.parallelStream();
    }

    @Override
    public int hashCode() {
        return delegate.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return obj instanceof DelegateList<?> dl ? delegate.equals(dl.delegate) : delegate.equals(obj);
    }

    @Override
    public String toString() {
        return delegate.toString();
    }

    private List<T> unwrap() {
        return delegate instanceof DelegateList<T> dl ? dl.unwrap() : delegate;
    }
}