/***
 * ASM: a very small and fast Java bytecode manipulation framework
 * Copyright (c) 2000-2007 INRIA, France Telecom
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */
package alterrs.asm;

/**
 * A visitor to visit a Java field. The methods of this interface must be called
 * in the following order: ( <tt>visitAnnotation</tt> | <tt>visitAttribute</tt>
 * )* <tt>visitEnd</tt>.
 * 
 * @author Eric Bruneton
 */
public interface FieldVisitor {

	/**
	 * Visits an annotation of the field.
	 * 
	 * @param desc
	 *            the class descriptor of the annotation class.
	 * @param visible
	 *            <tt>true</tt> if the annotation is visible at runtime.
	 * @return a visitor to visit the annotation values, or <tt>null</tt> if
	 *         this visitor is not interested in visiting this annotation.
	 */
	AnnotationVisitor visitAnnotation(String desc, boolean visible);

	/**
	 * Visits a non standard attribute of the field.
	 * 
	 * @param attr
	 *            an attribute.
	 */
	void visitAttribute(Attribute attr);

	/**
	 * Visits the end of the field. This method, which is the last one to be
	 * called, is used to inform the visitor that all the annotations and
	 * attributes of the field have been visited.
	 */
	void visitEnd();
}
