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/****   , [ OptVar.hh ], 
Copyright (c) 2008 Universite d'Orleans - Jeremie Vautard 

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 *************************************************************************/
#ifndef __QECODE_OPTVAR__
#define __QECODE_OPTVAR__

#include "Strategy.hh"
#include <vector>

class QECODE_VTABLE_EXPORT Aggregator {
public:
    virtual int eval(vector<int> values)=0;
    virtual ~Aggregator() {}
};

class QECODE_VTABLE_EXPORT AggregatorSum : public Aggregator{
public:
    QECODE_EXPORT virtual int eval(vector<int> values) {
        int cpt=0;
        for (int i=0;i<values.size();i++) 
            cpt += values[i];
        return cpt;
    }
    virtual ~AggregatorSum() {}
};

class QECODE_VTABLE_EXPORT AggregatorMean : public Aggregator{
public:
    QECODE_EXPORT virtual int eval(vector<int> values) {
        int size=values.size();
        if (size == 0) return 0;
        int cpt=0;
        for (int i=0;i<size; i++)
            cpt += values[i];
        cpt = cpt / size;
        return cpt;
    }
    virtual ~AggregatorMean() {}
};

class QECODE_VTABLE_EXPORT OptVar {
public:
    QECODE_EXPORT virtual int getVal(Strategy s)=0; 
    QECODE_EXPORT virtual int getScope()=0; 
    virtual ~OptVar() {}
};

class QECODE_VTABLE_EXPORT ExistOptVar : public OptVar {
private:
    int varId;
    int scopeId;
public:
    QECODE_EXPORT ExistOptVar(int var,int scope);
    QECODE_EXPORT virtual int getVal(Strategy s);
    QECODE_EXPORT virtual int getScope();
    virtual ~ExistOptVar() {}
};

class QECODE_VTABLE_EXPORT UnivOptVar : public OptVar {
private:
    int scopeId;
    OptVar* var;
    Aggregator* fct;
public:
    QECODE_EXPORT UnivOptVar(int scope,OptVar* zevar,Aggregator* agg);
    QECODE_EXPORT virtual int getVal(Strategy s);
    QECODE_EXPORT virtual int getScope();
    virtual ~UnivOptVar() {delete fct;}
};
    
#endif

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