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GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.

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/*
 * 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 RejectIterable is an iterable that filters a source iterable on a negative condition as it iterates.
 */
@Immutable
public class RejectIterable
        extends AbstractLazyIterable
{
    private final Iterable adapted;
    private final Predicate predicate;

    public RejectIterable(Iterable newAdapted, Predicate newPredicate)
    {
        this.adapted = newAdapted;
        this.predicate = Predicates.not(newPredicate);
    }

    public void each(Procedure procedure)
    {
        Iterate.forEach(this.adapted, new IfProcedure(this.predicate, procedure));
    }

    @Override
    public void forEachWithIndex(ObjectIntProcedure objectIntProcedure)
    {
        Iterate.forEach(this.adapted, new IfObjectIntProcedure(this.predicate, objectIntProcedure));
    }

    @Override
    public  void forEachWith(Procedure2 procedure, P parameter)
    {
        Iterate.forEachWith(this.adapted, new IfProcedureWith(this.predicate, procedure), parameter);
    }

    /**
     * We use a SelectIterator, since we have already negated the predicate
     */
    public Iterator iterator()
    {
        return new SelectIterator(this.adapted, this.predicate);
    }

    @Override
    public boolean anySatisfy(Predicate predicate)
    {
        return Iterate.anySatisfy(this.adapted, Predicates.and(this.predicate, predicate));
    }

    @Override
    public 
 boolean anySatisfyWith(Predicate2 predicate, P parameter)
    {
        return this.anySatisfy(Predicates.bind(predicate, parameter));
    }

    @Override
    public boolean allSatisfy(Predicate predicate)
    {
        return Iterate.allSatisfy(this.adapted, new AllSatisfyPredicate(this.predicate, predicate));
    }

    @Override
    public 
 boolean allSatisfyWith(Predicate2 predicate, P parameter)
    {
        return this.allSatisfy(Predicates.bind(predicate, parameter));
    }

    @Override
    public boolean noneSatisfy(Predicate predicate)
    {
        return Iterate.noneSatisfy(this.adapted, new AllSatisfyPredicate(this.predicate, predicate));
    }

    @Override
    public  boolean noneSatisfyWith(Predicate2 predicate, P parameter)
    {
        return this.noneSatisfy(Predicates.bind(predicate, parameter));
    }

    @Override
    public T detect(Predicate predicate)
    {
        return Iterate.detect(this.adapted, Predicates.and(this.predicate, predicate));
    }

    @Override
    public T getFirst()
    {
        return Iterate.detect(this.adapted, this.predicate);
    }
}