/*

 * Copyright 2007-2008 Sun Microsystems, Inc.  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.  Sun designates this

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

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package com.sun.tools.javap;

import com.sun.tools.classfile.Annotation;

import com.sun.tools.classfile.Annotation.Annotation_element_value;

import com.sun.tools.classfile.Annotation.Array_element_value;

import com.sun.tools.classfile.Annotation.Class_element_value;

import com.sun.tools.classfile.Annotation.Enum_element_value;

import com.sun.tools.classfile.Annotation.Primitive_element_value;

/**

 *  A writer for writing annotations as text.

 *

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

 */

public class AnnotationWriter extends BasicWriter {

    static AnnotationWriter instance(Context context) {

        AnnotationWriter instance = context.get(AnnotationWriter.class);

        if (instance == null)

            instance = new AnnotationWriter(context);

        return instance;

    }

    protected AnnotationWriter(Context context) {

        super(context);

    }

    public void write(Annotation annot) {

        print("#" + annot.type_index + "(");

        for (int i = 0; i < annot.num_element_value_pairs; i++) {

            if (i > 0)

                print(",");

            write(annot.element_value_pairs[i]);

        }

        print(")");

    }

    public void write(Annotation.element_value_pair pair) {

        print("#" + pair.element_name_index + ":");

        write(pair.value);

    }

    public void write(Annotation.element_value value) {

        ev_writer.write(value);

    }

    element_value_Writer ev_writer = new element_value_Writer();

    class element_value_Writer implements Annotation.element_value.Visitor<Void,Void> {

        public void write(Annotation.element_value value) {

            value.accept(this, null);

        }

        public Void visitPrimitive(Primitive_element_value ev, Void p) {

            print(((char) ev.tag) + "#" + ev.const_value_index);

            return null;

        }

        public Void visitEnum(Enum_element_value ev, Void p) {

            print(((char) ev.tag) + "#" + ev.type_name_index + ".#" + ev.const_name_index);

            return null;

        }

        public Void visitClass(Class_element_value ev, Void p) {

            print(((char) ev.tag) + "#" + ev.class_info_index);

            return null;

        }

        public Void visitAnnotation(Annotation_element_value ev, Void p) {

            print((char) ev.tag);

            AnnotationWriter.this.write(ev.annotation_value);

            return null;

        }

        public Void visitArray(Array_element_value ev, Void p) {

            print("[");

            for (int i = 0; i < ev.num_values; i++) {

                if (i > 0)

                    print(",");

                write(ev.values[i]);

            }

            print("]");

            return null;

        }

    }

}