/*
 * Copyright (c) 2023-2024 nosqlbench
 *
 * 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 io.nosqlbench.virtdata.lib.vectors.primitive;

import io.nosqlbench.virtdata.api.annotations.Categories;
import io.nosqlbench.virtdata.api.annotations.Category;
import io.nosqlbench.virtdata.api.annotations.ThreadSafeMapper;

import java.util.function.Function;

/**
 * Suffix the incoming array with an empty float[] so that it is sized up to at least the given size. If it is already
 * at least that size, pass it through as-is.
 */
@ThreadSafeMapper
@Categories({Category.experimental, Category.vectors})
public class FloatVectorPadRight implements Function<float[], float[]> {

    private final int size;

    public FloatVectorPadRight(int size) {
        this.size = size;
    }

    @Override
    public float[] apply(float[] floats) {
        if (floats.length>=size) {
            return floats;
        }

        float[] newary = new float[size];
        System.arraycopy(floats, 0, newary, 0, floats.length);
        return newary;
    }
}
