/*
 * Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.jvnet.tiger_types;

import java.lang.reflect.GenericArrayType;
import java.lang.reflect.Type;

/**
 * Implementation of GenericArrayType interface for core reflection.
 */
final class GenericArrayTypeImpl implements GenericArrayType {
    private Type genericComponentType;

    GenericArrayTypeImpl(Type ct) {
        assert ct!=null;
        genericComponentType = 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;

            Type thatComponentType = that.getGenericComponentType();
            return genericComponentType.equals(thatComponentType);
        } else
            return false;
    }

    @Override
    public int hashCode() {
        return genericComponentType.hashCode();
    }
}