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Mock objects library for java
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/***
 * 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 org.mockito.asm;

/**
 * A visitor to visit a Java annotation. The methods of this interface must be
 * called in the following order: (visit | visitEnum | 
 * visitAnnotation | visitArray)* visitEnd.
 *
 * @author Eric Bruneton
 * @author Eugene Kuleshov
 */
public interface AnnotationVisitor {

    /**
     * Visits a primitive value of the annotation.
     * 
     * @param name the value name.
     * @param value the actual value, whose type must be {@link Byte},
     *        {@link Boolean}, {@link Character}, {@link Short},
     *        {@link Integer}, {@link Long}, {@link Float}, {@link Double},
     *        {@link String} or {@link Type}. This value can also be an array
     *        of byte, boolean, short, char, int, long, float or double values
     *        (this is equivalent to using {@link #visitArray visitArray} and
     *        visiting each array element in turn, but is more convenient).
     */
    void visit(String name, Object value);

    /**
     * Visits an enumeration value of the annotation.
     * 
     * @param name the value name.
     * @param desc the class descriptor of the enumeration class.
     * @param value the actual enumeration value.
     */
    void visitEnum(String name, String desc, String value);

    /**
     * Visits a nested annotation value of the annotation.
     * 
     * @param name the value name.
     * @param desc the class descriptor of the nested annotation class.
     * @return a visitor to visit the actual nested annotation value, or
     *         null if this visitor is not interested in visiting
     *         this nested annotation. The nested annotation value must be
     *         fully visited before calling other methods on this annotation
     *         visitor.
     */
    AnnotationVisitor visitAnnotation(String name, String desc);

    /**
     * Visits an array value of the annotation. Note that arrays of primitive
     * types (such as byte, boolean, short, char, int, long, float or double)
     * can be passed as value to {@link #visit visit}. This is what
     * {@link ClassReader} does.
     * 
     * @param name the value name.
     * @return a visitor to visit the actual array value elements, or
     *         null if this visitor is not interested in visiting
     *         these values. The 'name' parameters passed to the methods of this
     *         visitor are ignored. All the array values must be visited
     *         before calling other methods on this annotation visitor.
     */
    AnnotationVisitor visitArray(String name);

    /**
     * Visits the end of the annotation.
     */
    void visitEnd();
}