/*
* Copyright 2015 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;
import java.util.Iterator;
import com.gs.collections.api.block.predicate.Predicate;
import com.gs.collections.api.block.predicate.Predicate2;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.block.procedure.Procedure2;
import com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure;
import com.gs.collections.impl.block.factory.Predicates;
import com.gs.collections.impl.block.procedure.IfObjectIntProcedure;
import com.gs.collections.impl.block.procedure.IfProcedure;
import com.gs.collections.impl.block.procedure.IfProcedureWith;
import com.gs.collections.impl.lazy.iterator.SelectIterator;
import com.gs.collections.impl.utility.Iterate;
import net.jcip.annotations.Immutable;
/**
* A SelectIterable is an iterable that filters a source iterable on a condition as it iterates.
*/
@Immutable
public class SelectIterable<T>
extends AbstractLazyIterable<T>
{
private final Iterable<T> adapted;
private final Predicate<? super T> predicate;
public SelectIterable(Iterable<T> newAdapted, Predicate<? super T> newPredicate)
{
this.adapted = newAdapted;
this.predicate = newPredicate;
}
public void each(Procedure<? super T> procedure)
{
Iterate.forEach(this.adapted, new IfProcedure<T>(this.predicate, procedure));
}
@Override
public void forEachWithIndex(ObjectIntProcedure<? super T> objectIntProcedure)
{
Iterate.forEach(this.adapted, new IfObjectIntProcedure<T>(this.predicate, objectIntProcedure));
}
@Override
public <P> void forEachWith(Procedure2<? super T, ? super P> procedure, P parameter)
{
Iterate.forEachWith(this.adapted, new IfProcedureWith<T, P>(this.predicate, procedure), parameter);
}
public Iterator<T> iterator()
{
return new SelectIterator<T>(this.adapted.iterator(), this.predicate);
}
@Override
public boolean anySatisfy(Predicate<? super T> predicate)
{
return Iterate.anySatisfy(this.adapted, Predicates.and(this.predicate, predicate));
}
@Override
public <P> boolean anySatisfyWith(Predicate2<? super T, ? super P> predicate, P parameter)
{
return this.anySatisfy(Predicates.bind(predicate, parameter));
}
@Override
public boolean allSatisfy(Predicate<? super T> predicate)
{
return Iterate.allSatisfy(this.adapted, new AllSatisfyPredicate<T>(this.predicate, predicate));
}
@Override
public <P> boolean allSatisfyWith(Predicate2<? super T, ? super P> predicate, P parameter)
{
return this.allSatisfy(Predicates.bind(predicate, parameter));
}
@Override
public boolean noneSatisfy(Predicate<? super T> predicate)
{
return Iterate.noneSatisfy(this.adapted, new AllSatisfyPredicate<T>(this.predicate, predicate));
}
@Override
public <P> boolean noneSatisfyWith(Predicate2<? super T, ? super P> predicate, P parameter)
{
return this.noneSatisfy(Predicates.bind(predicate, parameter));
}
@Override
public T detect(Predicate<? super T> predicate)
{
return Iterate.detect(this.adapted, Predicates.and(this.predicate, predicate));
}
@Override
public T getFirst()
{
return Iterate.detect(this.adapted, this.predicate);
}
}