com.bmd.android.collection.internal.ElementSparseIterableImpl Maven / Gradle / Ivy

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Easily iterate through Android sparse collections
There is a newer version: 3.0.0
/**
 * 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.bmd.android.collection.internal;

import com.bmd.android.collection.filter.Filter;
import com.bmd.android.collection.filter.FilterBuilder;
import com.bmd.android.collection.iterator.ElementSparseIterable;
import com.bmd.android.collection.translator.Translator;

import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Collection;

/**
 * Abstract implementation of a {@link com.bmd.android.collection.iterator.ElementSparseIterable}.
 * 
 * Created by davide on 3/19/14.
 *
 * @param  The element type.
 */
abstract class ElementSparseIterableImpl extends AbstractSparseIterable
        implements ElementSparseIterable {

    private FilterBuilderImpl, E> mExclusionBuilder;

    private FilterBuilderImpl, E> mInclusionBuilder;

    public ElementSparseIterableImpl() {

    }

    ElementSparseIterableImpl(final ElementSparseIterableImpl other) {

        super(other);
    }

    @Override
    public FilterBuilder, E> but() {

        if (mExclusionBuilder == null) {

            mExclusionBuilder = new FilterBuilderImpl, E>(this, false);
        }

        return mExclusionBuilder;
    }

    @Override
    public ElementSparseIterable but(final Filter filter) {

        super.but(filter);

        return this;
    }

    @Override
    public ElementSparseIterable doWhile(final Condition condition) {

        super.doWhile(condition);

        return this;
    }

    @Override
    public ElementSparseIterable forEach(final Action action) {

        super.forEach(action);

        return this;
    }

    @Override
    public FilterBuilder, E> only() {

        if (mInclusionBuilder == null) {

            mInclusionBuilder = new FilterBuilderImpl, E>(this, true);
        }

        return mInclusionBuilder;
    }

    @Override
    public ElementSparseIterable only(final Filter filter) {

        super.only(filter);

        return this;
    }

    @Override
    public ElementSparseIterable remove() {

        super.remove();

        return this;
    }

    @Override
    public ElementSparseIterable retain() {

        super.retain();

        return this;
    }

    @Override
    public ElementSparseIterable reverse() {

        super.reverse();

        return this;
    }

    @Override
    public ElementSparseIterable fill(final Collection collection) {

        for (final E element : this) {

            collection.add(element);
        }

        return this;
    }

    @Override
    public  ElementSparseIterable fill(final T[] array) {

        return fill(array, 0);
    }

    @Override
    public  ElementSparseIterable fill(final T[] array, final int offset) {

        int i = 0;

        for (final E element : this) {

            //noinspection unchecked
            array[i++] = (T) element;
        }

        return this;
    }

    @Override
    public  T[] toArray(final Class type) {

        final ArrayList list = toList();

        //noinspection unchecked,SuspiciousToArrayCall
        return list.toArray((T[]) Array.newInstance(type, list.size()));
    }

    @Override
    public ArrayList toList() {

        final ArrayList list = new ArrayList();

        fill(list);

        return list;
    }

    @Override
    public  ElementSparseIterable translate(final Translator translator) {

        return toElements(translator);
    }
}