/*
* 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.DoubleIterable;
import com.gs.collections.api.LazyDoubleIterable;
import com.gs.collections.api.LazyIterable;
import com.gs.collections.api.block.function.primitive.DoubleToObjectFunction;
import com.gs.collections.api.block.function.primitive.ObjectDoubleToObjectFunction;
import com.gs.collections.api.block.predicate.primitive.DoublePredicate;
import com.gs.collections.api.block.procedure.primitive.DoubleProcedure;
import com.gs.collections.api.iterator.DoubleIterator;
import com.gs.collections.api.bag.primitive.MutableDoubleBag;
import com.gs.collections.api.list.primitive.MutableDoubleList;
import com.gs.collections.api.set.primitive.MutableDoubleSet;
import com.gs.collections.impl.bag.mutable.primitive.DoubleHashBag;
import com.gs.collections.impl.set.mutable.primitive.DoubleHashSet;
import com.gs.collections.impl.list.mutable.primitive.DoubleArrayList;
import com.gs.collections.impl.block.factory.primitive.DoublePredicates;
/**
* This file was automatically generated from template file selectPrimitiveIterable.stg.
*/
public class SelectDoubleIterable
extends AbstractLazyDoubleIterable
{
private final DoubleIterable delegate;
private final DoublePredicate predicate;
public SelectDoubleIterable(DoubleIterable delegate, DoublePredicate predicate)
{
this.delegate = delegate;
this.predicate = predicate;
}
public DoubleIterator doubleIterator()
{
return new SelectDoubleIterator(this.delegate, this.predicate);
}
public void forEach(DoubleProcedure procedure)
{
this.delegate.forEach(new IfDoubleProcedure(procedure));
}
@Override
public int size()
{
return this.delegate.count(this.predicate);
}
@Override
public boolean isEmpty()
{
return !this.doubleIterator().hasNext();
}
@Override
public boolean notEmpty()
{
return this.doubleIterator().hasNext();
}
@Override
public int count(DoublePredicate predicate)
{
CountDoubleProcedure countDoubleProcedure = new CountDoubleProcedure(predicate);
this.forEach(countDoubleProcedure);
return countDoubleProcedure.getCount();
}
@Override
public boolean anySatisfy(DoublePredicate predicate)
{
return this.delegate.anySatisfy(DoublePredicates.and(this.predicate, predicate));
}
@Override
public boolean allSatisfy(DoublePredicate predicate)
{
return this.noneSatisfy(DoublePredicates.not(predicate));
}
@Override
public boolean noneSatisfy(DoublePredicate predicate)
{
return !this.anySatisfy(predicate);
}
public double sum()
{
double sum = 0.0;
for (DoubleIterator doubleIterator = this.doubleIterator(); doubleIterator.hasNext() ;)
{
sum += doubleIterator.next();
}
return sum;
}
public double max()
{
DoubleIterator doubleIterator = this.doubleIterator();
double max = doubleIterator.next();
while (doubleIterator.hasNext())
{
max = (double) Math.max(max, doubleIterator.next());
}
return max;
}
public double min()
{
DoubleIterator doubleIterator = this.doubleIterator();
double min = doubleIterator.next();
while (doubleIterator.hasNext())
{
min = (double) Math.min(min, doubleIterator.next());
}
return min;
}
public double minIfEmpty(double defaultValue)
{
try
{
return this.min();
}
catch (NoSuchElementException ex)
{
}
return defaultValue;
}
public double maxIfEmpty(double defaultValue)
{
try
{
return this.max();
}
catch (NoSuchElementException ex)
{
}
return defaultValue;
}
public double average()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
return this.sum() / (double) this.size();
}
public double median()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
double[] sortedArray = this.toSortedArray();
int middleIndex = sortedArray.length >> 1;
if (sortedArray.length > 1 && (sortedArray.length & 1) == 0)
{
double first = sortedArray[middleIndex];
double second = sortedArray[middleIndex - 1];
return (first + second) / 2.0;
}
return sortedArray[middleIndex];
}
public double[] toSortedArray()
{
double[] array = this.toArray();
Arrays.sort(array);
return array;
}
public MutableDoubleList toSortedList()
{
return DoubleArrayList.newList(this).sortThis();
}
@Override
public double[] toArray()
{
final double[] array = new double[this.size()];
this.forEach(new DoubleProcedure()
{
@SuppressWarnings("FieldMayBeFinal")
private int index = 0;
public void value(double each)
{
array[this.index++] = each;
}
});
return array;
}
@Override
public boolean containsAll(double... source)
{
for (double value : source)
{
if (!this.contains(value))
{
return false;
}
}
return true;
}
@Override
public boolean containsAll(DoubleIterable source)
{
for (DoubleIterator iterator = source.doubleIterator(); iterator.hasNext(); )
{
if (!this.contains(iterator.next()))
{
return false;
}
}
return true;
}
@Override
public MutableDoubleList toList()
{
return DoubleArrayList.newList(this);
}
@Override
public MutableDoubleSet toSet()
{
return DoubleHashSet.newSet(this);
}
@Override
public MutableDoubleBag toBag()
{
return DoubleHashBag.newBag(this);
}
private static final class CountDoubleProcedure implements DoubleProcedure
{
private static final long serialVersionUID = 1L;
private final DoublePredicate predicate;
private int counter = 0;
private CountDoubleProcedure(DoublePredicate predicate)
{
this.predicate = predicate;
}
public void value(double each)
{
if (this.predicate.accept(each))
{
this.counter++;
}
}
public int getCount()
{
return this.counter;
}
}
private final class IfDoubleProcedure implements DoubleProcedure
{
private static final long serialVersionUID = 1L;
private final DoubleProcedure procedure;
private IfDoubleProcedure(DoubleProcedure procedure)
{
this.procedure = procedure;
}
public void value(double each)
{
if (SelectDoubleIterable.this.predicate.accept(each))
{
this.procedure.value(each);
}
}
}
private static final class SelectDoubleIterator
implements DoubleIterator
{
private final DoubleIterator iterator;
private final DoublePredicate predicate;
private double next;
private boolean verifiedHasNext = false;
private SelectDoubleIterator(DoubleIterable iterable, DoublePredicate predicate)
{
this(iterable.doubleIterator(), predicate);
}
private SelectDoubleIterator(DoubleIterator iterator, DoublePredicate predicate)
{
this.iterator = iterator;
this.predicate = predicate;
}
public boolean hasNext()
{
if (this.verifiedHasNext)
{
return true;
}
while (this.iterator.hasNext())
{
double temp = this.iterator.next();
if (this.predicate.accept(temp))
{
this.next = temp;
this.verifiedHasNext = true;
return true;
}
}
return false;
}
public double next()
{
if (this.verifiedHasNext || this.hasNext())
{
this.verifiedHasNext = false;
return this.next;
}
throw new NoSuchElementException();
}
}
}