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/*
* Javassist, a Java-bytecode translator toolkit.
* Copyright (C) 1999-2004 Shigeru Chiba. All Rights Reserved.
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. Alternatively, the contents of this file may be used under
* the terms of the GNU Lesser General Public License Version 2.1 or later.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*/
package javassist.bytecode;
import java.io.IOException;
import java.io.DataInputStream;
import javassist.bytecode.annotation.*;
/**
* A class representing <code>RuntimeVisibleAnnotations_attribute</code> and
* <code>RuntimeInvisibleAnnotations_attribute</code>.
*/
public class ParameterAnnotationsAttribute extends AnnotationsAttribute {
/**
* The name of the <code>RuntimeVisibleParameterAnnotations</code>
* attribute.
*/
public static final String visibleTag
= "RuntimeVisibleParameterAnnotations";
/**
* The name of the <code>RuntimeInvisibleParameterAnnotations</code>
* attribute.
*/
public static final String invisibleTag
= "RuntimeInvisibleParameterAnnotations";
/**
* Constructs
* a <code>Runtime(In)VisisbleParameterAnnotations_attribute</code>.
*
* @param cp constant pool
* @param attrname attribute name (<code>visibleTag</code> or
* <code>invisibleTag</code>).
* @param info the contents of this attribute. It does not
* include <code>attribute_name_index</code> or
* <code>attribute_length</code>.
*/
public ParameterAnnotationsAttribute(ConstPool cp, String attrname,
byte[] info) {
super(cp, attrname, info);
}
/**
* Constructs an empty
* <code>Runtime(In)VisisbleParameterAnnotations_attribute</code>.
*
* @param cp constant pool
* @param attrname attribute name (<code>visibleTag</code> or
* <code>invisibleTag</code>).
*/
public ParameterAnnotationsAttribute(ConstPool cp, String attrname) {
this(cp, attrname, new byte[] { 0 });
}
/**
* @param n the attribute name.
*/
ParameterAnnotationsAttribute(ConstPool cp, int n, DataInputStream in)
throws IOException
{
super(cp, n, in);
}
/**
* Returns <code>num_parameters</code>.
*/
public int numParameters() {
return info[0] & 0xff;
}
AnnotationsAttribute makeCopy(ConstPool newCp, byte[] info) {
return new ParameterAnnotationsAttribute(newCp, getName(), info);
}
/**
* Runs the parser to analyze this annotation.
*
* @see AnnotationsWriter
*/
public void accept(AnnotationsVisitor visitor) throws Exception {
int numParam = numParameters();
int pos = 1;
visitor.beginParameters(numParam);
for (int i = 0; i < numParam; ++i) {
int num= ByteArray.readU16bit(info, pos);
visitor.beginAnnotationsArray(num);
for (int j = 0; j < num; ++j) {
pos = readAnnotation(visitor, pos);
}
visitor.endAnnotationsArray();
}
visitor.endParameters();
}
}
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