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/*
* Javassist, a Java-bytecode translator toolkit.
* Copyright (C) 1999-2007 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.DataInputStream;
import java.io.IOException;
import java.util.Map;
/**
* <code>EnclosingMethod_attribute</code>.
*/
public class EnclosingMethodAttribute extends AttributeInfo {
/**
* The name of this attribute <code>"EnclosingMethod"</code>.
*/
public static final String tag = "EnclosingMethod";
EnclosingMethodAttribute(ConstPool cp, int n, DataInputStream in)
throws IOException
{
super(cp, n, in);
}
/**
* Constructs an EnclosingMethod attribute.
*
* @param cp a constant pool table.
* @param className the name of the innermost enclosing class.
* @param methodName the name of the enclosing method.
* @param methodDesc the descriptor of the enclosing method.
*/
public EnclosingMethodAttribute(ConstPool cp, String className,
String methodName, String methodDesc) {
super(cp, tag);
int ci = cp.addClassInfo(className);
int ni = cp.addNameAndTypeInfo(methodName, methodDesc);
byte[] bvalue = new byte[4];
bvalue[0] = (byte)(ci >>> 8);
bvalue[1] = (byte)ci;
bvalue[2] = (byte)(ni >>> 8);
bvalue[3] = (byte)ni;
set(bvalue);
}
/**
* Constructs an EnclosingMethod attribute.
* The value of <code>method_index</code> is set to 0.
*
* @param cp a constant pool table.
* @param className the name of the innermost enclosing class.
*/
public EnclosingMethodAttribute(ConstPool cp, String className) {
super(cp, tag);
int ci = cp.addClassInfo(className);
int ni = 0;
byte[] bvalue = new byte[4];
bvalue[0] = (byte)(ci >>> 8);
bvalue[1] = (byte)ci;
bvalue[2] = (byte)(ni >>> 8);
bvalue[3] = (byte)ni;
set(bvalue);
}
/**
* Returns the value of <code>class_index</code>.
*/
public int classIndex() {
return ByteArray.readU16bit(get(), 0);
}
/**
* Returns the value of <code>method_index</code>.
*/
public int methodIndex() {
return ByteArray.readU16bit(get(), 2);
}
/**
* Returns the name of the class specified by <code>class_index</code>.
*/
public String className() {
return getConstPool().getClassInfo(classIndex());
}
/**
* Returns the method name specified by <code>method_index</code>.
*/
public String methodName() {
ConstPool cp = getConstPool();
int mi = methodIndex();
int ni = cp.getNameAndTypeName(mi);
return cp.getUtf8Info(ni);
}
/**
* Returns the method descriptor specified by <code>method_index</code>.
*/
public String methodDescriptor() {
ConstPool cp = getConstPool();
int mi = methodIndex();
int ti = cp.getNameAndTypeDescriptor(mi);
return cp.getUtf8Info(ti);
}
/**
* Makes a copy. Class names are replaced according to the
* given <code>Map</code> object.
*
* @param newCp the constant pool table used by the new copy.
* @param classnames pairs of replaced and substituted
* class names.
*/
public AttributeInfo copy(ConstPool newCp, Map classnames) {
if (methodIndex() == 0)
return new EnclosingMethodAttribute(newCp, className());
else
return new EnclosingMethodAttribute(newCp, className(),
methodName(), methodDescriptor());
}
}
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