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CInterpreterCore.cpp

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/*
                    GNU GENERAL PUBLIC LICENSE
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*/
static const char* Copyright = "(C) Copyright Michigan State University 2002, All rights reserved";   
#include "TclAuthorizer.h"
#include "CInterpreterCore.h"                  
#include <TCLInterpreter.h>
#include "CReadoutMain.h"
#include "CStateVariable.h"
#include "CConstVariableCommand.h"
#include "CConstVariable.h"
#include "CTCLListener.h"
#include <CException.h>
#include <CopyrightNotice.h>
#include <NSCLException.h>
#include <iostream.h>
#include <spectrodaq.h>
#include <stdio.h>

CInterpreterCore::CInterpreterCore (CInterpreterStartup& rStartup) :
  m_rInterpreter(rStartup),
  m_pBegin(new CBeginCommand),
  m_pEnd(new CEndCommand),
  m_pPause(new CPauseCommand),
  m_pResume(new CResumeCommand),
  m_pRunVariable(new CRunVariableCommand),
  m_pStateVariable(new CStateVariableCommand),
  m_pTagBase(new CTagBaseCommand),
  m_pExit(new CExitCommand),
  m_pAuthorizer(0),
  m_pState(0),
  m_pStartTime(0),
  m_pEvents(0),
  m_pWords(0)
{

}
CInterpreterCore::~CInterpreterCore()
{
  m_pBegin->UnregisterAll();
  delete m_pBegin;

  m_pEnd->UnregisterAll();
  delete m_pEnd;

  m_pPause->UnregisterAll();
  delete m_pPause;

  m_pResume->UnregisterAll();
  delete m_pResume;

  m_pRunVariable->UnregisterAll();
  delete m_pRunVariable;

  m_pStateVariable->UnregisterAll();
  delete m_pStateVariable;

  m_pTagBase->UnregisterAll();
  delete m_pTagBase;

  m_pExit->UnregisterAll();
  delete m_pExit;

  m_Const.UnregisterAll();


   // Delete the const variables:
   
  delete m_pState;  
  delete m_pState;

  // The existence of an authorizer is optional depending
  // on whether or not the usr selected to enable tcl server
  // functionality.
  //  If it exists it is rundown and deleted.
  if(m_pAuthorizer) {
     m_pAuthorizer->UnregisterAll();
     delete m_pAuthorizer;
  }

}

// Functions for class CInterpreterCore

void 
CInterpreterCore::RegisterExtensions()  
{

  // Put out the copyright information:

  CopyrightNotice::Notice(cerr, "pReadout", "1.0", "2002");
  CopyrightNotice::AuthorCredit(cerr, "pReadout", "Ron Fox", NULL);

  // From the Interpreter core, we need the actual interpreter object:

  CTCLInterpreter* pTcl = m_rInterpreter.getInterpreter();

  // We'll also need the main object and the experiment:

  CReadoutMain* pMain = CReadoutMain::getInstance();
  CExperiment*  pExperiment = pMain->getExperiment();
  

  // Now create and register the command executor modules:

  // Begin:

  m_pBegin->Bind(pTcl);
  m_pBegin->Register();

  // End:
  
  m_pEnd->Bind(pTcl);
  m_pEnd->Register();

  // Pause:

  m_pPause->Bind(pTcl);
  m_pPause->Register();

  // Resume:

  m_pResume->Bind(pTcl);
  m_pResume->Register();

  // Run variable manager:

  m_pRunVariable->Bind(pTcl);
  m_pRunVariable->Register();

  // State variable manager:


  m_pStateVariable->Bind(pTcl);
  m_pStateVariable->Register();

  // Tag base management:

  m_pTagBase->Bind(pTcl);
  m_pTagBase->Register();

  // Safe exit:


  m_pExit->Bind(pTcl);
  m_pExit->Register();

  // const command:

  m_Const.Bind(pTcl);
  m_Const.Register();


  // Finally: Register the run state variables and initialize them:

  CStateVariableCommand& rState(*m_pStateVariable);

  rState.Create("title");
  rState.Create("run");
  rState.Create("period");
  rState.Create("experiment");

  // The iteration below initializes these variables to reasonable values.
  
  StateVariableIterator i = rState.begin();
  while(i != rState.end()) {
    if(i->first == "run") {
      i->second->Set("0");
    }
    if(i->first == "period") {
      i->second->Set("10");
    }
   if(i->first == "title") {
      i->second->Set("Set a new title please");
   }
   if(i->first == "experiment") {
      i->second->Set("Set a new experiment description please");
   }
    i++;
  }
  
  // Execute a little scriptlet to set the correct value of the tkloaded
  // const:
  
  string command("const tkloaded ");
  if(pMain->getWindowed()) {
        command += "true";
        pTcl->Eval("proc __Wake {} { after 10 __Wake }; __Wake");
  }
  else {
        command += "false";
  }
  pTcl->Eval(command.c_str());
  
  // Constants that reflect run state are also defined:
  //   "state" - the run state e.g. "active"
  //   "starttime" - When the most recently started run began.
  //   "events"     - Number of events taken this run.
  //   "words"      - Number of data words taken this run.
  
  m_pState     = new CConstVariable(pTcl, string("state"), string("Inactive"));
  m_Const.Enter(m_pState);

  m_pStartTime = new CConstVariable(pTcl, string("starttime"), 
                                   string("-never-"));
  m_Const.Enter(m_pStartTime);
  
  m_pEvents    = new CConstVariable(pTcl, string("events"), string("0"));
  m_Const.Enter(m_pEvents);
  
  m_pWords    = new CConstVariable(pTcl, string("words"), string("0"));
  m_Const.Enter(m_pWords);
  
  // Now we let the experiment register its experiment specific stuff:


  pMain->AddUserCommands(*pExperiment, m_rInterpreter, *this);
  pMain->SetupStateVariables(*pExperiment, m_rInterpreter, *this);
  pMain->SetupRunVariables(*pExperiment, m_rInterpreter, *this);

  // Finally fire up the tcl server if the  main readout honcho
  // wants it:

  // If the server is turned on, then start the listener thread:
  

  try {
    if(pMain->getServer()) {
       // Add authorization commands.  Note that if this is
       // done in the listener it races against Tcl startup.
       //
      m_pAuthorizer = new CTclAuthorizer(pTcl->getInterpreter());
      m_pAuthorizer->AddHost(string("localhost"));
       
      static CTCLListener* pServer = new CTCLListener(pMain->getPort(),
                                                      m_pAuthorizer); 
      pServer->Enable();        // Never will stop this so don't neeed to save.
      
    }
  }
  catch (NSCLException& rExcept) {
    cerr << "Caught spectrodaq exception" << rExcept.GetErrorString() << endl;
    cerr << "While: " << rExcept.GetContextString() << endl;
    cerr << "in pServer->Enable() \n";
  }
  catch (CException& rExcept) {
    cerr << "Caught framework exception " << rExcept.ReasonText() << endl;
    cerr << " while: " << rExcept.WasDoing() << endl;
    cerr << " in pServer->Enable() \n";
  }
  catch(string rString) {
    cerr << "Caught string exception " << rString << endl;
    cerr << "in pServer->Enable()\n";
  }
  catch(char* pString) {
    cerr << "Caught char* exception: " << pString << endl;
    cerr << " in pserver->Enable()\n";
  }
  catch(...) {
    cerr << "Unrecognized exception fired in pserver->Enable()\n";
  }
  

}

void
CInterpreterCore::setEvents(unsigned int nValue)
{
   char szValue[100];
   sprintf(szValue, "%u", nValue);
   m_pEvents->Set(szValue);
}
void
CInterpreterCore::setWords(unsigned int nValue)
{
   char szValue[100];
   sprintf(szValue, "%u", nValue);
   m_pWords->Set(szValue);
}

---