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/var/pcce/usera/hill/rcc_1.2/RodDaq/RodCrate/RodPrimList.cxx

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// File: RodPrimList.cxx
// $Header: /afs/cern.ch/user/s/sctpixel/private/cvsroot/RodDaq/RodCrate/RodPrimList.cxx,v 1.4 2002/12/17 20:08:31 tmeyer Exp $

#include "RodPrimList.h"

namespace SctPixelRod {

//***************************Class PrimListException**************************
//
// Description:
//   This is a class to handle exceptions in the PrimList Class.
//
//
// @author Tom Meyer (meyer@iastate.edu) - originator
//

PrimListException::PrimListException( std::string descriptor, unsigned long data1,
                            unsigned long data2) {
  m_descriptor = descriptor;
  m_data1 = data1;
  m_data2 = data2;
  }
  
// Description:
//  Class RodPrimList is a list of the primitives that control ROD behavior.  
// It is sent to the RodModule via its Send function.  As it is derived 
// from the STL list, it inherits all the usual list functionality.
//
// @author Tom Meyer (meyer@iastate.edu) - originator
//
RodPrimList::RodPrimList(const RodPrimList &rhs) :
  list<RodPrimitive>(rhs) {
  m_index=rhs.getIndex();
  m_version=rhs.getVersion();
}

RodPrimList &RodPrimList::operator=(const RodPrimList &rhs) {
  if (this == &rhs)
    return *this;
  list<RodPrimitive>::operator=(rhs);
  m_index=rhs.getIndex();
  m_version=rhs.getVersion();
  if (rhs.m_buffer) {
    m_bufferSize=rhs.m_bufferSize;
    copy(rhs.m_buffer, rhs.m_buffer+rhs.m_bufferSize, m_buffer);
  } else {
    m_bufferSize=0;
    m_buffer=0;
  }
  return *this;
}

RodPrimList::~RodPrimList() {
  if (m_buffer) 
    delete [] m_buffer;
}

unsigned long RodPrimList::numWords() {
  unsigned long n=6; 
    // Head and tail make up 6 words
  RodPrimList::iterator i; 
  for (i = begin(); i != end(); i++)
    n += i->getLength();
  return n;
}

unsigned long RodPrimList::checkSum() {
  unsigned long c = m_buffer[0];; 
  for (unsigned long i = 1; i < m_bufferSize-1; i++) {
    c ^= m_buffer[i];
  }
  return c;
}

void RodPrimList::bufferBuild() throw(PrimListException &) {
  m_bufferSize = numWords();
  m_buffer = new unsigned long[m_bufferSize]; // call clear() to delete m_buffer
  if (0 == m_buffer) throw PrimListException(
      "Bufferbuild unable to allocate buffer, bufferSize, index:", m_bufferSize, 
      m_index);
  m_buffer[0] = m_bufferSize;
  m_buffer[1] = m_index;
  m_buffer[2] = this->size();  // Number of primitives in the list
  m_buffer[3] = m_version;

  long bufPos=4;
  long primLength;
  long *bodyBegin, *bodyEnd;

  for (RodPrimList::iterator i = this->begin(); i != this->end(); i++) {
    primLength = i->getLength();
    m_buffer[bufPos++] = primLength;
    m_buffer[bufPos++] = i->getIndex();
    m_buffer[bufPos++] = i->getId();
    m_buffer[bufPos++] = i->getVersion();
    bodyBegin=i->getBody(); bodyEnd=bodyBegin+primLength-4;
    for(long *j=bodyBegin; j < bodyEnd; j++, bufPos++) 
        m_buffer[bufPos]=(unsigned long) *j;
  } 
  m_buffer[bufPos++] = m_bufferSize;
  m_buffer[bufPos] = checkSum();
}

void RodPrimList::clear() {
  this->erase(begin(), end());
  m_bufferSize=0;
  if (m_buffer)
    delete [] m_buffer;
    m_buffer = 0;
}

void RodPrimList::print() {
  if (!m_buffer)
    cerr << "Please call bufferBuild before printing.\n";
  for (unsigned int i=0; i<m_bufferSize; i++) 
    cout << m_buffer[i] << endl;
}
} // End namespace SctPixelRod

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