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using System.Linq;
using Mammoth.Couscous.java.util;
using Mammoth.Couscous.java.lang;
using Mammoth.Couscous.java.util.function;
using Mammoth.Couscous;
using System.Collections.Generic;
namespace Mammoth.Couscous.org.zwobble.mammoth.@internal.util
{
internal static class Maps
{
internal static Map<K, V> map<K, V>() {
return ToJava.DictionaryToMap(new System.Collections.Generic.Dictionary<K, V>());
}
internal static Map<K, V> map<K, V>(K key1, V value1) {
return ToJava.DictionaryToMap(new System.Collections.Generic.Dictionary<K, V> {
{key1, value1}
});
}
internal static Map<K, V> map<K, V>(K key1, V value1, K key2, V value2) {
return ToJava.DictionaryToMap(new System.Collections.Generic.Dictionary<K, V> {
{key1, value1},
{key2, value2}
});
}
internal static Map<K, V> map<K, V>(K key1, V value1, K key2, V value2, K key3, V value3) {
return ToJava.DictionaryToMap(new System.Collections.Generic.Dictionary<K, V> {
{key1, value1},
{key2, value2},
{key3, value3}
});
}
internal static Map<K, V> toMap<T, K, V>(Iterable<T> iterable, Function<T, Map__Entry<K, V>> function) {
var dictionary = FromJava.IterableToEnumerable(iterable)
.Select(function.apply)
.ToDictionary(entry => entry.getKey(), entry => entry.getValue());
return ToJava.DictionaryToMap(dictionary);
}
/// <summary>
/// Convert an iterable to map using the given mapping function. If the
/// mapping function generates entries with the same key, only the first
/// entry will be used, and subsequent entries will be ignored.
/// </summary>
internal static Map<K, V> toMapPreferFirst<T, K, V>(Iterable<T> iterable, Function<T, Map__Entry<K, V>> function) {
var dictionary = new Dictionary<K, V>();
foreach (var element in FromJava.IterableToEnumerable(iterable)) {
var entry = function.apply(element);
if (!dictionary.ContainsKey(entry.getKey())) {
dictionary[entry.getKey()] = entry.getValue();
}
}
return ToJava.DictionaryToMap(dictionary);
}
internal static Map<K, T> toMapWithKey<T, K>(Iterable<T> iterable, Function<T, K> function) {
var dictionary = FromJava.IterableToEnumerable(iterable)
.ToDictionary(function.apply);
return ToJava.DictionaryToMap(dictionary);
}
internal static Map<K, java.util.List<T>> toMultiMapWithKey<T, K>(Iterable<T> iterable, Function<T, K> function) {
var dictionary = FromJava.IterableToEnumerable(iterable)
.GroupBy(value => function.apply(value))
.ToDictionary(
grouping => grouping.Key,
grouping => ToJava.ListToList(grouping.ToList()));
return ToJava.DictionaryToMap(dictionary);
}
internal static Map<K, java.util.List<V>> toMultiMap<T, K, V>(Iterable<T> iterable, Function<T, Map__Entry<K, V>> function) {
var dictionary = FromJava.IterableToEnumerable(iterable)
.Select(element => function.apply(element))
.GroupBy(entry => entry.getKey())
.ToDictionary(
grouping => grouping.Key,
grouping => ToJava.ListToList(grouping.Select(entry => entry.getValue()).ToList()));
return ToJava.DictionaryToMap(dictionary);
}
internal static Optional<V> lookup<K, V>(Map<K, V> map, K key) {
return map._lookup(key);
}
internal static Map<K2, V> eagerMapKeys<K1, K2, V>(Map<K1, V> map, Function<K1, K2> function) {
var dictionary = FromJava.MapToDictionary(map)
.ToDictionary(
entry => function.apply(entry.Key),
entry => entry.Value);
return ToJava.DictionaryToMap(dictionary);
}
internal static Map<K, V2> eagerMapValues<K, V1, V2>(Map<K, V1> map, Function<V1, V2> function) {
var dictionary = FromJava.MapToDictionary(map)
.ToDictionary(
entry => entry.Key,
entry => function.apply(entry.Value));
return ToJava.DictionaryToMap(dictionary);
}
internal static Map__Entry<K, V> entry<K, V>(K key, V value) {
return new Entry<K, V>(key, value);
}
private class Entry<K, V> : Map__Entry<K, V> {
private readonly K _key;
private readonly V _value;
internal Entry(K key, V value) {
this._key = key;
this._value = value;
}
public K getKey() {
return _key;
}
public V getValue() {
return _value;
}
public override bool Equals(object otherObj) {
var other = otherObj as Entry<K, V>;
if (other == null) {
return false;
} else if (object.ReferenceEquals(this, other)) {
return true;
} else {
return _key.Equals(other._key) && _value.Equals(other._value);
}
}
public override int GetHashCode() {
return _key.GetHashCode() * 17 + _value.GetHashCode();
}
}
internal static Builder<K, V> builder<K, V>() {
return new Builder<K, V>();
}
internal class Builder<K, V> {
private readonly System.Collections.Generic.Dictionary<K, V> _values = new System.Collections.Generic.Dictionary<K, V>();
internal Builder<K, V> put(K key, V value) {
_values[key] = value;
return this;
}
internal Map<K, V> build() {
return ToJava.DictionaryToMap(_values);
}
}
internal static Map<K, V> mutableMap<K, V>(K key1, V value1) {
var map = new HashMap<K, V>();
map.put(key1, value1);
return map;
}
}
}
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