/*
* Copyright 2014 Goldman Sachs.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gs.collections.impl.lazy.primitive;
import java.io.IOException;
import java.util.Arrays;
import java.util.NoSuchElementException;
import com.gs.collections.api.IntIterable;
import com.gs.collections.api.LazyIntIterable;
import com.gs.collections.api.LazyIterable;
import com.gs.collections.api.block.function.primitive.IntToObjectFunction;
import com.gs.collections.api.block.function.primitive.ObjectIntToObjectFunction;
import com.gs.collections.api.block.predicate.primitive.IntPredicate;
import com.gs.collections.api.block.procedure.primitive.IntProcedure;
import com.gs.collections.api.iterator.IntIterator;
import com.gs.collections.api.bag.primitive.MutableIntBag;
import com.gs.collections.api.list.primitive.MutableIntList;
import com.gs.collections.api.set.primitive.MutableIntSet;
import com.gs.collections.impl.bag.mutable.primitive.IntHashBag;
import com.gs.collections.impl.set.mutable.primitive.IntHashSet;
import com.gs.collections.impl.list.mutable.primitive.IntArrayList;
import com.gs.collections.impl.block.factory.primitive.IntPredicates;
/**
* This file was automatically generated from template file selectPrimitiveIterable.stg.
*/
public class SelectIntIterable
extends AbstractLazyIntIterable
{
private final IntIterable delegate;
private final IntPredicate predicate;
public SelectIntIterable(IntIterable delegate, IntPredicate predicate)
{
this.delegate = delegate;
this.predicate = predicate;
}
public IntIterator intIterator()
{
return new SelectIntIterator(this.delegate, this.predicate);
}
public void forEach(IntProcedure procedure)
{
this.delegate.forEach(new IfIntProcedure(procedure));
}
@Override
public int size()
{
return this.delegate.count(this.predicate);
}
@Override
public boolean isEmpty()
{
return !this.intIterator().hasNext();
}
@Override
public boolean notEmpty()
{
return this.intIterator().hasNext();
}
@Override
public int count(IntPredicate predicate)
{
CountIntProcedure countIntProcedure = new CountIntProcedure(predicate);
this.forEach(countIntProcedure);
return countIntProcedure.getCount();
}
@Override
public boolean anySatisfy(IntPredicate predicate)
{
return this.delegate.anySatisfy(IntPredicates.and(this.predicate, predicate));
}
@Override
public boolean allSatisfy(IntPredicate predicate)
{
return this.noneSatisfy(IntPredicates.not(predicate));
}
@Override
public boolean noneSatisfy(IntPredicate predicate)
{
return !this.anySatisfy(predicate);
}
public long sum()
{
long sum = 0L;
for (IntIterator intIterator = this.intIterator(); intIterator.hasNext() ;)
{
sum += intIterator.next();
}
return sum;
}
public int max()
{
IntIterator intIterator = this.intIterator();
int max = intIterator.next();
while (intIterator.hasNext())
{
max = (int) Math.max(max, intIterator.next());
}
return max;
}
public int min()
{
IntIterator intIterator = this.intIterator();
int min = intIterator.next();
while (intIterator.hasNext())
{
min = (int) Math.min(min, intIterator.next());
}
return min;
}
public int minIfEmpty(int defaultValue)
{
try
{
return this.min();
}
catch (NoSuchElementException ex)
{
}
return defaultValue;
}
public int maxIfEmpty(int defaultValue)
{
try
{
return this.max();
}
catch (NoSuchElementException ex)
{
}
return defaultValue;
}
public double average()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
return (double) this.sum() / (double) this.size();
}
public double median()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
int[] sortedArray = this.toSortedArray();
int middleIndex = sortedArray.length >> 1;
if (sortedArray.length > 1 && (sortedArray.length & 1) == 0)
{
int first = sortedArray[middleIndex];
int second = sortedArray[middleIndex - 1];
return ((double) first + (double) second) / 2.0;
}
return (double) sortedArray[middleIndex];
}
public int[] toSortedArray()
{
int[] array = this.toArray();
Arrays.sort(array);
return array;
}
public MutableIntList toSortedList()
{
return IntArrayList.newList(this).sortThis();
}
@Override
public int[] toArray()
{
final int[] array = new int[this.size()];
this.forEach(new IntProcedure()
{
@SuppressWarnings("FieldMayBeFinal")
private int index = 0;
public void value(int each)
{
array[this.index++] = each;
}
});
return array;
}
@Override
public boolean containsAll(int... source)
{
for (int value : source)
{
if (!this.contains(value))
{
return false;
}
}
return true;
}
@Override
public boolean containsAll(IntIterable source)
{
for (IntIterator iterator = source.intIterator(); iterator.hasNext(); )
{
if (!this.contains(iterator.next()))
{
return false;
}
}
return true;
}
@Override
public MutableIntList toList()
{
return IntArrayList.newList(this);
}
@Override
public MutableIntSet toSet()
{
return IntHashSet.newSet(this);
}
@Override
public MutableIntBag toBag()
{
return IntHashBag.newBag(this);
}
private static final class CountIntProcedure implements IntProcedure
{
private static final long serialVersionUID = 1L;
private final IntPredicate predicate;
private int counter = 0;
private CountIntProcedure(IntPredicate predicate)
{
this.predicate = predicate;
}
public void value(int each)
{
if (this.predicate.accept(each))
{
this.counter++;
}
}
public int getCount()
{
return this.counter;
}
}
private final class IfIntProcedure implements IntProcedure
{
private static final long serialVersionUID = 1L;
private final IntProcedure procedure;
private IfIntProcedure(IntProcedure procedure)
{
this.procedure = procedure;
}
public void value(int each)
{
if (SelectIntIterable.this.predicate.accept(each))
{
this.procedure.value(each);
}
}
}
private static final class SelectIntIterator
implements IntIterator
{
private final IntIterator iterator;
private final IntPredicate predicate;
private int next;
private boolean verifiedHasNext = false;
private SelectIntIterator(IntIterable iterable, IntPredicate predicate)
{
this(iterable.intIterator(), predicate);
}
private SelectIntIterator(IntIterator iterator, IntPredicate predicate)
{
this.iterator = iterator;
this.predicate = predicate;
}
public boolean hasNext()
{
if (this.verifiedHasNext)
{
return true;
}
while (this.iterator.hasNext())
{
int temp = this.iterator.next();
if (this.predicate.accept(temp))
{
this.next = temp;
this.verifiedHasNext = true;
return true;
}
}
return false;
}
public int next()
{
if (this.verifiedHasNext || this.hasNext())
{
this.verifiedHasNext = false;
return this.next;
}
throw new NoSuchElementException();
}
}
}