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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 com.google.gwt.dev.asm.tree;
import java.util.ArrayList;
import java.util.List;
import com.google.gwt.dev.asm.AnnotationVisitor;
/**
* A node that represents an annotationn.
*
* @author Eric Bruneton
*/
public class AnnotationNode implements AnnotationVisitor {
/**
* The class descriptor of the annotation class.
*/
public String desc;
/**
* The name value pairs of this annotation. Each name value pair is stored
* as two consecutive elements in the list. The name is a {@link String},
* and the value may be a {@link Byte}, {@link Boolean}, {@link Character},
* {@link Short}, {@link Integer}, {@link Long}, {@link Float},
* {@link Double}, {@link String} or {@link com.google.gwt.dev.asm.Type}, or an
* two elements String array (for enumeration values), a
* {@link AnnotationNode}, or a {@link List} of values of one of the
* preceding types. The list may be null if there is no name
* value pair.
*/
public List values;
/**
* Constructs a new {@link AnnotationNode}.
*
* @param desc the class descriptor of the annotation class.
*/
public AnnotationNode(final String desc) {
this.desc = desc;
}
/**
* Constructs a new {@link AnnotationNode} to visit an array value.
*
* @param values where the visited values must be stored.
*/
AnnotationNode(final List values) {
this.values = values;
}
// ------------------------------------------------------------------------
// Implementation of the AnnotationVisitor interface
// ------------------------------------------------------------------------
public void visit(final String name, final Object value) {
if (values == null) {
values = new ArrayList(this.desc != null ? 2 : 1);
}
if (this.desc != null) {
values.add(name);
}
values.add(value);
}
public void visitEnum(
final String name,
final String desc,
final String value)
{
if (values == null) {
values = new ArrayList(this.desc != null ? 2 : 1);
}
if (this.desc != null) {
values.add(name);
}
values.add(new String[] { desc, value });
}
public AnnotationVisitor visitAnnotation(
final String name,
final String desc)
{
if (values == null) {
values = new ArrayList(this.desc != null ? 2 : 1);
}
if (this.desc != null) {
values.add(name);
}
AnnotationNode annotation = new AnnotationNode(desc);
values.add(annotation);
return annotation;
}
public AnnotationVisitor visitArray(final String name) {
if (values == null) {
values = new ArrayList(this.desc != null ? 2 : 1);
}
if (this.desc != null) {
values.add(name);
}
List array = new ArrayList();
values.add(array);
return new AnnotationNode(array);
}
public void visitEnd() {
}
// ------------------------------------------------------------------------
// Accept methods
// ------------------------------------------------------------------------
/**
* Makes the given visitor visit this annotation.
*
* @param av an annotation visitor. Maybe null.
*/
public void accept(final AnnotationVisitor av) {
if (av != null) {
if (values != null) {
for (int i = 0; i < values.size(); i += 2) {
String name = (String) values.get(i);
Object value = values.get(i + 1);
accept(av, name, value);
}
}
av.visitEnd();
}
}
/**
* Makes the given visitor visit a given annotation value.
*
* @param av an annotation visitor. Maybe null.
* @param name the value name.
* @param value the actual value.
*/
static void accept(
final AnnotationVisitor av,
final String name,
final Object value)
{
if (av != null) {
if (value instanceof String[]) {
String[] typeconst = (String[]) value;
av.visitEnum(name, typeconst[0], typeconst[1]);
} else if (value instanceof AnnotationNode) {
AnnotationNode an = (AnnotationNode) value;
an.accept(av.visitAnnotation(name, an.desc));
} else if (value instanceof List) {
AnnotationVisitor v = av.visitArray(name);
List array = (List) value;
for (int j = 0; j < array.size(); ++j) {
accept(v, null, array.get(j));
}
v.visitEnd();
} else {
av.visit(name, value);
}
}
}
}
