/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
package com.sun.org.apache.bcel.internal.classfile;
/* ====================================================================
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* reserved.
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* modification, are permitted provided that the following conditions
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*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
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import com.sun.org.apache.bcel.internal.Constants;
import java.io.*;
/**
* This class is derived from the abstract
* <A HREF="com.sun.org.apache.bcel.internal.classfile.Constant.html">Constant</A> class
* and represents a reference to the name and signature
* of a field or method.
*
* @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
* @see Constant
*/
public final class ConstantNameAndType extends Constant {
private int name_index; // Name of field/method
private int signature_index; // and its signature.
/**
* Initialize from another object.
*/
public ConstantNameAndType(ConstantNameAndType c) {
this(c.getNameIndex(), c.getSignatureIndex());
}
/**
* Initialize instance from file data.
*
* @param file Input stream
* @throws IOException
*/
ConstantNameAndType(DataInputStream file) throws IOException
{
this((int)file.readUnsignedShort(), (int)file.readUnsignedShort());
}
/**
* @param name_index Name of field/method
* @param signature_index and its signature
*/
public ConstantNameAndType(int name_index,
int signature_index)
{
super(Constants.CONSTANT_NameAndType);
this.name_index = name_index;
this.signature_index = signature_index;
}
/**
* Called by objects that are traversing the nodes of the tree implicitely
* defined by the contents of a Java class. I.e., the hierarchy of methods,
* fields, attributes, etc. spawns a tree of objects.
*
* @param v Visitor object
*/
public void accept(Visitor v) {
v.visitConstantNameAndType(this);
}
/**
* Dump name and signature index to file stream in binary format.
*
* @param file Output file stream
* @throws IOException
*/
public final void dump(DataOutputStream file) throws IOException
{
file.writeByte(tag);
file.writeShort(name_index);
file.writeShort(signature_index);
}
/**
* @return Name index in constant pool of field/method name.
*/
public final int getNameIndex() { return name_index; }
/** @return name
*/
public final String getName(ConstantPool cp) {
return cp.constantToString(getNameIndex(), Constants.CONSTANT_Utf8);
}
/**
* @return Index in constant pool of field/method signature.
*/
public final int getSignatureIndex() { return signature_index; }
/** @return signature
*/
public final String getSignature(ConstantPool cp) {
return cp.constantToString(getSignatureIndex(), Constants.CONSTANT_Utf8);
}
/**
* @param name_index.
*/
public final void setNameIndex(int name_index) {
this.name_index = name_index;
}
/**
* @param signature_index.
*/
public final void setSignatureIndex(int signature_index) {
this.signature_index = signature_index;
}
/**
* @return String representation
*/
public final String toString() {
return super.toString() + "(name_index = " + name_index +
", signature_index = " + signature_index + ")";
}
}