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Assertions library provides facilities for the unit testing

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///////////////////////////////////////////////////////////////////////////////////////////////////
// Assertions library provides facilities for the unit testing.
// Copyright (C) 2017 Dmitry Shapovalov.
//
// This file is part of assertions library.
//
// Assertions library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Assertions library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see .
///////////////////////////////////////////////////////////////////////////////////////////////////
package ru.d_shap.assertions.asimp.array;

import ru.d_shap.assertions.converter.ConverterArgumentHelper;
import ru.d_shap.assertions.converter.ValueConverterProvider;

/**
 * Value converter from the int array to the char array.
 *
 * @author Dmitry Shapovalov
 */
public final class IntArrayToCharArrayValueConverter implements ValueConverterProvider {

    /**
     * Create new object.
     */
    public IntArrayToCharArrayValueConverter() {
        super();
    }

    @Override
    public Class getValueClass() {
        return int[].class;
    }

    @Override
    public Class getTargetClass() {
        return char[].class;
    }

    @Override
    public Object convert(final Object value, final Object... arguments) {
        int[] castedValue = ConverterArgumentHelper.getValue(value, int[].class);
        ConverterArgumentHelper.checkArgumentsLength(arguments, 0);

        if (canConvertToTargetClass(castedValue)) {
            char[] result = new char[castedValue.length];
            for (int i = 0; i < castedValue.length; i++) {
                int intValue = castedValue[i];
                char charValue = (char) intValue;
                result[i] = charValue;
            }
            return result;
        } else {
            return castedValue;
        }
    }

    private boolean canConvertToTargetClass(final int[] castedValue) {
        for (int intValue : castedValue) {
            char charValue = (char) intValue;
            if (intValue != charValue) {
                return false;
            }
        }
        return true;
    }

}