/*
 * Methods.java
 *
 * Created on March 12, 1999
 *
 * Modification Log:
 * 1.00 12th Mar 1999 Tanmay Original version.
 * 1.01 18th Mar 1999 Tanmay Throws IOexception instead of Exception,
 * needs constant pool during read and write
 * 1.02 12th Jun 1999 Tanmay Methods to verify and get text summary added.
 * 1.03 14th Aug 1999 Tanmay Added functionality to delete method.
 * 1.04 14th Aug 1999 Tanmay Added functionality to add a new method.
 *-----------------------------------------------------------------------------------------
 * 10th Sep 2003 Tanmay Moved to SourceForge (http://classeditor.sourceforge.net)
 *-----------------------------------------------------------------------------------------
 * 1.05 28th Sep 2003 Tanmay Moved text summary method to visitor.
 *
 */

package classfile;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Vector;

/**
 * Class to handle methods information.
 *<br><br>
 *
 * @author 	 Tanmay K. Mohapatra
 * @version 1.05, 28th September, 2003
 */

public class Methods {
 int iMethodsCount;
 Vector methodsVect;
 
 void read(DataInputStream dis, ConstantPool constantPool) throws IOException {
 iMethodsCount = dis.readUnsignedShort();
 methodsVect = new Vector(iMethodsCount);
 for (int iIndex=0; iIndex < iMethodsCount; iIndex++) {
 MethodInfo newInfo = new MethodInfo();
 newInfo.read(dis, constantPool);
 methodsVect.addElement(newInfo);
 }
 }
 
 void write(DataOutputStream dos, ConstantPool constantPool) throws IOException {
 iMethodsCount = methodsVect.size();
 dos.writeShort(iMethodsCount);
 for (int iIndex=0; iIndex < iMethodsCount; iIndex++) {
 MethodInfo newInfo = (MethodInfo)methodsVect.elementAt(iIndex);
 newInfo.write(dos, constantPool);
 }
 }
 
 public boolean verify(Vector vectVerifyErrors) {
 boolean bRet = true;
 for (int iIndex=0; iIndex < iMethodsCount; iIndex++) {
 MethodInfo newInfo = (MethodInfo)methodsVect.elementAt(iIndex);
 bRet = (newInfo.verify("Method " + (iIndex+1) + "(" + newInfo.cpName.sUTFStr + ")" ,
 vectVerifyErrors) && bRet);
 }
 return bRet;
 }
 
 public String toString() {
 String sRetStr;
 String sNewLine = System.getProperty("line.separator");
 
 iMethodsCount = methodsVect.size();
 sRetStr = "Methods count: " + iMethodsCount + sNewLine;
 for (int iIndex=0; iIndex < iMethodsCount; sRetStr += (methodsVect.elementAt(iIndex++).toString()+sNewLine));
 return sRetStr;
 }
 
 public int getMethodsCount() {
 return (iMethodsCount = methodsVect.size());
 }
 
 public MethodInfo getMethod(int iIndex) {
 return (MethodInfo)methodsVect.elementAt(iIndex);
 }
 
 public void deleteMethod(int iIndex) {
 MethodInfo delMethod = (MethodInfo)methodsVect.elementAt(iIndex);
 delMethod.removeReferences();
 methodsVect.removeElementAt(iIndex);
 iMethodsCount--;
 }
 
 public void addMethod(MethodInfo newMethod) {
 newMethod.addReferences();
 methodsVect.addElement(newMethod);
 iMethodsCount++;
 }
}