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package com.github.xphsc.collect;


import com.github.xphsc.lang.Validator;

import java.util.*;

/**
 * Created by ${huipei.x} on 2017-5-31.
 */
public class Sets {

    public static  HashSet newHashSet(Collection collection) {
        return new HashSet(collection);
    }
    public static  HashSet newHashSet(boolean isSorted, Collection collection) {
        return (HashSet)(isSorted?new LinkedHashSet():new HashSet(collection));
    }

    @SafeVarargs
    public static  HashSet newHashSet(T... ts) {
        HashSet set = new HashSet(Math.max((int)((float)ts.length / 0.75F) + 1, 16));
        Object[] arr$ = ts;
        int len$ = ts.length;

        for(int i$ = 0; i$ < len$; ++i$) {
            Object t = arr$[i$];
            set.add(t);
        }

        return set;
    }

    @SafeVarargs
    public static  HashSet newHashSet(boolean isSorted, T... ts) {
        int initialCapacity = Math.max((int)((float)ts.length / 0.75F) + 1, 16);
        Object set = isSorted?new LinkedHashSet(initialCapacity):new HashSet(initialCapacity);
        Object[] arr$ = ts;
        int len$ = ts.length;

        for(int i$ = 0; i$ < len$; ++i$) {
            Object t = arr$[i$];
            ((HashSet)set).add(t);
        }

        return (HashSet)set;
    }
    @SafeVarargs
    public static  Set toSet(T... arrays) {
        return (Set)(Validator.isNullOrEmpty(arrays)?Collections.emptySet():new LinkedHashSet(Arrays.asList(arrays)));
    }
    public static  Set emptyIfNull(Set set) {
        return set == null? (Set) Collections.emptySet() :set;
    }
    public static boolean isEqualSet(Collection set1, Collection set2) {
        return set1 == set2?true:(set1 != null && set2 != null && set1.size() == set2.size()?set1.containsAll(set2):false);
    }
}