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package com.artclod.common.collect;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Comparator;
import java.util.Iterator;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.UnaryOperator;

import com.artclod.common.collect.base.BaseFList;
import com.artclod.common.collect.base.ImFListMixin;
import com.artclod.common.collect.builder.CollectionBuilder;
import com.artclod.common.collect.builder.GuavaImFListBuilder;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableList.Builder;
import com.google.common.collect.Lists;

public class GuavaImFList extends BaseFList> implements ImFList, ImFListMixin {
	private static final long serialVersionUID = 1L;

	public static  GuavaImFList wrap(ImmutableList inner) {
		return new GuavaImFList(inner);
	}

	public static  GuavaImFList create() {
		return new GuavaImFList(ImmutableList.of());
	}

	public static  GuavaImFList create(Iterable elements) {
		return new GuavaImFList(ImmutableList.copyOf(elements));
	}

	public static  GuavaImFList create(Collection elements) {
		return new GuavaImFList(ImmutableList.copyOf(elements));
	}

	public static  GuavaImFList create(Iterator elements) {
		return new GuavaImFList(ImmutableList.copyOf(elements));
	}

	@SafeVarargs
	public static  GuavaImFList create(E... elements) {
		return new GuavaImFList(ImmutableList.copyOf(elements));
	}
	
	protected final ImmutableList inner;

	public GuavaImFList(ImmutableList inner) {
		super(inner);
		this.inner = inner;
	}

	@Override
	protected CollectionBuilder> builder() {
		return new GuavaImFListBuilder(ImmutableList.builder());
	}

	public ImmutableList toGuava() {
		return inner;
	}

	public Builder toBuilder() {
		return ImmutableList. builder().addAll(inner);
	}

	public ArrayList toArrayList() {
		return Lists.newArrayList(this);
	}

	// ==== ImFList methods ====
	public ArrayFList toMu() {
		return ArrayFList.create(this);
	}

	public GuavaImFList toIm() {
		return this;
	}

	@Override
	public  GuavaImFList map(Function f) {
		Builder builder = ImmutableList. builder();
		for (E e : this) {
			builder.add(f.apply(e));
		}
		return new GuavaImFList(builder.build());
	}

	@Override
	public  GuavaImFList flatMap(Function> mapper) {
		Builder builder = ImmutableList. builder();
		for (E e : this) {
			builder.addAll(mapper.apply(e));
		}
		return new GuavaImFList(builder.build());
	}

	// ==== Copy modifiers ====

	@Override
	public GuavaImFList addCp(E e) {
		ArrayList list = toArrayList();
		list.add(e);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList removeCp(Object o) {
		ArrayList list = toArrayList();
		list.remove(o);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList addAllCp(Collection c) {
		ArrayList list = toArrayList();
		list.addAll(c);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList addAllCp(int index, Collection c) {
		ArrayList list = toArrayList();
		list.addAll(index, c);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList removeAllCp(Collection c) {
		ArrayList list = toArrayList();
		list.removeAll(c);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList retainAllCp(Collection c) {
		ArrayList list = toArrayList();
		list.retainAll(c);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList replaceAllCp(UnaryOperator operator) {
		ArrayList list = toArrayList();
		list.replaceAll(operator);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList sortCp(Comparator c) {
		ArrayList list = toArrayList();
		list.sort(c);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList setCp(int index, E element) {
		ArrayList list = toArrayList();
		list.set(index, element);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList addCp(int index, E element) {
		ArrayList list = toArrayList();
		list.add(index, element);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList removeCp(int index) {
		ArrayList list = toArrayList();
		list.remove(index);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

	@Override
	public GuavaImFList removeIfCp(Predicate filter) {
		ArrayList list = toArrayList();
		list.removeIf(filter);
		return new GuavaImFList(ImmutableList.copyOf(list));
	}

}