package net.minecraft.util;
public class LongHashMap
{
/** the array of all elements in the hash */
private transient LongHashMap.Entry[] hashArray = new LongHashMap.Entry[16];
/** the number of elements in the hash array */
private transient int numHashElements;
/** the maximum amount of elements in the hash (probably 3/4 the size due to meh hashing function) */
private int capacity = 12;
/** percent of the hasharray that can be used without hash colliding probably */
private final float percentUseable = 0.75F;
/** count of times elements have been added/removed */
private transient volatile int modCount;
private static final String __OBFID = "CL_00001492";
/**
* returns the hashed key given the original key
*/
private static int getHashedKey(long p_76155_0_)
{
/**
* the hash function
*/
return hash((int)(p_76155_0_ ^ p_76155_0_ >>> 32));
}
/**
* the hash function
*/
private static int hash(int p_76157_0_)
{
p_76157_0_ ^= p_76157_0_ >>> 20 ^ p_76157_0_ >>> 12;
return p_76157_0_ ^ p_76157_0_ >>> 7 ^ p_76157_0_ >>> 4;
}
/**
* gets the index in the hash given the array length and the hashed key
*/
private static int getHashIndex(int p_76158_0_, int p_76158_1_)
{
return p_76158_0_ & p_76158_1_ - 1;
}
public int getNumHashElements()
{
return this.numHashElements;
}
/**
* get the value from the map given the key
*/
public Object getValueByKey(long p_76164_1_)
{
int j = getHashedKey(p_76164_1_);
for (LongHashMap.Entry entry = this.hashArray[getHashIndex(j, this.hashArray.length)]; entry != null; entry = entry.nextEntry)
{
if (entry.key == p_76164_1_)
{
return entry.value;
}
}
return null;
}
public boolean containsItem(long p_76161_1_)
{
return this.getEntry(p_76161_1_) != null;
}
final LongHashMap.Entry getEntry(long p_76160_1_)
{
int j = getHashedKey(p_76160_1_);
for (LongHashMap.Entry entry = this.hashArray[getHashIndex(j, this.hashArray.length)]; entry != null; entry = entry.nextEntry)
{
if (entry.key == p_76160_1_)
{
return entry;
}
}
return null;
}
/**
* Add a key-value pair.
*/
public void add(long p_76163_1_, Object p_76163_3_)
{
int j = getHashedKey(p_76163_1_);
int k = getHashIndex(j, this.hashArray.length);
for (LongHashMap.Entry entry = this.hashArray[k]; entry != null; entry = entry.nextEntry)
{
if (entry.key == p_76163_1_)
{
entry.value = p_76163_3_;
return;
}
}
++this.modCount;
this.createKey(j, p_76163_1_, p_76163_3_, k);
}
/**
* resizes the table
*/
private void resizeTable(int p_76153_1_)
{
LongHashMap.Entry[] aentry = this.hashArray;
int j = aentry.length;
if (j == 1073741824)
{
this.capacity = Integer.MAX_VALUE;
}
else
{
LongHashMap.Entry[] aentry1 = new LongHashMap.Entry[p_76153_1_];
this.copyHashTableTo(aentry1);
this.hashArray = aentry1;
this.capacity = (int)((float)p_76153_1_ * this.percentUseable);
}
}
/**
* copies the hash table to the specified array
*/
private void copyHashTableTo(LongHashMap.Entry[] p_76154_1_)
{
LongHashMap.Entry[] aentry = this.hashArray;
int i = p_76154_1_.length;
for (int j = 0; j < aentry.length; ++j)
{
LongHashMap.Entry entry = aentry[j];
if (entry != null)
{
aentry[j] = null;
LongHashMap.Entry entry1;
do
{
entry1 = entry.nextEntry;
int k = getHashIndex(entry.hash, i);
entry.nextEntry = p_76154_1_[k];
p_76154_1_[k] = entry;
entry = entry1;
}
while (entry1 != null);
}
}
}
/**
* calls the removeKey method and returns removed object
*/
public Object remove(long p_76159_1_)
{
LongHashMap.Entry entry = this.removeKey(p_76159_1_);
return entry == null ? null : entry.value;
}
/**
* removes the key from the hash linked list
*/
final LongHashMap.Entry removeKey(long p_76152_1_)
{
int j = getHashedKey(p_76152_1_);
int k = getHashIndex(j, this.hashArray.length);
LongHashMap.Entry entry = this.hashArray[k];
LongHashMap.Entry entry1;
LongHashMap.Entry entry2;
for (entry1 = entry; entry1 != null; entry1 = entry2)
{
entry2 = entry1.nextEntry;
if (entry1.key == p_76152_1_)
{
++this.modCount;
--this.numHashElements;
if (entry == entry1)
{
this.hashArray[k] = entry2;
}
else
{
entry.nextEntry = entry2;
}
return entry1;
}
entry = entry1;
}
return entry1;
}
/**
* creates the key in the hash table
*/
private void createKey(int p_76156_1_, long p_76156_2_, Object p_76156_4_, int p_76156_5_)
{
LongHashMap.Entry entry = this.hashArray[p_76156_5_];
this.hashArray[p_76156_5_] = new LongHashMap.Entry(p_76156_1_, p_76156_2_, p_76156_4_, entry);
if (this.numHashElements++ >= this.capacity)
{
this.resizeTable(2 * this.hashArray.length);
}
}
static class Entry
{
/** the key as a long (for playerInstances it is the x in the most significant 32 bits and then y) */
final long key;
/** the value held by the hash at the specified key */
Object value;
/** the next hashentry in the table */
LongHashMap.Entry nextEntry;
final int hash;
private static final String __OBFID = "CL_00001493";
Entry(int p_i1553_1_, long p_i1553_2_, Object p_i1553_4_, LongHashMap.Entry p_i1553_5_)
{
this.value = p_i1553_4_;
this.nextEntry = p_i1553_5_;
this.key = p_i1553_2_;
this.hash = p_i1553_1_;
}
public final long getKey()
{
return this.key;
}
public final Object getValue()
{
return this.value;
}
public final boolean equals(Object p_equals_1_)
{
if (!(p_equals_1_ instanceof LongHashMap.Entry))
{
return false;
}
else
{
LongHashMap.Entry entry = (LongHashMap.Entry)p_equals_1_;
Long olong = Long.valueOf(this.getKey());
Long olong1 = Long.valueOf(entry.getKey());
if (olong == olong1 || olong != null && olong.equals(olong1))
{
Object object1 = this.getValue();
Object object2 = entry.getValue();
if (object1 == object2 || object1 != null && object1.equals(object2))
{
return true;
}
}
return false;
}
}
public final int hashCode()
{
return LongHashMap.getHashedKey(this.key);
}
public final String toString()
{
return this.getKey() + "=" + this.getValue();
}
}
}