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/*
 * Copyright 2019 and onwards Makoto Yui
 *
 * 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 matrix4j.vector;

import java.util.Arrays;

import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;

public final class DenseFloatVector extends AbstractVector {

    @Nonnull
    private final float[] values;
    private final int size;

    public DenseFloatVector(@Nonnegative int size) {
        super();
        this.values = new float[size];
        this.size = size;
    }

    public DenseFloatVector(@Nonnull float[] values) {
        super();
        this.values = values;
        this.size = values.length;
    }

    @Override
    public float get(@Nonnegative final int index, final float defaultValue) {
        checkIndex(index);
        if (index >= size) {
            return defaultValue;
        }

        return values[index];
    }

    @Override
    public double get(@Nonnegative final int index, final double defaultValue) {
        checkIndex(index);
        if (index >= size) {
            return defaultValue;
        }

        return values[index];
    }

    @Override
    public void set(@Nonnegative final int index, final float value) {
        checkIndex(index, size);

        values[index] = value;
    }

    @Override
    public void set(@Nonnegative final int index, final double value) {
        checkIndex(index, size);

        values[index] = (float) value;
    }

    @Override
    public void incr(@Nonnegative final int index, final double delta) {
        checkIndex(index, size);

        values[index] += delta;
    }

    @Override
    public void each(@Nonnull final VectorProcedure procedure) {
        for (int i = 0; i < values.length; i++) {
            procedure.apply(i, values[i]);
        }
    }

    @Override
    public int size() {
        return size;
    }

    @Override
    public void clear() {
        Arrays.fill(values, 0.f);
    }

    @Override
    public double[] toArray() {
        throw new UnsupportedOperationException();
    }

}