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// -*- C++ -*-
//
// Main.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2017 Leif Lonnblad
//
// ThePEG is licenced under version 3 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef THEPEG_Main_H
#define THEPEG_Main_H
// This is the declaration of the Main class.
#include "ThePEG/Config/ThePEG.h"
#include "ThePEG/Repository/EventGenerator.h"
namespace ThePEG {
/**
* This is a base class for classes implementing a main steering
* routine for running an EventGenerator, in case the standard
* 'go()' function in the EventGenerator is not enough. An example
* is a EventGenerator where the class deriving from Main specifies an
* initial set of partons which should be cascaded and hadronized etc.
*
* The derived class will be dynamically loaded by the standard
* <code>runThePEG</code> program and the static Init() function will
* be run. The loaded EventGenerator will then be available in the
* static eventGenerator() function. In addition the number of events
* requested from the command line will be available from the N()
* function. All other command-line arguments will be available from
* the arguments() function.
*
* @see EventGenerator
*/
class Main: public Base {
public:
/**
* Set the global event generator.
*/
static void eventGenerator(tEGPtr eg) { theEventGenerator = eg; }
/**
* Get the global event generator.
*/
static tEGPtr eventGenerator() { return theEventGenerator; }
/**
* Set the number of events requested.
*/
static void N(long n) { theN = n; }
/**
* Get the number of events requested.
*/
static long N() { return theN; }
/**
* Set the command-line arguments.
*/
static void arguments(const vector<string> & args)
{
theArguments = args;
}
/**
* Get the command-line arguments.
*/
static const vector<string> & arguments() { return theArguments; }
public:
/**
* Standard Init function used to initialize the interfaces.
*/
static void Init() {}
private:
/**
* The global event generator.
*/
static EGPtr theEventGenerator;
/**
* The number of events requested.
*/
static long theN;
/**
* The command-line arguments.
*/
static vector<string> theArguments;
private:
/**
* Describe an abstract base class without persistent data.
*/
static AbstractNoPIOClassDescription<Main> initMain;
/**
* Private and non-existent assignment operator.
*/
Main & operator=(const Main &) = delete;
};
}
namespace ThePEG {
/** @cond TRAITSPECIALIZATIONS */
/** This template specialization informs ThePEG about the base classes
* of Main. */
template <>
struct BaseClassTrait<Main,1>: public ClassTraitsType {
/** Typedef of the first base class of Main. */
typedef int NthBase;
};
/** This template specialization informs ThePEG about the name of the
* Main class. */
template <>
struct ClassTraits<Main>: public ClassTraitsBase<Main> {
/** Return a platform-independent class name */
static string className() { return "ThePEG::Main"; }
};
/** @endcond */
}
#endif /* THEPEG_Main_H */

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