/*

 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package sun.reflect.generics.reflectiveObjects;

import java.lang.reflect.GenericArrayType;

import java.lang.reflect.Type;

import java.util.Objects;

/**

 * Implementation of GenericArrayType interface for core reflection.

 */

public class GenericArrayTypeImpl

    implements GenericArrayType {

    private final Type genericComponentType;

    // private constructor enforces use of static factory

    private GenericArrayTypeImpl(Type ct) {

        genericComponentType = ct;

    }

    /**

     * Factory method.

     * @param ct - the desired component type of the generic array type

     * being created

     * @return a generic array type with the desired component type

     */

    public static GenericArrayTypeImpl make(Type ct) {

        return new GenericArrayTypeImpl(ct);

    }

    /**

     * Returns  a <tt>Type</tt> object representing the component type

     * of this array.

     *

     * @return  a <tt>Type</tt> object representing the component type

     *     of this array

     * @since 1.5

     */

    public Type getGenericComponentType() {

        return genericComponentType; // return cached component type

    }

    public String toString() {

        Type componentType = getGenericComponentType();

        StringBuilder sb = new StringBuilder();

        if (componentType instanceof Class)

            sb.append(((Class)componentType).getName() );

        else

            sb.append(componentType.toString());

        sb.append("[]");

        return sb.toString();

    }

    @Override

    public boolean equals(Object o) {

        if (o instanceof GenericArrayType) {

            GenericArrayType that = (GenericArrayType) o;

            return Objects.equals(genericComponentType, that.getGenericComponentType());

        } else

            return false;

    }

    @Override

    public int hashCode() {

        return Objects.hashCode(genericComponentType);

    }

}