/*

 * Copyright (C) 2007-2010 Júlio Vilmar Gesser.

 * Copyright (C) 2011, 2013-2021 The JavaParser Team.

 *

 * This file is part of JavaParser.

 *

 * JavaParser can be used either under the terms of

 * a) 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.

 * b) the terms of the Apache License

 *

 * You should have received a copy of both licenses in LICENCE.LGPL and

 * LICENCE.APACHE. Please refer to those files for details.

 *

 * JavaParser 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.

 */

package com.github.javaparser.utils;

import java.util.HashMap;

import java.util.Map;

public class ClassUtils {

    /**

     * Maps primitive {@code Class}es to their corresponding wrapper {@code Class}.

     */

    private static final Map<Class<?>, Class<?>> primitiveWrapperMap = new HashMap<>();

    static {

        primitiveWrapperMap.put(Boolean.TYPE, Boolean.class);

        primitiveWrapperMap.put(Byte.TYPE, Byte.class);

        primitiveWrapperMap.put(Character.TYPE, Character.class);

        primitiveWrapperMap.put(Short.TYPE, Short.class);

        primitiveWrapperMap.put(Integer.TYPE, Integer.class);

        primitiveWrapperMap.put(Long.TYPE, Long.class);

        primitiveWrapperMap.put(Double.TYPE, Double.class);

        primitiveWrapperMap.put(Float.TYPE, Float.class);

        primitiveWrapperMap.put(Void.TYPE, Void.TYPE);

    }

    /**

     * Maps wrapper {@code Class}es to their corresponding primitive types.

     */

    private static final Map<Class<?>, Class<?>> wrapperPrimitiveMap = new HashMap<>();

    static {

        for (final Class<?> primitiveClass : primitiveWrapperMap.keySet()) {

            final Class<?> wrapperClass = primitiveWrapperMap.get(primitiveClass);

            if (!primitiveClass.equals(wrapperClass)) {

                wrapperPrimitiveMap.put(wrapperClass, primitiveClass);

            }

        }

    }

    /**

     * Returns whether the given {@code type} is a primitive or primitive wrapper ({@link Boolean}, {@link Byte},

     * {@link Character},

     * {@link Short}, {@link Integer}, {@link Long}, {@link Double}, {@link Float}).

     *

     * @param type The class to query or null.

     * @return true if the given {@code type} is a primitive or primitive wrapper ({@link Boolean}, {@link Byte}, {@link

     * Character}, {@link Short}, {@link Integer}, {@link Long}, {@link Double}, {@link Float}).

     */

    public static boolean isPrimitiveOrWrapper(final Class<?> type) {

        if (type == null) {

            return false;

        }

        return type.isPrimitive() || isPrimitiveWrapper(type);

    }

    /**

     * Returns whether the given {@code type} is a primitive wrapper ({@link Boolean}, {@link Byte}, {@link Character},

     * {@link Short},

     * {@link Integer}, {@link Long}, {@link Double}, {@link Float}).

     *

     * @param type The class to query or null.

     * @return true if the given {@code type} is a primitive wrapper ({@link Boolean}, {@link Byte}, {@link Character},

     * {@link Short}, {@link Integer}, {@link Long}, {@link Double}, {@link Float}).

     * @since 3.1

     */

    public static boolean isPrimitiveWrapper(final Class<?> type) {

        return wrapperPrimitiveMap.containsKey(type);

    }

}