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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 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.util.Iterator;

import com.gs.collections.api.BooleanIterable;
import com.gs.collections.api.block.function.primitive.BooleanToObjectFunction;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.block.procedure.Procedure2;
import com.gs.collections.api.block.procedure.primitive.BooleanProcedure;
import com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure;
import com.gs.collections.api.iterator.BooleanIterator;
import com.gs.collections.impl.lazy.AbstractLazyIterable;

public class CollectBooleanToObjectIterable extends AbstractLazyIterable
{
    private final BooleanIterable iterable;
    private final BooleanToObjectFunction function;

    public CollectBooleanToObjectIterable(BooleanIterable iterable, BooleanToObjectFunction function)
    {
        this.iterable = iterable;
        this.function = function;
    }

    public void forEach(final Procedure procedure)
    {
        this.iterable.forEach(new BooleanProcedure()
        {
            public void value(boolean each)
            {
                procedure.value(CollectBooleanToObjectIterable.this.function.valueOf(each));
            }
        });
    }

    public void forEachWithIndex(final ObjectIntProcedure objectIntProcedure)
    {
        this.iterable.forEach(new BooleanProcedure()
        {
            private int index;

            public void value(boolean each)
            {
                objectIntProcedure.value(CollectBooleanToObjectIterable.this.function.valueOf(each), this.index++);
            }
        });
    }

    public  void forEachWith(final Procedure2 procedure, final P parameter)
    {
        this.iterable.forEach(new BooleanProcedure()
        {
            public void value(boolean each)
            {
                procedure.value(CollectBooleanToObjectIterable.this.function.valueOf(each), parameter);
            }
        });
    }

    public Iterator iterator()
    {
        return new Iterator()
        {
            private final BooleanIterator iterator = CollectBooleanToObjectIterable.this.iterable.booleanIterator();

            public boolean hasNext()
            {
                return this.iterator.hasNext();
            }

            public V next()
            {
                return CollectBooleanToObjectIterable.this.function.valueOf(this.iterator.next());
            }

            public void remove()
            {
                throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName());
            }
        };
    }

    @Override
    public int size()
    {
        return this.iterable.size();
    }

    @Override
    public boolean isEmpty()
    {
        return this.iterable.isEmpty();
    }

    @Override
    public boolean notEmpty()
    {
        return this.iterable.notEmpty();
    }
}