/*
* Javassist, a Java-bytecode translator toolkit.
* Copyright (C) 1999- 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,
* or the Apache License Version 2.0.
*
* 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());
}
}