utilities.h

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// utilities.h
// August 2010, DTM

#ifndef __UTILITIES_H_
#define __UTILITIES_H_ 1

#include <functional>

#include "PixieInterface.h"

template<typename T=int>
struct PixieFunctionParms
{
    PixieInterface &pif;
    unsigned int mod;
    unsigned int ch;
    T par;
  
    PixieFunctionParms(PixieInterface &p, T x) : pif(p) {par=x;}
};

template<typename T=int>
class PixieFunction : 
public std::unary_function<bool, struct PixieFunctionParms<T> >
{
    public:
    virtual bool operator()(struct PixieFunctionParms<T> &par) = 0;
    virtual ~PixieFunction() {};
};

template<typename T>
bool forModule(PixieInterface &pif, int mod, 
           PixieFunction<T> &f, T par = T() );
template<typename T>
bool forChannel(PixieInterface &pif, int mod, int ch, 
        PixieFunction<T> &f, T par = T() );

// implementation follows
// perform the function for the specified module and channel
//   except if the channel < 0, do for all channels
//   or if the module < 0, do for all modules

template<typename T>
bool forChannel(PixieInterface &pif, int mod, int ch, 
        PixieFunction<T> &f, T par)
{
    PixieFunctionParms<T> parms(pif, par);
    
    bool hadError = false;
    
    if (mod < 0) {
    for (parms.mod = 0; parms.mod < pif.GetNumberCards(); parms.mod++) {
        if (ch < 0) {
        for (parms.ch = 0; parms.ch < pif.GetNumberChannels(); parms.ch++) {
            if (!f(parms))
            hadError = true;
        }
        } else {
        parms.ch = ch;
        if (!f(parms))
            hadError = true;
        }
    }
    } else {
    parms.mod = mod;
    if (ch < 0) {
        for (parms.ch = 0; parms.ch < pif.GetNumberChannels(); parms.ch++) {
        if (!f(parms))
            hadError = true;
        }
    } else {
        parms.ch = ch;
        hadError = !f(parms);
    }
    }

    return !hadError;
}

template<typename T>
bool forModule(PixieInterface &pif, int mod, PixieFunction<T> &f, T par)
{
    PixieFunctionParms<T> parms(pif, par);
    bool hadError = false;
    
    if (mod < 0) {
    for (parms.mod = 0; parms.mod < pif.GetNumberCards(); parms.mod++) {
        if (!f(parms))
        hadError = true;
    }
    } else {
    parms.mod = mod;
    hadError = !f(parms);
    }
    
    return !hadError;
}

#endif // __UTILITIES_H_