/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.tools.javadoc;

import com.sun.javadoc.*;

import com.sun.source.util.TreePath;

import com.sun.tools.javac.code.Kinds;

import com.sun.tools.javac.code.Scope;

import com.sun.tools.javac.code.Symbol.*;

import com.sun.tools.javac.util.List;

/**

 * Represents an annotation type.

 *

 *  <p><b>This is NOT part of any supported API.

 *  If you write code that depends on this, you do so at your own risk.

 *  This code and its internal interfaces are subject to change or

 *  deletion without notice.</b>

 *

 * @author Scott Seligman

 * @since 1.5

 */

public class AnnotationTypeDocImpl

        extends ClassDocImpl implements AnnotationTypeDoc {

    public AnnotationTypeDocImpl(DocEnv env, ClassSymbol sym) {

        this(env, sym, null);

    }

    public AnnotationTypeDocImpl(DocEnv env, ClassSymbol sym, TreePath treePath) {

        super(env, sym, treePath);

    }

    /**

     * Returns true, as this is an annotation type.

     * (For legacy doclets, return false.)

     */

    public boolean isAnnotationType() {

        return !isInterface();

    }

    /**

     * Returns false.  Though technically an interface, an annotation

     * type is not considered an interface for this purpose.

     * (For legacy doclets, returns true.)

     */

    public boolean isInterface() {

        return env.legacyDoclet;

    }

    /**

     * Returns an empty array, as all methods are annotation type elements.

     * (For legacy doclets, returns the elements.)

     * @see #elements()

     */

    public MethodDoc[] methods(boolean filter) {

        return env.legacyDoclet

                ? (MethodDoc[])elements()

                : new MethodDoc[0];

    }

    /**

     * Returns the elements of this annotation type.

     * Returns an empty array if there are none.

     * Elements are always public, so no need to filter them.

     */

    public AnnotationTypeElementDoc[] elements() {

        List<AnnotationTypeElementDoc> elements = List.nil();

        for (Scope.Entry e = tsym.members().elems; e != null; e = e.sibling) {

            if (e.sym != null && e.sym.kind == Kinds.MTH) {

                MethodSymbol s = (MethodSymbol)e.sym;

                elements = elements.prepend(env.getAnnotationTypeElementDoc(s));

            }

        }

        return

            elements.toArray(new AnnotationTypeElementDoc[elements.length()]);

    }

}